com.google.gwt.user.cellview.client

Class CellBasedWidgetImpl

java.lang.Object

com.google.gwt.user.cellview.client.CellBasedWidgetImpl

Direct Known Subclasses:

CellBasedWidgetImplStandard, CellBasedWidgetImplTrident

abstract class CellBasedWidgetImpl
extends java.lang.Object

Implementation used by various cell based widgets.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) java.util.Set<java.lang.String>	focusableTypes The set of natively focusable elements.

Constructor Summary

Constructors

Constructor and Description
CellBasedWidgetImpl()

Method Summary

Modifier and Type	Method and Description
static CellBasedWidgetImpl	get() Get the singleton instance.
boolean	isFocusable(Element elem) Check if an element is focusable.
void	onBrowserEvent(Widget widget, Event event) Process an event on a target cell.
SafeHtml	processHtml(SafeHtml html) Takes in an html string and processes it, adding support for events.
void	resetFocus(Scheduler.ScheduledCommand command) Reset focus on an element.
protected int	sinkEvent(Widget widget, java.lang.String typeName) Get the event bits to sink for an event type.
void	sinkEvents(Widget widget, java.util.Set<java.lang.String> typeNames) Sink events on the widget.

Methods inherited from class java.lang.Object

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

Field Detail

focusableTypes

final java.util.Set<java.lang.String> focusableTypes

The set of natively focusable elements.

Constructor Detail

CellBasedWidgetImpl

CellBasedWidgetImpl()

Method Detail

get

public static CellBasedWidgetImpl get()

Get the singleton instance.

Returns:

the CellBasedWidgetImpl instance

isFocusable

public boolean isFocusable(Element elem)

Check if an element is focusable. If an element is focusable, the cell widget should not steal focus from it.

Parameters:

elem - the element

Returns:

true if the element is focusable, false if not

onBrowserEvent

public void onBrowserEvent(Widget widget,
                           Event event)

Process an event on a target cell.

Parameters:

widget - the Widget on which the event occurred

event - the event to handle

processHtml

public SafeHtml processHtml(SafeHtml html)

Takes in an html string and processes it, adding support for events.

Parameters:

html - the html string to process

Returns:

the processed html string

resetFocus

public void resetFocus(Scheduler.ScheduledCommand command)

Reset focus on an element.

Parameters:

command - the command to execute when resetting focus

sinkEvents

public final void sinkEvents(Widget widget,
                             java.util.Set<java.lang.String> typeNames)

Sink events on the widget.

Parameters:

widget - the Widget that will handle the events

typeNames - the names of the events to sink

sinkEvent

protected int sinkEvent(Widget widget,
                        java.lang.String typeName)

Get the event bits to sink for an event type.

Parameters:

widget - the Widget that will handle the events

typeName - the name of the event to sink

Returns:

the event bits to sink, or -1 if no events to sink