GraphModelManager (yFiles-for-JavaFX-Complete-3.0 API)

java.lang.Object
- com.yworks.yfiles.view.GraphModelManager

```
public class GraphModelManager
extends Object
```
Manages the visual appearance of an IGraph instance in a CanvasControl.
This class monitors the structural changes of an IGraph implementation and installs the necessary ICanvasObject instance in the canvas for each item in the graph. Note that GraphControl has an instance of this type built-in already and usually it is not necessary to create an own one. This class will also use the node hierarchy to nest the nodes and edges accordingly.

See Also:

getNodeGroup(), isHierarchicEdgeNestingEnabled(), isHierarchicNodeNestingEnabled()

Field Summary

Fields
Modifier and Type	Field and Description
`static ICanvasObjectDescriptor`	`DEFAULT_EDGE_DESCRIPTOR` The immutable instance of the default `ICanvasObjectDescriptor` for `IEdge`s which simply defers to the edge's `IEdgeStyle`.
`static ICanvasObjectDescriptor`	`DEFAULT_LABEL_DESCRIPTOR` The immutable instance of the default `ICanvasObjectDescriptor` for `ILabel`s which simply defers to the label's `ILabelStyle`.
`static ICanvasObjectDescriptor`	`DEFAULT_NODE_DESCRIPTOR` The immutable instance of the default `ICanvasObjectDescriptor` for `INode`s which simply defers to the node's `INodeStyle`.
`static ICanvasObjectDescriptor`	`DEFAULT_PORT_DESCRIPTOR` The immutable instance of the default `ICanvasObjectDescriptor` for `IPort`s which simply defers to the port's `IPortStyle`.

