yFiles for HTML

Changelog

yFiles for HTML 1.4.0.1 - Changes Since 1.4

This is the 1st bugfix release for 1.4. There are no incompatible changes since 1.4.

Note that the improvements and bugfixes of this release are part of yFiles for HTML 2.0.1.1, too.

Improvement

• Input modes that use a combination of mouse gestures and modifier key(s) can now recognize modifier presses independently of mouse events. Previously, a changed modifier was only recognized during the next mouse event. A main benefit is that the cursor changes instantly with the key down and up events, for example during node re-parenting.
• InteractiveOrganicLayouter: Significant performance improvements during interactive changes of the graph, for example when a user moves nodes.

Bugfixes

View

• The event StripeDropInputMode.StripeCreated always returned a wrong stripe instance.
• When manually creating groups and the folding view is configured to collapse group nodes by default, folders were erroneously created with empty size.
• TableLayoutConfigurator erroneously considered left side labels as top labels, and consequently might have created insets of incorrect size.

Layout

• IncrementalHierarchicLayouter: Fixed bug that caused node-edge overlaps in conjunction with some complex edge grouping specifications.
• IncrementalHierarchicLayouter: Fixed bug that led to too large group nodes in graphs with grouped edges.
• SmartOrganicLayouter, OrganicLayouter and InteractiveOrganicLayouter: Fixed error that was triggered due to NaN values that could occur in case the input graph had a very large number of nodes.
• EdgeRouter: Fixed bug that caused violations of minimum first/last segment lengths of grouped edges when using different edge layout descriptors and, second, made the layout algorithm remove a user-registered DataProvider with key EdgeRouter.EDGE_LAYOUT_DESCRIPTOR_DP_KEY.
• EdgeRouter: Fixed rare node overlaps in conjunction with monotonic path restrictions.
• RecursiveGroupLayouter: Fixed bug that caused edges to share the same port even though they should have been assigned to different ports. Note that this problem only appeared if the core layout algorithm was an instance of class IncrementalHierarchicLayouter.
• IsolatedGroupComponentLayouter: Fixed bug that caused edge labels that intersected with group nodes even though option ComponentLayouter.considerLabels was enabled.

Documentation Viewer Improvements

• The detailed descriptions of the methods for event registration and de-registration were not displayed.
• The inheritance hierarchy of a type was not properly displayed.
• In the code generator, corrected the generated code for events.
• Fixed the display of the sidebar in pinned mode.
• The documentation viewer can now be opened from the file system even if third-party cookies are disabled.

yFiles for HTML 1.4 - Changes Since 1.3.0.7

This release brings the new layout features of yFiles for HTML 2.0 to the yFiles for HTML 1.x branch. Unlike version 2.0, the names of existing API are unchanged and have not been harmonized. The view part is unchanged except for one improvement and a small number of bugfixes.

Therefore, this release has no incompatible API changes except minor changes in the module dependencies. In addition, there are some behavior changes in the layout part. Updating code from 1.3 will require only a very small number of changes, if at all.

Major New Features

New Hierarchic Layout Features

Improved incremental layouts of groups with changing bounds. This is especially useful for hierarchic layout of graphs with expandable and collapsible groups. The new Hierarchic Grouping demo shows the improved behavior.

Port grouping. Edges can be bundled at their ports but routed independently.

Undirected edges. This enables to, for example, support mixed graphs that contain both directed and undirected edges. While directed edges typically point in the main layout direction, the direction of undirected edges doesn't matter and such edges may point to nodes in the same layer. This feature also enables to force some edges to specifically point against the main layout direction.

Edge thickness. Edges can now have specified thickness values and minimum distances in the layout will consider these thicknesses.

Recursively routed edges. With this routing style, edges that pass the border of group nodes will always leave at the bottom side and enter at the top side of the group node.

Sankey Diagrams

Sankey diagrams visualize flow quantity between entities, for example cost or energy flow.

Edge Bundling Routing Style

Bundling multiple edges means that their common parts are to some degree merged into a bundled part. Edge bundling is useful to increase the readability of graph drawings with a high number of edges that connect a comparably small number of nodes. Edge bundling is supported by

• Circular Layout: Edge bundling is applied to edges of the same circle.
• Radial Layout: Edge bundling is applied to non-tree edges.
• TreeReductionStage: Edge bundling is applied to non-tree edges.

Regular Substructures in Organic Layouts

Organic Layout now supports the detection of regular substructures in the graph and applies a specific layout style to them such that they can be better recognized. These substructures include chains, stars, cycles, and parallel structures.

More Preferred Label Placement Specifiers

The new preferred placement specifiers LabelLayoutConstants.PLACE_AT_SOURCE_PORT and LabelLayoutConstants.PLACE_AT_TARGET_PORT for edge labels express that the label should be placed directly at the source/target port of the edge. Currently, the specifiers are only considered by the integrated labeling of the hierarchic layout.

Automatic Label Placement

If the new option reduceAmbiguity of SALabeling and GreedyMISLabeling is enabled, these algorithms try to avoid placing labels at positions where it is not clear to which graph element a label belongs.

TreeReductionStage now supports the automatic placement of labels of non-tree edges. Users do not need to take care of such edge labels themselves after using a tree layout algorithm on a non-tree input graph in conjunction with the reduction stage.

Similarly, the series-parallel layout now supports the automatic placement of labels of non-series-parallel edges.

Planar Embeddings

A new API for working with the planar embedding of planar graphs allows easy iteration of the faces, darts, and consecutive edges of the embedding.

Clustering

Added a k-means clustering algorithm that partitions a given graph in k-clusters to Groups.

Added a hierarchical clustering algorithm that partitions a given graph based on agglomerative (i.e., bottom-up) strategy and some linkage function (single-, complete- and average-linkage) to Groups.

We added settings for these new layout features to the Layout Styles demo.

Improvements

• The prefix used by DefsManager.generateUniqueDefsId can now be changed.
• IncrementalHierarchicLayouter: Improved support for PortCandidates at group nodes. Previously, they were only obeyed if there was just a single candidate defined. Now, out of the given candidates, one is selected and considered for the routing. Still, fixed candidates are treated like free ones and are not supported at the side of group nodes.
• IncrementalHierarchicLayouter: Routing of grouped edges that connect to nodes of different groups now assures that the whole bus segment remains outside the different group nodes. This avoids that group nodes get unnecessarily large and potentially makes drawings more symmetric.
• IncrementalHierarchicLayouter: Improved edge grouping such that it is now possible to group incoming/outgoing edges as well as same-layer/backloop edges with common edges.
• IncrementalHierarchicLayouter: Reduced the number of bends when integrated edge labeling is enabled.
• IncrementalHierarchicLayouter now takes the original edge route into account to determine the route of a self-loop.
• IncrementalHierarchicLayouter: Added properties that allow to stop the layout algorithm after the layering or the sequencing phase while skipping the subsequent phases. This may be useful when using two layout runs to collect layering and/or sequencing information in the first run that will be used during the second run.
• IncrementalHierarchicLayouter: Fixed edges which have segments that should be horizontal or vertical but are slightly non-orthogonal.
• IncrementalHierarchicLayouter: Improved behavior in incremental mode that moved normal nodes that were in different layers (in the initial layout) to the same layer. This behavior occurred in case there were group nodes that extended into the layer above or below to get a compact result.
• IncrementalHierarchicLayouter: Added support for overlapping layers. The strict layer structure can be compacted by moving layers up into the space of previous layers. Layers are only moved if it won't produce overlaps with nodes or edges.
• IncrementalHierarchicLayouter: Added support for sequence constraints between edges as well as nodes and edges, see SequenceConstraintFactory.
• The following tree layouts now support custom selection of the root node of the tree: BalloonLayouter, GenericTreeLayouter, TreeLayouter, ARTreeLayouter, and HVTreeLayouter
• BalloonLayouter: Interleaved child placement now works in conjunction with 'from sketch' mode and custom child order comparators. This means that the settings BalloonLayouter.fromSketchMode and BalloonLayouter.comparator are no longer ignored when enabling the interleaved placement mode.
• TreeLayouter and GenericTreeLayouter now take into consideration the minimum group node size specified by the user with a DataProvider registered with the graph with key GroupingKeys.MINIMUM_NODE_SIZE_DP_KEY.
• GenericTreeLayouter: Improved DefaultPortAssignment to consider PortConstraints in all modes. If a distributed mode is selected, then weak constraints will also be distributed on the according side.
• LayeredNodePlacer: Improved spacing between labels and bends when polyline labeling is enabled.
• Improved the performance of SALabeling and GreedyMISLabeling, especially for large graphs.
• Improved support for PreferredPlacementDescriptor side preference (left, on-edge, right) when using generic labeling algorithms SALabeling and GreedyMISLabeling. Now, the side preference is considered for edge labels with arbitrary EdgeLabelModel implementations.
• Improved the performance of EdgeRouter when routing edges that have PortConstraints or PortCandidates.
• EdgeRouter will now consider the target group of an edge if this edge is the only member of its source group.
• EdgeRouter: Improved edge routes of self-loops to go around at least one corner of the node. Only if both source and target port are restricted to the same side (with a PortConstraint or PortCandidate), self-loops may start and end at the same side of the node.
• InteractiveOrganicLayouter: Fixed possible performance problem after changing the inertia/stress of some nodes.
• SeriesParallelLayouter now takes into consideration minimum node sizes specified by the user.
• MultiPageLayouter: Added new option MultiPageLayouter.strictClusterSeparation that allows to specify whether or not nodes with different cluster IDs may be placed onto the same page.
• DirectedOrthogonalLayouter: Now always produces planar drawings for trees.
• Improved the performance of OrthogonalSegmentDistributionStage and thus also ChannelEdgeRouter which by default uses the mentioned stage as edge distribution strategy.
• ChannelRouter: Improved order of segments to avoid edge crossings when there are multiple segments that have one common end point.
• Added layout stage CurveFittingLayoutStage which allows the approximation of edge paths with cubic Bezier curve control points. The stage is especially useful if curved edges are modeled using a large number of bends connected via straight lines.
• Added layout stage HandleNaNCoordinatesStage which prevents layout algorithms that take initial coordinates for nodes and edges into account from failing if some of those graph elements have NaN-coordinates.
• Improved the performance of PartialLayouter for input graphs that feature a high number of large subgraph components. Does not apply to component assignment strategy PartialLayouter.COMPONENT_ASSIGNMENT_STRATEGY_SINGLE.
• Several smaller performance improvements for IncrementalHierarchicLayouter, SmartOrganicLayouter, OrthogonalLayouter, CircularLayouter, RadialLayouter, SeriesParallelLayouter, and ChannelRouter.

Bugfixes

• SimpleLabelStyle: Changing the autoFlip or trimming properties had no visible effect until a visual was created anew with the createVisual method.
• The property SizeChangedEventArgs.oldSize contained the new size instead of the old size in some cases.
• MouseHoverInputMode: The tooltip of the very first hover did not appear.
• Added the flag yfiles.workaroundCR701075 that enables a workaround for occasional rendering issues in Chrome 57. This is due to Chrome 57 not properly rendering the applied transform matrix. The workaround is automatically enabled in the yFiles demo applications when opened in Chrome 57.

Incompatible Changes

Breaking API Changes

• The module yfiles/layout-circular has been merged with the module yfiles/layout-organic. If you have references to yfiles/layout-circular replace them with yfiles/layout-organic.
• The module yfiles/layout-planar has been merged with the module yfiles/layout-orthogonal since it contained no public API and is only used from the latter module. If you have references to yfiles/layout-planar replace them with yfiles/layout-orthogonal.

Behavior Changes

• The following layout algorithms have more sensible default values.
  • CanonicMultiStageLayouter and MultiPageLayouter: The default labelLayouter is now set to an instance of SALabeling.
  • OrthogonalEdgeRouter.crossingCost: The default value is now 1.5 instead of 0.0.
  • CompactOrthogonalLayouter: The CompactOrthogonalLayouter.OrthogonalShortestPathPathFinder which is used as default path finder strategy now uses value 1.5 as default for property crossingCost instead of 0.
  • PartialLayouter.minimalNodeDistance: The default value is now 10.0 instead of 0.0.
  • MultiParentDescriptor.minimumNodeDistance: The default value is now 15.0 instead of 10.0.
  • BalloonLayouter.minimalNodeDistance: The default value is now 10.0 instead of 0.0.
  • SALabeling.deterministicMode: The default value is now true instead of false.
  • SplitEdgeLayoutStage.proxyNodeSize: The default value is now 1.0 instead of 0.0.
• Most of the property setters of the types of the layout part now throw an error if an invalid, illegal, or null argument is given as input.
• IncrementalHierarchicLayouter may now place source/target labels in layers that contain common nodes. In previous versions such labels were always placed in separate layers which often led to less compact drawings with superfluous bends.
• IncrementalHierarchicLayouter: The edge grouping now supports to group incoming and outgoing edges of a node. In previous versions incoming and outgoing edges always defined separate groups even though the user specified the same group IDs for such edges.
• Method IncrementalHierarchicLayouter.integratedEdgeLabeling does now always return false if the labeling algorithm is disabled. In previous versions it was only required that an appropriate labeling algorithm was specified, but it was not necessary that it is enabled. Therefore, the integrated labeling state queried from the property might not have corresponded to what the layout algorithm actually did. The same behavior change applies to the following methods:
  • IncrementalHierarchicLayouter.considerNodeLabels
  • DirectedOrthogonalLayouter.integratedEdgeLabeling
  • DirectedOrthogonalLayouter.considerNodeLabels
  • OrthogonalLayouter.integratedEdgeLabeling
  • OrthogonalLayouter.considerNodeLabels
  • OrthogonalGroupLayouter.integratedEdgeLabeling
  • OrthogonalGroupLayouter.considerNodeLabels
• IncrementalHierarchicLayouter: Geometry information specified for IncrementalHierarchicLayouter.ALTERNATIVE_GROUP_BOUNDS_DP_KEY and IncrementalHierarchicLayouter.ALTERNATIVE_EDGE_PATH_DP_KEY is now automatically rotated according to the specified layout orientation. This fixes unstable from-sketch behavior in incremental layout mode when using an orientation other than top-to-bottom.
• IncrementalHierarchicLayouter: For input graphs with infeasible PortConstraints and PortCandidates/PortCandidateSets (i.e., for edges that have non-matching port constraints/candidates), the layout algorithm now always prefers PortConstraints. In previous versions, the behavior was not well-defined for such cases.
• PortCandidateAssignmentStage: Now, if an edge has registered PortCandidates and connects to nodes with PortCandidateSets, the stage will try to match both collections to find an appropriate port. In case there is no matching port candidate, a PortCandidate specified for the edge is preferred. Before, one of the PortCandidates was selected without trying to match with node port candidates.
• SmartOrganicLayouter does no longer resize empty group nodes, possibly ignoring a minimum group node size for them. The behavior with respect to empty group nodes is now in line with the behavior of other common layout algorithms. The same behavior change applies for OrganicLayouter with group policy setting OrganicLayouter.IGNORE_GROUPS_POLICY, where previously empty groups were resized too.
• Method CompositeLayoutStage.canLayout now checks if all the LayoutStages of the pipeline can layout the given graph and does not return always true.
• Method SingleCycleLayouter.canLayoutCore now returns false if null is given as input.
• Method Centrality.closenessCentrality now sets the closeness of a node to Infinity if the sum of the shortest path distances is 0. Before, it was set to NaN in such cases.
• Method SingleCycleLayouter.nodeSequencer now allows to specify null to return to the default sequencer. In previous versions, specifying null led to an error.
• Method GraphTransformer.operation now only sets the operation value and does not disable the automatic selection of best fitting rotation angle if an operation other than ROTATE is selected.
• Method OrthogonalLayouter.integratedEdgeLabeling now throws an error if the current label layouter is not of type LabelLayoutTranslator.
• Constructor TreeComponentLayouter throws an error if null is given as argument.
• Centrality: The following methods can now take empty NodeMaps and EdgeMaps as arguments for returning the resulting centrality values.
  • Centrality.edgeBetweenness
  • Centrality.nodeBetweenness
  • Centrality.nodeEdgeBetweenness

yFiles for HTML 1.3.0.7 - Changes Since 1.3.0.6

Bugfixes

• CanvasComponent: Key events had no effect if the component was part of a shadow DOM. The component's div element always lost the focus on keydown.
• Instances of GraphEditorInputMode and GraphViewerInputMode were not garbage collected due to a non-removed event listener in the clickInputMode.
• Hiding INodeSnapResultProvider or IBendSnapResultProvider from the lookup no longer leads to a crash when nodes or bends are moved.
• PolylineEdgeStyle: Toggling the pen between dashed and solid styles did only work once. Then, the SVG path stayed at solid regardless of the pen's dash style.
• SmartEdgeLabelModel: Once again, labels at the first segment snap properly at the layout of the source node. Since 1.3.0.6, some snap positions were overlapping with the source node.

Layout

• Fixed a bug in TableLayoutConfigurator which altered the size of a column or row if an edge routing algorithm was applied.
• MultiPageLayouter: Fixed rare bug that caused straight-line edge routes instead of orthogonal routes.
• SmartOrganicLayouter and OrganicLayouter: Fixed bug that caused the algorithm to not consider the specified custom GroupBoundsCalculator.

yFiles for HTML 1.3.0.6 - Changes Since 1.3.0.5

Demo Improvements

• Made demo-framework/require.js able to deal with paths syntax.
• Removed unused LabelInsetsProvider implementation in demo.yfiles.layout.layoutstyles.

Bugfixes

• Added the flag yfiles.workaroundIE7766782 that enables a workaround for the Internet Explorer JIT bug 7766782, which can cause class initialization errors when using the yFiles for HTML GWT Overlay in Internet Explorer, especially when the GWT Overlay is used in combination with Smart GWT.
• Made the IEnumerable.getMultiProjection and EnumerableExtensions.selectMany implementations non-recursive to avoid stack overflows.
• Made SvgExport helper class more resilient against zero sized exports.
• The CreateEdgeInputMode.EdgeCreated event triggered before the corresponding undoable edit was committed. This could result in a broken undo queue, if e.g. an animated layout was started during in the event listener. The event now triggers after the edit has been committed. With automatic undo unit merging, this should not make a difference for the end user, however from the perspective of the code there will be two subsequent edits, rather than one compound, if the code in the listener actually modifies the edge.

• The license validation always failed for users of some (mostly older) browsers in specific scenarios:

  Locale	ISO 639 Code	Affected Scenarios
  Estonian	et	Only Licenses with watermark
  Finnish	fi	Only License with watermark
  Swedish	sv	Only License with watermark
  Hawaiian	haw	Always
  Tamazight	tzm	Always

  The following browsers were affected:

  • IE before version 11
  • Firefox before version 29
  • Chrome before version 24
  • Opera before version 15
  • Safari (all versions)
• Prevent null exceptions when interacting with a GraphOverviewControl before assigning a GraphControl to the OverviewInputMode.
• OverviewInputMode could break the overview visualization if the overview has a very small width or height.
• SmartEdgeLabelModel: Edge label snap lines have been too short for some positions that are far apart from the edge path.
• SmartEdgeLabelModel: An exception was thrown if the path of the corresponding edge contained bends that were close together or at the same location.
• Folding: the view state of a port on a folder node was sometime ignored when a folding edge was created.
• Fixed several issues with orthogonal edge editing.
  • When dragging the source/target port/node of an orthogonal edge, the bends created during the drag were not cleaned up after canceling the gesture by pressing the ESC key.
  • Orthogonal edges could be made non-orthogonal by re-connecting the source port to the target port location (creating a self-loop), or vice versa.
• Explicit Arrow elements in GraphML were sometimes read back incorrectly. The new deserialization property SerializationProperties.ParseArrowElementAsDefaultArrow can be used to work around this issue.
• GenericPortLocationModel wasn't serialized correctly.
• Table.setStyle(ILabel, ILabelStyle) and Table.setLabelModelParameter ignored the provided style resp. label model parameter.
• PathBasedEdgeStyleRenderer could leave visual artifacts when switching to an arrow that returned a null visual.
• KeyboardInputMode now passes the original CompoundKeyEventArgs to registered event handlers instead of EmptyArgs.
• Touch move events have an effect only if the corresponding touch down event also happened within the GraphControl.
• The IsDown property of a Touch2DDevice was always false after the first touch up event of that device, e.g. after the first tap of a double tap.

