org.eclipse.viatra.addon.viewers.runtime.zest.sources

Class ZestContentProvider

java.lang.Object

org.eclipse.viatra.addon.viewers.runtime.model.listeners.AbstractViewerStateListener

org.eclipse.viatra.addon.viewers.runtime.zest.sources.ZestContentProvider

All Implemented Interfaces:

org.eclipse.jface.viewers.IContentProvider, IViewerStateListener, IGraphEdgeContentProvider, INestedGraphContentProvider

public class ZestContentProvider
extends AbstractViewerStateListener
implements IGraphEdgeContentProvider

Content provider for Zest graphs. The implementation is more performant than ZestContentWithIsolatedNodesProvider, but does not support displaying isolated nodes.

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	displayContainment
protected ViewerState	state
protected ModifiableZestContentViewer	viewer

Constructor Summary

Constructors

Constructor and Description
ZestContentProvider()
ZestContentProvider(boolean displayContainment)

Method Summary

Modifier and Type	Method and Description
void	containmentAppeared(Containment containment)
void	containmentDisappeared(Containment containment)
void	dispose()
void	edgeAppeared(Edge edge)
void	edgeDisappeared(Edge edge)
java.lang.Object[]	getEdges() Returns all content elements which represent edges.
java.lang.Object[]	getNestedGraphNodes(java.lang.Object node) Returns the content elements representing the nodes within the graph that is nested inside the node represented by the given content element.
java.lang.Object[]	getNodes() Returns all content elements which represent nodes on the first level of the graph.
java.lang.Object	getSource(java.lang.Object edge)
java.lang.Object	getTarget(java.lang.Object edge)
boolean	hasNestedGraph(java.lang.Object node) Determines whether the node represented by the given content element has nested children.
void	inputChanged(org.eclipse.jface.viewers.Viewer viewer, java.lang.Object oldInput, java.lang.Object newInput)
void	itemAppeared(Item item)
void	itemDisappeared(Item item)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

viewer

protected ModifiableZestContentViewer viewer

state

protected ViewerState state

displayContainment

protected boolean displayContainment

Constructor Detail

ZestContentProvider

public ZestContentProvider()

ZestContentProvider

public ZestContentProvider(boolean displayContainment)

Method Detail

getNodes

public java.lang.Object[] getNodes()

Description copied from interface: IGraphEdgeContentProvider

Returns all content elements which represent nodes on the first level of the graph. If no nodes exist, either an empty array or null is returned.

Specified by:

getNodes in interface IGraphEdgeContentProvider

Specified by:

getNodes in interface INestedGraphContentProvider

Returns:

All content elements which represent nodes on the first level of the graph.

getNestedGraphNodes

public java.lang.Object[] getNestedGraphNodes(java.lang.Object node)

Description copied from interface: INestedGraphContentProvider

Returns the content elements representing the nodes within the graph that is nested inside the node represented by the given content element. If the node does not contain a nested graph, either an empty array or null is returned.

Specified by:

getNestedGraphNodes in interface INestedGraphContentProvider

Parameters:

node - A content element that represents a node.

Returns:

The content elements representing the nodes within the graph that is nested inside the node represented by the given content element.

hasNestedGraph

public boolean hasNestedGraph(java.lang.Object node)

Description copied from interface: INestedGraphContentProvider

Determines whether the node represented by the given content element has nested children.

Specified by:

hasNestedGraph in interface INestedGraphContentProvider

Parameters:

node - A content element that represents a node, according to the INestedGraphContentProvider.getNodes() method.

Returns:

true when the node represented by the given content element has nested children, otherwise false.

getEdges

public java.lang.Object[] getEdges()

Description copied from interface: IGraphEdgeContentProvider

Returns all content elements which represent edges.

Specified by:

getEdges in interface IGraphEdgeContentProvider

Returns:

getSource

public java.lang.Object getSource(java.lang.Object edge)

Specified by:

getSource in interface IGraphEdgeContentProvider

getTarget

public java.lang.Object getTarget(java.lang.Object edge)

Specified by:

getTarget in interface IGraphEdgeContentProvider

inputChanged

public void inputChanged(org.eclipse.jface.viewers.Viewer viewer,
                         java.lang.Object oldInput,
                         java.lang.Object newInput)

Specified by:

inputChanged in interface org.eclipse.jface.viewers.IContentProvider

itemAppeared

public void itemAppeared(Item item)

Specified by:

itemAppeared in interface IViewerStateListener

Overrides:

itemAppeared in class AbstractViewerStateListener

itemDisappeared

public void itemDisappeared(Item item)

Specified by:

itemDisappeared in interface IViewerStateListener

Overrides:

itemDisappeared in class AbstractViewerStateListener

edgeAppeared

public void edgeAppeared(Edge edge)

Specified by:

edgeAppeared in interface IViewerStateListener

Overrides:

edgeAppeared in class AbstractViewerStateListener

edgeDisappeared

public void edgeDisappeared(Edge edge)

Specified by:

edgeDisappeared in interface IViewerStateListener

Overrides:

edgeDisappeared in class AbstractViewerStateListener

containmentAppeared

public void containmentAppeared(Containment containment)

Specified by:

containmentAppeared in interface IViewerStateListener

Overrides:

containmentAppeared in class AbstractViewerStateListener

containmentDisappeared

public void containmentDisappeared(Containment containment)

Specified by:

containmentDisappeared in interface IViewerStateListener

Overrides:

containmentDisappeared in class AbstractViewerStateListener

dispose

public void dispose()

Specified by:

dispose in interface org.eclipse.jface.viewers.IContentProvider