org.xwiki.gwt.user.client.ui
Class ListBox<T>

java.lang.Object
  com.google.gwt.user.client.ui.UIObject
      com.google.gwt.user.client.ui.Widget
          com.google.gwt.user.client.ui.Composite
              org.xwiki.gwt.user.client.ui.ListBox<T>

Type Parameters:

T - the data type that can be attached to list items

All Implemented Interfaces:

com.google.gwt.event.dom.client.ClickHandler, com.google.gwt.event.dom.client.HasAllKeyHandlers, com.google.gwt.event.dom.client.HasDoubleClickHandlers, com.google.gwt.event.dom.client.HasKeyDownHandlers, com.google.gwt.event.dom.client.HasKeyPressHandlers, com.google.gwt.event.dom.client.HasKeyUpHandlers, com.google.gwt.event.logical.shared.HasAttachHandlers, com.google.gwt.event.logical.shared.HasSelectionHandlers<ListItem<T>>, com.google.gwt.event.shared.EventHandler, com.google.gwt.event.shared.HasHandlers, com.google.gwt.user.client.EventListener, com.google.gwt.user.client.ui.Focusable, com.google.gwt.user.client.ui.HasVisibility, com.google.gwt.user.client.ui.IsRenderable, com.google.gwt.user.client.ui.IsWidget

public class ListBox<T>
extends com.google.gwt.user.client.ui.Composite
implements com.google.gwt.event.logical.shared.HasSelectionHandlers<ListItem<T>>, com.google.gwt.event.dom.client.HasDoubleClickHandlers, com.google.gwt.event.dom.client.HasAllKeyHandlers, com.google.gwt.event.dom.client.ClickHandler, com.google.gwt.user.client.ui.Focusable

Displays a list of items allowing us to select one using the mouse or the keyboard.

Version:

$Id: a2bdf43bf958fbecfedde25a7e97eff810c769bb $

Nested Class Summary

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

com.google.gwt.user.client.ui.UIObject.DebugIdImpl, com.google.gwt.user.client.ui.UIObject.DebugIdImplEnabled

Field Summary

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

DEBUG_ID_PREFIX

Constructor Summary

ListBox()
Creates a new list box.

Method Summary

com.google.gwt.event.shared.HandlerRegistration	addDoubleClickHandler(com.google.gwt.event.dom.client.DoubleClickHandler handler)
void	addItem(ListItem<T> item) Adds a new item to the list.
com.google.gwt.event.shared.HandlerRegistration	addKeyDownHandler(com.google.gwt.event.dom.client.KeyDownHandler handler)
com.google.gwt.event.shared.HandlerRegistration	addKeyPressHandler(com.google.gwt.event.dom.client.KeyPressHandler handler)
com.google.gwt.event.shared.HandlerRegistration	addKeyUpHandler(com.google.gwt.event.dom.client.KeyUpHandler handler)
com.google.gwt.event.shared.HandlerRegistration	addSelectionHandler(com.google.gwt.event.logical.shared.SelectionHandler<ListItem<T>> handler)
void	clear() Removes all the items from this list.
ListItem<T>	getItem(int index)
int	getItemCount()
ListItem<T>	getItemForEvent(com.google.gwt.event.dom.client.DomEvent<?> event) Finds the list item that is the target of the specified DOM event.
ListItem<T>	getSelectedItem()
int	getTabIndex()
void	insertItem(ListItem<T> item, int beforeIndex) Inserts an item before the specified position.
void	onClick(com.google.gwt.event.dom.client.ClickEvent event)
void	removeItem(ListItem<T> item) Removes an item from this list.
protected void	selectFirstItem() Selects the first list item if the list is not empty.
protected void	selectLastItem() Selects the last list item if the list of not empty.
protected void	selectNextItem() Selects the next list item with respect to the currently selected item.
protected void	selectPreviousItem() Selects the previous list item with respect to the currently selected item.
void	setAccessKey(char key)
void	setFocus(boolean focused)
void	setSelectedItem(ListItem<T> item) Selects the specified list item.
void	setTabIndex(int index)
protected void	updateSelectedItem(Event event) Updates the selected item based on the native keyboard event that was fired.

