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com.google.gwt.user.client.ui
Class NativeVerticalScrollbar

java.lang.Object
  extended by com.google.gwt.user.client.ui.UIObject
      extended by com.google.gwt.user.client.ui.Widget
          extended by com.google.gwt.user.client.ui.AbstractNativeScrollbar
              extended by com.google.gwt.user.client.ui.NativeVerticalScrollbar
All Implemented Interfaces:
HasScrollHandlers, HasAttachHandlers, HasHandlers, EventListener, HasVerticalScrolling, HasVisibility, IsWidget, VerticalScrollbar
public class NativeVerticalScrollbar
extends AbstractNativeScrollbar
implements VerticalScrollbar

A vertical scrollbar implemented using the browsers native scrollbar.

Nested Class Summary
(package private) static interface NativeVerticalScrollbar.NativeVerticalScrollbarUiBinder
           
static interface NativeVerticalScrollbar.Resources
          A ClientBundle of resources used by this widget.
static interface NativeVerticalScrollbar.ResourcesTransparant
          A variation of NativeVerticalScrollbar.Resources that renders the scrollbar semi-transparent until it is hovered.
static interface NativeVerticalScrollbar.Style
          Styles used by this widget.
static interface NativeVerticalScrollbar.StyleTransparant
          A variation of NativeVerticalScrollbar.Style that renders the scrollbar semi-transparent until it is hovered.
 
Nested classes/interfaces inherited from class com.google.gwt.user.client.ui.UIObject
UIObject.DebugIdImpl, UIObject.DebugIdImplEnabled
 
Field Summary
(package private)  Element contentDiv
          The div inside the scrollable div that forces scrollbars to appear.
(package private)  Element scrollable
          The scrollable div used to create a scrollbar.
 
Fields inherited from class com.google.gwt.user.client.ui.Widget
eventsToSink
 
Fields inherited from class com.google.gwt.user.client.ui.UIObject
DEBUG_ID_PREFIX, MISSING_ELEMENT_ERROR, SETELEMENT_TWICE_ERROR
 
Constructor Summary
NativeVerticalScrollbar()
          Construct a new NativeVerticalScrollbar.
NativeVerticalScrollbar(NativeVerticalScrollbar.Resources resources)
          Construct a new NativeVerticalScrollbar.
 
Method Summary
 int getMaximumVerticalScrollPosition()
          Get the maximum position of vertical scrolling.
 int getMinimumVerticalScrollPosition()
          Get the minimum position of vertical scrolling.
protected  int getNativeWidth()
          Get the width of the scrollbar.
protected  Element getScrollableElement()
          Get the scrollable element.
 int getScrollHeight()
          Get the height in pixels of the scrollable content that the scrollbar controls.
 int getVerticalScrollPosition()
          Gets the vertical scroll position.
 void setScrollHeight(int height)
          Set the height in pixels of the scrollable content that the scrollbar controls.
 void setVerticalScrollPosition(int position)
          Sets the vertical scroll position.
 
Methods inherited from class com.google.gwt.user.client.ui.AbstractNativeScrollbar
addScrollHandler, getNativeScrollbarHeight, getNativeScrollbarWidth, isScrollbarLeftAlignedInRtl, onAttach, onDetach
 
Methods inherited from class com.google.gwt.user.client.ui.Widget
addAttachHandler, addBitlessDomHandler, addDomHandler, addHandler, asWidget, asWidgetOrNull, createHandlerManager, delegateEvent, doAttachChildren, doDetachChildren, ensureHandlers, fireEvent, getHandlerCount, getHandlerManager, getLayoutData, getParent, isAttached, isOrWasAttached, onBrowserEvent, onLoad, onUnload, removeFromParent, replaceElement, setLayoutData, setParent, 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
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface com.google.gwt.event.dom.client.HasScrollHandlers
addScrollHandler
 
Methods inherited from interface com.google.gwt.event.shared.HasHandlers
fireEvent
 
Methods inherited from interface com.google.gwt.user.client.ui.IsWidget
asWidget
 

Field Detail

contentDiv

@UiField
Element contentDiv
The div inside the scrollable div that forces scrollbars to appear.

scrollable

@UiField
Element scrollable
The scrollable div used to create a scrollbar.

Constructor Detail

NativeVerticalScrollbar

public NativeVerticalScrollbar()
Construct a new NativeVerticalScrollbar.

NativeVerticalScrollbar

public NativeVerticalScrollbar(NativeVerticalScrollbar.Resources resources)
Construct a new NativeVerticalScrollbar.

Parameters:
resources - the resources used by this widget
Method Detail

getMaximumVerticalScrollPosition

public int getMaximumVerticalScrollPosition()
Description copied from interface: HasVerticalScrolling
Get the maximum position of vertical scrolling. This is usually the scrollHeight - clientHeight.

Specified by:
getMaximumVerticalScrollPosition in interface HasVerticalScrolling
Returns:
the maximum vertical scroll position

getMinimumVerticalScrollPosition

public int getMinimumVerticalScrollPosition()
Description copied from interface: HasVerticalScrolling
Get the minimum position of vertical scrolling.

Specified by:
getMinimumVerticalScrollPosition in interface HasVerticalScrolling
Returns:
the minimum vertical scroll position

getScrollHeight

public int getScrollHeight()
Get the height in pixels of the scrollable content that the scrollbar controls.

This is not the same as the maximum scroll top position. The maximum scroll position equals the scrollHeight- offsetHeight;

Specified by:
getScrollHeight in interface VerticalScrollbar
Returns:
the scroll height
See Also:
setScrollHeight(int)

getVerticalScrollPosition

public int getVerticalScrollPosition()
Description copied from interface: HasVerticalScrolling
Gets the vertical scroll position.

Specified by:
getVerticalScrollPosition in interface HasVerticalScrolling
Returns:
the vertical scroll position, in pixels

setScrollHeight

public void setScrollHeight(int height)
Set the height in pixels of the scrollable content that the scrollbar controls.

This is not the same as the maximum scroll top position. The maximum scroll position equals the scrollHeight- offsetHeight;

Specified by:
setScrollHeight in interface VerticalScrollbar
Parameters:
height - the size height pixels

setVerticalScrollPosition

public void setVerticalScrollPosition(int position)
Description copied from interface: HasVerticalScrolling
Sets the vertical scroll position.

Specified by:
setVerticalScrollPosition in interface HasVerticalScrolling
Parameters:
position - the new vertical scroll position, in pixels

getNativeWidth

protected int getNativeWidth()
Get the width of the scrollbar.

Returns:
the width of the scrollbar in pixels

getScrollableElement

protected Element getScrollableElement()
Description copied from class: AbstractNativeScrollbar
Get the scrollable element.

Specified by:
getScrollableElement in class AbstractNativeScrollbar
Returns:
the scrollable element
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