com.google.gwt.user.client.ui

Class ScrollImpl

java.lang.Object

com.google.gwt.user.client.ui.ScrollImpl

Direct Known Subclasses:

ScrollImpl.ScrollImplTrident

class ScrollImpl
extends java.lang.Object

Implementation of scrolling behavior.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
(package private) static class	ScrollImpl.ScrollImplTrident IE does not fire a scroll event when the scrollable element or the container is resized, so we synthesize one as needed.

Constructor Summary

Constructors

Constructor and Description
ScrollImpl()

Method Summary

Modifier and Type	Method and Description
(package private) static ScrollImpl	get() Get the singleton instance of ScrollImpl.
int	getMaximumHorizontalScrollPosition(Element scrollable) Get the maximum horizontal scroll position.
int	getMinimumHorizontalScrollPosition(Element scrollable) Get the minimum horizontal scroll position.
void	initialize(Element scrollable, Element container) Initialize a scrollable element.
boolean	isRtl(Element scrollable) Check if the specified element has an RTL direction.

Methods inherited from class java.lang.Object

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

Constructor Detail

ScrollImpl

ScrollImpl()

Method Detail

get

static ScrollImpl get()

Get the singleton instance of ScrollImpl.

getMaximumHorizontalScrollPosition

public int getMaximumHorizontalScrollPosition(Element scrollable)

Get the maximum horizontal scroll position.

Parameters:

scrollable - the scrollable element

Returns:

the maximum scroll position

getMinimumHorizontalScrollPosition

public int getMinimumHorizontalScrollPosition(Element scrollable)

Get the minimum horizontal scroll position.

Parameters:

scrollable - the scrollable element

Returns:

the minimum scroll position

initialize

public void initialize(Element scrollable,
                       Element container)

Initialize a scrollable element.

Parameters:

scrollable - the scrollable element

container - the container

isRtl

public boolean isRtl(Element scrollable)

Check if the specified element has an RTL direction. We can't base this on the current locale because the user can modify the direction at the DOM level.

Parameters:

scrollable - the scrollable element

Returns:

true if the direction is RTL, false if LTR