2.2.1

If you are upgrading from 2.1 to 2.2, be sure to get a new license key. You must do this on every major.minor change, such as going from 2.1 to 2.2 or 2.3. You do not need a new key for point (2.2.x) releases.

Changes for 2.2.1

• Added rounded corners to the BalloonLink extension, controlled by the new property BalloonLink.corner. Improved BalloonLink's implementation of BalloonLink.base.
• Fixed licensing issues when using Windows high contrast mode, due to changes in Chrome and Edge.
• Added init optional argument to Layer and Animation constructors. Animation.start and Animation.stop now return this.

See the full 2.2 changelog here.

2.2.0

GoJS 2.2

GoJS 2.2 introduces a number of properties and methods for convenience and to improve customization. GoJS 2.2 also includes new methods for constructing objects, and enhances TypeScript typings support.

GoJS 2.2 also includes several performance enhancements when drawing large graphs, reduced memory usage, and more efficient replacing or merging of item Arrays.

Some of the samples and written documentation have been upgraded to use more modern JavaScript: classes, arrow functions, const and let, so the samples and documentation might no longer be viewable using old browsers such as Internet Explorer 11 or some old Android browsers. The library and the extensions continue to target ES5 (ES2012), so that apps using the library can still work on IE11.

Method Chaining and New Ways to Build Objects

In GoJS 2.2 many methods that previously returned void now return the method's instance, to promote method chaining. GoJS 2.2 also introduces several new methods or arguments to allow type-checking of settings by compilers and in text editors.

Several existing methods now return their instance:

• GraphObject.setProperties and Diagram.setProperties - and their new synonyms GraphObject.attach and Diagram.attach
• Panel.add
• GraphObject.bind, which also has new functionality via method overloads.
• GraphObject.trigger - to add AnimationTriggers to a GraphObject
• Diagram.addEventListener, Diagram.addChangedListener, Diagram.addModelChangedListener, Model.addChangedListener
• Diagram.addLayer, Diagram.addLayerBefore, Diagram.addLayerAfter
• Animation.add, and Animation.addTemporaryPart

GraphObject constructors now accept one or two optional arguments. The first is the value for a common property, and the second is a JavaScript Object detailing properties to initialize. For example, one can now write:

• new go.TextBlock("Some Text", { margin: 5 })
• new go.Picture("sourceURI.png", { width: 30, height: 30 })
• new go.Shape("RoundedRectangle", { fill: "blue", stroke: "yellow" })
• new go.Panel("Auto", { padding: 10, background: "green" })

This means that one can now write code like:

// Create a Node and add a Shape and a TextBlock to it:
myDiagram.nodeTemplate =
  new go.Node("Vertical")
    .add(new go.Shape({ width: 40, height: 40, fill: "white" })  // default width & height & fill
          .bind("width") // binds data.width to Shape.width
          .bind("height")
          .bind("fill", "color") // binds data.color to Shape.fill
          .bind("figure", "fig")) // data.fig should be the registered name of a geometry figure generator
    .add(new go.TextBlock("(no name)",  // default string to display
                          { isMultiline: false, editable: true })
          .bind("text", "name", null, null));  // TwoWay Binding of TextBlock.text with data.name without converters

New methods GraphObject.set and Diagram.set return their instance. When using TypeScript definitions, the compiler checks these calls for GraphObject and Diagram property existence and value types.

New method GraphObject.apply can be used to define common functions that provide settings and bindings. Such customizations can then be applied to a GraphObject that you are initializing by calling GraphObject.apply with that function.

Together, these changes remove the need to use GraphObject.make when concisely defining Diagrams and templates. For a complete example, this code:

const $ = go.GraphObject.make;

const myDiagram = $(go.Diagram, "myDiagramDiv",
  {
    "undoManager.isEnabled": true
  });

myDiagram.nodeTemplate =
  $(go.Node, "Auto",
    $(go.Shape, "RoundedRectangle",
      { strokeWidth: 0, fill: "white" },
      new go.Binding("fill", "color")),
    $(go.TextBlock,
      { margin: 8, font: "bold 14px sans-serif", stroke: '#333' },
      new go.Binding("text", "key"))
  );

Can now be written as:

const myDiagram = new go.Diagram("myDiagramDiv",
  {
    "undoManager.isEnabled": true
  });

myDiagram.nodeTemplate =
  new go.Node("Auto")
    .add(new go.Shape("RoundedRectangle", { strokeWidth: 0, fill: "white" })
          .bind("fill", "color"))
    .add(new go.TextBlock({ margin: 8, font: "bold 14px sans-serif", stroke: '#333' })
          .bind("text", "key"));

For more information and examples, see the intro page on Building Objects.

