mirror of git://gcc.gnu.org/git/gcc.git
645 lines
18 KiB
Java
645 lines
18 KiB
Java
/* DefaultDesktopManager.java --
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Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.swing;
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import java.awt.Component;
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import java.awt.Container;
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import java.awt.Dimension;
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import java.awt.Insets;
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import java.awt.Rectangle;
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import java.beans.PropertyVetoException;
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import java.io.Serializable;
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import javax.swing.JInternalFrame.JDesktopIcon;
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/**
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* The default implementation of DesktopManager for
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* Swing. It implements the basic beaviours for JInternalFrames in arbitrary
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* parents. The methods provided by the class are not meant to be called by
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* the user, instead, the JInternalFrame methods will call these methods.
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*/
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public class DefaultDesktopManager implements DesktopManager, Serializable
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{
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/** DOCUMENT ME! */
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private static final long serialVersionUID = 4657624909838017887L;
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/** The property change event fired when the wasIcon property changes. */
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static final String WAS_ICON_ONCE_PROPERTY = "wasIconOnce";
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/**
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* The method of dragging used by the JDesktopPane that parents the
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* JInternalFrame that is being dragged.
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*/
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private int currentDragMode = 0;
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/**
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* The cache of the bounds used to draw the outline rectangle when
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* OUTLINE_DRAG_MODE is used.
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*/
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private transient Rectangle dragCache = new Rectangle();
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/**
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* A cached JDesktopPane that is stored when the JInternalFrame is initially
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* dragged.
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*/
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private transient Container pane;
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/**
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* An array of Rectangles that holds the bounds of the JDesktopIcons in the
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* JDesktopPane when looking for where to place a new icon.
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*/
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private transient Rectangle[] iconRects;
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/**
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* This creates a new DefaultDesktopManager object.
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*/
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public DefaultDesktopManager()
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{
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// Nothing to do here.
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}
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/**
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* This method is not normally called since the user will typically add the
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* JInternalFrame to a Container. If this is called, it will try to
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* determine the parent of the JInternalFrame and remove any icon that
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* represents this JInternalFrame and add this JInternalFrame.
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*
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* @param frame The JInternalFrame to open.
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*/
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public void openFrame(JInternalFrame frame)
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{
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Container c = frame.getParent();
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if (c == null)
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c = frame.getDesktopIcon().getParent();
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if (c == null)
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return;
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c.remove(frame.getDesktopIcon());
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c.add(frame);
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frame.setVisible(true);
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}
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/**
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* This method removes the JInternalFrame and JDesktopIcon (if one is
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* present) from their parents.
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*
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* @param frame The JInternalFrame to close.
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*/
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public void closeFrame(JInternalFrame frame)
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{
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Container c = frame.getParent();
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if (c != null)
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{
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if (frame.isIcon())
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c.remove(frame.getDesktopIcon());
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else
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c.remove(frame);
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c.repaint();
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}
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}
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/**
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* This method resizes the JInternalFrame to match its parent's bounds.
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*
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* @param frame The JInternalFrame to maximize.
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*/
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public void maximizeFrame(JInternalFrame frame)
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{
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// Can't maximize from iconified state.
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// It can only return to maximized state, but that would fall under
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// deiconify.
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if (frame.isIcon())
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return;
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frame.setNormalBounds(frame.getBounds());
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Container p = frame.getParent();
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if (p != null)
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{
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Rectangle pBounds = p.getBounds();
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Insets insets = p.getInsets();
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pBounds.width -= insets.left + insets.right;
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pBounds.height -= insets.top + insets.bottom;
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setBoundsForFrame(frame, 0, 0, pBounds.width, pBounds.height);
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}
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if (p instanceof JDesktopPane)
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((JDesktopPane) p).setSelectedFrame(frame);
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else
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{
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try
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{
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frame.setSelected(true);
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}
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catch (PropertyVetoException e)
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{
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// Do nothing.
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}
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}
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}
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/**
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* This method restores the JInternalFrame's bounds to what they were
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* previous to the setMaximize call.
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*
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* @param frame The JInternalFrame to minimize.
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*/
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public void minimizeFrame(JInternalFrame frame)
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{
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Rectangle normalBounds = frame.getNormalBounds();
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JDesktopPane p = frame.getDesktopPane();
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if (p != null)
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p.setSelectedFrame(frame);
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else
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{
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try
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{
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frame.setSelected(true);
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}
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catch (PropertyVetoException e)
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{
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// Do nothing.
