Imported GNU Classpath 0.19 + gcj-import-20051115.
* sources.am: Regenerated.
* Makefile.in: Likewise.
* scripts/makemake.tcl: Use glob -nocomplain.
From-SVN: r107049
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Mark Wielaard
parent
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commit
8f523f3a10
1241 changed files with 97711 additions and 25284 deletions
280
libjava/classpath/javax/swing/KeyboardManager.java
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libjava/classpath/javax/swing/KeyboardManager.java
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/* KeyboardManager.java --
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Copyright (C) 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.applet.Applet;
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import java.awt.Component;
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import java.awt.Container;
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import java.awt.Window;
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import java.awt.event.KeyEvent;
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import java.util.Enumeration;
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import java.util.Hashtable;
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import java.util.Vector;
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/**
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* This class maintains a mapping from top-level containers to a
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* Hashtable. The Hashtable maps KeyStrokes to Components to be used when
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* Components register keyboard actions with the condition
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* JComponent.WHEN_IN_FOCUSED_WINDOW.
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*
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* @author Anthony Balkissoon <abalkiss@redhat.com>
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*
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*/
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class KeyboardManager
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{
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/** Shared instance of KeyboardManager **/
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static KeyboardManager manager = new KeyboardManager();
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/**
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* A mapping between top level containers and Hashtables that
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* map KeyStrokes to Components.
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*/
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Hashtable topLevelLookup = new Hashtable();
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/**
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* A mapping between top level containers and Vectors of JMenuBars
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* used to allow all the JMenuBars within a top level container
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* a chance to consume key events.
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*/
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Hashtable menuBarLookup = new Hashtable();
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/**
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* Returns the shared instance of KeyboardManager.
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* @return the shared instance of KeybaordManager.
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*/
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public static KeyboardManager getManager()
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{
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return manager;
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}
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/**
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* Returns the top-level ancestor for the given JComponent.
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* @param c the JComponent whose top-level ancestor we want
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* @return the top-level ancestor for the given JComponent.
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*/
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static Container findTopLevel (Component c)
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{
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Container topLevel = (c instanceof Container) ? (Container) c
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: c.getParent();
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while (topLevel != null &&
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!(topLevel instanceof Window) &&
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!(topLevel instanceof Applet) &&
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!(topLevel instanceof JInternalFrame))
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topLevel = topLevel.getParent();
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return topLevel;
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}
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/**
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* Returns the Hashtable that maps KeyStrokes to Components, for
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* the specified top-level container c. If no Hashtable exists
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* we create and register it here and return the newly created
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* Hashtable.
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*
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* @param c the top-level container whose Hashtable we want
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* @return the Hashtable mapping KeyStrokes to Components for the
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* specified top-level container
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*/
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Hashtable getHashtableForTopLevel (Container c)
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{
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Hashtable keyToComponent = (Hashtable)topLevelLookup.get(c);
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if (keyToComponent == null)
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{
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keyToComponent = new Hashtable();
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topLevelLookup.put(c, keyToComponent);
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}
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return keyToComponent;
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}
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/**
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* Registers a KeyStroke with a Component. This does not register
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* the KeyStroke to a specific Action. When searching for a
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* WHEN_IN_FOCUSED_WINDOW binding we will first go up to the focused
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* top-level Container, then get the Hashtable that maps KeyStrokes
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* to components for that particular top-level Container, then
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* call processKeyBindings on that component with the condition
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* JComponent.WHEN_IN_FOCUSED_WINDOW.
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* @param comp the JComponent associated with the KeyStroke
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* @param key the KeyStroke
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*/
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public void registerBinding(JComponent comp, KeyStroke key)
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{
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// This method associates a KeyStroke with a particular JComponent
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// When the KeyStroke occurs, if this component's top-level ancestor
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// has focus (one of its children is the focused Component) then
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// comp.processKeyBindings will be called with condition
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// JComponent.WHEN_IN_FOCUSED_WINDOW.
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// Look for the JComponent's top-level parent and return if it is null
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Container topLevel = findTopLevel(comp);
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if (topLevel == null)
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return;
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// Now get the Hashtable for this top-level container
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Hashtable keyToComponent = getHashtableForTopLevel(topLevel);
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// And add the new binding to this Hashtable
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// FIXME: should allow more than one JComponent to be associated
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// with a KeyStroke, in case one of them is disabled
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keyToComponent.put(key, comp);
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}
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public void clearBindingsForComp(JComponent comp)
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{
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// This method clears all the WHEN_IN_FOCUSED_WINDOW bindings associated
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// with <code>comp</code>. This is used for a terribly ineffcient
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// strategy in which JComponent.updateComponentInputMap simply clears
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// all bindings associated with its component and then reloads all the
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// bindings from the updated ComponentInputMap. This is only a preliminary
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// strategy and should be improved upon once the WHEN_IN_FOCUSED_WINDOW
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// bindings work.