Constructor Summary

Constructors
Constructor and Description
`GraphModelManager(CanvasControl canvas)` Creates a manager instance for the given control.
`GraphModelManager(CanvasControl canvas, ICanvasObjectGroup contentGroup)` Creates a manager instance for the given control.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`int`	`compare(IModelItem item1, IModelItem item2)` Compares two items with respect to their visibility order.
`protected ICanvasObjectGroup`	`createContentGroup()` Factory method that creates the `ContentGroup`.
`protected ICanvasObjectGroup`	`createEdgeGroup()` Factory method for the `EdgeGroup` property.
`protected ICanvasObjectGroup`	`createEdgeLabelGroup()` Factory method for the `EdgeLabelGroup` property.
`<T extends IModelItem> IHitTester<T>`	`createHitTester(Class<T> itemType)` Gets a `IHitTester` that can be used to enumerate hits on the canvas at a given world coordinate position.
`protected ICanvasObjectGroup`	`createNodeGroup()` Factory method for the `NodeGroup` property.
`protected ICanvasObjectGroup`	`createNodeLabelGroup()` Factory method for the `NodeLabelGroup` property.
`protected ICanvasObjectGroup`	`createPortGroup()` Factory method for the `PortGroup` property.
`ICanvasObject`	`getCanvasObject(IModelItem item)` Retrieves the `ICanvasObject` for a given model item managed by this instance.
`protected ICanvasObjectGroup`	`getCanvasObjectGroup(IEdge edge)` Retrieves the Canvas Object group to use for the given edge.
`protected ICanvasObjectGroup`	`getCanvasObjectGroup(ILabel label)` Retrieves the Canvas Object group to use for the given label.
`protected ICanvasObjectGroup`	`getCanvasObjectGroup(INode node)` Retrieves the Canvas Object group to use for the given node.
`protected ICanvasObjectGroup`	`getCanvasObjectGroup(IPort port)` Retrieves the Canvas Object group to use for the given port.
`Comparator<IModelItem>`	`getComparator()` Gets an `Comparator` instance that can be used to compare two model items with respect to their visual display order.
`ICanvasObjectGroup`	`getContentGroup()` Gets the content group this manager instance uses to add visual representation of the graph to.
`ICanvasObjectDescriptor`	`getEdgeDescriptor()` Gets the `ICanvasObjectDescriptor` instance used for installing an `IEdge` into the canvas.
`ICanvasObjectGroup`	`getEdgeGroup()` Gets the `ICanvasObjectGroup` instance that will be used for installing edge styles.
`ICanvasObjectDescriptor`	`getEdgeLabelDescriptor()` Gets the `ICanvasObjectDescriptor` instance used for installing an `ILabel` of an `IEdge` into the canvas.
`ICanvasObjectGroup`	`getEdgeLabelGroup()` Gets the `ICanvasObjectGroup` instance that will be used for installing edge label styles.
`IGraph`	`getGraph()` Gets the graph this manager manages.
`IHitTester<IModelItem>`	`getHitTester()` Gets a `IHitTester` that can be used to enumerate hits on the canvas at a given world coordinate position.
`IModelItem`	`getModelItem(ICanvasObject canvasObject)` Retrieves the corresponding `IModelItem` for the given canvas object.
`ICanvasObjectDescriptor`	`getNodeDescriptor()` Gets the `ICanvasObjectDescriptor` instance used for installing an `INode` into the canvas.
`ICanvasObjectGroup`	`getNodeGroup()` Gets the `ICanvasObjectGroup` instance that will be used for installing node styles.
`ICanvasObjectDescriptor`	`getNodeLabelDescriptor()` Gets the `ICanvasObjectDescriptor` instance used for installing an `ILabel` of an `INode` into the canvas.
`ICanvasObjectGroup`	`getNodeLabelGroup()` Gets the `ICanvasObjectGroup` instance that will be used for installing node label styles.
`ICanvasObjectDescriptor`	`getPortDescriptor()` Gets the `ICanvasObjectDescriptor` instance used for installing an `IPort` into the canvas.
`ICanvasObjectGroup`	`getPortGroup()` Gets the `ICanvasObjectGroup` instance that will be used for installing port styles.
`IEnumerable<IModelItem>`	`hitElementsAt(IInputModeContext context, PointD location, ICanvasObjectGroup root)` Enumerates hits on the canvas at a given world coordinate position for a given context.
`IEnumerable<IModelItem>`	`hitElementsAt(PointD location)` Enumerates hits on the canvas at a given world coordinate position.
`boolean`	`isHierarchicEdgeNestingEnabled()` Determines whether this instance should nest the edges accordingly if the graph is grouped.
`boolean`	`isHierarchicNodeNestingEnabled()` Determines whether this instance should nest the nodes `and optionally edges` accordingly if the graph is grouped.
`protected void`	`onGraphChanged(IGraph oldGraph, IGraph newGraph)` Called when the `Graph` property changes.
`void`	`setContentGroup(ICanvasObjectGroup value)` Sets the content group this manager instance uses to add visual representation of the graph to.
`void`	`setEdgeDescriptor(ICanvasObjectDescriptor value)` Sets the `ICanvasObjectDescriptor` instance used for installing an `IEdge` into the canvas.
`void`	`setEdgeLabelDescriptor(ICanvasObjectDescriptor value)` Sets the `ICanvasObjectDescriptor` instance used for installing an `ILabel` of an `IEdge` into the canvas.
`void`	`setGraph(IGraph value)` Sets the graph this manager manages.
`void`	`setHierarchicEdgeNestingEnabled(boolean value)` Determines whether this instance should nest the edges accordingly if the graph is grouped.
`void`	`setHierarchicNodeNestingEnabled(boolean value)` Determines whether this instance should nest the nodes `and optionally edges` accordingly if the graph is grouped.
`void`	`setNodeDescriptor(ICanvasObjectDescriptor value)` Sets the `ICanvasObjectDescriptor` instance used for installing an `INode` into the canvas.
`void`	`setNodeLabelDescriptor(ICanvasObjectDescriptor value)` Sets the `ICanvasObjectDescriptor` instance used for installing an `ILabel` of an `INode` into the canvas.
`void`	`setPortDescriptor(ICanvasObjectDescriptor value)` Sets the `ICanvasObjectDescriptor` instance used for installing an `IPort` into the canvas.
`<T extends IModelItem> IEnumerable<T>`	`typedHitElementsAt(Class<T> modelItemType, IInputModeContext context, PointD location, ICanvasObjectGroup root)` Enumerates hits on the canvas at a given world coordinate position in a given context.
`<T extends IModelItem> IEnumerable<T>`	`typedHitElementsAt(Class<T> itemType, PointD location)` Enumerates hits on the canvas at a given world coordinate position.
`void`	`updateDescriptor(IModelItem item)` `Updates` the visual representation of the given item.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - DEFAULT_EDGE_DESCRIPTOR
```
public static final ICanvasObjectDescriptor DEFAULT_EDGE_DESCRIPTOR
```
    The immutable instance of the default ICanvasObjectDescriptor for IEdges which simply defers to the edge's IEdgeStyle.
  - DEFAULT_LABEL_DESCRIPTOR
```
public static final ICanvasObjectDescriptor DEFAULT_LABEL_DESCRIPTOR
```
    The immutable instance of the default ICanvasObjectDescriptor for ILabels which simply defers to the label's ILabelStyle.
  - DEFAULT_NODE_DESCRIPTOR
```
public static final ICanvasObjectDescriptor DEFAULT_NODE_DESCRIPTOR
```
    The immutable instance of the default ICanvasObjectDescriptor for INodes which simply defers to the node's INodeStyle.
  - DEFAULT_PORT_DESCRIPTOR
```
public static final ICanvasObjectDescriptor DEFAULT_PORT_DESCRIPTOR
```
    The immutable instance of the default ICanvasObjectDescriptor for IPorts which simply defers to the port's IPortStyle.
- Constructor Detail
  - GraphModelManager
```
public GraphModelManager(CanvasControl canvas)
```
    Creates a manager instance for the given control.
    The contents of the graph will be added to a newly created group that is added to the root of the scene graph.
    