Layout

• IncrementalHierarchicLayouter: fixed rare error triggered in AsIsSequencer for edges incident to group nodes that have a sketch without bend points as well as port constraints.
• IncrementalHierarchicLayouter: fixed bug that may cause non-orthogonal segments of grouped edges even though orthogonal edge routing is enabled.
• IncrementalHierarchicLayouter: improved compactness of layouts that feature group nodes with insets and (group) nodes with halos (NodeHalo). Previously, the specification of halos could enlarge the insets of group nodes by an unnecessary large amount.
• IncrementalHierarchicLayouter: Fixed bug that sometimes caused the route of back-loop edges with at least one endpoint incident to a group node to unnecessarily enter this group node.
• IncrementalHierarchicLayouter: Fixed rare bug that caused same-layer edge to cross through their source or target node, e.g., the port was at the top of the source node but the edge crossed through the source node to leave it at the bottom.
• IncrementalHierarchicLayouter: Fixed rare bug that may caused overlaps between labels and segments of edges with octilinear routes.
• IncrementalHierarchicLayouter: fixed possible infinite loop if there are critical edges (see CRITICAL_EDGE_DP_KEY).
• SimplexNodePlacer: Fixed bug that caused overlaps between edges and nodes when node compaction is enabled and edges have either strong PortConstraints or fixed PortCandidates.
• SmartOrganicLayouter and OrganicLayouter: Fixed bug that caused group nodes with zero height/width in the layout result. The bug appeared when having empty groups, group node insets smaller than one (defined viaGroupingKeys#GROUP_NODE_INSETS_DP_KEY) and no minimum group node size specified (GroupingKeys#MINIMUM_NODE_SIZE_DP_KEY).
• GenericTreeLayouter: fixed possible group node overlaps in conjunction with some node placers, for example AssistantPlacer.
• GenericTreeLayouter: fixed bug that caused less compact layout results when having node halos (see NodeHalo).
• PartialLayouter: fixed error that appeared if no DataProvider with key PARTIAL_NODES_DP_KEY is registered with the input graph.
• EdgeRouter: Fixed bug that caused violations of minimum first/last segment lengths of grouped edges when using different edge layout descriptors and, second, made the layout algorithm remove a user-registered DataProvider with key EdgeRouter.EDGE_LAYOUT_DESCRIPTOR_DP_KEY.
• EdgeRouter: Fixed rare error that may appear if there are fixed and grouped edges at the same time.
• ChannelEdgeRouter: Fixed routing of self-loops that have both source and target end point at the same side of the node. Previously, when multiple such self-loops were present at the same node, the routing produced bad end points located outside of the node.
• OrthogonalEdgeRouter: Fixed error that appeared if there were node labels with zero height/width.

Documentation Viewer Improvements

• Improved page loading performance for large API pages.
• The integrated code editor now shows correct argument names in delegate and callback function signatures.
• Parameters of delegate functions (e.g. event handlers) are now part of the "Show Usages" results.

yFiles for HTML 1.3.0.5 - Changes Since 1.3.0.4

Demo Improvements

• Added a flag to demo.yfiles.layout.multipage that prevents re-entrant layout calls.
• Feature DefaultDummyNodeConverter.initialSize in Getting Started tutorial steps 11, 12 and 13.
• Added custom layout stage to the tree layouter of demo.yfiles.layout.layoutstyles which handles edges to group nodes. Fixed vertical preferred edge label placement setting of the label layout.
• Updated demo.yfiles.graph.pdfexport 's references for the svg to pdf libraries. Beside other bugfixes, the updated svg to pdf libraries now support svg patterns and correct export of nodes that use ImageNodeStyle.
• In some rare cases, the graph creation code in demo.yfiles.graph.orgchart was called before the application was initialized. Made sure that the application has been initialized before creating the graph.
• The graph in demo.yfiles.graphml.graphml is now updated lazily after the GraphML source has not been modified for 1 second to prevent cumulative updates on every keystroke.

Bugfixes

Viewer

• Improved the performance of yfiles.drawing.TextRenderSupport.determineMeasureMode for the first label measure call.
• Fixed 'not a finite floating-point value' exception which occurred when the size of the GraphControl is zero during an animation.
• Added the flag yfiles.workaroundIE2337112 that enables a workaround for disappearing 'use' elements in Internet Explorer 11 on Windows 10. The workaround is automatically enabled in yFiles demo applications that use the demo framework for IE11 on Windows 10.
• GraphML deserialization: Changed default value for arrows without an explicit ArrowType from ArrowType.NONE to ArrowType.DEFAULT.
• GraphML serialization: Whitespace in XML attributes was not escaped correctly.
• Specifying a DesignerSerializationVisibility for collection properties did not work.
• TypeConverter was erroneously part of the yFiles for HTML Layout package and has been removed from it.

Layout

• IncrementalHierarchicLayouter : fixed error that could happen in AsIsSequencer when incremental group hints are defined (see IncrementalHintsFactory.createIncrementalGroupHint ) along with specific port constraints on edges incident to an incremental group node.
• IncrementalHierarchicLayouter : Improved result if compact label placement is enabled (which is the default), see SimplexNodePlacer.LabelCompaction . In previous versions the labels may have been placed in a stacked style even if this did not make the result more compact (e.g. if all labels are placed to the right of the edges).
• GraphPartitionManager: fixed functionality to hide edges when using methods GraphPartitionManager.hide, GraphPartitionManager.hide . Previously, edges were actually not hidden from the graph.
• IncrementalHierarchicLayouter : Fixed distance between vertical (in a top-to-bottom layout) segments of same layer edges that connect to group nodes. This also applies to self-loops that connect to the top or bottom of a group node with both ends as well as same layer parts of other edges like back-loops.
• IncrementalHierarchicLayouter : Fixed bug that caused the minimum edge-to-edge distance to be violated by edges with strong port constraints that cross each other.
• ParallelEdgeLayouter : Fixed bug that caused wrong (very large) edge port coordinates. These coordinates could also lead to Exceptions when later processing the graph, for example, when calculating placements of edge labels belonging to the edges with bad coordinates using model SmartEdgeLabelModel.
• SeriesParallelLayouter : Fixed violations of the minimum first and last segment length and self-crossings of octilinear edges.
• SeriesParallelLayouter : Fixed bug that caused node-to-node or node-to-edge overlaps in the case where the graph contained group nodes and node/edge labels.
• CircularLayouter : Fixed a bug that could potentially cause an infinite loop when encountering a node with a very high out-degree.
• IncrementalHierarchicLayouter : Fixed bug that caused critical edges to not be aligned (see CRITICAL_EDGE_DP_KEY).
• BusRouter: Fixed rare error caused by non-orthogonal edge segments.
• GenericTreeLayouter : Fixed bug that caused edges which are reversed during the layout and have a port constraint only to one endpoint (e.g., source) to obtain the same port constraint also to the other endpoint (e.g., target).
• Polyline.EdgeRouter : Fixed possible error that may appear if a specified PortCandidate has multiple directions.
• IncrementalHierarchicLayouter : Fixed bug with some ignored any side strong port constraints.
• IncrementalHierarchicLayouter: Fixed bug that resulted in edges whose segments are not on grid.
• Polyline.EdgeRouter : Fixed bug that caused routed edges to sometimes share the same port as fixed edges.
• Polyline.EdgeRouter : fixed bug that caused incorrect routes for grouped edges with intersecting source and target.
• FamilyTreeLayouter : Fixed handling of grouping data providers so they are not changed by the layout algorithm.
• IncrementalHierarchicalLayouter : Fixed grid references to place the nodes on grid correctly for each layout orientation.
• FamilyTreeLayouter : Fixed possible error that may appear if the input graph contains group nodes.

Documentation Viewer Improvements

• Improved page loading performance for large API types.
• Added an integrated code editor with smart code completion support for yFiles API members.
• Integrated search for related knowledge base articles.
• Added a version that can be viewed offline (index-offline.html - run npm install first).

yFiles for HTML 1.3.0.4 - Changes Since 1.3.0.3

New and Improved Demos

• The demo demo.yfiles.graph.largegraphs illustrates different approaches and their performance for rendering large graphs.
• The demo demo.yfiles.graphml.graphml provides a live view of the graph's GraphML representation to provide an insight into GraphML serialization.
• The demo demo.yfiles.graph.neighborhood shows how to implement a neighborhood view of the selected graph item.
• The demo demo.yfiles.toolkit.react shows how to integrate the yFiles graph control into a React project.
• The demo.yfiles.graph.svgexport and demo.yfiles.graph.pdfexport demos show how to export the diagram to SVG or PDF, respectively.
• The demo demo.yfiles.graph.tableeditor shows a new, optimized table style.
• The demo.yfiles.graph.imageexport demo now also supports server-side image export.

Layout Improvements

• IncrementalHierarchicLayouter : Reduced number of overlaps of group nodes containing elements with head or tail sequence constraints.
• Improved abort handling for algorithms that use ConstraintIncrementalLayerer, ConstraintLayerer and TopologicalIncrementalLayerer . For large graphs these classes may require a long runtime that cannot be canceled by using an AbortHandler.

Bugfixes

Viewer

• TemplateNodeStyle and StringTemplateNodeStyle no longer throw an exception on template re-evaluation if a bound value is null.
• Fixed an error that could occur when the graph control has no actual size but visible scrollbars.
• Corrected the interactive resizing of selected nested group nodes. Previously, the result was depended on the order in which the nodes were selected. Now, GraphCommands.ADJUST_GROUP_NODE_SIZE_COMMAND now always processes the nodes from innermost to outermost groups.
• GraphClipboard: Corrected the selection after a paste command for clipboards which are shared among GraphControls.
• Fixed an error when resizing nodes in a filtered graph that contains tables.
• Fixed an issue with NodeDropInputMode and filtered graphs.
• Changed the default value of GridVisualCreator.abberationTolerance to 50 to switch off grid hiding by default.
• Fixed the visualization of grids of the style GridStyle.Crosses.
• The property CanvasControl.fitContentViewMargins is now considered correctly even if the values for left and right (or top and bottom) are different. Previously, the content was always centered in the view.
• GraphML deserialization errors are now ignored if the flag yfiles.graphml.SerializationProperties.IGNORE_XAML_DESERIALIZATION_ERRORS is set.
• Fixed an error while loading GraphML files that were created with yFiles WPF and contained labels.

Layout

• IncrementalHierarchicLayouter: Fixed an error that caused PortCandidate s to potentially be ignored or not handled correctly for self-loops when having directions other than PortCandidate.NORTH, PortCandidate.SOUTH, PortCandidate.WEST or PortCandidate.EAST.
• IncrementalHierarchicLayouter : Fixed an error that caused that the layer of an incremental group (see IncrementalHintsFactory.createIncrementalGroupHint ) depends on the group's location if recursive layering is enabled (see IncrementalHierarchicLayouter.recursiveGroupLayering ). However, the position of incremental groups should be freely chosen by the layouter.
• IncrementalHierarchicLayouter : Fixed an error that caused grouped edge segments to overlap with one of the adjacent nodes if that is a group node.
• IncrementalHierarchicLayouter : Fixed an error that caused same layer segments to be too short for the labels that should be placed at those segments.
• IncrementalHierarchicLayouter : Fixed an error that caused a violation of minimum first/last segment length for edges that connect two neighboring nodes in the same layer.
• IncrementalHierarchicLayouter : Fixed an error that caused a violation of minimum first/last segment length for edges that connect to group nodes. Now, the first/last segments of those edges will have at least the length of the largest minimum first/last segment length of all edges connected to the same group node.
• IncrementalHierarchicLayouter : Fixed rare error that was caused by an inconsistent group node order that may appear for input graphs containing both swimlanes and groups.
• IncrementalHierarchicLayouter : Fixed an error that prevented that fixed any side port constraints were considered for edges between a group and a node within this group.
• Polyline.EdgeRouter : Fixed rare error that may appear during rerouting of edges (see Rerouting) if the input graph contains overlapping nodes.
• Polyline.EdgeRouter : Fixed possible error that may appear if there are grouped edges consisting of both fixed and non-fixed edges (see EdgeRouter.SphereOfAction).
• Polyline.EdgeRouter : Fixed an error that caused violations of the minimum first or last segment length for target grouped edges. This only happened when these distances were defined in the default EdgeLayoutDescriptor instead of a DataProvider with individual descriptors.
• Polyline.EdgeRouter: Fixed side handling of external strong ports.
• Polyline.EdgeRouter: Fixed rare bug that may cause a stack overflow.
• GreedyMISLabeling and SALabeling : Improved placement of edge labels with preferred placement at source or target.
• ParallelEdgeLayouter : Fixed possible error that may appear if the parallel edge is almost horizontal or vertical.
• ChannelEdgeRouter : Fixed an error that may cause segments with infinite coordinates for edges incident to group nodes if the path finder strategy is set to ChannelEdgeRouter.OrthogonalShortestPathPathFinder.
• MultiPageLayouter : Fixed possible error that may appear if an internal layouter queries a DataProvider for an inserted dummy node.
• DirectedOrthogonalLayouter : Fixed problem that may cause non-directed routes for directed edges if option DirectedOrthogonalLayouter.alignDegreeOneNodes is enabled.
• SimplexNodePlacer: Fixed an error that disabled label compaction feature.
• BalloonLayouter: Fixed an error that caused BalloonLayouter.CHILD_ORDERING_POLICY_SYMMETRIC not to work as desired.
• AssistantPlacer : Fixed placement of assistant nodes. When all children of a node are assistants, they are all placed left/right.
• TreeLayouter: Fixed a stack overflow error that could occur for trees with high depth.
• GenericTreeLayouter : Fixed root alignments to only take the child node bounds into account without considering edge segments in the subtree.
• DelegatingNodePlacer: Constants DelegatingNodePlacer.VERTICAL and DelegatingNodePlacer.HORIZONTAL along with methods DelegatingNodePlacer.Orientation are deprecated since they had no effect.
• Trees: fixed method CenterRoot that didn't always return the correct center node of a tree.
• OrganicLayouter : Fixed an error that caused tree-beautifier feature (see OrganicLayouter.ActivateTreeBeautifier ) to have no effect if activated when the graph is actually flat (i.e., there is no group node that contains child nodes) but data providers for groups (see GroupingKeys) are registered with the graph.
• CircularLayouter: Fixed an error that may cause node overlaps.
• SplitEdgeLayoutStage : Fixed an error that caused the user's selection for edges that have to be split to be ignored. Also, Fixed an error that caused an error because of nodes with zero width/height.
• ShortestPaths : Fixed error that occurred when applying the Dijkstra or Bellman-Ford algorithm to an empty graph.

Incompatible Changes

• Paste Command: the selection is now updated before the method GraphClipboard.paste exits.

Documentation Viewer Improvements

• Fixed the display of text-only "see also" references.
• Removed the filter text field of the api tree component, because it could easily be mistaken as the main search box, but the search box provides a much better search experience.
• When following a link to a type member, the target tab sometimes didn't scroll to the documentation of that member.

yFiles for HTML 1.3.0.3 - Changes Since 1.3.0.2

Bugfixes and Demo Improvements

Viewer

• Fixed cleanup of template style bindings, preventing memory leaks caused by accumulating bindings.
• Added an activatable workaround (yfiles.workaroundEDGE2057021) for the StringTemplateNodeStyle . It converts attribute names consisting of only upper case characters to lower case attribute names. This refers to Microsoft Edge's DOMParser issue.
• Added an activatable workaround (yfiles.workaroundCR570845) for a Chrome problem that can prevent queued display updates from being executed during touch/mouse gestures. The yfiles.workaroundCR570845 property can be set to a delay in milliseconds that should be tolerated before running the queued functions using window.requestAnimationFrame() . The default value of yfiles.workaroundCR570845 is -1 , which disables the workaround. The workaround is automatically enabled in yFiles demo applications that use the demo framework for Chrome versions later than 46.
• Fixed a dragging bug on IE9 where the node dragging stops if the item is dragged out of the GraphControl and back in.
• Added charCode property to yfiles.input.KeyEventArgs , which gets the charCode of the original event. Also fixed keyValue property in yfiles.input.CompoundKeyEventArgs , which previously returned an empty string.
• Fixed Control.onKeyPress, that almost never was called. This also had the effect that the CanvasControl.CompoundKeyTyped event was not fired.
• Fixed a bug in IE11 on Windows 7 where mouse events were fired during dragging although the mouse has not been moved.
• Prevent IE from entering an event loop multiple times on the same coordinate when using touch input in DragDrop . Thus touch input behaves the same as mouse input, where this was already in place.
• Fixed inconsistent input mode states when dragging the mouse out of an iframe containing the graph control and releasing the mouse button outside the iframe.
• Fixed a bug in browsers without deep document.importNode support (e.g. IE9) where attributes of inlined images were wrong after exporting the graph with SvgExport

Demos

• Improved custom node and edge style color choices for the custom style tutorial.
• Orgchart-Demo: Fixed exception in IE9.

yFiles for HTML 1.3.0.2 - Changes Since 1.3.0.1

Bugfixes and Demo Improvements

Viewer

• Fixed null exceptions after GraphControl.CleanUp.
• Fixed a bug in TreeSource and AdjacentNodesGraphSource where nodes could get removed during updateGraph.
• Fixed a bug where double clicks weren't delivered correctly when mouse move events were fired between mouse down and release.
• CanvasControl.Mouse2DDragged events are not delivered anymore if the event coordinates are equal to the last mouse event.
• Implemented non-functioning class yfiles.drawing.PointSelectionInstaller , which adds a default port selection visualization.
• Improved Scrollbar behavior when ScrollBar.value is changed from the outside while dragging the slider, e.g. when changing the GraphControl's contentRect . Previously, the scrollbar slider jumped to the new mouse location, resulting in discontinuous scrolling. The new code keeps the difference between the slider and the mouse location, that was caused by the external value change.

Demos

• Demo.yfiles.graph.mindmap : Fixed various issues like re-ordering edges at the root node, root node icon and expanding the root node on touch devices.
• Fixed an issue in demo.yfiles.layout.interactiveorganic where the graph suddenly froze when dragging a node shortly after application start.
• New nodes in demo.yfiles.binding.interactivegraphsource et al. are not placed into the top layer anymore, but are fitted nicely in the existing layout during update.
• Fixed an issue in demo.yfiles.graph.orgchart where an exception occurred when changing node selection while no node was currently visible.
• New design for social-network graph in demo.yfiles.graph.viewer.

Class Framework

• fixMethods is now available in both namespaces, yfiles.util and yfiles.lang.util.

Demo Framework

• Fixed possible overlapping and unintentional resize of the side panels.

