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

    Methods
    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