com.google.gwt.user.client.ui

Class RichTextArea

java.lang.Object

com.google.gwt.user.client.ui.UIObject

com.google.gwt.user.client.ui.Widget

com.google.gwt.user.client.ui.FocusWidget

com.google.gwt.user.client.ui.RichTextArea

All Implemented Interfaces:

HasAllDragAndDropHandlers, HasAllFocusHandlers, HasAllGestureHandlers, HasAllKeyHandlers, HasAllMouseHandlers, HasAllTouchHandlers, HasBlurHandlers, HasClickHandlers, HasDoubleClickHandlers, HasDragEndHandlers, HasDragEnterHandlers, HasDragHandlers, HasDragLeaveHandlers, HasDragOverHandlers, HasDragStartHandlers, HasDropHandlers, HasFocusHandlers, HasGestureChangeHandlers, HasGestureEndHandlers, HasGestureStartHandlers, HasKeyDownHandlers, HasKeyPressHandlers, HasKeyUpHandlers, HasMouseDownHandlers, HasMouseMoveHandlers, HasMouseOutHandlers, HasMouseOverHandlers, HasMouseUpHandlers, HasMouseWheelHandlers, HasTouchCancelHandlers, HasTouchEndHandlers, HasTouchMoveHandlers, HasTouchStartHandlers, HasAttachHandlers, HasInitializeHandlers, HasHandlers, HasSafeHtml, EventListener, Focusable, HasEnabled, HasFocus, HasHTML, HasText, HasVisibility, IsWidget, SourcesClickEvents, SourcesFocusEvents, SourcesKeyboardEvents, SourcesMouseEvents

public class RichTextArea
extends FocusWidget
implements HasHTML, HasInitializeHandlers, HasSafeHtml

A rich text editor that allows complex styling and formatting. Because some browsers do not support rich text editing, and others support only a limited subset of functionality, there are two formatter interfaces, accessed via getBasicFormatter() and getExtendedFormatter() . A browser that does not support rich text editing at all will return null for both of these, while one that supports only the basic functionality will return null for the latter.

CSS Style Rules

.gwt-RichTextArea

Applied to the rich text element.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	RichTextArea.BasicFormatter Deprecated. use RichTextArea.Formatter instead
static interface	RichTextArea.ExtendedFormatter Deprecated. use RichTextArea.Formatter instead
static class	RichTextArea.FontSize Font size enumeration.
static interface	RichTextArea.Formatter This interface is used to access full formatting options, when available.
static class	RichTextArea.Justification Justification enumeration.

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

Constructors

Constructor and Description
RichTextArea() Creates a new, blank RichTextArea object with no stylesheet.

Method Summary

Methods

Modifier and Type	Method and Description
HandlerRegistration	addInitializeHandler(InitializeHandler handler) Adds an InitializeEvent handler.
RichTextArea.BasicFormatter	getBasicFormatter() Deprecated. use getFormatter() instead
RichTextArea.ExtendedFormatter	getExtendedFormatter() Deprecated. use getFormatter() instead
RichTextArea.Formatter	getFormatter() Gets the rich text formatting interface.
String	getHTML() Gets this object's contents as HTML.
String	getText() Gets this object's text.
boolean	isEnabled() Gets whether this widget is enabled.
protected void	onAttach() This method is called when a widget is attached to the browser's document.
protected void	onDetach() This method is called when a widget is detached from the browser's document.
void	setEnabled(boolean enabled) Sets whether this widget is enabled.
void	setFocus(boolean focused) Explicitly focus/unfocus this widget.
void	setHTML(SafeHtml html) Sets this object's contents via known-safe HTML.
void	setHTML(String html) Sets this object's contents via HTML.
void	setText(String text) Sets this object's text.

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

addBlurHandler, addClickHandler, addClickListener, addDoubleClickHandler, addDragEndHandler, addDragEnterHandler, addDragHandler, addDragLeaveHandler, addDragOverHandler, addDragStartHandler, addDropHandler, addFocusHandler, addFocusListener, addGestureChangeHandler, addGestureEndHandler, addGestureStartHandler, addKeyboardListener, addKeyDownHandler, addKeyPressHandler, addKeyUpHandler, addMouseDownHandler, addMouseListener, addMouseMoveHandler, addMouseOutHandler, addMouseOverHandler, addMouseUpHandler, addMouseWheelHandler, addMouseWheelListener, addTouchCancelHandler, addTouchEndHandler, addTouchMoveHandler, addTouchStartHandler, getFocusImpl, getTabIndex, removeClickListener, removeFocusListener, removeKeyboardListener, removeMouseListener, removeMouseWheelListener, setAccessKey, setTabIndex

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, isAttached, isOrWasAttached, onBrowserEvent, onLoad, onUnload, removeFromParent, setLayoutData, sinkEvents, unsinkEvents

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, resolvePotentialElement, setElement, setElement, setHeight, setPixelSize, setSize, setStyleDependentName, setStyleName, setStyleName, setStyleName, setStyleName, setStylePrimaryName, setStylePrimaryName, setTitle, setVisible, setVisible, setWidth, sinkBitlessEvent, toString

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode

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

fireEvent

Constructor Detail

RichTextArea

public RichTextArea()

Creates a new, blank RichTextArea object with no stylesheet.