New Demos

• New demo.yfiles.graph.networkmonitoring shows a monitoring tool for a network with simulated traffic and random failures.

yFiles for HTML 1.3.0.1 - Changes Since 1.3

Bugfixes and Demo Improvements

Viewer

• GraphML: Primitive data types such as string or number were written to the wrong XAML namespace, thus breaking interoperability with other yFiles platforms.
• CSS classes set on the div element before calling CanvasControl.ForDiv or CanvasControl.ForId are not overwritten anymore. Instead the class yfiles-canvascontrol is appended to the existing classes.
• Added a dedicated class for the main CanvasControl SVG to prevent implicit CSS styling of all SVGs inside the canvas (e.g. in graph item styles).
• OverviewInputMode now uses the value 0.00000001 as minimum zoom, instead of Number.MIN_VALUE, which is zero in Chrome on iOS.
• Fixed a visual glitch where devices with touch input using the WebKit Javascript engine (e.g. Android tablets, MacBook with TouchPad, Mac with MagicMouse etc.) displayed scrollbars in the graph control that should not be visible.
• Improved performance of SimpleLabelStyleRenderer. The label's text size was calculated even if it was not needed subsequently.
• Fixed a bug in TextRenderSupport where TextMeasureMode.SVG was used instead of TextMeasureMode.CANVAS.
• Text height measurement with TextMeasureMode.SVG returned the wrong height on single line string if the string only contained characters lower than full line height, e.g. lower case characters, spaces etc.

Demos

• InteractiveOrganic Demo: Fixed a performance issue caused by newly created unconnected nodes where the graph stuttered while moving the connected components. Also disallowed label adding.
• BPMN Editor Demo: The nodes with blue border are not treated as group nodes anymore.
• Table Editor Demo: A flag prevents re-entrant layout execution.
• Fixed an invalid line of code in the source code comments of step 24 of the Custom Styles Tutorial.
• OrgChart Demo: Updated design and improved the viewport limiter settings.
• MindMap Demo: Improved the viewport limiter settings.
• Interactive data binding demos: Catch and display errors thrown by faulty binding functions.
• LayoutStyles Demo: Replaced OrthogonalEdgeRouter with the newer EdgeRouter as router for non-tree edges for the BalloonLayouter.
• Tutorial 01, Step 16 (Grid Snapping): 'Show Grid' button now only toggles grid visualization.
• SimpleCustomStyle Demo and Tutorial 02, Step 19 (Animated Edge Selection): Minor bugfix in the animated edge style where the time delta result was wrong for the first frame request.

Demo Framework

• The style panel, which is used in demos where nodes can be dragged into the graph control, now displays nodes with large labels correctly.
• Fixed touch input gestures on on Microsoft Surface devices.
• Implemented auto-adjust of GraphControl.dragSize and GraphControl.hitTestRadius to improve user experience on different input devices (touch, pen and mouse).

yFiles for HTML 1.3 - Changes Since 1.2.1.4

Major Features Added

Viewer

• GraphControl integrates itself much better into web pages since it no longer stops the propagation of any keyboard, mouse, touch and pointer events that passes through it. In addition, preventDefault() is now only called on mouse events, touch events, pointer events, and on keyboard events that actually trigger an interaction. Especially, it leaves all other keyboard events untouched.

  If the default behavior doesn't fit your requirements, whether or not to call preventDefault() on events that pass the GraphControl can be separately specified for the three types of events (keyboard, pointer, and context menu).

  This makes it possible for example to call a default browser action even if the GraphControl has the focus and to change the focus to and from a GraphControl with the Tab key.

• With the new property GraphControl.mouseWheelBehavior, customers can specify when a wheel/mousewheel event should be handled: never, always, or only when focused. In addition, it is now easily possible to specify whether the mouse wheel scrolls or zooms the GraphControl.

  Together with the less restrictive event prevention, this makes it possible to scroll the whole web page even if the cursor is over a GraphControl.

• Graphs can now be saved as file download in several recent browsers, namely Chrome 38+, Firefox 28+, IE 10+, Opera 25+, and recent versions of the related mobile browsers. Saving can be done either with the method GraphControl.saveFile or with custom code. The latter is shown in detail in the File Operations demo and allows further customizations, for example adding support for more browsers.
• Improved the module file format. The yFiles modules now follow the Universal Module Definition (UMD) pattern, offering compatibility with the most popular script loaders and JavaScript environments.

  Using UMD, the yFiles modules easily support a variety of different loading schemes: lazily using an AMD loader like RequireJS, with CommonJS in Node.js applications or Browserify web projects, or simply via an object in the browser's global scope. Several new demos show examples of how to use the different loading schemes.

• GraphClipboard now supports copying independent items. This allows the user to copy labels, ports, bends, or edges to other elements without having to copy their owners. Also this technique allows for copying an item (for example a label) to multiple target elements at once.

  In addition, the GraphClipboard now supports an optional target location for pasting and the new method GraphEditorInputMode.pasteAtLocation can be used to this end, too. In addition, ApplicationCommands.PASTE now supports an optional parameter of type IPoint to provide a target location.

• Node and edge labels can now snap to particular locations while moving them interactively. Both types of labels can be aligned horizontally or vertically to their original location. In addition, a node label can be aligned with the borders or the center of its owner, and during resizing of that owner, smartly keeps its relative location to the snapped position. An edge label can be snapped on the path of its owner, or at particular distances of it.

  This feature can be enabled and configured with a LabelSnapContext and is available for labels with one of these label models: SmartEdgeLabelModel, FreeEdgeLabelModel, FreeNodeLabelModel, and FreeLabelModel.

• Interactive label editing and creation has the following new features:

  • The current label visual can be hidden while the text editor is shown to reduce visual clutter. This feature is enabled by default and can be controlled through the property GraphEditorInputMode.hideLabelDuringEditing.
  • GraphEditorInputMode and TableEditorInputMode provide new events LabelTextEditingStarted and LabelTextEditingCanceled that are raised directly before the label text editor is shown and after the label editing has been canceled, respectively.
  • Double clicking nodes and edges now opens the label editor. An existing label can be double clicked to edit the label text. This feature can be disabled with the property GraphEditorInputMode.doubleClickLabelEditingAllowed.
  • IEditLabelHelper implementations provided by the ILabel's lookup can now be used to forbid or customize the editing of individual labels. Class LabelDecorator provides a new property editLabelHelperDecorator to customize this feature.
  • GraphEditorInputMode.editLabel and TableEditorInputMode.editLabel can now be used with SimpleLabel instances. This provides editing capabilities for dummy elements such as legends, page headers or other textual elements.
  In addition, label editing has been reworked for a more consistent user experience. Especially, label editing now:
  • Uses the various callback methods on GraphEditorInputMode, TableEditorInputMode and IEditLabelHelper implementations in a consistent way, regardless of how many labels or labeled items are edited or added, and independent from how the editing/label creation process has been started (e.g. through a command or programmatically through the input mode convenience methods).
  • Determines the actual labeled item that is modified when multiple elements are selected in a consistent way.

Development Support

The documentation viewer got many improvements and corrections that make browsing the API and the Developer's Guide much more convenient. The most notable additions are

• The new code generator provides a GUI for creating an implementation of any class and interface and optionally adds stubs for methods, properties and events you want to override
• Improved experience on small screens and touch devices
• Added a selection of UI themes
• Customizable keyboard shortcuts
• Support for favorites

Layout

• Added new layout algorithm SeriesParallelLayouter for series-parallel graphs. Such graphs are directed graphs with a single source (a node without incoming edges) and a single sink (a node without outgoing edges) that are build using only the following two rules:
  • Series composition: The source of a subgraph is merged with the sink of another subgraph.
  • Parallel composition: The sources and sinks of two subgraphs are merged.
• Added multi-parent support to GenericTreeLayouter. A tree node can have multiple parents that are connected to all of its siblings and share the same parents. This might come to use in organizational charts where a team answers to multiple superiors.
• Added grid placement support for nodes and edges to IncrementalHierarchicLayouter.

Minor Features Added

Viewer

• GraphEditorInputMode got support for cyclic click selection. This helps in conveniently selecting items that are hidden behind other items. By default, this features is bound to the Alt key being pressed. It can be disabled by setting the cyclicSelectionRecognizer property to EventRecognizers.NEVER.

• GraphEditorInputMode now provides default action for duplicating single graph items or whole subgraphs. This also works with incomplete subgraphs, for example in a tree, it is possible to duplicate a subtree and the tree will never be disconnected.

  In addition, the new command GraphCommands.DUPLICATE_COMMAND (shortcut: Ctrl-D) and the new method GraphClipboard.duplicate can be used to duplicate selected items without altering the clipboard contents.

• GraphEditorInputMode now provides a default action for reversing edges. To this end, the methods reverseEdge and reverseEdges have been added to GraphEditorInputMode. Also, the new command GraphCommands.REVERSE_EDGES_COMMAND (shortcut: Ctrl-R) has been added.
• Node ports can now be moved by dragging their IHandle.
• GraphClipboard has new properties copyItems, independentItems, and dependentItems that allow for restricting the types of items that can be copied at all, independently from their owners, or implicitly through their owners, respectively.
• GraphViewerInputMode: The click hit test order can now be configured by property clickHitTestOrder.
• GraphEditorInputMode and GraphViewerInputMode provide an explicit hit test order for double clicks that can be changed through the doubleClickHitTestOrder property. By default, this hit test order prefers labels over other graph elements.
• Added new methods ClickInputMode.preventNextDoubleClick and TapInputMode.preventNextDoubleTap that can be used in event handlers for single clicks/taps to prevent that this click can become part of a double click event.
• NodeDropInputMode can now optionally drop nodes onto leaf nodes and thus convert the leaves into group nodes. Also it is possible to drop nodes into collapsed folder nodes. For both use-cases, an opt-in property has been added and a predicate property allows for fine-grained control over this feature.
• Similarly, leaf nodes can now be the target of a reparenting gesture if the property GraphEditorInputMode.reparentToLeavesAllowed is enabled. In this case, leaves are converted into group nodes.
• ItemDropInputMode does now support touch gestures to Drag'n'Drop graph items into a graph.
• Added support for deleting bends in a way that an orthogonal edge remains orthogonal after removing the bends. The new property GraphEditorInputMode.orthogonalBendRemoval enables/disables this feature.
• GraphViewerInputMode now supports multi-selection with Ctrl+Click and marquee selection. The latter is disabled by default.
• OverviewInputMode and the GraphOverviewControl have been optimized to improve the user experience when used on touch devices.

• SvgExport can now correctly handle styles with external image references. This requires an asynchronous approach and therefore, the API of this class has been changed accordingly. The new API is shown in the Image Export demo. The compatibility layer describes how to map the previous API to the new one.

  In addition, characters that are not part of the Unicode Basic Multilingual Plane are now exported correctly.

• Improved GraphModelManager to allow for easier customizations. Property useHierarchicNesting was added to allow for adding custom logic that uses a different approach to hierarchic nesting. In addition, the return types of some of the factory methods where made less restrictive to allow for further modifications.
• FoldingManager now offers two convenience methods, updateViewStatesForNode and updateViewStatesForEdge, that will trigger update calls on IDummyNodeConverter and IDummyEdgeConverter for elements that are currently being displayed in a view. This makes it easier to synchronize state between the master graph and the folded graph views in case this is not automatically performed by the default implementation.

Layout

• AbortHandler: Added the method hasCheckFailed that allows to query whether a check method was called after a stop or cancel event.
• Added the interface ILabelLayoutFactory that provides methods for creating, adding and removing node/edge labels to a LayoutGraph.
• IncrementalHierarchicLayouter: Added support for incremental group nodes (see IIncrementalHintsFactory.createIncrementalGroupHint). Incremental groups will be placed on a suitable position. The hints of their descendants are interpreted relative to the group node.
• SimplexNodePlacer: Added the property nodeCompaction that allows to place adjacent nodes of a layer in a more compact, stacked style.
• Added vertical alignment option for DefaultNodePlacer and SimpleNodePlacer. In addition to the previous compact child placement, siblings can now be aligned at top, center or bottom for example.
• GenericTreeLayouter: Added support for critical edges in DefaultNodePlacer, DendrogramPlacer, SimpleNodePlacer, LayeredNodePlacer and DoubleLinePlacer. Nodes connected to a critical edge will be center aligned. This highlights the paths along critical edges in the tree.
• GenericTreeLayouter: Added support for grouped edges in DefaultPortAssignment. Grouped edges will share the same port location at local root.
• Added the class GroupedNodePlacer that allows GenericTreeLayouter to place siblings into different groups.
• RecursiveGroupLayouter: Added the property InterEdgeRouter to specify the edge router that layouts the edges that cross group node bounds. Thus, it is not necessary to subclass the layouter to change inter-edge routing anymore.
• Added the layout stage KeepStrongPortConstraintsStage which ensures that layout algorithms that cannot handle port constraints keep the ports of edges with strong port constraints.
• Added the layout stage PortCandidateAssignmentStage which assigns edges to the ports specified by PortConstraints or PortCandidates after calling the core layout.

Improvements

Viewer

• Simplified the API related to context menus. Namely, custom context menus need no longer implement the interface yfiles.input.IContextMenu, and thus that interface and its usages in the API have been removed. See the API Changes for details.

  In addition, the context menu implementation of the demo framework was refactored accordingly. It is now a short, standalone class that depicts the integration of a custom context menu much clearer.

  The new property ContextMenuInputMode.swallowCloseClick specifies whether a mouse click in the canvas while a context menu is open should create a node or just close the menu.

• Modernized the CSS styling of the scrollbars of the GraphControl. The new styling was already part of the demo framework and thus used by various demos but it was not included in the library's CSS file lib/yfiles.css. Since the CSS class names have not been changed, custom styling will not be affected.

  In addition, the thumbs of the scrollbars now have a reasonable minimum size.

• Various performance improvements for the rendering and the selection handling. This affects, amongst others, ShapeNodeStyle and styles that use a GeneralPath.
• GraphEditorInputMode.detailSelectionRecognizer is now also applied for double clicks to determine the clicked item.
• GraphEditorInputMode and GraphViewerInputMode don't select or focus graph items styled with a void style (VoidNodeStyle, VoidEdgeStyle, VoidLabelStyle, and VoidPortStyle). The new property voidStylesIgnored specifies whether this feature is enabled.
• GraphEditorInputMode and GraphViewerInputMode: the new protected method shouldSelect can be overridden to determine whether an item can be selected in general.
• OverviewInputMode: The new property margins specifies margins for the visible area of the bound GraphOverviewControl. The new protected method updateVisibleArea provides further means for customizing the visible area.
• CompositePositionHandler: Added methods getPositionHandler and getHandle to retrieve an earlier added IPositionHandler or IHandle.
• PortRelocationHandles now triggers the EdgePortsChanged event of the GraphEditorInputMode.
• TableLayoutConfigurator: Improved support for routing algorithms.
• IGraph: The collection models of graph items returned by the properties nodes, edges, etc. now support the methods remove and clear to remove graph items from the graph. Note that calling the method add is still not allowed.
• GraphModelManager: New callback method onGraphChanged.
• LayoutExecutor: The new property considerViewportLimiter can be enabled to let the target viewport after a layout respect the ViewportLimiter of the GraphControl.
  The ViewportAnimation has a new property considerViewportLimiter for the same purpose.
• LayoutGraphAdapter now adds data providers that map each node, edge and label of a LayoutGraph to their corresponding IModelItem in the original IGraph. Especially, these data providers are available if a layout is run with a LayoutExecutor or the convenience methods LayoutExtensions.morphLayout and LayoutExtensions.applyLayout.
• GeomSupport: The new method createSmoothedPath creates a new path as copy of a given one but with smoothed bends.
• SimpleAbstractEdgeStyle: The new method updateArrows can by called from updateVisual to update the arrow visualisation if needed. Previously, the arrows had to be created anew in this case.
• A template style now automatically updates a visual it has created if the object in the item's tag is exchanged. Note that this check considers 'reference equality' not 'value equality'.
• CollapsibleNodeStyleDecoratorRenderer: The method addToggleGroupStateCommand is now public and static to make it easier to use it from custom code. Due to this, its signature was slightly changed.
• IconLabelStyle: The icon is added to the hit test area for mouse clicks and marquee selection. This can be switched off by overriding IconLabelStyleRenderer.shouldHitTestIcon.
• CanvasControl: Method fitContent now respects the ViewportLimiter. This might result in zoom levels greater than 1.0.
• CanvasControl: The new size change detection technique SizeChangedDetectionMode.SENSOR supersedes the previous timer-based technique as default since it provides instant notification about size changes. The property sizeChangedDetection can be used to specify the desired technique explicitly.
• DefaultDummyEdgeConverter now synchronizes the tag property of the first label if label synchronization is enabled.
• GraphCopier has been improved to facilitate manipulation of the copied items:
  • The new events NodeCopied, EdgeCopied, LabelCopied, and PortCopied are dispatched after a model item has been copied.
  • The method getOrCreateCopy is now public to facilitate copying of, for example, node tags.
• GraphClipboard: In hierarchically organized graphs, nodes are now pasted into their previous parent group, the group at their target position, or the root, depending on the new property parentNodeDetection.
• All data binding classes like GraphSource and TreeSource got new methods to get the graph item for a business object and vice versa.
• GraphSource and AdjacentEdgesGraphSource can now be used with only an edgesSource (in other words, without a nodesSource) if the property lazyNodeDefinition is enabled.
• TreeSource got support for group and location bindings, similar to the other data binding classes. Due to this, the signature of its methods createNode and updateNode changed.
• The HTML5 WheelEvent is now used as primary API for mouse wheel events. This does not change the behavior and the previous MouseEventWheel and MouseScrollEvent are still supported for older browsers.

Layout

• IncrementalHierarchicLayouter: The group transposition feature can now also be used in incremental layout mode (see DefaultLayerSequencer.groupTranspositionEnabled).
• ConstraintIncrementalLayerer: Improved handling of same layer constraints. In previous versions the layerer sometimes ignored same layer constraints even though there was a valid layering.
• IncrementalHierarchicLayouter: More compact placement of rotated as well as stacked labels.
• SmartOrganicLayouter: Now also considers the group node compactness if the property nodeEdgeOverlapAvoided is enabled (see property groupNodeCompactness).
• SmartOrganicLayouter: Improved node overlap removal (see property nodeOverlapsAllowed). Now, if the scope is set to SCOPE_SUBSET or SCOPE_MAINLY_SUBSET, the number of node overlaps that cannot be removed is reduced.
• LayeredNodePlacer: Reduced overlaps between edges and node labels for all routing styles.
• GridNodePlacer: Corrected alignment of child nodes and edge routing when there are node labels.
• AbstractRotatableNodePlacer.RootAlignment, DefaultNodePlacer and DendrogramPlacer: Instead of aligning bounding boxes including nodes and their labels, nodes are aligned directly with other nodes. Therefore a layout with node labels gets more compact and the alignment is consistent with that of graphs without node labels.
• DelegatingNodePlacer: Added support for a child comparator for children of local root nodes.
• GenericTreeLayouter now ignores labels with zero width or height in all distance calculations.
• GenericTreeLayouter: NodePlacer implementations now also use the specified spacing as minimum distance between different subtrees.
• PartialLayouter: Reduced the number of element overlaps if there are partial group nodes.
• ParallelEdgeLayouter now always separates parallel edges according to their direction. In other words, edges (v,w) and (w,v) are never placed interleaved.
• SALabeling and GreedyMISLabeling: Both algorithms now also consider the node/edge overlap penalty specified by a LabelCandidate.
• Improved abort handling for algorithms that use ConstraintIncrementalLayerer, ConstraintLayerer and TopologicalIncrementalLayerer. For large graphs these classes may require a long runtime that cannot be canceled by using an AbortHandler.