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}
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}
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setBoundsForFrame(frame, normalBounds.x, normalBounds.y,
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normalBounds.width, normalBounds.height);
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}
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/**
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* This method removes the JInternalFrame from its parent and adds its
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* JDesktopIcon representation.
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*
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* @param frame The JInternalFrame to iconify.
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*/
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public void iconifyFrame(JInternalFrame frame)
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{
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JDesktopPane p = frame.getDesktopPane();
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JDesktopIcon icon = frame.getDesktopIcon();
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if (p != null && p.getSelectedFrame() == frame)
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p.setSelectedFrame(null);
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else
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{
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try
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{
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frame.setSelected(false);
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}
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catch (PropertyVetoException e)
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{
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// Do nothing if attempt is vetoed.
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}
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}
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Container c = frame.getParent();
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if (!wasIcon(frame))
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{
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Rectangle r = getBoundsForIconOf(frame);
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icon.setBounds(r);
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setWasIcon(frame, Boolean.TRUE);
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}
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if (c != null)
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{
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if (icon != null)
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{
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c.add(icon);
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icon.setVisible(true);
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}
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Rectangle b = frame.getBounds();
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c.remove(frame);
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c.repaint(b.x, b.y, b.width, b.height);
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}
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}
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/**
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* This method removes the JInternalFrame's JDesktopIcon representation and
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* adds the JInternalFrame back to its parent.
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*
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* @param frame The JInternalFrame to deiconify.
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*/
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public void deiconifyFrame(JInternalFrame frame)
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{
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JDesktopIcon icon = frame.getDesktopIcon();
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Container c = icon.getParent();
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removeIconFor(frame);
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c.add(frame);
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frame.setVisible(true);
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if (!frame.isSelected())
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{
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JDesktopPane p = frame.getDesktopPane();
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if (p != null)
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p.setSelectedFrame(frame);
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else
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{
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try
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{
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frame.setSelected(true);
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}
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catch (PropertyVetoException e)
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{
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// Do nothing.
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}
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}
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}
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c.invalidate();
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}
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/**
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* This method activates the JInternalFrame by moving it to the front and
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* selecting it.
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*
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* @param frame The JInternalFrame to activate.
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*/
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public void activateFrame(JInternalFrame frame)
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{
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JDesktopPane p = frame.getDesktopPane();
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JInternalFrame active = null;
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if (p != null)
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active = p.getSelectedFrame();
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if (active == null)
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{
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if (p != null)
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{
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p.setSelectedFrame(frame);
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}
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}
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else if (active != frame)
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{
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if (active.isSelected())
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{
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try
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{
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active.setSelected(false);
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}
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catch (PropertyVetoException ex)
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{
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// Not allowed.
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}
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}
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if (p != null)
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{
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p.setSelectedFrame(frame);
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}
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}
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frame.toFront();
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}
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/**
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* This method is called when the JInternalFrame loses focus.
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*
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* @param frame The JInternalFram to deactivate.
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*/
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public void deactivateFrame(JInternalFrame frame)
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{
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JDesktopPane p = frame.getDesktopPane();
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if (p != null)
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{
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if (p.getSelectedFrame() == frame)
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p.setSelectedFrame(null);
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}
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else
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{
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try
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{
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frame.setSelected(false);
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}
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catch (PropertyVetoException e)
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{
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// Do nothing if attempt is vetoed.
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}
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}
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}
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/**
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* This method is called to indicate that the DesktopManager should prepare
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* to drag the JInternalFrame. Any state information needed to drag the
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* frame will be prepared now.
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*
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* @param component The JComponent to drag, usually a JInternalFrame.
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*/
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public void beginDraggingFrame(JComponent component)
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{
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if (component instanceof JDesktopIcon)
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pane = ((JDesktopIcon) component).getInternalFrame().getDesktopPane();
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else
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pane = ((JInternalFrame) component).getDesktopPane();
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if (pane == null)
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return;
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dragCache = component.getBounds();
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if (! (pane instanceof JDesktopPane))
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currentDragMode = JDesktopPane.LIVE_DRAG_MODE;
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else
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currentDragMode = ((JDesktopPane) pane).getDragMode();
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}
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/**
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* This method is called to drag the JInternalFrame to a new location.
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*
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* @param component The JComponent to drag, usually a JInternalFrame.
