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+/* BasicDesktopPaneUI.java --
+ Copyright (C) 2004 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package javax.swing.plaf.basic;
+
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.event.ActionEvent;
+import java.beans.PropertyVetoException;
+
+import javax.swing.AbstractAction;
+import javax.swing.DefaultDesktopManager;
+import javax.swing.DesktopManager;
+import javax.swing.JComponent;
+import javax.swing.JDesktopPane;
+import javax.swing.JInternalFrame;
+import javax.swing.KeyStroke;
+import javax.swing.UIManager;
+import javax.swing.plaf.ComponentUI;
+import javax.swing.plaf.DesktopPaneUI;
+import javax.swing.plaf.UIResource;
+
+/**
+ * This class is the UI delegate for JDesktopPane for the Basic look and feel.
+ */
+public class BasicDesktopPaneUI extends DesktopPaneUI
+{
+ /**
+ * This helper class is used to handle key events that cause JInternalFrames
+ * to be closed.
+ */
+ protected class CloseAction extends AbstractAction
+ {
+ /**
+ * This method is called when the action is performed.
+ *
+ * @param e The ActionEvent.
+ */
+ public void actionPerformed(ActionEvent e)
+ {
+ if (desktop.getSelectedFrame() != null)
+ {
+ try
+ {
+ desktop.getSelectedFrame().setClosed(true);
+ }
+ catch (PropertyVetoException pve)
+ {
+ // We do nothing if the attempts has been vetoed.
+ }
+ }
+ }
+
+ /**
+ * This method returns whether the action is enabled.
+ *
+ * @return Whether the action is enabled.
+ */
+ public boolean isEnabled()
+ {
+ if (desktop.getSelectedFrame() != null)
+ return desktop.getSelectedFrame().isClosable();
+ return false;
+ }
+ }
+
+ /**
+ * This helper class is used to handle key events that cause JInternalFrames
+ * to be maximized.
+ */
+ protected class MaximizeAction extends AbstractAction
+ {
+ /**
+ * This method is called when the action is performed.
+ *
+ * @param e The ActionEvent.
+ */
+ public void actionPerformed(ActionEvent e)
+ {
+ if (desktop.getSelectedFrame() != null)
+ {
+ try
+ {
+ desktop.getSelectedFrame().setMaximum(true);
+ }
+ catch (PropertyVetoException pve)
+ {
+ // We do nothing if the attempts has been vetoed.
+ }
+ }
+ }
+
+ /**
+ * This method returns whether the action is enabled.
+ *
+ * @return Whether the action is enabled.
+ */
+ public boolean isEnabled()
+ {
+ if (desktop.getSelectedFrame() != null)
+ return desktop.getSelectedFrame().isMaximizable();
+ return false;
+ }
+ }
+
+ /**
+ * This helper class is used to handle key events that cause JInternalFrames
+ * to be minimized.
+ */
+ protected class MinimizeAction extends AbstractAction
+ {
+ /**
+ * This method is called when the action is performed.
+ *
+ * @param e The ActionEvent.
+ */
+ public void actionPerformed(ActionEvent e)
+ {
+ if (desktop.getSelectedFrame() != null)
+ {
+ try
+ {
+ desktop.getSelectedFrame().setIcon(true);
+ }
+ catch (PropertyVetoException pve)
+ {
+ // We do nothing if the attempt has been vetoed.
+ }
+ }
+ }
+
+ /**
+ * This method returns whether the action is enabled.
+ *
+ * @return Whether the action is enabled.
+ */
+ public boolean isEnabled()
+ {
+ if (desktop.getSelectedFrame() != null)
+ return desktop.getSelectedFrame().isIconifiable();
+ return false;
+ }
+ }
+
+ /**
+ * This helper class is used to handle key events that pass the SELECTED
+ * property to the next JInternalFrame in the JDesktopPane's list of
+ * children.
+ */
+ protected class NavigateAction extends AbstractAction
+ {
+ /**
+ * This method is called when the action is performed.
+ *
+ * @param e The ActionEvent.
+ */
+ public void actionPerformed(ActionEvent e)
+ {
+ // This is supposed to set the next selected frame.
+ JInternalFrame[] frames = desktop.getAllFrames();
+ if (frames.length == 0)
+ return;
+
+ JInternalFrame sFrame = frames[0];
+ if (desktop.getSelectedFrame() != null)
+ sFrame = desktop.getSelectedFrame();
+
+ int i = 0;
+ for (; i < frames.length; i++)
+ if (frames[i] == sFrame)
+ break;
+
+ // FIXME: Navigate actions go reverse too.
+ if (i == frames.length)
+ i = 0;
+
+ desktop.setSelectedFrame(frames[i]);
+ }
+
+ /**
+ * This method returns whether the action is enabled.
+ *
+ * @return Whether this action is enabled.
+ */
+ public boolean isEnabled()
+ {
+ // Always true.
+ return true;
+ }
+ }
+
+ /**
+ * This helper class is used to restore the JInternalFrame to its original
+ * size before maximizing or iconifying.
+ */
+ protected class OpenAction extends AbstractAction
+ {
+ /**
+ * This method is called when the action is performed.
+ *
+ * @param e The ActionEvent.
+ */
+ public void actionPerformed(ActionEvent e)
+ {
+ JInternalFrame frame = desktop.getSelectedFrame();
+ if (frame != null)
+ {
+ try
+ {
+ if (frame.isIcon())
+ frame.setIcon(false);
+ else if (frame.isMaximum())
+ frame.setMaximum(false);
+ }
+ catch (PropertyVetoException pve)
+ {
+ // We do nothing if the attempt has been vetoed.