New Demos

• The new demo demo.yfiles.loading.browserify shows how to use yFiles with Browserify.
• The new demos demo.yfiles.loading.amdbundle and demo.yfiles.loading.scriptbundle explain how to create a single-file bundle of a yFiles-powered application.
• The new demo demo.yfiles.loading.noglobals shows how to use yFiles without creating an object in the global namespace.
• Two new tutorial steps show the automatic text wrapping and clipping feature of the classes TextRenderSupport and SimpleLabelStyle.

Demo Improvements and Bugfixes

• New modern styles for the nodes, edges, groups, and tables in the demos. These new styles show best practices with regards to both the various duties of a custom style in yFiles and good rendering performance, and last but not least they provide a contemporary look for the demos.
• The context menu of the demo framework is now a short, standalone class that depicts the main parts of the implementation and integration of a custom context menu much clearer.
• Improved the compatibility of the demo require.js implementation with the one of RequireJS and the AMD specification.
  • Return values are now passed to callbacks, as required by the AMD specification.
  • The baseUrl can now be configured with the method config in the same way as RequireJS.
  • Callbacks of the require function are now always executed asynchronously, like it is done by RequireJS.
• The Layout Style demos got support for the new features of the layout part.
  • The hierarchic layout style now has settings for (overall) grid placement and stacked placement of the nodes within a layer.
  • Added a settings panel and a sample graph for the new series-parallel layout style.
  • The tree layout style automatically uses its new multi-parent feature if appropriate for the current graph.
• The File Operations demo now shows in detail how a graph can be saved as file download.
• Reorganized the Incremental Hierarchic Grouping demo to make the relevant layout configuration more clear. In addition, the demo now uses the FixNodeLayoutStage that is part of the library instead of its custom implementation.
• BPMN Editor demo: The bpmn-layout and bpmn-viewer modules now list all of their dependencies to make AMD loading easier. To reduce startup time, the layout module is now loaded lazily in the demo when the first layout is actually calculated.
• WebWorker and Node.js demos: The Graph-To-JSON converter now supports group nodes. Moreover, the content rectangle is updated correctly after a layout calculation and only a single undo step is created for each calculation.
• Performance improvements for the node styles in the Custom Styles tutorial. When updating, these styles no longer set new transform if nothing actually has changed. Setting a new transform can trigger a complete re-paint even if the values of the transform remain the same.
• HTML Label Style demo: Corrected the placement of large labels.

Incompatible Changes

Changes in Default Behavior

• CanvasControl: The events Mouse2DEntered and Mouse2DExited have been erroneously fired when the mouse moved between inner elements. Now, these events are only fired when the mouse enters or leaves the bounds of the control, which is the intended and documented behavior.

  In addition, if a mouse button is pressed while leaving the bounds of the control, the Mouse2DExited event is now deferred until the button was released. As a result, this event does not interfere with the typical events of a mouse click and custom click handling code typically needs no special handling for this event. See the notes about known issues with mouse events for other peculiarities.

  Similarly, the methods onMouseEnter and onMouseLeave of Control were erroneously invoked in these cases. This has been corrected, too.

• TextEditorInputMode now ensures that the TextBox is visible in the viewport when starting editing. This behavior can be adjusted by creating a custom subclass and overriding ensureVisible().
• FoldedGraph.isDummy now throws an ArgumentOutOfRangeException for labels and ports that are not part of this view. Previously, this method returned true for such items. Since this exception is already thrown for nodes, edges, and bends that are not part of this view, the behavior is now the same for all types of graph items.
• GraphEditorInputMode now by default supports the new GraphCommands.DUPLICATE_COMMAND that is bound to keyboard shortcut Ctrl-D. This new behavior can be turned off with the duplicateAllowed property.
• The clipboard now supports copying and pasting of items independently from their owning elements. For example, single selected labels can be copied to other elements, as well as edges without their source and target nodes. This behavior can be reverted to the old behavior by setting GraphClipboard's independentCopyItems to GraphItemTypes.NONE.
• GraphEditorInputMode now by default allows for reversing selected edges using the Ctrl-R keyboard shortcut and the new GraphCommands.REVERSE_EDGE_COMMAND. This new behavior can be turned off with the edgeReversalAllowed property.
• ClickInputMode: If activeButtons includes MouseButtons.RIGHT, the original right click event is marked as handled if ClickInputMode's event handlers mark the higher level click event as handled.
• GraphEditorInputMode and GraphViewerInputMode: The default click actions that change the selection and create new nodes are only triggered on left mouse clicks now.
• Previously, ports at nodes and edges that were copied and pasted to and from the clipboard were all copied, even if there were no edges attached to them after the operation. Now those empty ports are not copied/pasted anymore unless the PortDefaults' autoCleanup property is set to false or they were unoccupied before the operation already. In order to restore the old behavior, where all ports were copied regardless of whether edges were adjacent to them, make sure to include them in the core predicate, since this behavior change just affects ports that had previously not been accepted by the core predicate function.
• CanvasControl: Method fitContent now respects the ViewportLimiter. This might result in zoom levels greater than 1.0.
• CanvasControl: The constructor sets the attribute tabindex="0" on the HTML element of the control if no such attribute is present. Previously, the value 1 was set which inadvertently resulted in a high priority for keyboard focus changes. You can set any other priority at any time.
• GraphEditorInputMode's NodeCreated event may now report nodes that are not part of the graph, when the user has dropped a node via NodeDropInputMode and its new folderNodeParentsAllowed property is enabled. By default this feature is disabled, though.
• IReparentNodeHandler's isValidParent method may now also be queried if the new property reparentToLeavesAllowed of GraphEditorInputMode is enabled. By default this property is disabled, though. Note that the method will also be queried if the reparent handler is used outside of the context of GraphEditorInputMode.
• IValueSerializerContext: In GraphML-writing code, the property instance now provides the object that should be converted, not the parent object. If you need to access the actual parent object, you can use the owner property on the GraphMLValueSerializerContext implementation of this interface.
• The event GraphMLIOHandler.QueryReferenceId is no longer fired for MarkupExtensions and other proxy objects for serialization. Now, it is only fired for the original object references.
• GraphEditorInputMode and GraphViewerInputMode: By default, graph items styled with a void style (VoidNodeStyle, VoidEdgeStyle, VoidLabelStyle, VoidPortStyle) won't be selected and won't get the focus.
• GraphEditorInputMode's clickHitTestOrder property default value has changed. Now it does not contain the redundant GraphItemTypes.ALL as the last element in the array anymore.
• GraphViewerInputMode: By default, clipboard commands are now disabled. This can be controlled with the new property clipboardCommandsEnabled.
• The default keyboard shortcut for deselecting elements (GraphCommand.DESELECT_ALL_COMMAND) has been changed to Ctrl+Shift+A. Ctrl+D is now the default shortcut for duplicating selected elements (GraphCommand.DUPLICATE_COMMAND). The latter can be disabled via the duplicateAllowed property.
• GraphEditorInputMode.shouldBeMarqueeSelected is no longer queried by the Paste command to determine the items which should be selected after paste. Instead, the new method GraphEditorInputMode.shouldBeSelectedAfterPaste is queried. Note that GraphEditorInputMode.shouldBeMarqueeSelected still is queried to determine the items which should be selected by marquee selection.
• Now, all pasted items are selected after a paste (previously: only nodes, edges, and bends). This can be configured via the new pasteSelectableItems property in GraphEditorInputMode and the corresponding shouldBeSelectedAfterPaste method.
• The hit test order for double clicks in GraphEditorInputMode and GraphViewerInputMode is now controlled through the dedicated doubleClickHitTestOrder property. By default, this hit test order prefers labels over other graph elements.
• If ClickInputMode is configured to deliver both single and double clicks, double clicks are not reported if the first click has created a new node or if cyclic selection is currently active. The same holds for TapInputMode and single/double taps.
• The visualization of the HandleType.ROTATE is now a single circle, its very thin central point has been removed.
• The segment index for label model parameters of SliderEdgeLabelModel and SideSliderEdgeLabelModel now is related to the visible segments for edges styled with PolylineEdgeStyle.
• If an IEditLabelHelper implementation is present in an ILabel's lookup, its editLabel method is now called in addition to an eventual owner's edit helper when the label text is edited. If implementations are present for both the label and the owner, editing is only allowed if both helpers return true. Additionally, the predicate method GraphEditorInputMode.shouldLabelBeEdited always has to return true, whether edit helpers are present or not.
• The label that is edited is now determined in the following order:
  1. If a label is explicitly provided as a command parameter or through a convenience method or is the only selected element, it is edited if the previous condition is satisfied. No other candidates are tried in that case.
  2. If a label owner is explicitly provided as a command parameter or through a convenience method, or is the only selected element, the first label that satisfies the condition above is edited if the previous condition is satisfied. If no such label exists, a new label is added, provided that the owner allows adding. In either case, no other candidates are tried.
  3. The first selected label for which the previous condition is satisfied.
  4. If multiple label owners are selected, the first owner that has a label for which the previous condition is satisfied (in which case that label is edited).
  5. If the method IEditLabelHelper.editLabel provides, for either an editable label or its owner, a different label instance, this instance is edited instead.
  6. Otherwise, a label is added if an eligible owner can be found (see below).
• If an IEditLabelHelper implementation is present in an ILabeledItem's lookup, its addLabel method is called to determine whether a label may be added and provide a suitable label instance. Additionally, the predicate method GraphEditorInputMode.shouldLabelBeAdded always has to return true, whether edit helpers are present or not. If the new label should be edited interactively after its creation (the default behavior), it must be editable, too, following the rules above. Therefore an IEditLabelHelper implementation usually should allow editing of label instances that it has created itself in addLabel.
• The label owner for which a label is added is now determined in the following order:
  1. If a label owner is explicitly provided as a command parameter or through a convenience method, or is the only selected element, a label is added if the previous condition is satisfied. No other candidates are tried in that case.
  2. If multiple label owners are selected, the first one for which the previous condition is satisfied.
• IncrementalHierarchicLayouter: Creating layer constraints or sequence constraints using a disposed of factory now throws an error (see LayerConstraintFactory and SequenceConstraintFactory).
• SALabeling and GreedyMISLabeling: Changed LabelCandidates default for overlap penalty of nodes and edges from 0 to 1. This means label overlaps are now considered more severe.

API Changes

• The event SizeChanged and related methods and properties have been moved from Control to CanvasControl. In addition, some timer-related properties have been replaced by more general variants to account for the new SizeChangedDetectionMode.SENSOR size change detection mode. Likely, customer code is not affected by neither change since the other classes that extend Control did not use the size changed-feature anyways.
• Control: Due to the improved event handling policy, the properties preventDefault, preventContextMenuPropagation, and preventEventPropagation are no longer needed and have been removed. Instead, the new properties preventKeyboardDefault, preventPointerDefault, and preventContextMenuDefault can be enabled to prevent the default action of the respective types of events.

• Changed SnapLine to support non-orthogonal snap lines as well: its properties from and to have been changed from type number to PointD, its property orientation was removed, and its constructors have been changed accordingly.

  Orthogonal snap lines are now modeled by class OrthogonalSnapLine. It extends SnapLine and provides the property orientation. Existing API uses either SnapLine or OrthogonalSnapLine, depending on whether it works only with orthogonal snap lines or not.

  As a consequence, in class SnapLineSnapResult, the property snapLine returns a non-orthogonal SnapLine and the property delta returns a PointD instead of a number. API related to GraphSnapContext still works only with orthogonal snap lines and uses OrthogonalSnapLine.

• The key property on SingleLineSnapLineVisual, FixedDistanceSnapLineVisual, and InBetweenSnapLineVisual, has been made read only.
• GraphModelManager's factory methods for creating the installers now have a less restrictive return type. The default implementation still returns the same types as before, though.
• GraphClipboard's factory methods for creating the predicates for the various cut and copy operations now require a second argument that is the graph that the predicate is working on. Usages typically use the graph in the graph control where the selection is also being used. If the default graph selection implementation is used. The graph instance can be obtained from its corresponding property.
• GraphModelManager's installer related properties now use a weaker return type to simplify subclassing with new functionality. The instances used are the same and can be down-casted accordingly to the more specific types as documented.
• IItemFactory: Added method createRedirectedGroupEdge.
• GraphClipboard's protected method copyGraphToRoot which was called by cut, copy, and paste to invoke the GraphCopier has been split: copyGraphToRoot now is called only by cut and copy. paste now invokes the new method pasteSubsetWithTargetAndCallback.
• The type of GraphMLAttribute's serializable property has been changed from boolean to the enum GraphMLSerializationMode.
• GraphEditorInputMode and TableEditorInputMode: return type of callback methods onAddLabel and onEditLabel has been changed from void to boolean. The return value should specify whether the operation in question was successful.
• Context menus need no longer implement any interface, and the interface yfiles.input.IContextMenu was removed. The members using that interface, namely the properties ContextMenuInputMode.menu, ContextMenuInputMode.clearMenu and PopulateContextMenuEventArgs.contextMenu, and the method ContextMenuInputMode.createMenu were removed as well. Since users create the context menu by themselves, there was no real need for these API members.

  Note that you'll now have to explicitly set the property PopulateItemContextMenuEventArgs.showMenu to true in your listener for the event PopulateItemContextMenu to show your menu. This was previously done automatically by the input mode if the property IContextMenu.isEmpty returned false.

• CollapsibleNodeStyleDecoratorRenderer: The method addToggleGroupStateCommand is now public and static, and its signature was slightly changed.
• TreeSource: Due to the new support for group and location bindings, the signature of its methods createNode and updateNode changed.
• ToolTip does no longer extend the class Control. This has no effect on its behavior.

Bugfixes

Viewer

• CanvasControl: The events Mouse2DEntered and Mouse2DExited have been erroneously fired when the mouse moved between inner elements. Now, these events are only fired when the mouse enters or leaves the bounds of the control, which is the intended and documented behavior.

  Similarly, the methods onMouseEnter and onMouseLeave of Control were erroneously invoked in these cases. This has been corrected, too.

• Properties ShinyPlateNodeStyleRenderer.radius, ShinyPlateNodeStyleRenderer.brush, ShinyPlateNodeStyleRenderer.pen and BevelNodeStyleRenderer.radius were not used consistently.
• Fixed memory leak that occurred when CreateEdgeInputMode was uninstalled.
• CreateEdgeInputMode: Fixed some problems with mixed mouse and touch input.
• When using an IEditLabelHelper and adding a label interactively, the helper's editLabel callback was called instead of addLabel.
• Newly added labels could have had an empty size when an IEditLabelHelper instance was registered.
• When a highlighted item was removed from the graph, the highlight was not cleaned up.
• Reparenting an empty group node displayed the target node highlight around the reparented node.
• The modified MoveInputMode created by MainInputMode.createMoveUnselectedInputMode changed the cursor to indicate a movable object even when the modifierRecognizer disabled moving.
• When both a group node and its child node were resized together the group node bounds shrunk to its original bounds once the child had reached the original bounds.
• CreateEdgeInputMode now copies the dummy edge's tag to the created edge. This could have caused issues when a listener for the event EdgeCreationStarted set a custom tag on the dummy edge.
• When the pressed status of the Shift key changed during a reparenting gesture of a node, the bounds of its containing group node were not immediately updated.
• The secondary multi-tap gesture was not recognized correctly.
• Labels whose positions were determined by NinePositionsEdgeLabelModel, SliderEdgeLabelModel, and SideSliderEdgeLabelModel might have disappeared when one or more edge segments were hidden under the source or target node.
• SnapContext: Snap results with a null tag were erroneously always discarded.
• BevelNodeStyle: Fixed update of drop shadow after radius has been changed.
• IconLabelStyle: Method getBounds in IconLabelStyleRenderer returned a valid rectangle even if the label layout was invalid. As a consequence, isVisible erroneously returned true for labels with invalid bounds.
• The name property of the class GraphMLAttribute was not considered during deserialization.
• Write events in GraphML were not always raised.
• After setting an ICanvasObjectGroup's visible property to false the group was still visible.
• CanvasControl.ensureVisible hasn't worked for bounds larger than the current viewport.
• Setting the view point on a CanvasControl with a width or height of 0.0 could cause an exception if a ViewportLimiter was enabled.
• GraphCopier threw an error if the source and the target graph were identical.
• When the SelectionPaintManager was disabled and a custom FocusPaintManager was used nodes styled with TemplateNodeStyle might not always have been updated after selection changes.
• GraphEditorInputMode and GraphViewerInputMode now respect their respective multiSelectionRecognizer for extending an existing selection via marquee.
• Fixed TableEditorInputMode exhibiting problematic behavior under certain circumstances when the GraphControl's graph is replaced.
• GraphML could write incorrect values for bend tags.

Layout

• SimplexNodePlacer fixed bug that disabled label compaction feature.
• AssistantPlacer fixed placement of assistant nodes. When all children of a node are assistants, they are all placed left/right.
• IncrementalHierarchicLayouter: Fixed bug that may cause an incorrect order of elements if the graph contains sequence constraints.
• IncrementalHierarchicLayouter: Fixed problem that may cause a very long runtime if the layouter is applied in incremental mode and the graph contains sequence constraints.
• IncrementalHierarchicLayoutModule: Now also considers incremental group nodes.
• IncrementalHierarchicalLayouter: Fixed bug that caused the maximum duration values specified for Layerer, Sequencer and NodePlacer to be overridden and not considered during the hierarchic layout.
• IncrementalHierarchicLayouter: Fixed error that may appear in incremental layout mode if there are group nodes that contain non-incremental elements.
• GenericTreeLayouter: Fixed root alignments to only take the child node bounds into account without considering edge segments in the subtree.
• IncrementalHierarchicLayouter: Fixed orientation of edge labels on selfloops connected to a group node.
• IncrementalHierarchicLayouter: Fixed error that occurred if an incremental group node has only incremental descendants.
• IncrementalHierarchicLayouter: Fixed problem that caused bad results when assigning top or bottom layer constraints (i.e., LayerConstraintFactory.addPlaceNodeAtTopConstraint or LayerConstraintFactory.addPlaceNodeAtBottomConstraint) to fixed elements.
• IncrementalHierarchicalLayouter: Fixed a bug that caused collinear bends in some edge routes.
• DoubleLinePlacer: Fixed the distance between the local root and the upper line to match the specified spacing. The distance between the two lines can now be defined in relation to the spacing.
• ClassicTreeLayouter: Fixed StackOverflow exception occurred in trees with high depth.
• TreeReductionStage: Fixed wrong handling of group nodes which may cause a WrongGraphStructure error as well as broken routes of edges incident to group nodes.
• SimpleNodePlacer: Fixed broken edge routes that may appear for edges on nodes with external labels if integrated node labeling is enabled.
• CopiedLayoutGraph: Fixed an error that occurs when nodes or edges are added to the copied graph without removing them before calling commitLayoutToOriginalGraph.
• ShortestPaths: Fixed an error that occurred when applying the Dijkstra or Bellman-Ford algorithm to an empty graph.

yFiles for HTML 1.2.1.4 - Changes Since 1.2.1.3

Bugfixes

• SimpleLabelStyle: In multi-line labels, each line repeated the text of the first line if stringTrimming was set to another value than StringTrimming.NONE. Since the actual bug was in class TextRenderSupport, customer code that used that class directly was affected as well.
• IncrementalHierarchicLayouter: In non-incremental mode, sequence constraints may not have been respected.
• IncrementalHierarchicLayouter: Optimized the sequence of group nodes if 'place at head/tail' sequence constraints are defined.
• GraphSource, AdjacentEdgesGraphSource, and AdjacentNodesGraphSource: Corrected several problems in the method updateGraph() that could result in errors like 'Key not found' and 'Edge not in this graph'.

yFiles for HTML 1.2.1.3 - Changes Since 1.2.1.2

Bugfixes

Viewer

• Event location of the various TapInputMode events was not always updated properly.
• Orthogonal edge editing could throw an error if edges were removed during interaction with an orthogonal edge.
• Fixed problems when exporting SVG content from the CanvasControl if HTML5 Canvas rendering was used and non-default viewport settings were applied. As a result, images could have been clipped incorrectly.
• Fixed a regression introduced in 1.2 which rendered the shapeRendering and imageRendering properties in CanvasControl useless. The properties are now applied correctly to the SVG DOM during rendering and image export.
• In Internet Explorer, DragOver events could have been reported although the actual mouse location did not change. This happened if the DOM element under the mouse pointer was switched without the mouse being moved, and possibly resulted in a loop and excessive CPU usage, e.g. during drag and drop operations onto the GraphControl with preview and snapping enabled.
• Included a workaround for a shortcoming of Internet Explorer: multiple consecutive whitespace characters in label text are displayed as a single space. The workaround replaces each non-newline whitespace with the unicode non-breaking space character \u00A0 . This workaround must be enabled explicitly. Its details are described in the Known Issues .
• GraphControl: Prevent an error during updateVisual if the GraphControls's HTML elements were removed by external code. This could happen especially in Internet Explorer if one of the parent elements of the GraphControl was cleared with element.innerHTML = "".
• GraphML serialization could not correctly handle undefined values and has thrown an error instead. The new property SerializationProperties.UndefinedHandling controls how undefined values are serialized.
• MouseEventArgs.button was set to MIDDLE for all but the left and right mouse button. This two were correctly reported. As a consequence, Mouse2DEventArgs.changedButtons had the same error.
• GraphSourceBase.updateGraph threw an error if the object instances in groupsSource had been changed. This error affected GraphSource, AdjacentNodesGraphSource, and AdjacentEdgesGraphSource.
• AdjacentEdgesGraphSource.updateGraph: instead of retaining edges that should remain in the graph, the edges were deleted and re-created anew.
• Correct the Developer's Guide section about custom XML namespace mappings for GraphML serialization and showcase the described annotations in the Custom Styles tutorial and other demos.