Method Detail

addInitializeHandler

public HandlerRegistration addInitializeHandler(InitializeHandler handler)

Description copied from interface: HasInitializeHandlers

Adds an InitializeEvent handler.

Specified by:

addInitializeHandler in interface HasInitializeHandlers

Parameters:

handler - the handler

Returns:

the registration for the event

getBasicFormatter

@Deprecated
public RichTextArea.BasicFormatter getBasicFormatter()

Deprecated. use getFormatter() instead

Gets the basic rich text formatting interface. Note that formatting can only be done when the RichTextArea is attached, visible on the page, and has been focused by the user.

Returns:

null if basic formatting is not supported

getExtendedFormatter

@Deprecated
public RichTextArea.ExtendedFormatter getExtendedFormatter()

Deprecated. use getFormatter() instead

Gets the full rich text formatting interface. Note that formatting can only be done when the RichTextArea is attached, visible on the page, and has been focused by the user.

Returns:

null if full formatting is not supported

getFormatter

public RichTextArea.Formatter getFormatter()

Gets the rich text formatting interface. Note that formatting can only be done when the RichTextArea is attached, visible on the page, and has been focused by the user.

Returns:

null if full formatting is not supported

getHTML

public String getHTML()

Description copied from interface: HasHTML

Gets this object's contents as HTML.

Specified by:

getHTML in interface HasHTML

Returns:

the object's HTML

getText

public String getText()

Description copied from interface: HasText

Gets this object's text.

Specified by:

getText in interface HasText

Returns:

the object's text

isEnabled

public boolean isEnabled()

Description copied from class: FocusWidget

Gets whether this widget is enabled.

Specified by:

isEnabled in interface HasEnabled

Overrides:

isEnabled in class FocusWidget

Returns:

true if the widget is enabled

setEnabled

public void setEnabled(boolean enabled)

Description copied from class: FocusWidget

Sets whether this widget is enabled.

Specified by:

setEnabled in interface HasEnabled

Overrides:

setEnabled in class FocusWidget

Parameters:

enabled - true to enable the widget, false to disable it

setFocus

public void setFocus(boolean focused)

Description copied from interface: Focusable

Explicitly focus/unfocus this widget. Only one widget can have focus at a time, and the widget that does will receive all keyboard events.

Specified by:

setFocus in interface Focusable

Overrides:

setFocus in class FocusWidget

Parameters:

focused - whether this widget should take focus or release it

setHTML

public void setHTML(String html)

Description copied from interface: HasHTML

Sets this object's contents via HTML. Use care when setting an object's HTML; it is an easy way to expose script-based security problems. Consider using HasText.setText(String) whenever possible.

Specified by:

setHTML in interface HasHTML

Parameters:

html - the object's new HTML

setHTML

public void setHTML(SafeHtml html)

Description copied from interface: HasSafeHtml

Sets this object's contents via known-safe HTML.

The object will behave exactly the same as when a widget's HasHTML.setHTML(String) method is invoked; however the SafeHtml passed to this method observes the contract that it can be used in an HTML context without causing unsafe script execution. Thus, unlike HasHTML.setHTML(String), using this method cannot result in Cross-Site Scripting security vulnerabilities.

Specified by:

setHTML in interface HasSafeHtml

Parameters:

html - the object's new HTML, represented as a SafeHtml object

setText

public void setText(String text)

Description copied from interface: HasText

Sets this object's text.

Specified by:

setText in interface HasText

Parameters:

text - the object's new text

onAttach

protected void onAttach()

Description copied from class: Widget

This method is called when a widget is attached to the browser's document. To receive notification after a Widget has been added to the document, override the Widget.onLoad() method or use Widget.addAttachHandler(com.google.gwt.event.logical.shared.AttachEvent.Handler).

It is strongly recommended that you override Widget.onLoad() or Widget.doAttachChildren() instead of this method to avoid inconsistencies between logical and physical attachment states.

Subclasses that override this method must call super.onAttach() to ensure that the Widget has been attached to its underlying Element.

Overrides:

onAttach in class FocusWidget

See Also:

Widget.onLoad(), Widget.doAttachChildren()

onDetach

protected void onDetach()

Description copied from class: Widget

This method is called when a widget is detached from the browser's document. To receive notification before a Widget is removed from the document, override the Widget.onUnload() method or use Widget.addAttachHandler(com.google.gwt.event.logical.shared.AttachEvent.Handler).

It is strongly recommended that you override Widget.onUnload() or Widget.doDetachChildren() instead of this method to avoid inconsistencies between logical and physical attachment states.

Subclasses that override this method must call super.onDetach() to ensure that the Widget has been detached from the underlying Element. Failure to do so will result in application memory leaks due to circular references between DOM Elements and JavaScript objects.

Overrides:

onDetach in class Widget

See Also:

Widget.onUnload(), Widget.doDetachChildren()