Package org.eclipse.e4.ui.workbench.renderers.swt

Class LazyStackRenderer

java.lang.Object

org.eclipse.e4.ui.internal.workbench.swt.AbstractPartRenderer

org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer

org.eclipse.e4.ui.workbench.renderers.swt.LazyStackRenderer

Direct Known Subclasses:

PerspectiveStackRenderer, StackRenderer

public abstract class LazyStackRenderer
extends SWTPartRenderer

This class encapsulates the functionality necessary to manage stacks of parts in a 'lazy loading' manner. For these stacks only the currently 'active' child most be rendered so in this class we over ride that default behavior for processing the stack's contents to prevent all of the contents from being rendered, calling 'childAdded' instead. This not only saves time and SWT resources but is necessary in an IDE world where we must not arbitrarily cause plug-in loading.

Field Summary

Fields inherited from class org.eclipse.e4.ui.internal.workbench.swt.AbstractPartRenderer

context, modelService, OWNING_ME

Constructor Summary

Constructors

Constructor	Description
LazyStackRenderer()

Method Summary

Modifier and Type	Method	Description
void	childRendered(MElementContainer<MUIElement> parentElement, MUIElement element)
void	contextDisposed(IEventBroker eventBroker)
protected void	createTab(MElementContainer<MUIElement> me, MUIElement part)	This method is necessary to allow the parent container to show affordance (i.e. tabs) for child elements -without- creating the actual part
void	hideChild(MElementContainer<MUIElement> parentElement, MUIElement child)
void	init(IEventBroker eventBroker)
void	postProcess(MUIElement element)
void	processContents(MElementContainer<MUIElement> me)
protected void	showTab(MUIElement element)

Methods inherited from class org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer

bindWidget, calcIndex, calcVisibleIndex, disposeWidget, forceFocus, getImage, getImageFromURI, getModelElement, getParentWidget, getToolTip, hookControllerLogic, imageChanged, init, reapplyStyles, requiresFocus, setCSSInfo, styleElement, unbindWidget

Methods inherited from class org.eclipse.e4.ui.internal.workbench.swt.AbstractPartRenderer

activate, createWidget, getContext, getContextForParent, getStyleOverride, getUIContainer, removeGui

Methods inherited from class java.lang.Object

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

Constructor Details

LazyStackRenderer

public LazyStackRenderer()

Method Details

init

public void init(IEventBroker eventBroker)

contextDisposed

public void contextDisposed(IEventBroker eventBroker)

postProcess

public void postProcess(MUIElement element)

Overrides:

postProcess in class org.eclipse.e4.ui.internal.workbench.swt.AbstractPartRenderer

childRendered

public void childRendered(MElementContainer<MUIElement> parentElement,
 MUIElement element)

Overrides:

childRendered in class SWTPartRenderer

hideChild

public void hideChild(MElementContainer<MUIElement> parentElement,
 MUIElement child)

Overrides:

hideChild in class org.eclipse.e4.ui.internal.workbench.swt.AbstractPartRenderer

processContents

public void processContents(MElementContainer<MUIElement> me)

Overrides:

processContents in class SWTPartRenderer

createTab

protected void createTab(MElementContainer<MUIElement> me,
 MUIElement part)

This method is necessary to allow the parent container to show affordance (i.e. tabs) for child elements -without- creating the actual part

Parameters:

me - The parent model element

part - The child to show the affordance for

showTab

protected void showTab(MUIElement element)