Layout

• IncrementalHierarchicLayouter: corrected wrong node placements in graphs with groups if sequence constraints are used.
• Polyline.EdgeRouter: Fixed rare error that may occur for graphs where only a subset of edges is routed, see EdgeRouter.SphereOfAction.

yFiles for HTML 1.2.1.2 - Changes Since 1.2.1.1

Bugfixes

Viewer

• RotatedSliderEdgeLabelModel: A bug could cause the label to lie at infinite coordinates. This could only occur in very rare occasions if the first or last edge segment is orthogonal and the source or target port is completely outside the node boundaries. As a result, the label becomes just invisible in most cases, but code that does not properly handle infinite coordinates could possibly break due to numeric instabilities.
• An edge whose source or target port is owned by another edge (edge-to-edge connection) was always drawn in the background if grouping was enabled instead of in front of the related groups. Now, such an edge is drawn in front of these groups, with the same z-index as a similar edge from node to node would get.
• Nodes can now be reparented with a touch gesture, by touch-dragging a node onto its new parent. Previously, that was only possible with a mouse drag.
• MoveViewportInputMode no longer fires the DragFinishing and DragFinished events for simple clicks without any mouse movement.
• GraphViewerInputMode: The event CanvasClicked specifies now the correct type for its event args, that is ClickEventArgs.
• In Internet Explorer, Mouse2DMoved events could have been reported although the actual mouse location was not changed. This happened if the DOM element under the mouse pointer was switched without the mouse being moved, and possibly resulted in a loop and excessive CPU usage.
• Moving the focus to the left was not possible since the command was not connected to the intended keyboard shortcut Control + Left Arrow.
• NodeDefaults, EdgeDefaults and all other Defaults: it was erroneously possible to assign null to the style property. Now, the property throws an ArgumentNullException in this case.
• GenericYList: Calling insert on an empty list has thrown an exception.
• Custom handles for graph items might not have been updated correctly after changes of the selection due to a problem in InputModeController. The default handles were not affected by this problem.

Layout

• CircularLayouter: Fixed bug that may cause node overlaps.
• CopiedLayoutGraph: Fixed problem that may cause movement of label boxes in the original graph even if method CopiedLayoutGraph.commitLayoutToOriginalGraph is not called.
• IncrementalHierarchicLayouter: Fixed label placement for octilinear selfloops with the same side constraints for source and target port.
• IncrementalHierarchicLayouter: Fixed rare error that may appear in incremental layout mode if there are group nodes that contain non-incremental elements.

Demo Improvements and Bugfixes

• Deployment tool: The default blacklist of the obfuscation step contains now much more names of common HTML5 and JavaScript APIs. Thus, the tool will no longer erroneously obfuscate these API usages in your source code.
• All demos that use a LayoutExecutor or the morphLayout method now set a custom finishHandler that checks for exceptions during the layout calculation and handle them appropriately. If a custom finishHandler is set, handling such exceptions is its responsibility.

Documentation Viewer Improvements

• Camel-Case search results were not listed in the search results page.
• Navigating to a type member now automatically expands the member's documentation.
• Typing now automatically focuses the search field.
• Improved layout of the search results page.
• The middle mouse button now closes tabs.
• Added a "Constants" category for static final fields.
• Type parameters were not correctly replaced in type parameter bounds.
• The quick search results box did not always close when choosing a search hit.
• Improved linking from overrides and implementations to the overridden/implemented members.
• Fixed sporadic error messages about circular JSON structure.
• The type member overview bar sometimes highlighted the wrong member section.
• Types that are mentioned in the Developer's Guide are now considered more important search hits.
• Inherited member documentation was sometimes missing.
• Tables were not rendered correctly in Internet Explorer 9.
• The viewer sometimes did not start correctly in Internet Explorer 9.
• "Show Usages" now also shows developer's guide references.
• Searching for event add/remove methods did not work.
• Filtering the Developer's Guide tree view now works correctly.
• Links to relevant demo applications were missing for some API members.
• Closing a tab sometimes opened an additional tab with a nonfunctional URL.

yFiles for HTML 1.2.1.1 - Changes Since 1.2.1

This bugfix release brings improvements for the new documentation viewer and for some of the demo applications. The yFiles for HTML library is not changed by this release, except for the incremented version number.

Demo Improvements and Bugfixes

• Include the new Events demo and the new Sparkline Styles demo in the Viewer package.
• Layout Styles demo: The initial layout might have failed because the needed module yfiles/layout-misc was not properly 'required'.
• All demos with a layout algorithm now use the MinNodeSizeStage to gracefully handle graphs with nodes with a width or a height of '0'. Without that stage, the layout will throw an exception if the graph contains such a node.
• In some cases, errors did not trigger the error reporting dialog but were only shown in the developer tools of the browser.
• Mindmap demo: Moving nodes without text resulted in an error.
• Mindmap demo: If opening the initial data file fails, the demo now shows a fallback graph.
• ReshapeHandleProvider demo: Shrinking the nodes that preserve their aspect ratio no longer throws an error when their width or height becomes '0'.

Documentation Viewer Improvements

• The drop-down menus of the member navigation bar were not visible.
• Added missing images for some API pages.
• Camel case search hits were visible only in the quick search results box. They are now also listed on the search results page.
• Because the number of search results was unlimited, the browser would freeze for searches with a large number of hits. The maximum number of search results is now limited.

yFiles for HTML 1.2.1 - Changes Since 1.2.0.6

The main focus of this release is on new and enhanced tools for developers and on more and improved demo applications.

The yFiles for HTML library in this release maintains compatibility with the previous versions of 1.2 and brings small improvements and corrections like a regular bugfix release. All users of previous versions of 1.2 are therefore strongly encouraged to update to this release.

Enhanced Development Support

• Support for IntelliSense for the yFiles API in Visual Studio 2012 and newer. That includes statement completion, parameter information for methods, and descriptions in the Quick Info pop-ups.
• The new documentation viewer makes it much easier to quickly find specific API and Developer's Guide documentation.
• Various improvements and corrections of the documentation in yfiles-api.js: Removed left over private API members, replaced invalid annotations, added @static annotations, fixed links to events and framework classes, improved documentation for inherited members, improved the formatting, added information about runtime complexity and preconditions of algorithms.
• New Grunt-based deployment tool that replaces the previous Java-based obfuscator and offers additional features: It can combine the three files that form a yFiles module into a single file and simplify the yFiles AMD 'define' statements in a standard conform way. See the tool's description for more details.
• The tool yfiles.help now shows the inheritance hierarchy and implemented interfaces of yFiles types.
• Method and property parameter checks now display which parameters were wrong instead of just warning about a mismatch.

New and Improved Demos

• Added install and start scripts for a local Node.js Express server that can serve the demo content. Using a server prevents security issues when running the demo applications directly from the filesystem.
• The demo demo.yfiles.layout.LayoutStyles now provides a convenient graphical user interface to explore the vast configuration options of the most used yFiles layout algorithms.
• Added new showcase application demo.yfiles.graph.mindmap.
• The new demo demo.yfiles.graph.basiclayouter can serve as a starting point for custom yFiles for HTML applications.
• Added new demo demo.yfiles.angular that shows the integration of yFiles for HTML with Angular JS.
• Added new demo demo.yfiles.graph.events that demonstrates the various events of the input mode, the graph control, and the graph.
• Added new demo demo.yfiles.style.sparkline that shows how to use a third party visualization framework for a custom node style.
• Added new demo demo.yfiles.loading.nodejs that runs a yFiles layout algorithm in a Node.js server.

Improvements and Corrections

• Prevent overlaps of collapse buttons and group node labels in several demos.
• Simple Custom Style Demo and Style tutorial: Show a custom group node style.
• Simple Custom Style Demo and Style tutorial: Label didn't show line breaks created with Ctrl+Return.
• Image Export Demo: Prevent timing issues by calling the export code in an event handler of the load event instead of calling it directly.
• Completely revised the Simple Dojo Demo: More concise and clean code, use of modern Dojo syntax and theme.
• The File Operations demo now uses a Node.js server for the server-based load/save operations.
• All Data Binding demos now use yfiles.drawing.StringTemplateNodeStyle instead of yfiles.drawing.TemplateNodeStyle since it is better suited for this use case.
• Preferred Label Placement Demo: Switched off the label style's autoFlip feature so the "Add 180° on Right Side" option has a visible effect.
• Bpmn Editor Demo: The implementation of the methodConnectedIconLabelStyle.isVisible was not correct, resulting in a disappearing icon during movements.
• Bpmn Editor Demo: Make sure that a new label of a pool node gets a suitable location by using a custom EditLabelHelper in PoolNodeStyle.
• The StylePanel used for the palette in several demos and some other helper GUI components are now implemented in plain JavaScript/HTML and no longer extend class yfiles.canvas.Control.
• Various code and documentation improvements in the Input demos, for example switched off unnecessary interaction to highlight the main point of each demo.
• Various smaller code improvements in the Getting Started tutorial.
• All demos that execute a layout and set a custom finishHandler now check for exceptions during the calculation and handle them appropriately. If a custom finishHandler is set, handling such exceptions is its responsibility, and thus, such exceptions were previously silently discarded in these demos.
• Context menus are now opened centered on the GraphControl if the context menu key is pressed. Demo code shows how to correctly handle this key event in Chrome, Firefox, and Internet Explorer.
• Context Menu Demo: Fixed context menu opening in empty canvas locations.
• All demos: Added links to related sections in the Developer's Guide and the API doc.
• All demos: Realize private helper methods as private functions to keep the demo API concise.

Minor Improvements

• The rendering performance of the built-in node styles has been optimized, especially in Chrome and Internet Explorer.
• GraphViewerInputMode and GraphEditorInputMode: The child clickInputMode now delivers both left and right clicks.
• OverviewInputMode and GraphOverviewControl have been optimized to improve the user experience when used on touch devices.
• OverviewInputMode can be customized more easily. Minor modes can be replaced and adjusted, as well as the list of available default command bindings can be modified.
• The tooltip is now a child of the <body> instead of the <html> element.
• The adapter classes GraphSource, AdjacentNodesGraphSource, AdjacentEdgesGraphSource, and TreeSource now accept IEnumerables as values for the properties nodesSource, edgesSource and groupsSource, in addition to arrays and plain JavaScript objects.

Bugfixes

• DefaultArrow.length did not take the scale factor into account, sometimes leading to gaps between the edge and the arrow.
• Custom selection visualizations using EdgeStyleDecorationInstaller were not animated correctly.
• Custom selection visualizations using EdgeStyleDecorationInstaller in DecorationZoomMode.MIXED or DecorationZoomMode.VIEW_COORDINATES did not work correctly together with BridgeManager.
• EdgeStyleDecorationInstaller can now be used with self loops without bends, too.
• ClickInputMode: Canceling the mode during clicks didn't work correctly and as a result, the location reported for the next click might have been wrong.
• GeneralPath.transform and other GeneralPath methods using Matrix2D applied the transformation matrix incorrectly in the case of a rotation.
• Running any label placement algorithm had no effect for node/edge labels if the properties removeNodeOverlaps/removeEdgeOverlaps were enabled because all potential candidates were erroneously rejected.
• NavigationInputMode tries to request the mutex when an expand/collapse or enter/exit command is executed. This fixes an issue where ClickInputMode was inadvertently handling the click on a group collapse button in case that ClickInputMode.clickHandlingMode was set to DOUBLE_CLICK_ONLY.
• Included a workaround for a problem with the context menu key in Google Chrome. Since the workaround requires auxiliary changes in customer code, it must be enabled explicitly. The details are described in the Known Issues .

Changes in Default Behavior

• GraphEditorInputMode and GraphViewerInputMode: The default click actions that change the selection and create new nodes are only triggered on left mouse clicks now.

yFiles for HTML 1.2.0.6 - Changes Since 1.2.0.5

Bugfixes

• The validation of a license that contains a watermark always failed for users of Internet Explorer with a Finnish locale. Only this specific setup is affected.
• UndoEngine: due to incorrect calculation of time, successive commands that should have been part of the same undo unit were in fact placed in different units.
• Group nodes were resized unexpectedly when moving them together with their children if the children were selected before the group.
• GraphML serialization of arrays was broken when the file yfiles-typeinfo.js was included.
• The modules yfiles/complete and yfiles/layout did not list all modules from the layout part as dependencies. yfiles/layout-familytree, yfiles/layout-orthogonal-compact, yfiles/layout-polyline, and yfiles/layout-radial were missing.

Layout

• MultiPageLayouter: Fixed bug that caused that an AbortHandler attached to the input graph was ignored.
• IncrementalHierarchicLayouter: Fixed routing style violations in octilinear grouped edges.
• MultiPageLayouter: Fixed error that may occur for specific mappers for the key MultiPageLayouter.EDGE_ID_DP_KEY.
• IncrementalHierarchicLayouter: Fixed error that could occur when octilinear edges are attached to group nodes.
• HVTreeLayouter: Fixed bug that may cause edges with reversed direction if the layout isn't run in buffered mode.
• PortCandidateSet: Fixed bug that caused method findMatchingCandidate to return the entry with the highest cost instead of the lowest cost if the candidate matcher is created with method PortCandidateSet.createMatcher.
• DirectedOrthogonalLayouter: Fixed bug that caused an error if a mapper for the key PortConstraintKeys.SOURCE_GROUP_ID_DP_KEY is registered to the input graph but no mapper for the key PortConstraintKeys.TARGET_GROUP_ID_DP_KEY is registered.
• ComponentLayouter: Fixed bug that caused an error if the style is set to yfiles.layout.ComponentArrangementStyles.MULTI_ROWS_HEIGHT_CONSTRAINT or MULTI_ROWS_HEIGHT_CONSTRAINT_COMPACT and all components exceed the preferred height.
• IncrementalHierarchicLayouter: Fixed bug that caused first or last segments of edges to be too short to span all associated labels.
• MultiPageLayouter: Fixed bug that may cause non-orthogonal edge routes.
• TreeReductionStage: Fixed bug that may cause a WrongGraphStructure error if the input graph contains group nodes with incident edges.
• TreeLayouter: Fixed bug that may cause an error if the input graph is a CopiedLayoutGraph that consists of multiple connected components and the layouter uses the LayeredNodePlacer, if the property childPlacementPolicy is set to yfiles.tree.ChildPlacementPolicy.ALL_LEAVES_ON_SAME_LAYER.

yFiles for HTML 1.2.0.5 - Changes Since 1.2.0.4

Bugfixes

• Strings where the last entry would consist of a single character were not tokenized correctly.
• Obfuscator: Building the obfuscator failed because the download location of one of the prerequisites of Mozilla Rhino (xmlbeans) is no longer valid. As a workaround, that library is now downloaded from the new location in advance.
• yfiles.lang.Class.findMembers and related methods like getMembers could return incorrect results.
• Utility method yfiles.help.createStub was creating incorrect code for 'default' constructors.
• TemplateNodeStyle, StringTemplateNodeStyle: In Internet Explorer, some elements in template defs sections were removed from the DOM by garbage collection even if still referenced.
• TemplateNodeStyle, StringTemplateNodeStyle: Elements in defs sections within a template script tag, that are not part of a certain template were never cleaned up if not needed anymore.
• Pen#lineJoin default value attribute differed from the actual default value PenLineJoin.MITER.

Automatic Layout

• IncrementalHierarchicLayouter and RankAssignments: Fixed possible exception that may occur if the maximal duration of the algorithm is limited.
• IncrementalHierarchicLayouter: Fixed bug that may cause overlaps of edge labels with preferred placement at source/target.
• polyline.EdgeRouter: Fixed rare exception that mainly appears if there are overlapping nodes.
• PartialLayouter: Fixed bug that may cause broken edge routes for edges incident to incremental group nodes if option routeInterEdgesImmediately is enabled.
• CompactOrthogonalLayouter: Fixed possible exception caused by nodes without node-ids. This problem may only appear if the inter edge router is set to ChannelInterEdgeRouter.

yFiles for HTML 1.2.0.4 - Changes Since 1.2.0.3

Bugfixes

• Corrected an error in the image export that prevented creating images for (text) labels with non-ASCII characters. Ultimately, the problem was in the method SvgExport.exportSvgDataUrl.
• When both a group node and its child node were resized together the group node bounds shrunk to its original bounds once the child had reached the original bounds.
• Fixed problem in LayoutGraphAdapter where label candidates for edge labels were not always determined correctly.
• RotatedSideSliderEdgeLabelModel: Label model parameters of this model were serialized as the respective parameters of RotatedSliderEdgeLabelModel. Thus, after loading, the positions of the labels are the expected ones but the label models changed.
• RotatedSliderEdgeLabelModel: Parameters with ratio 0.5 were not correctly deserialized from GraphML.
• FoldedGraph detects more carefully what has changed before invoking the methods CreateDummyEdgeAppearance and ChangeDummyEdgeAppearance of IDummyEdgeConverter. Previously, in some cases, these methods were called to often or not at all.
• FilteredGraphWrapper: The various edgesAt methods erroneously returned edges that were marked as hidden by the edgePredicate. The methods degree, inDegree, and outDegree are based on these methods and were affected, too.
• GraphSnapContext: Snapping nodes to vertical edge segments was not working if nodeToEdgeDistance was set to 0.0.
• When snapping was disabled temporarily (using Ctrl) during a move gesture, the moved item snapped after finishing the gesture, anyway.
• FoldedGraphUndoSupport didn't add the correct bend information to its internal data structures.
• TemplateLabelStyle: The preferredSize was not correctly read from GraphML files.
• CollapsibleNodeStyleDecorator and ShadowNodeStyleDecorator: Lookup requests for ISizeConstraintProvider, IGroupBoundsCalculator, and IShapeGeometry are now correctly delegated to the wrapped style.
• The EdgeStyleDecorationInstaller did not copy the tags of dummy ports and edges used when displayed in view coordinates (zoomMode == DecorationZoomMode.VIEW_COORDINATES).

