org.eclipse.gef4.zest.fx.behaviors

Class LayoutContextBehavior

java.lang.Object

org.eclipse.gef4.mvc.behaviors.AbstractBehavior<javafx.scene.Node>

org.eclipse.gef4.zest.fx.behaviors.LayoutContextBehavior

All Implemented Interfaces:

IActivatable, IAdaptable.Bound<IVisualPart<javafx.scene.Node,? extends javafx.scene.Node>>, IPropertyChangeNotifier, IBehavior<javafx.scene.Node>

public class LayoutContextBehavior
extends AbstractBehavior<javafx.scene.Node>

The LayoutContextBehavior is responsible for initiating layout passes. It is only applicable to GraphContentPart.

Field Summary

Fields inherited from class org.eclipse.gef4.mvc.behaviors.AbstractBehavior

pcs

Fields inherited from interface org.eclipse.gef4.common.activate.IActivatable

ACTIVE_PROPERTY

Constructor Summary

Constructors

Constructor and Description
LayoutContextBehavior()

Method Summary

Modifier and Type	Method and Description
void	activate()
protected void	applyStaticLayout() Performs one layout pass using the static layout algorithm that is configured for the layout context.
void	deactivate()
protected GraphLayoutContext	getGraphLayoutContext() Returns the GraphLayoutContext that corresponds to the host.
GraphContentPart	getHost()
protected InfiniteCanvas	getInfiniteCanvas() Returns the InfiniteCanvas of the IViewer of the host.
protected NodeContentPart	getNestingPart() Returns the NodeContentPart that contains the nested graph to which the getGraphLayoutContext() corresponds.
protected void	onHostPropertyChange(java.beans.PropertyChangeEvent evt) Called upon property change notifications fired by the host.
protected void	onLayoutContextPropertyChange(java.beans.PropertyChangeEvent evt) Re-layout when certain properties of the LayoutContext change: static layout algorithm layout bounds
protected void	onNestingVisualLayoutBoundsChange(javafx.geometry.Bounds oldLayoutBounds, javafx.geometry.Bounds newLayoutBounds) Sets the layout bounds on the layout context for nested graphs.
protected void	onViewportModelPropertyChange(javafx.geometry.Bounds oldScrollableBounds, javafx.geometry.Bounds newScrollableBounds) Called upon viewport bounds changes to update the layout bounds.

Methods inherited from class org.eclipse.gef4.mvc.behaviors.AbstractBehavior

addFeedback, addFeedback, addHandles, addHandles, addPropertyChangeListener, getAdaptable, getFeedbackParts, getHandleParts, isActive, removeFeedback, removeHandles, removePropertyChangeListener, setAdaptable, switchAdaptableScopes

Methods inherited from class java.lang.Object

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

Constructor Detail

LayoutContextBehavior

public LayoutContextBehavior()

Method Detail

activate

public void activate()

Specified by:

activate in interface IActivatable

Overrides:

activate in class AbstractBehavior<javafx.scene.Node>

applyStaticLayout

protected void applyStaticLayout()

Performs one layout pass using the static layout algorithm that is configured for the layout context.

deactivate

public void deactivate()

Specified by:

deactivate in interface IActivatable

Overrides:

deactivate in class AbstractBehavior<javafx.scene.Node>

getGraphLayoutContext

protected GraphLayoutContext getGraphLayoutContext()

Returns the GraphLayoutContext that corresponds to the host.

Returns:

The GraphLayoutContext that corresponds to the host.

getHost

public GraphContentPart getHost()

Specified by:

getHost in interface IBehavior<javafx.scene.Node>

Overrides:

getHost in class AbstractBehavior<javafx.scene.Node>

getInfiniteCanvas

protected InfiniteCanvas getInfiniteCanvas()

Returns the InfiniteCanvas of the IViewer of the host.

Returns:

The InfiniteCanvas of the IViewer of the host.

getNestingPart

protected NodeContentPart getNestingPart()

Returns the NodeContentPart that contains the nested graph to which the getGraphLayoutContext() corresponds.

Returns:

The NodeContentPart that contains the nested graph to which the getGraphLayoutContext() corresponds.

onHostPropertyChange

protected void onHostPropertyChange(java.beans.PropertyChangeEvent evt)

Called upon property change notifications fired by the host. Performs a layout pass when either the activation of the host has finished, or the content synchronization for the host has finished.

Parameters:

evt - The PropertyChangeEvent that was fired by the host.

onLayoutContextPropertyChange

protected void onLayoutContextPropertyChange(java.beans.PropertyChangeEvent evt)

Re-layout when certain properties of the LayoutContext change:

• static layout algorithm
• layout bounds

Parameters:

evt - A PropertyChangeEvent that was fired by the layout context.

onNestingVisualLayoutBoundsChange

protected void onNestingVisualLayoutBoundsChange(javafx.geometry.Bounds oldLayoutBounds,
                                                 javafx.geometry.Bounds newLayoutBounds)

Sets the layout bounds on the layout context for nested graphs.

Parameters:

oldLayoutBounds - The previous nesting node's bounds.

newLayoutBounds - The current nesting node's bounds.

onViewportModelPropertyChange

protected void onViewportModelPropertyChange(javafx.geometry.Bounds oldScrollableBounds,
                                             javafx.geometry.Bounds newScrollableBounds)

Called upon viewport bounds changes to update the layout bounds.

Parameters:

oldScrollableBounds - The old Bounds.

newScrollableBounds - The new Bounds.