com.google.gwt.user.client.ui
Class LazyPanel

java.lang.Object
  com.google.gwt.user.client.ui.UIObject
      com.google.gwt.user.client.ui.Widget
          com.google.gwt.user.client.ui.Panel
              com.google.gwt.user.client.ui.SimplePanel
                  com.google.gwt.user.client.ui.LazyPanel

All Implemented Interfaces:

HasHandlers, EventListener, HasWidgets, java.lang.Iterable<Widget>

public abstract class LazyPanel
extends SimplePanel

Convenience class to help lazy loading. The bulk of a LazyPanel is not instantiated until setVisible(boolean)(true) or ensureWidget() is called.

Example

Nested Class Summary

Nested classes/interfaces inherited from class com.google.gwt.user.client.ui.UIObject

UIObject.DebugIdImpl, UIObject.DebugIdImplEnabled

Field Summary

Fields inherited from class com.google.gwt.user.client.ui.UIObject

DEBUG_ID_PREFIX

Constructor Summary

LazyPanel()

Method Summary

void	ensureWidget() Ensures that the widget has been created by calling createWidget() if SimplePanel.getWidget() returns null.
void	setVisible(boolean visible) Sets whether this object is visible.

Methods inherited from class com.google.gwt.user.client.ui.SimplePanel

add, getWidget, iterator, remove, setWidget

Methods inherited from class com.google.gwt.user.client.ui.Panel

clear

Methods inherited from class com.google.gwt.user.client.ui.Widget

fireEvent, getLayoutData, getParent, isAttached, onBrowserEvent, removeFromParent, setLayoutData, sinkEvents

Methods inherited from class com.google.gwt.user.client.ui.UIObject

addStyleDependentName, addStyleName, ensureDebugId, ensureDebugId, getAbsoluteLeft, getAbsoluteTop, getElement, getOffsetHeight, getOffsetWidth, getStyleName, getStylePrimaryName, getTitle, isVisible, isVisible, removeStyleDependentName, removeStyleName, setHeight, setPixelSize, setSize, setStyleDependentName, setStyleName, setStyleName, setStylePrimaryName, setTitle, setVisible, setWidth, toString, unsinkEvents

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

LazyPanel

public LazyPanel()

Method Detail

ensureWidget

public void ensureWidget()

Ensures that the widget has been created by calling createWidget() if SimplePanel.getWidget() returns null. Typically it is not necessary to call this directly, as it is called as a side effect of a setVisible(true) call.

setVisible

public void setVisible(boolean visible)

Description copied from class: UIObject

Sets whether this object is visible.

Overrides:

setVisible in class UIObject

Parameters:

visible - true to show the object, false to hide it