llvm-gcc-4.0/libjava/javax/swing/plaf/TabbedPaneUI.java

/* TabbedPaneUI.java --
   Copyright (C) 2002, 2003, 2004  Free Software Foundation, Inc.

This file is part of GNU Classpath.

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it under the terms of the GNU General Public License as published by
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General Public License for more details.

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02111-1307 USA.

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As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
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package javax.swing.plaf;

import java.awt.Rectangle;

import javax.swing.JTabbedPane;

/**
 * An abstract base class for delegates that implement the pluggable
 * look and feel for a <code>JTabbedPane</code>.
 *
 * @see javax.swing.JTabbedPane
 *
 * @author Andrew Selkirk (aselkirk@sympatico.ca)
 * @author Sascha Brawer (brawer@dandelis.ch)
 */
public abstract class TabbedPaneUI
  extends ComponentUI
{
  /**
   * Constructs a new <code>TabbedPaneUI</code>.
   */
  public TabbedPaneUI()
  {
  }
  
  
  /**
   * Determines which tab lies at a given position.
   *
   * @param pane the <code>JTabbedPane</code> for which this
   *        delegate object provides the user interface.
   *
   * @param x the horizontal position, where zero is the left
   *        edge of <code>pane</code>.
   *
   * @param y the vertical position, where zero is the top
   *        edge of <code>pane</code>.
   *
   * @return the zero-based index of the tab, or -1 if no
   *         tab is at the specified position.
   */
  public abstract int tabForCoordinate(JTabbedPane pane,
                                       int x, int y);
  

  /**
   * Calculates the bounding box of a tab.
   *
   * @param pane the <code>JTabbedPane</code> for which this
   *        delegate object provides the user interface.
   *
   * @param index the index of the tab, which must be an integer
   *        in the range <code>[0 .. pane.getTabCount() - 1]</code>.
   *
   * @return the bounding box of the <code>index</code>-th tab,
   *         in the coordinate system of <code>pane</code>.
   */
  public abstract Rectangle getTabBounds(JTabbedPane pane, int index);


  /**
   * Determines how many runs are used to display tabs.
   *
   * @param pane the <code>JTabbedPane</code> for which this
   *        delegate object provides the user interface.
   *
   * @return the number of tab runs.
   *
   * @see javax.swing.JTabbedPane#getTabRunCount()
   */
  public abstract int getTabRunCount(JTabbedPane pane);
}