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*
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* @param newX The new x coordinate.
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* @param newY The new y coordinate.
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*/
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public void dragFrame(JComponent component, int newX, int newY)
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{
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if (currentDragMode == JDesktopPane.OUTLINE_DRAG_MODE)
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{
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// FIXME: Do outline drag mode painting.
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}
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else
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{
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Rectangle b = component.getBounds();
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if (component instanceof JDesktopIcon)
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component.setBounds(newX, newY, b.width, b.height);
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else
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setBoundsForFrame((JInternalFrame) component, newX, newY, b.width,
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b.height);
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}
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}
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/**
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* This method indicates that the dragging is done. Any state information
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* stored by the DesktopManager can be cleared.
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*
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* @param component The JComponent that has finished dragging.
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*/
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public void endDraggingFrame(JComponent component)
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{
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if (currentDragMode == JDesktopPane.OUTLINE_DRAG_MODE)
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{
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setBoundsForFrame((JInternalFrame) component, dragCache.x, dragCache.y,
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dragCache.width, dragCache.height);
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pane = null;
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dragCache = null;
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component.repaint();
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}
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}
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/**
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* This method is called to indicate that the given JComponent will be
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* resized. Any state information necessary to resize the JComponent will
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* be prepared now.
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*
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* @param component The JComponent to resize, usually a JInternalFrame.
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* @param direction The direction to drag in (a SwingConstant).
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*/
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public void beginResizingFrame(JComponent component, int direction)
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{
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pane = ((JInternalFrame) component).getDesktopPane();
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if (pane == null)
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return;
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dragCache = component.getBounds();
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if (! (pane instanceof JDesktopPane))
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currentDragMode = JDesktopPane.LIVE_DRAG_MODE;
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else
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currentDragMode = ((JDesktopPane) pane).getDragMode();
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}
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/**
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* This method resizes the give JComponent.
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*
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* @param component The JComponent to resize.
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* @param newX The new x coordinate.
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* @param newY The new y coordinate.
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* @param newWidth The new width.
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* @param newHeight The new height.
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*/
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public void resizeFrame(JComponent component, int newX, int newY,
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int newWidth, int newHeight)
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{
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dragCache.setBounds(newX, newY, newWidth, newHeight);
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if (currentDragMode == JDesktopPane.OUTLINE_DRAG_MODE)
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{
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// FIXME: Do outline drag painting.
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}
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else
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setBoundsForFrame(component, dragCache.x, dragCache.y, dragCache.width,
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dragCache.height);
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}
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/**
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* This method is called to indicate that the given JComponent has finished
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* dragging. Any state information stored by the DesktopManager can be
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* cleared.
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*
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* @param component The JComponent that finished resizing.
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*/
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public void endResizingFrame(JComponent component)
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{
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if (currentDragMode == JDesktopPane.OUTLINE_DRAG_MODE)
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{
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setBoundsForFrame((JInternalFrame) component, dragCache.x, dragCache.y,
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dragCache.width, dragCache.height);
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pane = null;
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dragCache = null;
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component.repaint();
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}
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}
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/**
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* This method calls setBounds with the given parameters and repaints the
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* JComponent.
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*
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* @param component The JComponent to set bounds for.
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* @param newX The new x coordinate.
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* @param newY The new y coordinate.
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* @param newWidth The new width.
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* @param newHeight The new height.
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*/
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public void setBoundsForFrame(JComponent component, int newX, int newY,
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int newWidth, int newHeight)
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{
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component.setBounds(newX, newY, newWidth, newHeight);
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}
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/**
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* This is a helper method that removes the JDesktopIcon of the given
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* JInternalFrame from the parent.
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*
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* @param frame The JInternalFrame to remove an icon for.
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*/
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protected void removeIconFor(JInternalFrame frame)
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{
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JDesktopIcon icon = frame.getDesktopIcon();
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Container c = icon.getParent();
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if (c != null && icon != null)
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{
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Rectangle b = icon.getBounds();
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c.remove(icon);
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c.repaint(b.x, b.y, b.width, b.height);
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}
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}
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/**
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* This method is called by iconifyFrame to determine the bounds of the
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* JDesktopIcon for the given JInternalFrame.
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*
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* @param frame The JInternalFrame to find the bounds of its JDesktopIcon
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* for.
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*
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* @return The bounds of the JDesktopIcon.