Automatic Layout

• OrthogonalLayouter failed almost always with an exception if the Mixed Layout style was used.
• IncrementalHierarchicalLayouter: Fixed possible exception caused by inconsistent grouping. The problem may only occur in incremental mode and if there are sequence constraints.
• IncrementalHierarchicLayouter: Fixed rare exception that may appear for grouped graphs containing nodes with fixed coordinates hint.
• IncrementalHierarchicLayouter: Fixed bug that breaks incremental hints of grouped edges in incremental layout mode.
• IncrementalHierarchicLayouter: Fixed bug that may cause a wrong order of fixed (non-incremental) elements if the layouter is applied in incremental mode and the graph contains sequence constraints.
• IncrementalHierarchicLayouter: Fixed possible exception that may occur for grouped graphs in incremental mode with recursive group layering enabled.
• IncrementalHierarchicLayouter Fixed possible exception caused by inconsistent grouping.
• GenericTreeLayouter: Fixed issue that caused too large group nodes when label consideration is enabled and the layout is not oriented top-to-bottom.
• GenericTreeLayouter: Fixed issue that causes group nodes to be too small to include all edge labels when the edge connects to a child of an inner group node.
• GenericTreeLayouter: Fixed issue that causes group nodes to be too small for node halos.
• GenericTreeLayouter: Fixed issue that produces unnecessary large group nodes if node labels are considered.
• TreeReductionStage: Fixed wrong handling of group nodes which may cause a exception as well as broken routes of edges incident to group nodes.
• Fixed exception when using AssistantPlacer together with distributed port assignment.
• CircularLayouter: Fixed issue that may cause infinite/too large node coordinates for unfavorable input settings, for example, if the maximal deviation angle is to small. Note that such coordinates may produce infinite looping or other exceptions.
• BorderLine: Fixed bug in method grow that may result in an exception because the minimum value of a BorderLine becomes greater than the maximum value.
• AbstractLabelingAlgorithm: Fixed bug that may cause removal of labels that don't overlap with other elements if option removeNodeOverlaps is enabled.
• Polyline.EdgeRouter: Fixed bug that may cause zero length routes of edges whose start and end point are at the same location.
• BusRouter: Fixed exception that may appear for graphs containing isolated nodes with self-loops.

yFiles for HTML 1.2.0.3 - Changes Since 1.2.0.2

Bugfixes

• Template styles: <defs> sections were not handled correctly in 1.2.0.2, only.
• In Internet Explorer, SvgExporter did not correctly export SVGs with use elements.

yFiles for HTML 1.2.0.2 - Changes Since 1.2.0.1

Bugfixes

• Fixed ellipsis character not always showing correctly in SimpleLabelStyle and TextRenderSupport due to source code file encoding issues.
• Template Styles: Fixed non-functional bindings in certain attributes like 'x' and 'y' in Internet Explorer.
• The IRenderContext instance created by CanvasControl.createRenderContext was not usable for SVG export with CanvasControl.createVisualContent. Note that for SVG export, it is still recommended to use class SvgExport instead.
• GraphSnapContext: Snapping nodes to vertical edge segments was not working if nodeToEdgeDistance was set to 0.
• Fixed broken methods LayoutExtensions.createIncrementalLayerConstraintFactory and LayoutExtensions.createSequenceConstraintFactory.
• GraphMLIOHandler: method addNamespace had no effect, and adding a custom schema with addSchemaLocation triggered an error.
• SvgExport: Fixed clip-path not working in Firefox when exporting an SVG.
• SvgExport: property scale did not throw an error for invalid values.
• Cordova/PhoneGap toolkit demos: the setup step for the Contacts plugin was missing, some small bugfixes for the contacts functionality, and more status notifications.

Layout

• IncrementalHierarchicLayouter: Fixed bug that may cause edges with zig-zag paths if there are swimlanes and integrated edge labeling is enabled.
• IncrementalHierarchicLayouter and TopologicalIncrementalLayerer: Fixed bug that may cause unwanted same-layer edges between incremental nodes.
• IncrementalHierarchicLayouter: Fixed possible error caused by an inconsistent order of group nodes.
• CircularLayouter: Fixed issue that may cause infinite/too large node coordinates for unfavorable input settings, for example, if the maximal deviation angle is chosen to small. Note that such coordinates may produce infinite looping or other errors.

yFiles for HTML 1.2.0.1 - Changes Since 1.2

Improvements

• Changed the way HTML5 Canvas based rendering looks when the canvas is being resized. The previous implementation caused artifacts that could be noticed during resize operations in hybrid rendering mode.
• Moved some consistency checks that were erroneously part of the main library to the type checking development aid. This will result in a slight performance improvement.
• The new development assistance features that were introduced in 1.2 are now described in detail in the developer's guide in the chapter Getting Started.
• The Simple Dojo Demo can now be loaded from the file system in all browsers since its custom Dojo widget doesn't depend on a separate HTML file anymore.

Bugfixes

• Restored compatibility with older template style definitions. Now, it's possible to dynamically add templates to the 'template_svg' svg element after instantiating another template style. Existing instantiated templates will not be updated until a new template is created, though. The incompatible changes section of version 1.2 was updated accordingly.
• Fixed repaint issues in the Graph Overview for future (at the time of writing) Chrome releases that were caused by subpixel layouts.
• Fixed non-dirty background RenderVisuals not always being repainted during resize and transform changes.
• Fixed the error handling in yFiles demo framework applications that were created with the option catchErrors:'true'.
• BPMN Demo: use the correct CSS class names for the styling of the cursor during drag-and-drop.
• BPMN Demo: Improved creation of new edges to not share the same port instances which previously could result in bogus edge paths.
• Fixed broken API documentation in places where generic type parameters were used and referenced in both the developer's guide and the API Reference.
• SimpleLabelStyle constructors that take a Typeface, but not a font size as a parameter do not override the typeface's font size with the default value of 12 anymore.
• Fixed TextRenderSupport.PlaceText always returning the original text if StringTrimming.NONE was passed in.

Layout

• Integrated labeling of the hierarchic layout style: preferred label placements Along Edge were not calculated correctly.
• yfiles.router.polyline.EdgeRouter: Fixed wrong heuristic bend calculation if grid is used.
• BusRouter: Fixed error in BusRepresentations that could appear if the input graph contains overlapping nodes.
• FixedGroupLayoutStage: Fixed canLayout which changed the structure and layout of the graph.

yFiles for HTML 1.2 - Changes Since 1.1.1.6

Major Features Added

• Support for HTML5 Canvas-based rendering has been added. Especially suitable for low-detail, high-volume renderings, HTML5 Canvas rendering is now directly supported. SVG and Canvas-based renderings may be mixed and rendering can be switched on the fly for level-of-detail scenarios, etc.
• Complete TypeScript 1.0 language bindings included in the package simplify type-safe and compiler-checked development in Visual Studio and other IDEs.
• A new optional GWT overlay enables convenient coding in Java and Java IDEs against the library. The bundled demos in the main package have been adjusted accordingly.
• Improved developer productivity with added development aids like debugging support, dynamic source code generation tooling, and live object manipulation utilities to enable interoperability with third party OOP JavaScript frameworks.
• Added easy support for HTML overlays, fly-outs, and pop-ups to the graph control.
• New classes AdjacentNodesGraphSource and AdjacentEdgesGraphSource provide data binding support for a much larger number of user data models.
• New and improved template styling support can now intelligently handle definition references and allows for embedding templates directly into GraphML or special script tags.
• Built-in support for text-wrapping, clipping, and ellipses, as well as performance optimized text-measuring has been added for the built-in styles and is made available for custom style implementations.
• Added ItemHoverInputMode to conveniently handle hover state changes.
• Automatic JSON serialization and deserialization of native JavaScript objects added to GraphML I/O.
• Added customizable internationalization and localization for commands, key bindings, and undo event descriptions.
• Added support for web worker environments. This allows for layout and algorithm calculations in separate threads.
• Added new sample applications that showcase the enhanced labeling features, multi-page layout, new data-binding helper classes, multi-threaded layout execution, edge bridges, preferred label placement, custom snapping and selection handling, style decorations and style implementations.

Layout

• Added new layout algorithm RadialLayouter that places nodes on concentric circles. Edges are routed in a radial fashion using one of several routing strategies.
• Added support for terminating (layout) algorithms prematurely. To this end, new class AbortHandler provides methods to specify how long an algorithm may run until it is gracefully terminated (see method stopDuration) and immediately terminated (see method cancelDuration), respectively.

  The following layout algorithms have at least rudimentary support for immediate termination:
  Layout Algorithms	Routing Algorithms	Other Algorithms
  BalloonLayouter CircularLayouter CompactOrthogonalLayouter DirectedOrthogonalLayouter GenericTreeLayouter GRIP HierarchicGroupLayouter HierarchicLayouter IncrementalHierarchicLayouter OrganicLayouter OrthogonalGroupLayouter OrthogonalLayouter PartialLayouter RadialLayouter RecursiveGroupLayouter SmartOrganicLayouter	BusRouter polyline.EdgeRouter OrganicEdgeRouter OrthogonalEdgeRouter	GreedyMISLabeling SALabeling
  The following layout algorithms also support graceful early termination:
  Layout Algorithms	Routing Algorithms	Other Algorithms
  HierarchicGroupLayouter HierarchicLayouter IncrementalHierarchicLayouter OrganicLayouter SmartOrganicLayouter	polyline.EdgeRouter	SALabeling

• Introduced concept of node halos. Halos are reserved space around a node in which layout algorithms will not place other graph elements. Node halos are modelled using class NodeHalo.

  The following layout algorithms support node halos:
  Layout Algorithms	Routing Algorithms	Other Algorithms
  BalloonLayouter CircularLayouter CompactOrthogonalLayouter ComponentLayouter DirectedOrthogonalLayouter GenericTreeLayouter IncrementalHierarchicLayouter OrthogonalGroupLayouter OrthogonalLayouter RadialLayouter RecursiveGroupLayouter SmartOrganicLayouter TreeLayouter	polyline.EdgeRouter SelfLoopLayouter	GreedyMISLabeling SALabeling InsetsGroupBoundsCalculator MinimumSizeGroupBoundsCalculator

• SmartOrganicLayouter: Added support for partition grid layout. See class PartitionGrid.
• Optimized the module dependencies to reduce loading times. The module layout-hierarchic does no longer depend on the modules layout-router and layout-tree, and the module layout-orthogonal does no longer depend on the module layout-router.

Minor Features Added

• GraphSource: Added property lazyNodeDefinition. If this property is enabled, objects that are not contained in nodesSource can be used as source and target of edges as well.
• GraphSource: Added property nodeLabelBinding that specifies the label binding for nodes, similar to the edgeLabelBinding for edges.
• ItemDropInputMode is a new DropInputMode for IModelItems that facilitates subclasses to support preview and snapping of the dragged item as well as highlighting potential drop targets.
  NodeDropInputMode and StripeDropInputMode have been refactored to use ItemDropInputMode as base class.
• Node ports can now be moved by dragging their IHandle.
• Code completion now supports generics in supporting IDEs as part of the JSDoc3 support.

Layout

• BalloonLayouter: Added support for integrated node and edge labeling. See new properties integratedEdgeLabeling, integratedNodeLabeling, and nodeLabelingPolicy.
• BalloonLayouter: Added support for different policies to align nodes having the same root node. See new property childAlignmentPolicy.
• BalloonLayouter: Added support for interleaved child node placement. With interleaved placement, child nodes are placed at different distances to their parent node to achieve a more compact layout. See new property interleavedMode.
• IncrementalHierarchicLayouter: Improved partition grid support. Nodes can now be mapped to a multi-lane partition cell identifier, i.e., a cell spanning multiple columns and rows. See class PartitionGrid.
• IncrementalHierarchicLayouter: Improved edge label placement. Edge labels with preferred placement at source/target are placed closer to the corresponding node. Additionally, SimplexNodePlacer offers the option to place adjacent edge labels in a compact, stacked style. See new property labelCompaction.
• polyline.EdgeRouter: Added a fine-granular configuration option to weigh the crossing costs for each label using the data provider look-up key EdgeRouter.LABEL_CROSSING_COST_FACTOR_DP_KEY.
• polyline.EdgeRouter: Added property ignoreInnerNodeLabels that allows to ignore node labels that are inside the bounds of their owner so they may be crossed by edges. This is especially useful if labels of group nodes may be crossed while outer labels of non-group nodes may not.
• polyline.EdgeRouter: Added support for customizing the order in which edges are routed. See new property edgeOrderComparator.
• GenericTreeLayouter: When enabling GenericTreeLayouter.integratedNodeLabeling and/or GenericTreeLayouter.integratedEdgeLabeling, the respective labels will be taken into account during the calculation of group bounds.
• DelegatingNodePlacer: Added key DelegatingNodePlacer.LEFT_RIGHT_DP_KEY that allows choosing on which side a node is placed.
• PartialLayouter: Now supports handling of directed and undirected edges. See data provider key DIRECTED_EDGES_DP_KEY.
• FixNodeLayoutStage: Added additional FixPointPolicys UPPER_RIGHT, LOWER_RIGHT, and LOWER_LEFT.
• LabelLayoutTranslator: Added properties writeBackRelativeEdgeLabelLocation and writeBackRelativeNodeLabelLocation that allow a core layouter to specify new node or edge label locations relative to the label's owner.
• LabelLayoutKeys: Added key IGNORE_LABEL_DP_KEY that allows specifying which edge and node labels should be ignored during layout calculations.
• Added new class OrganicRemoveOverlapsStage that removes node overlaps while respecting a specified minimal node distance. Unlike the approach implemented in class RemoveOverlapsLayoutStage, this approach tries to keep the original layout structure, i.e., it tries to keep the geometric distance between the nodes.
• Added class StraightLineEdgeRouter that routes edges as straight lines considering specified port constraints.

Improvements

• The library module files now support the relative AMD loading mechanism for easier configuration.
• The custom style tutorial has been reworked and custom steps for creating group nodes and folder nodes have been added. Also, bridge support for edges and level-of-detail rendering using HTML5 Canvas are now available in separate tutorial steps.
• ImageNodeStyle now supports fail-over images by default.
• CollapsibleNodeStyleDecorator can now conveniently be customized and more easily be subclassed.
• Improved touch device input for the default collapse button styles and added multi-touch support for the scrollbars.
• DropInputMode: Added property lastDragEventArgs.
• CompositePositionHandler: Added methods getPositionHandler and getHandle to retrieve an earlier added IPositionHandler or IHandle.
• TableLayoutConfigurator: Support for routing algorithms improved.

Algorithms

• Dfs: Added method cancel that can be used by subclasses to cancel the search.
• Cycles: Improved method findCycle to stop the search as soon as the first cycle has been found.
• GraphConnectivity: Improved method makeBiconnected to work with graphs with self-loops (i.e. edges whose source node is also the target node).
• Groups: Replaced recursive implementation of method biconnectedComponentGrouping with an iterative algorithm to support larger graphs.

Layout

• IncrementalHierarchicLayouter: The default sequencing phase has been improved to produce less crossings and run faster.
• IncrementalHierarchicLayouter: Now prevents overlaps among same layer edges attached to group nodes.
• IncrementalHierarchicLayouter: Selfloop routing now takes the layout flow into account. For layout orientation top-to-bottom, selfloops will by default exit on the left or right and enter on top.
• IncrementalHierarchicLayouter: Added option to route selfloops like backloops (starting at the bottom of the node and ending at the top of the node) when backloop routing is enabled.
• IncrementalHierarchicLayouter: During layering, edges connected to group nodes may be redirected and replaced by dummy edges connected to the children of the group node. For these dummy edges ILayoutDataProvider.getEdgeData now returns an IEdgeData of the new type EdgeDataType.REDIRECTED_GROUP_EDGE.
• PCListOptimizer: Improved port candidate assignment calculated by method optimizeAfterSequencing.
• SmartOrganicLayouter: Now uses a more sophisticated approach to remove node overlaps if the scope is set to Scope.ALL and the quality to time ratio is greater than or equal to 0.7 (property qualityTimeRatio).
• InteractiveOrganicLayouter: Method startLayout now takes advantage of multiple threads for layout calculation which may reduce the required runtime.
• BalloonLayouter: Reduced gaps between adjacent nodes.
• PartitionLayouter: Added nested class PartitionLayouter.PolylineInterEdgeRouter that routes inter-edges using class polyline.EdgeRouter.
• PartialLayouter: Now considers port constraints independent of the specified layout orientation. Note that port constraints are only considered if the core layout algorithm supports port constraints as well.
• PartialLayouter.StraightLineEdgeRouter: Added support for port constraints.
• RecursiveGroupLayouter: Added option replacePortConstraints that replaces port constraints by port candidates and, thus, may improve the layout result.
• polyline.EdgeRouter: Improved support for port candidate sets (see class PortCandidateSet).
• polyline.EdgeRouter: Rerouting improved to provide better results.
• polyline.EdgeRouter: Memory usage has been reduced.
• polyline.EdgeRouter: Added penalty setting for edge length. See PenaltySettings.edgeLengthPenalty.
• polyline.EdgeRouter: Added four predefined optimization strategies. See PenaltySettings.OPTIMIZATION_BALANCED, PenaltySettings.OPTIMIZATION_EDGE_BENDS, PenaltySettings.OPTIMIZATION_EDGE_CROSSINGS, and PenaltySettings.OPTIMIZATION_EDGE_LENGTHS.
• polyline.EdgeRouter: Default penalty settings for minimal node to edge distance, minimal group node to edge distance, minimal first and last segment length, and bends in node to edge distance increased. As a result, these restrictions are considered more strongly.
• polyline.EdgeRouter: Now avoids very small octilinear segments.
• polyline.EdgeRouter: Edge grouping improved to keep edge segments grouped longer and to consider the paths of fixed edges when calculating the paths of edges having the same edge group.
• polyline.EdgeRouter: When using polyline routing, short orthogonal edge segments in a monotonic path section are replaced by a single diagonal segment instead of a short diagonal segment followed by an orthogonal segment followed by a second short diagonal segment.
• DirectedOrthogonalLayouter and OrthogonalGroupLayouter: Added optimization step that reduces the number of perceived bends. See new property perceivedBendsOptimization.
• OrthogonalLayouter, OrthogonalGroupLayouter and DirectedOrthogonalLayouter: Added optimization step that aligns degree one nodes (i.e. nodes with one incident edge) that have the same neighbor. See new property alignDegreeOneNodes.
• OrthogonalGroupLayouter: Improved routing and edge labeling for self-loops of normal (non-group) nodes.
• LayoutTool: Added new rectangle arrangement method arrangeRectangleMultiRows suitable for arranging rows of rectangles with highly different sizes.
• ComponentLayouter: Added the following new component arrangement strategies to ComponentArrangementStyles that are suitable for components with highly different sizes: MULTI_ROWS, MULTI_ROWS_COMPACT, MULTI_ROWS_HEIGHT_CONSTRAINED, MULTI_ROWS_HEIGHT_CONSTRAINED_COMPACT, MULTI_ROWS_WIDTH_CONSTRAINED, and MULTI_ROWS_WIDTH_CONSTRAINED_COMPACT

Demos

• Added new showcase application demo.yfiles.graph.bpmneditor which allows you to create Business Process Diagrams and to automatically arrange them. The demo provides customized styles which represent the BPMN 2.0 symbols and a specialized BPMN layout algorithm.
• The new demo demo.yfiles.layout.multipage shows how to use the MultiPageLayouter to divide a large graph into several smaller pages.
• The new demo demo.yfiles.loading.webworker shows how to run a yFiles layout algorithm in a Web Worker task in order to prevent the layout calculation from blocking the UI.
• Added more data binding demos to show the features of the new classes AdjacentNodesGraphSource and AdjacentEdgesGraphSource.
• The new demo demo.yfiles.graph.htmlpopup shows HTML pop-up panels that display additional information about a clicked node or edge.
• The new demo demo.yfiles.input.singleselection shows how to configure GraphEditorInputMode for single selection mode.
• The new demo demo.yfiles.layout.preferredlabelplacement shows how the PreferredPlacementDescriptor for edge labels affects the label placement of layout algorithms.
• The new demo demo.yfiles.style.datatable shows a node style and a label style that display data in a tabular fashion.
• The new demo demo.yfiles.style.selectionstyling shows customized selection painting of nodes, edges and labels by decorating these items with a corresponding style.
• The new demo demo.yfiles.style.styledecorators shows how to create styles for nodes, edges, and labels that wrap existing styles and add visual decorators.