    In order to get anything useful out of this instance the Graph property should be set to an instance after construction.
    
    Parameters:
    
    canvas - the canvas to manage the visual appearance of a graph for.
  - GraphModelManager
```
public GraphModelManager(CanvasControl canvas,
                         ICanvasObjectGroup contentGroup)
```
    Creates a manager instance for the given control.
    The contents of the graph will be added to given group that is must be part of the canvas.
    
    In order to get anything useful out of this instance the Graph property should be set to an instance after construction.
    
    Parameters:
    
    canvas - the canvas to manage the visual appearance of a graph for.
    
    contentGroup - the group to add the graph's visual content to. Can be null, in which case ContentGroup should be set afterwards or createContentGroup() will automatically create a group lazily.
- Method Detail
  - compare
```
public int compare(IModelItem item1,
                   IModelItem item2)
```
    Compares two items with respect to their visibility order.
    
    Parameters:
    
    item1 - the first item to compare
    
    item2 - the second item to compare
    
    Returns:
    
    an integer value indicating the relative rendering order of the two items
    
    See Also:
    
    getComparator()
  - createContentGroup
```
protected ICanvasObjectGroup createContentGroup()
```
    Factory method that creates the ContentGroup.
    The default implementation will just add another group to the CanvasControl.
    
    Returns:
    
    The group to use for adding the content.
  - createEdgeGroup
```
protected ICanvasObjectGroup createEdgeGroup()
```
    Factory method for the EdgeGroup property.
    This method will be called upon first access to the property.
    
    Returns:
    
    a new group that has been added to the ContentGroup
  - createEdgeLabelGroup
```
protected ICanvasObjectGroup createEdgeLabelGroup()
```
    Factory method for the EdgeLabelGroup property.
    This method will be called upon first access to the property.
    
    Returns:
    
    a new group that has been added to the ContentGroup
  - createHitTester
```
public <T extends IModelItem> IHitTester<T> createHitTester(Class<T> itemType)
```
    Gets a IHitTester that can be used to enumerate hits on the canvas at a given world coordinate position.
    This enumerator will enumerate hits in the order so that the visually topmost element will be reported first.
  - createNodeGroup
```
protected ICanvasObjectGroup createNodeGroup()
```
    Factory method for the NodeGroup property.
    This method will be called upon first access to the property.
    
    Returns:
    
    a new group that has been added to the ContentGroup
  - createNodeLabelGroup
```
protected ICanvasObjectGroup createNodeLabelGroup()
```
    Factory method for the NodeLabelGroup property.
    This method will be called upon first access to the property.
    