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*/
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protected Rectangle getBoundsForIconOf(JInternalFrame frame)
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{
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// IconRects has no order to it.
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// The icon _must_ be placed in the first free slot (working from
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// the bottom left corner)
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// The icon also must not be placed where another icon is placed
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// (regardless whether that frame is an icon currently or not)
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JDesktopPane desktopPane = frame.getDesktopPane();
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if (desktopPane == null)
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return frame.getDesktopIcon().getBounds();
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Rectangle paneBounds = desktopPane.getBounds();
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Insets insets = desktopPane.getInsets();
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Dimension pref = frame.getDesktopIcon().getPreferredSize();
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Component[] frames = desktopPane.getComponents();
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int count = 0;
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for (int i = 0, j = 0; i < frames.length; i++)
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if (frames[i] instanceof JDesktopIcon
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|| frames[i] instanceof JInternalFrame
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&& ((JInternalFrame) frames[i]).getWasIcon() && frames[i] != frame)
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count++;
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iconRects = new Rectangle[count];
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for (int i = 0, j = 0; i < frames.length; i++)
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if (frames[i] instanceof JDesktopIcon)
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iconRects[--count] = frames[i].getBounds();
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else if (frames[i] instanceof JInternalFrame
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&& ((JInternalFrame) frames[i]).getWasIcon()
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&& frames[i] != frame)
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iconRects[--count] = ((JInternalFrame) frames[i])
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.getDesktopIcon().getBounds();
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int startingX = insets.left;
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int startingY = paneBounds.height - insets.bottom - pref.height;
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Rectangle ideal = new Rectangle(startingX, startingY, pref.width,
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pref.height);
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boolean clear = true;
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while (iconRects.length > 0)
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{
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clear = true;
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for (int i = 0; i < iconRects.length; i++)
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{
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if (iconRects[i] != null && iconRects[i].intersects(ideal))
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{
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clear = false;
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break;
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}
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}
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|
if (clear)
|
|
return ideal;
|
|
|
|
startingX += pref.width;
|
|
if (startingX + pref.width > paneBounds.width - insets.right)
|
|
{
|
|
startingX = insets.left;
|
|
startingY -= pref.height;
|
|
}
|
|
ideal.setBounds(startingX, startingY, pref.width, pref.height);
|
|
}
|
|
|
|
return ideal;
|
|
}
|
|
|
|
/**
|
|
* This method sets the bounds of the JInternalFrame right before the
|
|
* maximizeFrame call.
|
|
*
|
|
* @param frame The JInternalFrame being maximized.
|
|
* @param rect The normal bounds.
|
|
*/
|
|
protected void setPreviousBounds(JInternalFrame frame, Rectangle rect)
|
|
{
|
|
frame.setNormalBounds(rect);
|
|
}
|
|
|
|
/**
|
|
* This method returns the normal bounds of the JInternalFrame from before
|
|
* the maximize call.
|
|
*
|
|
* @param frame The JInternalFrame that is being restored.
|
|
*
|
|
* @return The previous bounds of the JInternalFrame.
|
|
*/
|
|
protected Rectangle getPreviousBounds(JInternalFrame frame)
|
|
{
|
|
return frame.getNormalBounds();
|
|
}
|
|
|
|
/**
|
|
* This method sets the value to true if the given JInternalFrame has been
|
|
* iconized and the bounds of its DesktopIcon are valid.
|
|
*
|
|
* @param frame The JInternalFrame for the JDesktopIcon.
|
|
* @param value True if the JInternalFrame has been iconized and the bounds
|
|
* of the JDesktopIcon are valid.
|
|
*/
|
|
protected void setWasIcon(JInternalFrame frame, Boolean value)
|
|
{
|
|
frame.setWasIcon(value.booleanValue(), WAS_ICON_ONCE_PROPERTY);
|
|
}
|
|
|
|
/**
|
|
* This method returns true if the given JInternalFrame has been iconized
|
|
* and the bounds of its DesktopIcon are valid.
|
|
*
|
|
* @param frame The JInternalFrame for the JDesktopIcon.
|
|
*
|
|
* @return True if the given JInternalFrame has been iconized and the bounds
|
|
* of its DesktopIcon are valid.
|
|
*/
|
|
protected boolean wasIcon(JInternalFrame frame)
|
|
{
|
|
return frame.getWasIcon();
|
|
}
|
|
}
|