Incompatible Changes

Changes in Default Behavior

• polyline.EdgeRouter: Method doLayout now throws an error if there is a node with zero width or height in the given graph.
• FixedGroupLayoutStage: Method orthogonalEdgeRouter now returns an instance of class polyline.EdgeRouter instead of class OrthogonalEdgeRouter.
• ComponentLayouter: Property preferredLayoutSize now throws an error when setting the preferred size to negative values or zero.
• Changed default behavior of edge label placement in layouters with integrated edge labeling when using LabelPlacements.ANYWHERE. Now edge labels are placed on the edge and in the center between source and target node. This change affects the following layout algorithms: IncrementalHierarchicLayouter, OrthogonalLayouter, OrthogonalGroupLayouter, DirectedOrthogonalLayouter, GenericTreeLayouter, and LabelLayoutDataRefinement.

API Changes

• GraphExtensions and IGraph: the following methods have been renamed:
  • createNodeAtLocation to createNodeWithCenter
  • createNodeAtLocationAndTag to createNodeWithCenterAndTag
  • createNodeAtLocationWithStyle to createNodeWithCenterAndStyle
• GraphOverviewControl: due to the new general support for HTML5 Canvas rendering, the signatures of the method createGraphCanvasVisualCreator and the constructor CanvasOverviewGraphVisualCreator have been changed.
• GraphSource: renamed the property idBinding to nodeIdBinding to be more consistent with the other property names.
• GraphSource: the callback methods createNode and updateNode got a new additional parameter for the label data of the node, like the similar methods for edges always had. Since these methods are classified as protected, this change affects only derived classes but not usages of this class.
• ResourceManager: renamed the constructor ForType to the canonic FromGlobalName and removed other obscure constructors.
• Changed module dependencies and affiliation in the layout part:
  • Moved classes PartitionGrid, PartitionCellId, RowDescriptor, and ColumnDescriptor from the namespace yfiles.hierarchic.incremental to yfiles.layout. Additionally, these classes are now part of the module layout-core instead of layout-hierarchic.
  • Moved class FamilyTreeLayouter from the module layout-hierarchic to the new module layout-familytree.
  • Moved class CompactOrthogonalLayouter from the module layout-orthogonal to new module layout-orthogonal-compact.
  • Moved class ChannelRouter from the module layout-router to the module layout-hierarchic.
  • Moved classes FixedGroupLayoutStage and PartitionLayouter from the module layout-router to the module layout-polyline.
  • Moved rarely used inner class TreeDrawer.HierarchicTreePlacer to the top-level of the yfiles.tree namespace. Consequently, it was moved from the module layout-hierarchic to the module layout-tree.
  • The module layout-hierarchic does no longer depend on the modules layout-router and layout-tree.
  • The module layout-orthogonal does no longer depend on the module layout-router.

  Adjust your require calls and/or script elements accordingly, if you're using any of these classes or if you relied on the removed dependencies, for example if you required only layout-hierarchic to get both the hierarchic and the tree layout algorithms.

• IItemFactory: Added method createRedirectedGroupEdge.
• LayeredNodePlacer: Removed data provider key DP_KEY_DISTANCE_TO_PARENT_MAP from public API, since it is for internal use only.
• DelegatingNodePlacer: the methods getLowerRightChildren and getUpperLeftChildren have now an additional second argument, the current graph.
• polyline.EdgeRouter: Method doLayout now throws an error if there is a node with zero width or height in the given graph.
• polyline.EdgeRouter: Penalty settings have been changed to double precision. See class PenaltySettings.
• polyline.EdgeRouter: renamed the properties polylineRoutingEnabled and reroutingEnabled to the canonical names polylineRouting and rerouting, respectively.
• PathSearch: Signature of method calculateCosts has changed. It now takes an additional double array as parameter that is populated with the calculated costs instead of returning a new array.
• DrawingEmbedder: Removed public method preprocessNodes and protected method printStatistics.
• RecursiveGroupLayouter.NULL_LAYOUTER_FIELD0 has been renamed to RecursiveGroupLayouter.NULL_LAYOUTER.
• Removed SimpleLabelStyleRenderer's static methods getTextOffset, measureText, and getTextBBox. Please use TextRenderSupport.measureText or TextRenderSupport's instance methods for text measuring instead.

Bugfixes

• GraphSource: fixed various problems in method updateGraph that caused undesired behavior or even errors.
• Property Touch2DDevice.lastEventTime is now a regular JavaScript Date object.
• BevelNodeStyle: Fixed update of drop shadow after radius has been changed.
• When using an IEditLabelHelper and adding a label interactively, the helper's editLabel callback was called instead of addLabel.
• Reparenting an empty group node displayed the target node highlight around the reparented node.
• SmartOrganicLayouter: Fixed bug that caused weird placement of fixed elements if the minimal node distance is set to 0.
• MultiPageLayouter: Fixed possible error if the input graph contains empty group nodes.
• MultiPageLayouter: Fixed possible error.
• IncrementalHierarchicLayouter: Fixed broken edge routes that may occur for edges with labels if there are "critical" edges.
• SimplexNodePlacer: Fixed broken edge routes that may occur for edges with labels if option edgeStraighteningOptimization is enabled.
• PCListOptimizer: Fixed possible IndexOutOfRangeException that may appear if there are port constraints which have no matching port candidate or port candidate set entry.
• IncrementalHierarchicLayouter: Fixed an error (Graph is not acyclic) in SimplexNodePlacer that could appear when sequence constraints were added to a graph with swimlanes and group nodes.
• BorderLine: Fixed a rare error that was caused by numerical instability.
• IncrementalHierarchicLayouter: Fixed an error in ConstraintIncrementalLayerer that could appear when layer constraints were added in incremental mode.
• CircularLayouter: Fixed a possible error when layout style is set to BCC_ISOLATED and consider node labels is enabled.
• AbstractLabelingAlgorithm: Fixed bug that causes poor results if option removeEdgeOverlaps is enabled and the labels should be placed on the edge.
• IncrementalHierarchicLayouter: Fixed minimum edge length for orthogonal edges. It is now also taken into consideration for edges that connect to a node's side and for backloop edges (see property backloopRouting).
• IncrementalHierarchicLayouter: Fixed possible error if PortConstraints are used together with PortCandidateSets.
• polyline.EdgeRouter: Minimum first and last segment length and minimum node to edge distance were sometimes ignored when used together with octilinear routing style.
• Grouping: Fixed bug in method nearestCommonAncestor that sometimes caused wrong results if one of the specified nodes is the ancestor of the other node.
• InsetsGroupBoundsCalculator: Fixed method calculateBounds to consider only the given child nodes and all edges between those child nodes instead of all nodes and all edges in the graph.
• GenericTreeLayouter: Fixed error that occurred when using LayeredNodePlacer as default node placer.
• LayoutTool: Fixed calculation of lower width bound in method arrangeRectangleRows. Due to the better bound, the optimization procedure now needs less steps, especially for graphs with very wide components. Note, that the results may also slightly differ, because the optimization may now stop with slightly different values.
• SALabeling and GreedyMISLabeling: Fixed possible error caused by labels with zero width/height and a "free" edge label model.
• IncrementalHierarchicLayouter: Fixed bug that caused wrong coordinates of empty rows (see class RowDescriptor) whose minimum height is zero.
• DirectedOrthogonalLayouter: Fixed a bug that sometimes caused misplaced edge labels of grouped edges.
• polyline.EdgeRouter: Fixed possible error for edge groups that contain fixed edges.
• polyline.EdgeRouter: Fixed bug that caused wrong routes for edges grouped with fixed edges.

yFiles for HTML 1.1.1.6 - Changes Since 1.1.1.5

Bugfixes

• Various corrections for touch input in Internet Explorer 11
• Under certain rare conditions, the clone method did not copy all field values from the original instance to the newly created instance.
• BevelNodeStyle did not update the fill attribute correctly.
• Obfuscator: Blacklist localName to prevent thee removing of drop shadows in Firefox and Internet Explorer.
• Folding: Source port tags in view states were not parsed correctly from GraphML.
• BevelNodeStyle: Fixed update of drop shadow after radius has been changed.
• FilteredGraphWrapper.dispose did not clean up all event listeners.
• Node ports could not be moved by dragging their IHandle.
• CreateEdgeInputMode: Mixing touch and mouse gestures did not always work as expected.
• List.fromArray did not check its input for null.
• Graph Viewer Demo: load the graph-style-defaults module before loading a GraphML file that uses styles defined in it.
• ImageExportDemo: The hit test for the export rectangle was configured incorrectly.

Automatic Layout

• IncrementalHierarchicLayouter: Fixed error that may appear for graphs containing nodes with fixed coordinates.
• LabelLayoutDataRefinement: Fixed possible error for unbuffered layout runs.
• RecursiveGroupLayouter: Removed all temporarily inserted port candidates before calling the inter-edge routing because otherwise the edges routes may become corrupted.
• TreeLayouter and GenericTreeLayouter: Fixed possible error for trees with empty group nodes.
• ShuffleLayouter: Fixed bug that may cause small offsets of fixed nodes.
• Polyline.EdgeRouter: Fixed bug in calculation of edge to edge distance penalties which could reduce the space where edges can be routed causing them to take unnecessary long routes.
• Polyline.EdgeRouter: Fixed bug that caused edges that connect a node with an ancestor group node to violate the minimal node to edge distance for the target node.
• Polyline.EdgeRouter: Fixed bug that caused edges that connect a node with an ancestor group node to have unnecessary long and bended edge paths when using port constraints.
• Polyline.EdgeRouter: Fixed bug that caused edges that connect a node with an ancestor group node to cross their source nodes when using port constraints.
• Polyline.EdgeRouter: Fixed bug that makes it possible to group the source of one edge and the target of another edge at their common node.
• Polyline.EdgeRouter: Fixed bug that sometimes causes superfluous edge overlaps.
• Polyline.EdgeRouter: Fixed bug that caused minimum distance violation of grouped edges.
• Polyline.EdgeRouter: Fixed rare NullReferenceException while calculating edge crossing costs.
• Polyline.EdgeRouter: Fixed bug that sometimes assumed wrong label bounds for labels of table nodes. This could result in too many bends for edges that were routed around those wrong boxes. Labels of table nodes are now ignored by the router if TableLayoutConfigurator is used to prepare the graph for layout calculations.
• Polyline.EdgeRouter: Fixed bug that sometimes assumed wrong label bounds if the router was used directly after another layout algorithm. This could result in too many bends for edges that were routed around those wrong boxes and/or edges crossing labels because the actual label boxes were ignored.
• PolylineLayoutStage: Fixed possible error if there are fixed edges with a single, very short segment.
• BusRouter: Fixed clean up of bends that resulted in unnecessary detours in edge paths.
• BusRouter: Fixed possible error.
• BusRouter: Fixed possible error caused by non-orthogonal edge segments.
• BusRouter: Fixed possible error when routing only a subset of edges without adding a DataProvider to the graph that marks edges as selected.
• IncrementalHierarchicLayouter: Fixed bug that could result in infinite y-coordinates when octilinear edge routing was enabled.
• Polyline.EdgeRouter: Fixed bug that may cause an error if a grid is specified (see option Grid).
• OrthogonalGroupLayouter: Fixed bug that may cause wrong group bounds calculation if a group node label lies outside of the group node.
• PartialLayouter: Fixed possible error if the algorithm is applied to a graph with partition grid (see PartitionGrid).

yFiles for HTML 1.1.1.5 - Changes Since 1.1.1.4

Bugfixes

• Fixed touch events for Internet Explorer 11.
• SimpleLabelStyle.WithFontSizeAndBrush: The font size parameter was ignored.
• SimpleLabelStyle: Setting the backgroundBrush back to null had no effect.
• Invisible CanvasObjectGroups did not work.

yFiles for HTML 1.1.1.4 - Changes Since 1.1.1.3

Improvement

• LayoutGraphAdapter provides now the original Tag data for temporary graph objects.

Bugfixes

• The yfiles/lang core module was not able to deal with the minified output of the obfuscator anymore (since 1.1.1.2). This resulted in nested types not being available after minification.
• Undoing a reparent grouping gesture might have resulted in inconsistent group node sizes. Note: The fix results in a slightly incompatible behavior when nodes are reparented programmatically and multiple folding views are used. In that case, you need now to subscribe to hierarchy events and manually adjust the group node bounds.
• The default value of AbstractTableNodeStyle#BackgroundStyle was not serializable.
• Manually bracketing undo edits with BeginEdit and EndEdit might have led to exceptions when folding was active.
• Changing properties of PolylineEdgeStyle.pen had no visible effect.

Automatic Layout

• DirectedOrthogonalLayouter could throw a indexOf exception.
• IncrementalHierarchicLayouter: Fixed a rare bug that caused broken edge routes if edges are routed polyline.
• IncrementalHierarchicLayouter: Fixed a bug that sometimes placed elements at an infinite y-coordinate if octilinear edge routing was enabled.

yFiles for HTML 1.1.1.3 - Changes Since 1.1.1.2

Bugfixes

• Added a workaround for a memory leak error in Google Chrome (some DOM nodes are never cleaned up). Since this workaround comes with a slight performance penalty, it is not enabled by default. To enable it, set the property yfiles.workaroundCR320635 to true.
• Improved the rendering performance of graph item handles in Internet Explorer.
• Fixed an error that was thrown when uninstalling a GraphEditorInputMode after a label editing text box was shown.
• TextEditorInputMode#anchor wasn't considered for placing the label editing text box.
• RotatedSliderEdgeLabelModel can now deal with edge paths that are null, for example when using VoidEdgeStyle.
• GraphML: Primitive types like floats and doubles could not be read when used in element syntax and the current CultureInfo was not Invariant.

yFiles for HTML 1.1.1.2 - Changes Since 1.1.1.1

Improvements

• Included a workaround for an unresolved error in Internet Explorer 11 on Windows 7. Under certain circumstances, IE stops to respond to mouse events and seems to be crashed. Other versions of Windows and IE, especially IE 11 on Windows 8 and 8.1, are not affected.

Demos

• Various improvements and bug fixes for Printing and the Printing Demo:
  • Printing is now more robust in all major browsers.
  • Added support for printing of template styles.
  • Moved printing into a stand-alone class that is easy to use in custom applications.
• Organizational Chart Demo: added support for printing.

Bugfixes

• For customer implementations of nested types, both isInstance and instanceof considered the custom implementation as not being of the nested type. Amongst other things, this resulted in wrong type checking errors when using such implementations.
• Final obfuscation using the obfuscator broke touch input.
• Fixed the arrow ArrowType.TRIANGLE which accidentally was the same as ArrowType.DEFAULT.
• Fixed clipping problem in SvgExport that affected printing and bitmap export.
• Fixed clicking in the overview not honoring viewport limits.
• GraphML: Properties with a text value containing nested CDATA sections were not parsed correctly.
• Moving the viewport by clicking into the GraphOverviewControl did not honor CanvasControl.viewportLimiter restrictions.
• Fixed error when invoking event handlers added with KeyboardInputMode.addHandlerForGesture.
• Key event handlers are removed from a Control when it loses focus.
• PatternBrush now respects the value set in the viewBox property.

Automatic Layout

• EdgeRouter: Fixed bug that may cause an Error if a grid is specified (see property grid).
• OrthogonalGroupLayouter: Fixed bug that may cause a wrong group bounds calculation if a group node label lies outside of the group node.
• PartialLayouter: Fixed possible Error if the partial layouter is applied to a graph with partition grid (see PartitionGrid).
• PartialLayouter: Fixed bug that may cause a very long runtime if the algorithm considers node alignment (see property considerNodeAlignment).
• IncrementalHierarchicLayouter: Fixed bug that may cause broken edge routes for edges with port candidates if backloop routing is enabled (see property backloopRouting).
• ParallelEdgeLayouter: Fixed Error that appears if the leading edge has zero length.
• ParallelEdgeLayouter: Fixed bug that may cause points with Double.NaN-coordinates for some edges.
• LayoutTool: Fixed bug in method routeEdgesParallel: that may cause points with Number.NaN-coordinates for some edges.
• EdgeRouter: Fixed performance problems for graphs with overlapping fixed edges.

yFiles for HTML 1.1.1.1 - Changes Since 1.1.1

Bugfixes

• Some properties of type ICollection were not serialized in GraphML. Especially, ITable instances were not serialized correctly.
• Interactively deleting the last stripe in a table caused an exception.
• Cloning table stripes did not work correctly.
• Restored previous default behavior of edge highlight and focus visualizations.

Demos

• Custom Style Tutorial: Method MySimpleLabelStyle#getPreferredSize threw an exception when creating a new label.
• Custom Style Tutorial and SimpleCustomStyle demo: Reverted field to properties to allow for GraphML serialization.

yFiles for HTML 1.1.1 - Changes Since 1.1.0.1

Enhanced Development Support

• New methods yfiles.help.info and yfiles.help.api display extensive information about types, properties and other members, and API documentation when used in the browser's JavaScript console.
• The debug support provided by yfiles-typeinfo.js has a new setting to switch between instant failure and logging of problems. To enable logging, set the boolean property yfiles.help.logTypeInfoErrors to true.

Improvements

• Improved performance of several of the extension methods of IList.
• BevelNodeStyle: Improved performance when drop shadows are used (IE only).
• GraphOverviewControl: Added new factory method createGraphCanvasVisualCreator that allows for easier creation of a canvas based preview rendering.
• Added callback method setEdgePortLocation to LayoutGraphAdapter that is called while assigning a new location to a port that is owned by an edge.
• Improved performance of table rendering and interaction.
• Added explicit extension method IGraph.createNodeAtLocationWithStyle(PointD,INodeStyle).
• Arrow: Setting the various properties now only recreates the arrow template if something actually changed.
• Method SvgExport.setup: The returned IRenderContext new has the correct clip applied.
• Typeface: Added default value annotations to most properties for more compact GraphML serialization.