+ }
+ }
+ }
+
+ /**
+ * This method returns whether the action is enabled.
+ *
+ * @return Whether this action is enabled.
+ */
+ public boolean isEnabled()
+ {
+ // JInternalFrames are always restorable.
+ return true;
+ }
+ }
+
+ /**
+ * The KeyStroke associated with closing JInternalFrames.
+ * @deprecated
+ */
+ protected KeyStroke closeKey;
+
+ /**
+ * The KeyStroke associated with maximizing JInternalFrames.
+ * @deprecated
+ */
+ protected KeyStroke maximizeKey;
+
+ /**
+ * The KeyStroke associated with minimizing JInternalFrames.
+ * @deprecated
+ */
+ protected KeyStroke minimizeKey;
+
+ /**
+ * The KeyStroke associated with navigating (forward?) through
+ * JInternalFrames.
+ * @deprecated
+ */
+ protected KeyStroke navigateKey;
+
+ /**
+ * The KeyStroke associated with navigating (backward?) through
+ * JInternalFrames.
+ * @deprecated
+ */
+ protected KeyStroke navigateKey2;
+
+ /** The default desktop manager used with JDesktopPane. */
+ protected DesktopManager desktopManager;
+
+ /** The JDesktopPane this UI is used with. */
+ protected JDesktopPane desktop;
+
+ /**
+ * Creates a new BasicDesktopPaneUI object.
+ */
+ public BasicDesktopPaneUI()
+ {
+ // Nothing to do here.
+ }
+
+ /**
+ * This method creates a BasicDesktopPaneUI for the given JComponent.
+ *
+ * @param c The JComponent to create a UI for.
+ *
+ * @return A new BasicDesktopPaneUI.
+ */
+ public static ComponentUI createUI(JComponent c)
+ {
+ return new BasicDesktopPaneUI();
+ }
+
+ /**
+ * This method returns the maximum size for the given JComponent.
+ *
+ * @param c The JComponent to find a maximum size for.
+ *
+ * @return The maximum size for the given JComponent.
+ */
+ public Dimension getMaximumSize(JComponent c)
+ {
+ return getPreferredSize(c);
+ }
+
+ /**
+ * This method returns the minimum size for the given JComponent.
+ *
+ * @param c The JComponent to find a minimum size for.
+ *
+ * @return The minimum size for the given JComponent.
+ */
+ public Dimension getMinimumSize(JComponent c)
+ {
+ return getPreferredSize(c);
+ }
+
+ /**
+ * This method returns the preferred size for the given JComponent.
+ *
+ * @param c The JComponent to find a preferred size for.
+ *
+ * @return The preferred size for the given JComponent.
+ */
+ public Dimension getPreferredSize(JComponent c)
+ {
+ // return null because JDesktopPanes don't have preferred sizes.
+ return null;
+ }
+
+ /**
+ * This method installs the defaults for the JDesktopPane provided by the
+ * current look and feel.
+ */
+ protected void installDefaults()
+ {
+ Color bg = desktop.getBackground();
+ if (bg == null || bg instanceof UIResource)
+ desktop.setBackground(UIManager.getColor("desktop"));
+ }
+
+ /**
+ * This method installs the desktop manager for the JDesktopPane.
+ */
+ protected void installDesktopManager()
+ {
+ desktopManager = new DefaultDesktopManager();
+ desktop.setDesktopManager(desktopManager);
+ }
+
+ /**
+ * This method installs the keyboard actions for the JDesktopPane.
+ */
+ protected void installKeyboardActions()
+ {
+ // FIXME: create actions and keystrokes.
+ registerKeyboardActions();
+ }
+
+ /**
+ * This method installs the UI for the given JComponent.
+ *
+ * @param c The JComponent to install this UI for.
+ */
+ public void installUI(JComponent c)
+ {
+ if (c instanceof JDesktopPane)
+ {
+ desktop = (JDesktopPane) c;
+
+ installDefaults();
+ installDesktopManager();
+ installKeyboardActions();
+ }
+ }
+
+ /**
+ * This method registers the actions to the appropriate Action and Input
+ * maps.
+ */
+ protected void registerKeyboardActions()
+ {
+ // FIXME: Do the binding.
+ // XXX: the gtk windows tend to intercept a lot of the
+ // key events for themselves. must figure a way past that
+ // before binding
+ }
+
+ /**
+ * This method reverses the work done by the installDefaults method.
+ */
+ protected void uninstallDefaults()
+ {
+ desktop.setBackground(null);
+ }
+
+ /**
+ * This method reverses the work done by the installDesktopManager method.
+ */
+ protected void uninstallDesktopManager()
+ {
+ desktopManager = null;
+ desktop.setDesktopManager(null);
+ }
+
+ /**
+ * This method reverses the work done by the installKeyboardActions method.
+ */
+ protected void uninstallKeyboardActions()
+ {
+ unregisterKeyboardActions();
+ // FIXME: null the actions and keystrokes.
+ }
+
+ /**
+ * This method reverses the work done by the registerKeyboardActions method.
+ */
+ protected void unregisterKeyboardActions()
+ {
+ // FIXME: unmap the keystrokes
+ }
+
+ /**
+ * This method uninstalls the UI for the given JComponent. It should reverse
+ * all the work done by the installUI method.
+ *
+ * @param c The JComponent to uninstall this UI for.
+ */
+ public void uninstallUI(JComponent c)
+ {
+ uninstallKeyboardActions();
+ uninstallDesktopManager();
+ uninstallDefaults();
+
+ desktop = null;
+ }
+}