    Returns:
    
    a new group that has been added to the ContentGroup
  - createPortGroup
```
protected ICanvasObjectGroup createPortGroup()
```
    Factory method for the PortGroup property.
    This method will be called upon first access to the property.
    
    Returns:
    
    a new group that has been added to the ContentGroup
  - getCanvasObject
```
public ICanvasObject getCanvasObject(IModelItem item)
```
    Retrieves the ICanvasObject for a given model item managed by this instance.
    
    Parameters:
    
    item - the item
    
    Returns:
    
    the canvas object for the given item or null
    
    See Also:
    
    ItemModelManager.getCanvasObject(Object)
  - getCanvasObjectGroup
```
protected ICanvasObjectGroup getCanvasObjectGroup(IEdge edge)
```
    Retrieves the Canvas Object group to use for the given edge.
    This implementation is called by the default EdgeDescriptor instance.
    
    Parameters:
    
    edge - The edge that will be installed in the canvas.
    
    Returns:
    
    The group to use.
  - getCanvasObjectGroup
```
protected ICanvasObjectGroup getCanvasObjectGroup(ILabel label)
```
    Retrieves the Canvas Object group to use for the given label.
    This implementation is called by the default NodeLabelDescriptor and EdgeLabelDescriptor instances.
    
    Parameters:
    
    label - The label that will be installed in the canvas.
    
    Returns:
    
    The group to use.
  - getCanvasObjectGroup
```
protected ICanvasObjectGroup getCanvasObjectGroup(INode node)
```
    Retrieves the Canvas Object group to use for the given node.
    This implementation is called by the default NodeDescriptor instance.
    
    Parameters:
    
    node - The node that will be installed in the canvas.
    
    Returns:
    
    The group to use.
  - getCanvasObjectGroup
```
protected ICanvasObjectGroup getCanvasObjectGroup(IPort port)
```
    Retrieves the Canvas Object group to use for the given port.
    This implementation is called by the default PortDescriptor instance.
    
    Parameters:
    
    port - The port that will be installed in the canvas.
    
    Returns:
    
    The group to use.
  - getComparator
```
public final Comparator<IModelItem> getComparator()
```
    Gets an Comparator instance that can be used to compare two model items with respect to their visual display order.
    An item is considered to be greater than another item if it is rendered on top of it.
    
    Returns:
    
    The Comparator.
  - getContentGroup
```
public final ICanvasObjectGroup getContentGroup()
```
    Gets the content group this manager instance uses to add visual representation of the graph to.
    
    Returns:
    
    The ContentGroup.
    
    See Also:
    
    setContentGroup(ICanvasObjectGroup)
  - getEdgeDescriptor
```
public final ICanvasObjectDescriptor getEdgeDescriptor()
```
    Gets the ICanvasObjectDescriptor instance used for installing an IEdge into the canvas.
    
    Returns:
    
    The EdgeDescriptor.
    
    See Also:
    
    setEdgeDescriptor(ICanvasObjectDescriptor)
  - getEdgeGroup
```
public final ICanvasObjectGroup getEdgeGroup()
```
    Gets the ICanvasObjectGroup instance that will be used for installing edge styles.
    If the field has not yet been initialized upon first access, the factory method createEdgeGroup() will be called. Note that in the case of hierarchically nested graphs edges will only be put directly in this ICanvasObjectGroup, if the HierarchicEdgeNestingEnabled property is set to false. Otherwise edges will actually be nested in the subtree of the NodeGroup according to the node nesting.
    
    Returns:
    
    The EdgeGroup.
    
    See Also:
    
    getCanvasObjectGroup(IEdge), getEdgeDescriptor()
  - getEdgeLabelDescriptor
```
public final ICanvasObjectDescriptor getEdgeLabelDescriptor()
```
    Gets the ICanvasObjectDescriptor instance used for installing an ILabel of an IEdge into the canvas.
    
    Returns:
    
    The EdgeLabelDescriptor.
    