Automatic Layout

• RecursiveGroupLayouter: Improved performance for graphs with a mainly flat structure.
• GraphConnectivity: Improved method makeBiconnected to work with graphs with self-loops (self-loops are edges whose source and target are the same).
• Groups: Replaced recursive implementation of method biconnectedComponentGrouping with an iterative algorithm to support larger graphs.
• Trees: Added method isForestWithDirection.

Demos

• Added new demo demo.yfiles.graph.bridges, which shows how to set up and configure automatic edge bridges.
• Added new demo demo.yfiles.graph.clipboard, that shows how to customize clipboard operations.
• Revised and improved Custom Styles tutorial best practices.

Incompatible API Changes

Automatic Layout

• Class yfiles.algorithms.AlgorithmAbortedException has been removed. This exception was never thrown by library code and was not intended to be used by client code.

Bugfixes

• In some browsers, event coordinates were not passed correctly when the page was scrolled or when the canvas had a CSS border.
• PatternBrush couldn't be used in documents with more than one graph control.
• Pen: The dash style wasn't visualized correctly, and the properties dashCap, lineJoin, and miterLimit had no effect. Consequently, visualizations of lines that use one of these properties might look different.
• Prevent the creation of SVG path elements with empty path data attribute.
• NodeStylePortStyleAdapter: Ports were drawn near the origin of the view instead of the real node location.
• Debug support: Replaced all occurrences of java.lang.Class by the correct yfiles.lang.Class.
• LabelControlLabelStyle incorrectly triggered update of preferred label size calculation in folded graph scenarios under certain conditions.
• Method NavigationInputMode.toggleGroupNodeState did not expand collapsed folder nodes.
• NavigationInputMode: Methods collapseSelection and expandSelection threw an exception.
• Fixed touch events when starting a gesture on an SVG element that is removed from the DOM during the gesture, e.g. when starting a drag on a node and moving the node out of the visible screen area.
• Method SimpleAbstractLabelStyle.isInBox always returned false.
• NodeStyleLabelStyleAdapter: Fixed rendering bug when the style was used for node labels.
• In CreateEdgeInputMode and MoveInputMode, snapping may not have been re-enabled after disabling it temporarily.
• IconLabelStyle: Fixed exception when the icon size was not set or was empty.
• Method GraphClipboard.cut: The filter predicate was evaluated twice, resulting in unexpected behavior if the predicate evaluation depended on state that could change by removing graph elements.
• CanvasControl: horizontalScrollBarPolicy and verticalScrollBarPolicy could not be set to different values at the same time. Instead, the value of the latter was always used for both settings.
• LabelControlLabelStyle incorrectly triggered update of preferred label size calculation in folded graph scenarios under certain conditions.
• MoveInputMode only considers hovers without modifiers as valid to prevent "cursor fight" with MoveViewportInputMode.
• CanvasControl: Fixed incorrect clipping that could occur when scrollbar visibility has changed.
• Fixed DefsManager to respect the value of the cleanupTimerInterval property.
• Fixed accidental removal of SVG elements in a defs section, e.g. <filter>, that were only referenced in a <g> element. This also fixes ShadowNodeStyleDecorator.

Automatic Layout

• PreferredPlacementDescriptor: Corrected the type of the property angleRotationOnRightSide from LabelAngleOnRightSideOffset to LabelAngleOnRightSideRotation.
• IncrementalHierarchicLayouter: Fixed bug that caused unsuitable edge routes for grouped edges within group nodes.
• IncrementalHierarchicLayouter: Fixed bug that causes a violation of strong port constraints of type ANY for backloop edges.
• RecursiveGroupLayouter: Fixed possible exception if there are edges that start or end at group nodes.
• OrthogonalLayouter: Fixed possible exception for graphs with nodes of high degree.
• DrawingEmbedder: Fixed possible exception.
• GroupNodeRouterStage: Fixed possible exception that is caused by the missing removal of a temporarily added DataProvider.
• EdgeRouter: Fixed exception that occurs sometimes when sphere of action is not set to ROUTE_ALL_EDGES.
• EdgeRouter: Fixed endless loop which may occur in rare cases.
• OrthogonalEdgeRouter: Fixed possible exception when both options rerouting and localCrossingMinimization are enabled.
• ParallelEdgeLayouter: Fixed possible exception when the source or target points of parallel edges are outside of the corresponding node.
• BusRouter: Fixed bug that may cause a broken bus structure.
• BusRouter: Fixed possible stack overflow.
• Method Rectangle2D.intersectsRectangle sometimes returned true for non-intersecting rectangles. This could cause infinite loops in BusRouter.

yFiles for HTML 1.1.0.1 - Changes Since 1.1

Bugfixes

• GraphML: Reading properties of custom types with no attached meta-data or of declared type yfiles.lang.Object resulted in: "DeserializationNotSupportedException: Element {x} has collection content for non-collection property {y}."
• SimpleLabelStyle's verticalTextAlignment did not work correctly in all cases.
• SimpleLabelStyle's clipText feature sometimes resulted in wrong clips being applied when the style was shared between labels.
• GraphML: Freezable objects like Pen actually got their isFrozen property serialized, which can result in run-time exceptions during parse time for frozen elements. The property is not written anymore and is ignored in old GraphML files for the built-in types.
• Edge to edge connections where not parsed correctly when deserialized from GraphML.
• yfiles.lang.Object.$class's isAssignableFrom and isSubclassOf did not work correctly for trait/interface types.
• The type-checking debug helper did not accept functions as values for the various Binding properties at GraphSource and TreeSource and threw an error which made parts of the InteractiveGraphSourceDemo crash when debugging was enabled.
• Setting the DefsManager's cleanupInterval property had no effect once the manager was in use.
• The optional PortDefaultsPortCandidateProvider class did not work correctly and resulted in exceptions being thrown when reconnecting edges.
• Trying to read empty label texts (with an empty XML element) from GraphML resulted in an exception.
• Matrix2D.invert() did not always work correctly for rotation and skew transformations.
• Fixed an "<obfuscated> has no method 'isPositiveInfinity'" exception when RotatedSliderEdgeLabelModel was used with autoRotationEnabled set to true.
• Tooltips that would extend beyond the visible document were not always positioned correctly.

yFiles for HTML 1.1 - Changes Since 1.0.1

Major Features Added

• New support for edge-to-edge connections in user interactions. Edges can be connected to other edges during edge creation as well as by reconnecting edge ends.
  [To the corresponding section in the yFiles for HTML Developer's Guide...]
• New class yfiles.canvas.SvgExport adds support for exporting the CanvasControl's content to SVG.
• A great number of additional status-indicating events has been added to the various default input modes in order to provide fine-grained callbacks to customization code.
• New pluggable development support to provide runtime type information and convenient debugging support in the browser.
• Major improvements to the overall rendering performance. Up to 200% gain when interacting with diagrams in Internet Explorer.
  Also, significant improvements of execution speeds of the automatic layout algorithms.
• The library no longer contains Apache licensed third party code.

Automatic Layout

• Class yfiles.router.polyline.EdgeRouter is a new edge routing algorithm that produces polyline edge routes. The segments of an edge are either orthogonal (i.e., the slope of each segment is a multiple of 90 degrees) or octilinear (i.e., the slope of each segment is a multiple of 45 degrees).
  [To the corresponding section in the yFiles for HTML Developer's Guide...]
• yfiles.router.polyline.PolylineLayoutStage: A layout stage that adds polyline segments to the orthogonal edge paths of a graph.
• yfiles.hierarchic.IncrementalHierarchicLayouter: Added support for octilinear edge routing, i.e., a routing style where the slope of each edge segment is a multiple of 45 degrees. Different edge routing styles can be specified using class yfiles.hierarchic.incremental.RoutingStyle.
• yfiles.layout.PreferredPlacementDescriptor: A new descriptor that allows to specify advanced preferred placement information for edge labels.
  [To the corresponding section in the yFiles for HTML Developer's Guide...]

Minor Features Added

• yfiles.graph.DefaultEdgeIntersectionCalculator now supports cropping edges directly at the port instead of at the node's geometry. This can be used to easily have edges end at the port instead of at the geometry of the node. See the new properties cropAtPort, extraCropLength, and callback method getPortGeometry.

Automatic Layout

• yfiles.tree.BalloonLayouter: New option to take into account the bounds of node labels when calculating a layout.
• yfiles.layout.LabelLayoutTranslator added option autoFlipping to specify whether or not edge labels should be automatically flipped if they would be upside-down.
• yfiles.labeling.AbstractLabelingAlgorithm added option autoFlipping to specify whether or not edge labels associated with a "free" label model should be automatically flipped if they would be upside-down.

Improvements

Automatic Layout

• yfiles.layout.GraphLayoutLineWrapper: Improved edge routing for overlapping edges (e.g., grouped edges).
• yfiles.orthogonal.OrthogonalGroupLayouter supports labels at edges incident to group nodes.
• yfiles.hierarchic.IncrementalHierarchicLayouter now treats edge groups at empty group nodes like those on normal nodes instead of ignoring them like it is done for non-empty group nodes.
• yfiles.tree.GenericTreeLayouter creates more compact layouts, especially for trees with edge labels.
• yfiles.partial.PartialLayouter: Now considers edge ports when calculating the barycenter of a component (if positioningStrategy is set to SubgraphPositioningStrategy.BARYCENTER).
• Added auto-flipping to yfiles.layout.RotatedDiscreteEdgeLabelLayoutModel and yfiles.layout.RotatedSliderEdgeLabelLayoutModel. Labels that are placed upside down by a layouter will be flipped.
• yfiles.organic.SmartOrganicLayouter: Now, fixed nodes are not moved by a fixed offset if scope is set to Scope.SUBSET.
• yfiles.hierarchic.WeightedLayerer: Improved quality (i.e., reduced the number of reversed edges) if weightedCycleRemoval is enabled.
• Added the ability to yfiles.tree.DefaultNodePlacer to produce polyline style edge routings with sloped edge segments.
• Added the ability to yfiles.tree.DefaultPortAssignment to distribute edges at the border of the nodes.
• Improved the performance of yfiles.layout.PortCandidate which potentially improves the performance of the yfiles.hierarchic.IncrementalHierarchicLayouter with rotated graphs with PortCandidates.
• Optimized number of generated yfiles.layout.PortCandidates in yfiles.layout.RecursiveGroupLayouter for the core layouter.

Demos

• Added context menu to demo.yfiles.toolkits.jquery.simple.
• Added new demo demo.yfiles.printing that shows how to print a CanvasControl's content using yfiles.canvas.SvgExport.

Bugfixes

• yfiles.drawing.IconLabelStyle has been fixed.

Automatic Layout

• yfiles.hierarchic.IncrementalHierarchicLayouter: Fixed incorrect handling of port candidates in layouts where rotation and a mirror was set.
• yfiles.layout.RotatedSliderEdgeLabelLayoutModel and yfiles.layout.SliderEdgeLabelLayoutModel: Improved label placement at zero-length edge segments.
• Fixed bug that caused ArrayIndexOutOfBoundsException in yfiles.hierarchic.incremental.AspectRatioComponentLayerer.
• Fixed integer overflow when group compaction is activated in yfiles.hierarchic.IncrementalHierarchicLayouter while layouting extremely large, deeply nested graphs.
• Fixed bad edge routings in yfiles.genealogy.FamilyTreeLayouter when there are several marriages between generations.
• yfiles.layout.IsolatedGroupComponentLayouter now considers labels in group bounds calculation if label awareness is enabled.
• yfiles.hierarchic.IncrementalHierarchicLayouter: Fixed port handling of edges with a single edge port candidate that is contained in a set of node port candidates.
• yfiles.orthogonal.OrthogonalLayouter and yfiles.orthogonal.DirectedOrthogonalLayouter: Fixed bug that caused IllegalArgumentException if input graph contains overlapping parallel edges and from sketch mode is enabled (see property useSketchDrawing).

Changes in Default Behavior

• yfiles.drawing.ImageNodeStyle now stretches images to fit the node's bounding box. To restore the old behavior, subclass yfiles.drawing.ImageNodeStyleRenderer and override method getPreserveAspectRatio with an implementation that returns true.
• Since with this release yfiles.graph.LayoutGraphAdapter translates yfiles.model.IMapper instances in the graph's mapper registry as yfiles.algorithms.IDataMap implementations that enable data write-back scenarios, the code that deals with IncrementalHierarchicLayouter.LAYER_VALUE_HOLDER_DP_KEY now behaves differently. In older releases the yfiles.algorithms.IIntValueHolder interface was queried from the mapper to write back the layer data. Now the data is written directly into the mapper and the IIntValueHolder implementation is ignored. See demo.yfiles.layout.IncrementalHierarchicLayouter for an example on how to use the respective key.

Automatic Layout

• yfiles.partial.PartialLayouter: Property edgeRoutingStrategy now disables a previously set customized edge router.

Incompatible API Changes

• The interfaces IComparable and IObjectComparable have been moved from namespace yfiles.system to yfiles.lang.
• Method doStartMoveTouch in yfiles.input.MoveInputMode has been renamed to doStartDrag. The old method is available through the compatibility layer.
• Methods GraphMLIOHandler.readFromURI and GraphMLParser.parseFromURI have been renamed to readFromURL and parseFromURL, respectively. The old methods are available through the compatibility layer.
• The deprecated extension methods in yfiles.model.MapperExtensions have been removed.
• The deprecated convenience methods LookupExtensions#get and LookupExtensions#getWithContext have been moved to the compatibility layer.
• Methods getTargetPortCandidateProvider and getSourcePortCandidateProvider in yfiles.input.GraphEditorInputMode changed their signatures to accept yfiles.graph.IPortOwner instances instead of yfiles.graph.INode instances. This is in conjunction with support for edge-to-edge connections. Overriding methods need to be adjusted accordingly.
• Method showHitNodeCandidatesOnly in class yfiles.input.PortRelocationHandle has been renamed to showHitPortOwnerCandidatesOnly to support edge-to-edge connections. Also the behavior of this class has been changed to allow edge-to-edge connections if this feature has been enabled by providing port candidates at the edges. Should you wish to disallow edge-to-edge connection even though you are providing edge port candidates, the new edgeToEdgeConnectionsAllowed property can be set to false.
• Previously it was possible to cast DefaultEdgeIntersectionCalculator.INSTANCE to the containing type. The singleton is not of the given type anymore. If you require an instance of that type, consider instantiating one instead.

Automatic Layout

• yfiles.layout.IEdgeLabelLayout: Removed property preferredPlacement and added property preferredPlacementDescriptor.
• yfiles.partial.PartialLayouter: Replaced method configureOrthogonalEdgeRouter by method configureEdgeRouter.

yFiles for HTML 1.0.1 - Changes Since 1.0

Minor Improvements

• The 'Getting Started' steps in the Developer's Guide have been revised and improved.
• The Developers' Guide's code snippets and IDE configuration examples have been updated and improved. A guide on how to configure WebStorm has been added.
• Two convenience constructors have been added to GraphOverviewControl that have the same signature as the ones used in the GraphControl: GraphOverviewControl.ForDiv(HTMLDivElement) and GraphOverviewControl.ForId(String).
• The Getting Started Tutorial Step 1 has been simplified to not make use of the demo framework.
• A convenience constructor has been added to ImageNodeStyle. ImageNodeStyle.WithPath(String) takes the image source string as an argument for the creation of the style.
• IEnumerable got new extension methods forEach and forEachWithIndex that make it easy to iterate over all enumerable implementations in the library.
• Enumerations where not properly documented in the IDE-support yfiles-api.js file.
• The GWT demo has been improved and revised to show client-server interaction with GWT.
• The Dojo demo has been improved to show how to use the Dojo context menu implementation with yFiles.
• Added AddRegistryOutputMapper overload that takes a serialization handler.
• The clean-up timer handling of type CanvasControl and its subclasses has been improved to use less CPU and to prevent memory-leaks.
• A workaround for an Safari Javascript bug (on iOS and MacOS) has been added that should prevent Safari from corrupting the state of the Javascript objects during iteration.
• The HTML Api Documentation did not always include inherited members.
• The HTML Api Documentation missed the module name prefix 'yfiles/'.

Bugfixes

• CircularLayouter yielded bad results due to a bug in Groups.biconnectedComponentGrouping.
• Tooltips sometimes caused additional scrollbars to appear in the browser and were not cleaned up correctly after uninstallation.
• ImageNodeStyle's outlineShape property was non-functional. Documentation has been updated and the feature can now be used as documented.
• The .css file for the library has been moved to the lib/yfiles.css file. The demo-framework css file has been renamed to demo-framework.css to be less ambiguous.
• The gesture for moving the viewport with the mouse (holding ctrl-key while dragging the mouse) did not work in the default configuration of GraphEditorInputMode.
• The serialization of ImageNodeStyle to GraphML was broken and could not be parsed in again.
• The serialization of primitive types (Strings, Numbers, Arrays) in GraphML was broken and incompatible with the yFiles editions for .net, WPF, and Silverlight
• The 'File Operations Demo' ceased to work after obfuscation with the standard settings. An exclusion has been added to the obfuscator configuration.
• The 'File Operations Demo' displayed an error dialog when loaded in chrome under same origin restrictions, such as from the file system. This has been improved to show only a warning.
• The Image Export Demo now loads the third party demo code from a cache at our website, avoiding a problem with git-hub's mime-type handling in Internet Explorer and the risk of external changes breaking the demos.
• The Image Export Demo had a workaround for an issue in Chrome that has been fixed in the meantime. The fix broke the workaround, though. The code for the workaround has been improved to work in both cases, now.
• Expanding and collapsing a folder node programmatically does not require the yfiles/graph-input module anymore.
• The illegal argument exceptions now correctly carry the parameter of the illegal parameter that caused the exception.
• Several race-conditions during the AMD loading in some of the demos have been removed.
• Some constructors in the sample files called their base constructors twice.
• ShadowNodeStyleDecorator was not displaying a shadow. This has been fixed to use SVG filter effects. We recommend using the built-in drop shadow visualizations, however, since at least for larger visualizations the filter effects do not work very well.
• BendAnchoredPortLocationModel could throw an IndexOutOfRangeException under certain circumstances.
• Setting GraphOverviewControl.graphPaintable had no effect.
• CanvasOverviewGraphVisualCreator did not reset the stroke for drawing edges and therefore always used the last stroke that was set used on the canvas.
• Deleting graph elements during interactive edge creation could throw an exception.
• Group node visualizations were not always removed correctly when the group node was deleted.
• Some of the special label model implementations where missing reflection meta-data and could not be serialized to GraphML.
• RotatedSliderEdgeLabelModel crashed with an undefined method error.
• DefaultSelectionModel was not always cleaned up correctly when the domain was changed.
• SliderEdgeLabelModel threw an exception for paths with zero length segments.
• FilteredGraphWrapper: The adjacency state of the filtered instance was wrong under certain conditions.
• FreeEdgeLabelModel: Fixed bad positions returned by parameter finder.
• Accidental debug console output during dragging of labels was removed.

Incompatible Changes

• Obsolete duplicate class MemoryImageNodeStyle has been removed from the package. Use ImageNodeStyle instead.
• The type of ImageNodeStyle's outlineShape property (and also TemplateNodeStyle, TemplateLabelStyle, and TemplatePortStyle) has been changed to accept GeneralPath instances. The previous implementation was unusable and had no effect.

yFiles for HTML 1.0

Major New Features

• yFiles for HTML 1.0 is the initial release of yFiles for HTML.