/*

* Copyright (c) 1996, 2007, Oracle and/or its affiliates. All rights reserved.

* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.

*

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*/

package java.awt.peer;

import java.awt.Adjustable;

import java.awt.ScrollPane;

import java.awt.ScrollPaneAdjustable;

/**

* The peer interface for {@link ScrollPane}.

*

* The peer interfaces are intended only for use in porting

* the AWT. They are not intended for use by application

* developers, and developers should not implement peers

* nor invoke any of the peer methods directly on the peer

* instances.

*/

public interface ScrollPanePeer extends ContainerPeer {

/**

* Returns the height of the horizontal scroll bar.

*

* @return the height of the horizontal scroll bar

*

* @see ScrollPane#getHScrollbarHeight()

*/

int getHScrollbarHeight();

/**

* Returns the width of the vertical scroll bar.

*

* @return the width of the vertical scroll bar

*

* @see ScrollPane#getVScrollbarWidth()

*/

int getVScrollbarWidth();

/**

* Sets the scroll position of the child.

*

* @param x the X coordinate of the scroll position

* @param y the Y coordinate of the scroll position

*

* @see ScrollPane#setScrollPosition(int, int)

*/

void setScrollPosition(int x, int y);

/**

* Called when the child component changes its size.

*

* @param w the new width of the child component

* @param h the new height of the child component

*

* @see ScrollPane#layout()

*/

void childResized(int w, int h);

/**

* Sets the unit increment of one of the scroll pane's adjustables.

*

* @param adj the scroll pane adjustable object

* @param u the unit increment

*

* @see ScrollPaneAdjustable#setUnitIncrement(int)

*/

void setUnitIncrement(Adjustable adj, int u);

/**

* Sets the value for one of the scroll pane's adjustables.

*

* @param adj the scroll pane adjustable object

* @param v the value to set

*/

void setValue(Adjustable adj, int v);

}