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

claimElement, getWidget, initializeClaimedElement, initWidget, isAttached, onAttach, onBrowserEvent, onDetach, render, render, resolvePotentialElement, setWidget

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

addAttachHandler, addBitlessDomHandler, addDomHandler, addHandler, asWidget, asWidgetOrNull, createHandlerManager, delegateEvent, doAttachChildren, doDetachChildren, fireEvent, getHandlerCount, getLayoutData, getParent, isOrWasAttached, onLoad, onUnload, removeFromParent, setLayoutData, sinkEvents

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

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.google.gwt.event.shared.HasHandlers

fireEvent

Constructor Detail

ListBox

public ListBox()

Creates a new list box.

Method Detail

addItem

public void addItem(ListItem<T> item)

Adds a new item to the list.

Parameters:

item - the item to be added

getItem

public ListItem<T> getItem(int index)

Parameters:

index - a valid list item index

Returns:

the list item at the specified index in this list

insertItem

public void insertItem(ListItem<T> item,
                       int beforeIndex)

Inserts an item before the specified position.

Parameters:

item - the item to be inserted

beforeIndex - the index before which to insert the item

removeItem

public void removeItem(ListItem<T> item)

Removes an item from this list.

Parameters:

item - the list item to be removed

clear

public void clear()

Removes all the items from this list.

addSelectionHandler

public com.google.gwt.event.shared.HandlerRegistration addSelectionHandler(com.google.gwt.event.logical.shared.SelectionHandler<ListItem<T>> handler)

Specified by:

addSelectionHandler in interface com.google.gwt.event.logical.shared.HasSelectionHandlers<ListItem<T>>

addDoubleClickHandler

public com.google.gwt.event.shared.HandlerRegistration addDoubleClickHandler(com.google.gwt.event.dom.client.DoubleClickHandler handler)

Specified by:

addDoubleClickHandler in interface com.google.gwt.event.dom.client.HasDoubleClickHandlers

addKeyDownHandler

public com.google.gwt.event.shared.HandlerRegistration addKeyDownHandler(com.google.gwt.event.dom.client.KeyDownHandler handler)

Specified by:

addKeyDownHandler in interface com.google.gwt.event.dom.client.HasKeyDownHandlers

addKeyPressHandler

public com.google.gwt.event.shared.HandlerRegistration addKeyPressHandler(com.google.gwt.event.dom.client.KeyPressHandler handler)

Specified by:

addKeyPressHandler in interface com.google.gwt.event.dom.client.HasKeyPressHandlers

addKeyUpHandler

public com.google.gwt.event.shared.HandlerRegistration addKeyUpHandler(com.google.gwt.event.dom.client.KeyUpHandler handler)

Specified by:

addKeyUpHandler in interface com.google.gwt.event.dom.client.HasKeyUpHandlers

getSelectedItem

public ListItem<T> getSelectedItem()

Returns:

the list item currently selected

setSelectedItem

public void setSelectedItem(ListItem<T> item)

Selects the specified list item.

Parameters:

item - the list item to be selected

onClick

public void onClick(com.google.gwt.event.dom.client.ClickEvent event)

Specified by:

onClick in interface com.google.gwt.event.dom.client.ClickHandler

getItemForEvent

public ListItem<T> getItemForEvent(com.google.gwt.event.dom.client.DomEvent<?> event)

Finds the list item that is the target of the specified DOM event.

Parameters:

event - the DOM event that was fired

Returns:

the target list item if found, null otherwise

updateSelectedItem

protected void updateSelectedItem(Event event)

Updates the selected item based on the native keyboard event that was fired.

Parameters:

event - the native event that was fired

selectPreviousItem

protected void selectPreviousItem()

Selects the previous list item with respect to the currently selected item.

selectNextItem

protected void selectNextItem()

Selects the next list item with respect to the currently selected item.

selectFirstItem

protected void selectFirstItem()

Selects the first list item if the list is not empty.

selectLastItem

protected void selectLastItem()

Selects the last list item if the list of not empty.

getItemCount

public int getItemCount()

Returns:

the number of list items in this list box

getTabIndex

public int getTabIndex()

Specified by:

getTabIndex in interface com.google.gwt.user.client.ui.Focusable

setTabIndex

public void setTabIndex(int index)

Specified by:

setTabIndex in interface com.google.gwt.user.client.ui.Focusable

setFocus

public void setFocus(boolean focused)

Specified by:

setFocus in interface com.google.gwt.user.client.ui.Focusable

setAccessKey

public void setAccessKey(char key)

Specified by:

setAccessKey in interface com.google.gwt.user.client.ui.Focusable