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Java Source Code / Java Documentation » Ajax » GWT » com.google.gwt.user.client.ui

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

com.google.gwt.user.client.ui .WidgetCollection

WidgetCollection
public class WidgetCollection (Code)
	A simple collection of widgets to be used by com.google.gwt.user.client.ui.Panel panels and com.google.gwt.user.client.ui.Composite composites . The main purpose of this specialized collection is to implement java.util.Iterator.remove in a way that delegates removal to its panel. This makes it much easier for the panel to implement an com.google.gwt.user.client.ui.HasWidgets.iterator iterator that supports removal of widgets.

Constructor Summary
public	WidgetCollection(HasWidgets parent) Constructs a new widget collection.

Method Summary
public void	add(Widget w) Adds a widget to the end of this collection.
public boolean	contains(Widget w) Determines whether a given widget is contained in this collection.
public Widget	get(int index) Gets the widget at the given index.
public int	indexOf(Widget w) Gets the index of the specified index.
public void	insert(Widget w, int beforeIndex) Inserts a widget before the specified index.
public Iterator<Widget>	iterator() Gets an iterator on this widget collection.
public void	remove(int index) Removes the widget at the specified index.
public void	remove(Widget w) Removes the specified widget.
public int	size() Gets the number of widgets in this collection.

Constructor Detail

WidgetCollection
public WidgetCollection(HasWidgets parent)(Code)
	Constructs a new widget collection. Parameters: parent - the container whose HasWidgets.remove(Widget) will bedelegated to by the iterator's Iterator.remove method.

Method Detail

add
public void add(Widget w)(Code)
	Adds a widget to the end of this collection. Parameters: w - the widget to be added

contains
public boolean contains(Widget w)(Code)
	Determines whether a given widget is contained in this collection. Parameters: w - the widget to be searched for `true` if the widget is present

get
public Widget get(int index)(Code)
	Gets the widget at the given index. Parameters: index - the index to be retrieved the widget at the specified index throws: IndexOutOfBoundsException - if the index is out of range

indexOf
public int indexOf(Widget w)(Code)
	Gets the index of the specified index. Parameters: w - the widget to be found the index of the specified widget, or `-1` if it isnot found

insert
public void insert(Widget w, int beforeIndex)(Code)
	Inserts a widget before the specified index. Parameters: w - the widget to be inserted Parameters: beforeIndex - the index before which the widget will be inserted throws: IndexOutOfBoundsException - if `beforeIndex` is out ofrange

iterator
public Iterator<Widget> iterator()(Code)
	Gets an iterator on this widget collection. This iterator is guaranteed to implement remove() in terms of its containing HasWidgets . an iterator

remove
public void remove(int index)(Code)
	Removes the widget at the specified index. Parameters: index - the index of the widget to be removed throws: IndexOutOfBoundsException - if `index` is out of range

remove
public void remove(Widget w)(Code)
	Removes the specified widget. Parameters: w - the widget to be removed throws: NoSuchElementException - if the widget is not present

size
public int size()(Code)
	Gets the number of widgets in this collection. the number of widgets

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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