General New Features in GoJS 2.2

• Spot Panels now support Panel.alignmentFocusName on the main element. This can be useful for creating Spot panels with multiple item arrays that align to the same main element. There is an example of this property in the Spot Panel section of the Panel intro page.
• The Diagram.autoScrollInterval property controls the milliseconds between autoscroll events.
• The Diagram.delayInitialization's argument function is now a passed a reference to the Diagram.
• The Overview.drawsGrid and Overview.updateDelay properties control drawing by an Overview.
• The CommandHandler.isZoomToFitRestoreEnabled property controls whether the CommandHandler.zoomToFit command ever restores the previous Diagram scale and position.
• The DraggingTool.copyCursor, DraggingTool.moveCursor, and DraggingTool.nodropCursor properties modify the cursors during a drag.
• The LinkingBaseTool.linkingCursor property modifies the cursor during linking.
• The GraphObject.findBindingPanel method walks up the visual tree to return the first Panel whose Panel.data is bound to data. Used in the Hyperlink sample.
• The Panel.copyTemplate method makes a deep copy of a Panel, including its Bindings, to allow use of the result in templates. This is used in LinkLabels In Front sample.
• The TextBlock.formatting property controls the policy of trimming whitespace on TextBlock text. This can be useful when text strings are preformatted.
• The TextBlock.lineHeight property provides better information about how the text is being measured and rendered.
• The TextBlock.spacingAbove and TextBlock.spacingBelow properties better control the measuring and rendering in addition to the TextBlock.lineHeight.
• The Node.findExternalTreeLinksConnected method returns a collection of Links that connect with this Node or any in its subtree, excluding any isTreeLink Links. This is the tree-equivalent of Group.findExternalLinksConnected for Groups/subgraphs.
• The Node.findVisibleNode method walks up the chain of Node.containingGroups to find the first node that is visible. This can be overridden to change behavior, as it is in Tree Mapper sample.
• The PanelLayout.remeasureObject method forces a specific GraphObject (but none of its containing panels) to remeasure. This can be useful implementing custom layouts.
• The DraggingTool now optimizes transactions to reduce memory usage by only saving the first and last drag changes. This can...

2.1.56

Changes for 2.1.56

• Updated the root object for systems that define window but do not attach all global variables to it. GoJS now prefers globalThis if it exists, then global.

2.1.55

Changes for 2.1.55

• Fixed some improper shadows in the SVG output of Diagram.makeSVG.

2.1.54

Changes for 2.1.54

• Fixed Diagram.viewSize when setting it to a real value and then later setting it back to a NaN value.
• As with 2.1.52, fixed more scenarios with custom animations improperly adding state to the AnimationManager.defaultAnimation.
• Fixed rare cases of LayeredDigraphLayout trying to get the "centerX" property of a null vertex.

2.1.53

• Fixed Binding.ofModel binding when there is no Diagram and thus no Model to just ignore the binding.
• Fixed a regression in Diagram.makeSVG from 2.1.49 when using a Panel.Spot with Panel.isClipping set to true, where some elements would get grouped and positioned incorrectly.
• Fixed Model.toJSON output when object keys contained unescaped double-quote characters.
• Fixed some Shape Geometry intersections (such as with Link connections) when the Shape's Geometry contained small and flat beziers.
• Fixed collapsed Parts incorrectly causing their Groups to remeasure, which may have caused Group's connected Links to re-route.

2.1.52

Changes for 2.1.52

• Fixed animations incorrectly resetting some link routes.
• Fixed custom animations improperly adding state to the AnimationManager.defaultAnimation.
• Fixed a regression in 2.1.51 where un-modeled parts containing Images, that are added before a model is set, may fail to load.
• Fixed a regression from 2.1.50 when Picture.errorFunction was used to modify the Picture.source or Picture.element, which would cause a "Collection was modified during iteration" error.

2.1.40

• Fixed some styling and missing files in the web site as a result of the reorganization in 2.1.39.
• Simplified the Storage and FloorplannerTS projects.

2.1.51

• The TextEditingTool, when the user has entered an invalid text string, has always called any TextBlock.errorFunction and then continued showing the text editor so that the user could fix their text entry. The TextEditingTool.doError method now calls any TextBlock.errorFunction and also calls HTMLInfo.show on the TextEditingTool.currentTextEditor. This will allow an override of TextEditingTool.doError not to continue showing the editor. If you have not overridden that method, which was new in 2.1, this change will not affect you.
• Fixed Model.fromJson not to substitute instances of classes such as Point and Size when the Object's "class" property had a value that is "Point" or "Size". The property value must be what is produced by Model.toJson, which uses values such as "go.Point" or "go.Size". The documentation lists all of the substitution cases that Model.fromJson handles.
• Fixed a regression from 2.1.43 which caused some links to animate routes incorrectly upon dragging.
• Fixed loading Images used as a Picture.element.
• Improved some AvoidsNodes routing of Links when connecting Nodes in different Groups and the Groups are not Group.avoidable.
• Fixed using multiple license keys.

2.1.50

Changes for 2.1.50

• Enhanced the LinkShiftingTool extension to support links that are only connected at one end.
• Fixed CommandHandler.doKeyDown to support Robot.keyDown use of "F2" and "ContextMenu" keys.
• Improved routing of AvoidsNodes links that have a "to" end segment with a direction that is a multiple of 45 (but not 90) degrees.
• Fixed diagram not redrawing after images load in frameworks that use a shadow DOM, such as Angular.
• If you call TextBlock.setBaseline or TextBlock.setUnderline outside of your diagram initialization, you should also call Diagram.redraw on all Diagrams.