    See Also:
    
    setEdgeLabelDescriptor(ICanvasObjectDescriptor)
  - getEdgeLabelGroup
```
public final ICanvasObjectGroup getEdgeLabelGroup()
```
    Gets the ICanvasObjectGroup instance that will be used for installing edge label styles.
    If the field has not yet been initialized upon first access, the factory method createEdgeLabelGroup() will be called.
    
    Returns:
    
    The EdgeLabelGroup.
    
    See Also:
    
    getCanvasObjectGroup(ILabel), getEdgeLabelDescriptor()
  - getGraph
```
public final IGraph getGraph()
```
    Gets the graph this manager manages.
    
    Returns:
    
    The Graph.
    
    See Also:
    
    onGraphChanged(IGraph, IGraph), setGraph(IGraph)
  - getHitTester
```
public final IHitTester<IModelItem> getHitTester()
```
    Gets a IHitTester that can be used to enumerate hits on the canvas at a given world coordinate position.
    This enumerator will enumerate hits in the order so that the visually topmost element will be reported first.
    
    Returns:
    
    The HitTester.
  - getModelItem
```
public IModelItem getModelItem(ICanvasObject canvasObject)
```
    Retrieves the corresponding IModelItem for the given canvas object.
    
    Parameters:
    
    canvasObject - the instance to use for the query
    
    Returns:
    
    The item that is associated with the object or null.
  - getNodeDescriptor
```
public final ICanvasObjectDescriptor getNodeDescriptor()
```
    Gets the ICanvasObjectDescriptor instance used for installing an INode into the canvas.
    
    Returns:
    
    The NodeDescriptor.
    
    See Also:
    
    setNodeDescriptor(ICanvasObjectDescriptor)
  - getNodeGroup
```
public final ICanvasObjectGroup getNodeGroup()
```
    Gets the ICanvasObjectGroup instance that will be used for installing node styles.
    If the field has not yet been initialized upon first access, the factory method createNodeGroup() will be called. Note that in the case of hierarchic node nesting, nodes will not be installed at the top-level of this group. Rather a more complicated nesting of dynamically created ICanvasObjectGroups will be used.
    
    Returns:
    
    The NodeGroup.
    
    See Also:
    
    getCanvasObjectGroup(INode), getNodeDescriptor()
  - getNodeLabelDescriptor
```
public final ICanvasObjectDescriptor getNodeLabelDescriptor()
```
    Gets the ICanvasObjectDescriptor instance used for installing an ILabel of an INode into the canvas.
    
    Returns:
    
    The NodeLabelDescriptor.
    
    See Also:
    
    setNodeLabelDescriptor(ICanvasObjectDescriptor)
  - getNodeLabelGroup
```
public final ICanvasObjectGroup getNodeLabelGroup()
```
    Gets the ICanvasObjectGroup instance that will be used for installing node label styles.
    If the field has not yet been initialized upon first access, the factory method createNodeLabelGroup() will be called.
    
    Returns:
    
    The NodeLabelGroup.
    
    See Also:
    
    getCanvasObjectGroup(ILabel), getNodeLabelDescriptor()
  - getPortDescriptor
```
public final ICanvasObjectDescriptor getPortDescriptor()
```
    Gets the ICanvasObjectDescriptor instance used for installing an IPort into the canvas.
    
    Returns:
    
    The PortDescriptor.
    
    See Also:
    
    setPortDescriptor(ICanvasObjectDescriptor)
  - getPortGroup
```
public final ICanvasObjectGroup getPortGroup()
```
    Gets the ICanvasObjectGroup instance that will be used for installing port styles.
    If the field has not yet been initialized upon first access, the factory method createPortGroup() will be called.
    
    Returns:
    
    The PortGroup.
    
    See Also:
    
    getCanvasObjectGroup(IPort), getPortDescriptor()
  - hitElementsAt
```
public IEnumerable<IModelItem> hitElementsAt(IInputModeContext context,
                                             PointD location,
                                             ICanvasObjectGroup root)
```
    Enumerates hits on the canvas at a given world coordinate position for a given context.
    The instance returned will enumerate hits in the order so that the topmost visual element will be reported first. The enumeration is performed lazily.
    
