|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectcom.google.gwt.user.client.ui.UIObject
com.google.gwt.user.client.ui.Widget
public class Widget
The base class for the majority of user-interface objects. Widget adds
support for receiving events from the browser and being added directly to
panels
.
Constructor Summary | |
---|---|
Widget()
|
Method Summary | |
---|---|
Widget |
getParent()
Gets this widget's parent panel. |
boolean |
isAttached()
Determines whether this widget is currently attached to the browser's document (i.e., there is an unbroken chain of widgets between this widget and the underlying browser document). |
protected void |
onAttach()
This method is called when a widget is attached to the browser's document. |
void |
onBrowserEvent(Event event)
Fired whenever a browser event is received. |
protected void |
onDetach()
This method is called when a widget is detached from the browser's document. |
protected void |
onLoad()
This method is called when the widget becomes attached to the browser's document. |
void |
removeFromParent()
Removes this widget from its parent widget. |
Methods inherited from class com.google.gwt.user.client.ui.UIObject |
---|
addStyleName, getAbsoluteLeft, getAbsoluteTop, getElement, getOffsetHeight, getOffsetWidth, getStyleName, getTitle, isVisible, isVisible, removeStyleName, setElement, setHeight, setPixelSize, setSize, setStyleName, setStyleName, setTitle, setVisible, setVisible, setWidth, sinkEvents, toString, unsinkEvents |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
---|
public Widget()
Method Detail |
---|
public Widget getParent()
public boolean isAttached()
true
if the widget is attachedpublic void onBrowserEvent(Event event)
EventListener
onBrowserEvent
in interface EventListener
event
- the event receivedpublic void removeFromParent()
java.lang.IllegalStateException
- if this widget's parent does not support
removal (e.g. Composite
)protected void onAttach()
Panel
. To receive
notification when a widget is attached to the document, override the
onLoad()
method.
protected void onDetach()
Panel
.
protected void onLoad()
|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |