org.eclipse.gef4.zest.fx.behaviors

Class OpenNestedGraphOnZoomBehavior

java.lang.Object

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

org.eclipse.gef4.zest.fx.behaviors.OpenNestedGraphOnZoomBehavior

All Implemented Interfaces:

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

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

The OpenNestedGraphOnZoomBehavior handles the navigation to a nested graph when the user zooms into the nesting node.

Field Summary

Fields

Modifier and Type	Field and Description
protected double	zoomLevel The current zoom level.

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
OpenNestedGraphOnZoomBehavior()

Method Summary

Modifier and Type	Method and Description
void	activate()
void	deactivate()
NodeContentPart	getHost()
protected NavigationPolicy	getSemanticZoomPolicy() Returns the NavigationPolicy that is installed on the IRootPart of the host.
protected void	onZoomLevelChange(double oldScale, double newScale) Called upon zoom level changes (reported by the ViewportModel).

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

Field Detail

zoomLevel

protected double zoomLevel

The current zoom level.

Constructor Detail

OpenNestedGraphOnZoomBehavior

public OpenNestedGraphOnZoomBehavior()

Method Detail

activate

public void activate()

Specified by:

activate in interface IActivatable

Overrides:

activate in class AbstractBehavior<javafx.scene.Node>

deactivate

public void deactivate()

Specified by:

deactivate in interface IActivatable

Overrides:

deactivate in class AbstractBehavior<javafx.scene.Node>

getHost

public NodeContentPart getHost()

Specified by:

getHost in interface IBehavior<javafx.scene.Node>

Overrides:

getHost in class AbstractBehavior<javafx.scene.Node>

getSemanticZoomPolicy

protected NavigationPolicy getSemanticZoomPolicy()

Returns the NavigationPolicy that is installed on the IRootPart of the host.

Returns:

The NavigationPolicy that is installed on the IRootPart of the host.

onZoomLevelChange

protected void onZoomLevelChange(double oldScale,
                                 double newScale)

Called upon zoom level changes (reported by the ViewportModel). If the host is nesting a Graph, the zoom level is changed beyond 3, and the host claims at least half of the viewport area, then the nested Graph is opened.

Parameters:

oldScale - The previous zoom level.

newScale - The new zoom level.