Gets or sets a property that determines whether the manager should synchronize the autoAdjustGroupNodeBounds property of the masterGroupedGraph with the client views.

IGroupedGraph. This property should be disabled to allow for modifying the contents of a collapsed group node without affecting the ancestor group nodes of nodes which would otherwise not be affected by that change.

The default value is adopted from the initial setting of the autoAdjustGroupNodeBounds property of the masterGroupedGraph. If the graph is created using the FoldingManager() constructor, the initial value will be false.

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Gets or sets the predicate function to use by default to determine the expanded state for the views that have been created with the default expanded predicate function.

The default value of this predicate is the isInitiallyExpanded() method of this class.

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Gets or sets the IDummyEdgeConverter implementation that is used to create/convert and modify the DummyEdgeId inside the view instances.

The converter instance will be used to create the initial dummy edge appearance using IDummyEdgeConverter#createDummyEdgeAppearance() and to change the appearance using IDummyEdgeConverter#changeDummyEdgeAppearance() as soon as they appear in a view.

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The IDummyNodeConverter implementation that is used to create/convert and modify the DummyNodeId inside the view instances.

The converter instance will be used to create and convert the appearance of the collapsed dummy group nodes as soon as they appear in a view.

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Yields the master IGraph instance that holds the complete model in expanded group node state.

This graph contains all non-dummy edges and expanded group nodes, no dummy edges and no collapsed group nodes.

Yields the master IGroupedGraph instance that models the fully expanded grouped graph.

This is the instance that is associated with the masterGraph and the masterHierarchy.

Yields the master INodeIHierarchy instance that contains all nodes in the model, regardless of their (view-local) collapsed state.

This is the hierarchy that is associated with the IGroupedGraph that belongs to the masterGraph.

Yields all currently known views that are managed by this instance.

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Creates a manager instance for the given masterGraph to create views on top of it that support folding operations.

Use createManagedView() to create a view that supports the IFoldedGraph interface for displaying and working with a collapsible graph structure.

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Creates a separate view instance of the masterGraph which is a synchronized copy of a subset of the items from the master graph.

This method will create a new instance of an IGraph that is constructed as a synchronized copy of the masterGraph. That instance can be obtained from the IFoldedGraph#graph property of the returned IFoldedGraph implementation. The graph instance will provide the following instances in its lookup() mechanism:

• IFoldedGraph: The instance of the IFoldedGraph interface that can be used to gain access to this IFoldedGraph#manager and the folding operations.
• IGroupedGraph: An implementation of the IGroupedGraph interface that can be used to modify and inspect the local INodeHierarchy in this view.

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Determines whether for the given DummyEdgeId this manager has stored associated view local state.

The manager does not necessarily have view local state for dummy elements if that specific state has never been requested by a IFoldedGraph view because it has never been visualized. This method indicates whether there is state information available for the given id.

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Returns a callback object that can be used to modify the appearance of a given dummy edge without using a IFoldedGraph view.

This method can be used to modify the view state state of a dummy edge, even if there is no view, that is currently displaying this edge. The methods provided by the callback implementation will work on the given DummyEdgeId and will affect all views that display that exact dummy edge. Using the callback is the only way of modifying a dummy edge view state, since the IEdge instance returned by getEdgeViewState() does not belong to an accessible IGraph instance and thus cannot be modified otherwise.

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Returns a callback object that can be used to modify the appearance of a given dummy node without using a IFoldedGraph view.

This method can be used to modify the getNodeViewState() state of a dummy node, even if there is no view, that is currently displaying this node. The methods provided by the callback implementation will work on the given DummyNodeId and will affect all views that display that exact dummy node.

Using the callback is the only way of modifying a getNodeViewState(), since the INode instance returned by getNodeViewState() does not belong to an accessible IGraph instance and thus cannot be modified otherwise.

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Return a data container implementation that is not part of any actual IGraph that describes the state of the edge for the given DummyEdgeId.

This method can be used to query the state of an edge that is either not currently visible in any views or connects to different source and target nodes because of the collapse states of the nodes and their parents in the view. The state can only be modified using the callback provided by getChangeDummyEdgeAppearanceCallback(dummyEdgeId) or by modifying the corresponding item in a IFoldedGraph view.

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Provides access to the dummy state of a node for a specific view.

This method can be used to query the collapsed state of a node in a specific view, even if there is no such view currently present or the node is in fact expanded currently in that view. Note that the instance returned is neither part of the masterGraph nor part of any of the managed views. It serves as a data holder object only and the only way to modify it is using the ChangeDummyNodeAppearanceCallback provided by the getChangeDummyNodeAppearanceCallback() method or directly working on the dummy node in a IFoldedGraph view.

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Provides access to the dummy state of a port for a specific view.

This method can be used to query the state of a port at a collapsed node in a specific view, even if there is no such view currently present or the port's node is in fact expanded currently in that view. Note that the instance returned is neither part of the MasterGraph nor part of any of the managed views. It serves as a data holder object only and the only way to modify it is using the IChangeDummyNodeAppearanceCallback provided by the GetChangeDummyAppearanceCallback(DummyNodeId) method or directly working on the dummy port in a IFoldedGraph view.

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Determines whether the given group node from the masterGraph should be displayed in expanded state if it is included in a managed view for the first time.

The createManagedView(INode) factory method use the defaultExpandedPredicate function to determine the initial expanded state of a group node. This method is the initial value of the predicate. This simple implementation will yield true, unless setInitiallyExpanded has been called before for the provided group node, in which case that specific value will be returned.

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Determines whether for the given DummyNodeId this manager has stored associated view local state.

The manager does not necessarily have view local state for dummy elements if that specific state has never been requested by a IFoldedGraph view because it has never been visualized. This method indicates whether there is state information available for the given id.

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Determines whether for the given DummyNodePortId this manager has stored associated view local state.

The manager does not necessarily have view local state for dummy elements if that specific state has never been requested by a IFoldedGraph view because it has never been visualized. This method indicates whether there is state information available for the given id.

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Callback that can be overridden by subclasses to prepare the IFoldedGraph instance right before it will be initialized with a copy of the elements in the initial graph.

Subclasses could override this method to register additional IMapper instances with the graph instance or add IContextLookupChainLinks via the ILookupDecorator of the IFoldedGraph#graph to the instance if they are essential for the initial creation of the elements in the view instance. Overriding methods should always consider to call the base class implementation, first.

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Allows for setting the expanded state of a group node from the master graph that will be applied to the group nodes in the default managed views the next time it will become visible in those views.

The isInitiallyExpanded() function will be used as the predicate in the createManagedView() and factory method. This method can be used to set the expanded state that is returned by that method for the given groupNode.

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     var graphCanvas = new GraphCanvasComponent();
     graphCanvas.graph = new FoldingManager().createManagedView().graph;
     graphCanvas.inputMode = new GraphEditorInputMode();
     

This class can be used to create managed views of the masterGraph, where group nodes can appear as collapsed group nodes with their contents hidden. Edges that connect to elements inside collapsed group nodes can be configured to be represented by dummy edges in the views. The process of converting one or more true edges from the masterGraph to zero or more dummy edges can be customized, as well as the process of converting an expanded group node to a collapsed group node.