    Parameters:
    
    context - The context to provide to IHitTestable.isHit(IInputModeContext, PointD)
    
    location - the world coordinates to perform the hit test
    
    root - The group to search the subtree of.
    
    Returns:
    
    an enumerable that will enumerate the hits at the given coordinates
  - hitElementsAt
```
public IEnumerable<IModelItem> hitElementsAt(PointD location)
```
    Enumerates hits on the canvas at a given world coordinate position.
    The instance returned will enumerate hits in the order so that the topmost visual element will be reported first. The enumeration is performed lazily.
    
    Parameters:
    
    location - the world coordinates to perform the hit test
    
    Returns:
    
    an enumerable that will enumerate the hits at the given coordinates
  - isHierarchicEdgeNestingEnabled
```
public final boolean isHierarchicEdgeNestingEnabled()
```
    Determines whether this instance should nest the edges accordingly if the graph is grouped.
    Hierarchic nesting for edges requires that hierarchic nesting for nodes is enabled as well. If both properties are enabled (the default) the edges will actually be interleaved with the nodes in the nested canvas object subtree so the EdgeGroup will be empty.
    
    Returns:
    
    The HierarchicEdgeNestingEnabled.
    
    See Also:
    
    isHierarchicNodeNestingEnabled(), setHierarchicEdgeNestingEnabled(boolean)
  - isHierarchicNodeNestingEnabled
```
public final boolean isHierarchicNodeNestingEnabled()
```
    Determines whether this instance should nest the nodes and optionally edges accordingly if the graph is grouped.
    
    Returns:
    
    true (the default) iff the hierarchy should be queried.
    
    See Also:
    
    setHierarchicNodeNestingEnabled(boolean)
  - onGraphChanged
```
protected void onGraphChanged(IGraph oldGraph,
                              IGraph newGraph)
```
    Called when the Graph property changes.
    This method registers the collections of the graph instance with the mechanism that manages the mapping between the elements and the ICanvasObjects. Subclasses should call the base method if they want to use the default mechanisms.
    
    Parameters:
    
    oldGraph - The old graph instance.
    
    newGraph - The new graph instance.
  - setContentGroup
```
public final void setContentGroup(ICanvasObjectGroup value)
```
    Sets the content group this manager instance uses to add visual representation of the graph to.
    
    Parameters:
    
    value - The ContentGroup to set.
    
    See Also:
    
    getContentGroup()
  - setEdgeDescriptor
```
public final void setEdgeDescriptor(ICanvasObjectDescriptor value)
```
    Sets the ICanvasObjectDescriptor instance used for installing an IEdge into the canvas.
    
    Parameters:
    
    value - The EdgeDescriptor to set.
    
    See Also:
    
    getEdgeDescriptor()
  - setEdgeLabelDescriptor
```
public final void setEdgeLabelDescriptor(ICanvasObjectDescriptor value)
```
    Sets the ICanvasObjectDescriptor instance used for installing an ILabel of an IEdge into the canvas.
    
    Parameters:
    
    value - The EdgeLabelDescriptor to set.
    
    See Also:
    
    getEdgeLabelDescriptor()
  - setGraph
```
public final void setGraph(IGraph value)
```
    Sets the graph this manager manages.
    
    Parameters:
    
    value - The Graph to set.
    
    See Also:
    
    onGraphChanged(IGraph, IGraph), getGraph()
  - setHierarchicEdgeNestingEnabled
```
public final void setHierarchicEdgeNestingEnabled(boolean value)
```
    Determines whether this instance should nest the edges accordingly if the graph is grouped.
    Hierarchic nesting for edges requires that hierarchic nesting for nodes is enabled as well. If both properties are enabled (the default) the edges will actually be interleaved with the nodes in the nested canvas object subtree so the EdgeGroup will be empty.
    
    Parameters:
    
    value - The HierarchicEdgeNestingEnabled to set.
    
    See Also:
    
    isHierarchicNodeNestingEnabled(), isHierarchicEdgeNestingEnabled()
  - setHierarchicNodeNestingEnabled
```
public final void setHierarchicNodeNestingEnabled(boolean value)
```
    Determines whether this instance should nest the nodes and optionally edges accordingly if the graph is grouped.
    
