/*
* Copyright (c) 1998, 2008, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package com.sun.java.swing.plaf.windows;
import javax.swing.DefaultDesktopManager;
import javax.swing.JInternalFrame;
import javax.swing.JLayeredPane;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.beans.PropertyVetoException;
import java.util.Vector;
import java.lang.ref.WeakReference;
/**
* This class implements a DesktopManager which more closely follows
* the MDI model than the DefaultDesktopManager. Unlike the
* DefaultDesktopManager policy, MDI requires that the selected
* and activated child frames are the same, and that that frame
* always be the top-most window.
* <p>
* The maximized state is managed by the DesktopManager with MDI,
* instead of just being a property of the individual child frame.
* This means that if the currently selected window is maximized
* and another window is selected, that new window will be maximized.
*
* @see javax.swing.DefaultDesktopManager
* @author Thomas Ball
*/
public class WindowsDesktopManager extends DefaultDesktopManager
implements java.io.Serializable, javax.swing.plaf.UIResource {
/* The frame which is currently selected/activated.
* We store this value to enforce MDI's single-selection model.
*/
private WeakReference<JInternalFrame> currentFrameRef;
public void activateFrame(JInternalFrame f) {
JInternalFrame currentFrame = currentFrameRef != null ?
currentFrameRef.get() : null;
try {
super.activateFrame(f);
if (currentFrame != null && f != currentFrame) {
// If the current frame is maximized, transfer that
// attribute to the frame being activated.
if (currentFrame.isMaximum() &&
(f.getClientProperty("JInternalFrame.frameType") !=
"optionDialog") ) {
//Special case. If key binding was used to select next
//frame instead of minimizing the icon via the minimize
//icon.
if (!currentFrame.isIcon()) {
currentFrame.setMaximum(false);
if (f.isMaximizable()) {
if (!f.isMaximum()) {
f.setMaximum(true);
} else if (f.isMaximum() && f.isIcon()) {
f.setIcon(false);
} else {
f.setMaximum(false);
}
}
}
}
if (currentFrame.isSelected()) {
currentFrame.setSelected(false);
}
}
if (!f.isSelected()) {
f.setSelected(true);
}
} catch (PropertyVetoException e) {}
if (f != currentFrame) {
currentFrameRef = new WeakReference<JInternalFrame>(f);
}
}
}