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// Find the top-level ancestor
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Container topLevel = findTopLevel(comp);
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if (topLevel == null)
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return;
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// And now get its Hashtable
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Hashtable keyToComponent = getHashtableForTopLevel(topLevel);
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Enumeration keys = keyToComponent.keys();
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Object temp;
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// Iterate through the keys and remove any key whose value is comp
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while (keys.hasMoreElements())
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{
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temp = keys.nextElement();
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if (comp == (JComponent)keyToComponent.get(temp))
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keyToComponent.remove(temp);
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}
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}
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/**
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* This method registers all the bindings in the given ComponentInputMap.
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* Rather than call registerBinding on all the keys, we do the work here
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* so that we don't duplicate finding the top-level container and
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* getting its Hashtable.
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*
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* @param map the ComponentInputMap whose bindings we want to register
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*/
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public void registerEntireMap (ComponentInputMap map)
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{
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if (map == null)
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return;
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JComponent comp = map.getComponent();
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KeyStroke[] keys = map.keys();
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if (keys == null)
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return;
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// Find the top-level container associated with this ComponentInputMap
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Container topLevel = findTopLevel(comp);
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if (topLevel == null)
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return;
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// Register the KeyStrokes in the top-level container's Hashtable
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Hashtable keyToComponent = getHashtableForTopLevel(topLevel);
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for (int i = 0; i < keys.length; i++)
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keyToComponent.put(keys[i], comp);
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}
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public boolean processKeyStroke (Component comp, KeyStroke key, KeyEvent e)
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{
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boolean pressed = e.getID() == KeyEvent.KEY_PRESSED;
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// Look for the top-level ancestor
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Container topLevel = findTopLevel(comp);
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if (topLevel == null)
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return false;
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// Now get the Hashtable for that top-level container
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Hashtable keyToComponent = getHashtableForTopLevel(topLevel);
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Enumeration keys = keyToComponent.keys();
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JComponent target = (JComponent)keyToComponent.get(key);
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if (target != null && target.processKeyBinding
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(key, e, JComponent.WHEN_IN_FOCUSED_WINDOW, pressed))
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return true;
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// Have to give all the JMenuBars a chance to consume the event
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Vector menuBars = getVectorForTopLevel(topLevel);
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for (int i = 0; i < menuBars.size(); i++)
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if (((JMenuBar)menuBars.elementAt(i)).processKeyBinding(key, e, JComponent.WHEN_IN_FOCUSED_WINDOW, pressed))
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return true;
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return false;
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}
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/**
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* Returns the Vector of JMenuBars associated with the top-level
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* @param c the top-level container whose JMenuBar Vector we want
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* @return the Vector of JMenuBars for this top level container
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*/
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Vector getVectorForTopLevel(Container c)
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{
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Vector result = (Vector) menuBarLookup.get(c);
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if (result == null)
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{
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result = new Vector();
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menuBarLookup.put (c, result);
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}
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return result;
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}
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/**
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* In processKeyStroke, KeyManager must give all JMenuBars in the
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* focused top-level container a chance to process the event. So,
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* JMenuBars must be registered in KeyManager and associated with a
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* top-level container. That's what this method is for.
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* @param menuBar the JMenuBar to register
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*/
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public void registerJMenuBar (JMenuBar menuBar)
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{
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Container topLevel = findTopLevel(menuBar);
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Vector menuBars = getVectorForTopLevel(topLevel);
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if (!menuBars.contains(menuBar))
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menuBars.add(menuBar);
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}
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/**
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* Unregisters a JMenuBar from its top-level container. This is
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* called before the JMenuBar is actually removed from the container
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* so findTopLevel will still find us the correct top-level container.
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* @param menuBar the JMenuBar to unregister.
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*/
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public void unregisterJMenuBar (JMenuBar menuBar)
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{
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Container topLevel = findTopLevel(menuBar);
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Vector menuBars = getVectorForTopLevel(topLevel);
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if (menuBars.contains(menuBar))
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menuBars.remove(menuBar);
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}
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}
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