    Parameters:
    
    value - true (the default) iff the hierarchy should be queried.
    
    See Also:
    
    isHierarchicNodeNestingEnabled()
  - setNodeDescriptor
```
public final void setNodeDescriptor(ICanvasObjectDescriptor value)
```
    Sets the ICanvasObjectDescriptor instance used for installing an INode into the canvas.
    
    Parameters:
    
    value - The NodeDescriptor to set.
    
    See Also:
    
    getNodeDescriptor()
  - setNodeLabelDescriptor
```
public final void setNodeLabelDescriptor(ICanvasObjectDescriptor value)
```
    Sets the ICanvasObjectDescriptor instance used for installing an ILabel of an INode into the canvas.
    
    Parameters:
    
    value - The NodeLabelDescriptor to set.
    
    See Also:
    
    getNodeLabelDescriptor()
  - setPortDescriptor
```
public final void setPortDescriptor(ICanvasObjectDescriptor value)
```
    Sets the ICanvasObjectDescriptor instance used for installing an IPort into the canvas.
    
    Parameters:
    
    value - The PortDescriptor to set.
    
    See Also:
    
    getPortDescriptor()
  - typedHitElementsAt
```
public <T extends IModelItem> IEnumerable<T> typedHitElementsAt(Class<T> modelItemType,
                                                                IInputModeContext context,
                                                                PointD location,
                                                                ICanvasObjectGroup root)
```
    Enumerates hits on the canvas at a given world coordinate position in a given context.
    The instance returned will enumerate hits in the order so that the topmost visual element will be reported first. The enumeration is performed lazily.
    
    Parameters:
    
    context - The context to provide to IHitTestable.isHit(IInputModeContext, PointD)
    
    location - the world coordinates to perform the hit test
    
    root - The group to search the subtree of.
    
    Returns:
    
    an enumerable that will enumerate the hits at the given coordinates
  - typedHitElementsAt
```
public <T extends IModelItem> IEnumerable<T> typedHitElementsAt(Class<T> itemType,
                                                                PointD location)
```
    Enumerates hits on the canvas at a given world coordinate position.
    The instance returned will enumerate hits in the order so that the topmost visual element will be reported first. The enumeration is performed lazily.
    
    Parameters:
    
    location - the world coordinates to perform the hit test
    
    Returns:
    
    an enumerable that will enumerate the hits at the given coordinates
  - updateDescriptor
```
public void updateDescriptor(IModelItem item)
```
    Updates the visual representation of the given item.
    
    Parameters:
    
    item - The item to update the visual representation
    
    See Also:
    
    CollectionModelManager.update(Object)

Class GraphModelManager

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

DEFAULT_EDGE_DESCRIPTOR

DEFAULT_LABEL_DESCRIPTOR

DEFAULT_NODE_DESCRIPTOR

DEFAULT_PORT_DESCRIPTOR

Constructor Detail

GraphModelManager

GraphModelManager

Method Detail

compare

createContentGroup

createEdgeGroup

createEdgeLabelGroup

createHitTester

createNodeGroup

createNodeLabelGroup

createPortGroup

getCanvasObject

getCanvasObjectGroup

getCanvasObjectGroup

getCanvasObjectGroup

getCanvasObjectGroup

getComparator

getContentGroup

getEdgeDescriptor

getEdgeGroup

getEdgeLabelDescriptor

getEdgeLabelGroup

getGraph

getHitTester

getModelItem

getNodeDescriptor

getNodeGroup

getNodeLabelDescriptor

getNodeLabelGroup

getPortDescriptor

getPortGroup

hitElementsAt

hitElementsAt

isHierarchicEdgeNestingEnabled

isHierarchicNodeNestingEnabled

onGraphChanged

setContentGroup

setEdgeDescriptor

setEdgeLabelDescriptor

setGraph

setHierarchicEdgeNestingEnabled

setHierarchicNodeNestingEnabled

setNodeDescriptor

setNodeLabelDescriptor

setPortDescriptor

typedHitElementsAt

typedHitElementsAt

updateDescriptor