484 lines
12 KiB
Java
484 lines
12 KiB
Java
/* Window.java --
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Copyright (C) 1999, 2000, 2002 Free Software Foundation
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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., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 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 java.awt;
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import java.awt.event.WindowEvent;
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import java.awt.event.WindowListener;
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import java.awt.peer.WindowPeer;
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import java.awt.peer.ComponentPeer;
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import java.util.EventListener;
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import java.util.Locale;
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import java.util.ResourceBundle;
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/**
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* This class represents a top-level window with no decorations.
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*
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* @author Aaron M. Renn (arenn@urbanophile.com)
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* @author Warren Levy <warrenl@cygnus.com>
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*/
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public class Window extends Container
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{
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// Serialized fields, from Sun's serialization spec.
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// private FocusManager focusMgr; // FIXME: what is this?
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private String warningString = null;
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private int state = 0;
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private int windowSerializedDataVersion = 0; // FIXME
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private transient WindowListener windowListener;
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private transient GraphicsConfiguration graphicsConfiguration;
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/**
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* This (package access) constructor is used by subclasses that want
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* to build windows that do not have parents. Eg. toplevel
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* application frames. Subclasses cannot call super(null), since
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* null is an illegal argument.
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*/
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Window()
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{
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setVisible(false);
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setLayout((LayoutManager) new BorderLayout());
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}
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Window(GraphicsConfiguration gc)
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{
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this();
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graphicsConfiguration = gc;
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}
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/**
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* Initializes a new instance of <code>Window</code> with the specified
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* parent. The window will initially be invisible.
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*
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* @param parent The owning <code>Frame</code> of this window.
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*/
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public Window(Frame owner)
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{
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this((Window) owner);
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}
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/** @since 1.2 */
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public Window(Window owner)
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{
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this();
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if (owner == null)
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throw new IllegalArgumentException("owner must not be null");
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this.parent = owner;
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// FIXME: add to owner's "owned window" list
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//owner.owned.add(this); // this should be a weak reference
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}
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/** @since 1.3 */
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public Window(Window owner, GraphicsConfiguration gc)
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{
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this(owner);
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/* FIXME: Security check
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SecurityManager.checkTopLevelWindow(...)
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if (gc != null
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&& gc.getDevice().getType() != GraphicsDevice.TYPE_RASTER_SCREEN)
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throw new IllegalArgumentException ("gc must be from a screen device");
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if (gc == null)
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graphicsConfiguration = GraphicsEnvironment.getLocalGraphicsEnvironment()
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.getDefaultScreenDevice()
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.getDefaultConfiguration();
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else
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*/
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graphicsConfiguration = gc;
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}
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GraphicsConfiguration getGraphicsConfigurationImpl()
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{
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if (graphicsConfiguration != null)
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return graphicsConfiguration;
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return super.getGraphicsConfigurationImpl();
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}
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protected void finalize() throws Throwable
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{
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// FIXME: remove from owner's "owned window" list (Weak References)
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super.finalize();
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}
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/**
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* Creates the native peer for this window.
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*/
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public void addNotify()
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{
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if (peer == null)
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peer = getToolkit().createWindow(this);
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super.addNotify();
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}
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/**
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* Relays out this window's child components at their preferred size.
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*
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* @specnote pack() doesn't appear to be called internally by show(), so
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* we duplicate some of the functionality.
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*/
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public void pack()
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{
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if (parent != null
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&& !parent.isDisplayable())
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parent.addNotify();
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if (peer == null)
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addNotify();
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setSize(getPreferredSize());
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validate();
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}
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/**
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* Makes this window visible and brings it to the front.
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*/
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public void show()
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{
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if (peer == null)
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addNotify();
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super.show();
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toFront();
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}
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public void hide()
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{
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// FIXME: call hide() on amy "owned" children here.
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super.hide();
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}
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/**
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* Called to free any resource associated with this window.
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*/
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public void dispose()
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{
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hide();
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Window[] list = getOwnedWindows();
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for (int i=0; i<list.length; i++)
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list[i].dispose();
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for (int i = 0; i < ncomponents; ++i)
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component[i].removeNotify();
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this.removeNotify();
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}
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/**
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* Sends this window to the back so that all other windows display in
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* front of it.
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*/
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public void toBack()
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{
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if (peer != null)
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{
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WindowPeer wp = (WindowPeer) peer;
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wp.toBack();
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}
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}
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/**
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* Brings this window to the front so that it displays in front of
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* any other windows.
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*/
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public void toFront()
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{
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if (peer != null)
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{
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WindowPeer wp = (WindowPeer) peer;
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wp.toFront();
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}
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}
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/**
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* Returns the toolkit used to create this window.
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*
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* @return The toolkit used to create this window.
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*
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* @specnote Unlike Component.getToolkit, this implementation always
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* returns the value of Toolkit.getDefaultToolkit().
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*/
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public Toolkit getToolkit()
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{
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return Toolkit.getDefaultToolkit();
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}
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/**
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* Returns the warning string that will be displayed if this window is
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* popped up by an unsecure applet or application.
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*
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* @return The unsecure window warning message.
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*/
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public final String getWarningString()
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{
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boolean secure = true;
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/* boolean secure = SecurityManager.checkTopLevelWindow(...) */
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if (!secure)
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{
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if (warningString != null)
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return warningString;
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else
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{
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String warning = System.getProperty("awt.appletWarning");
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return warning;
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}
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}
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return null;
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}
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/**
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* Returns the locale that this window is configured for.
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*
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* @return The locale this window is configured for.
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*/
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public Locale getLocale()
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{
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return locale == null ? Locale.getDefault() : locale;
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}
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/*
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/** @since 1.2
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public InputContext getInputContext()
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{
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// FIXME
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}
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*/
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/**
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* Sets the cursor for this window to the specifiec cursor.
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*
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* @param cursor The new cursor for this window.
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*/
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public void setCursor(Cursor cursor)
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{
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super.setCursor(cursor);
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}
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public Window getOwner()
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{
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return (Window) parent;
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}
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/** @since 1.2 */
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public Window[] getOwnedWindows()
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{
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// FIXME: return array containing all the windows this window currently
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// owns.
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return new Window[0];
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}
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/**
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* Adds the specified listener to the list of <code>WindowListeners</code>
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* that will receive events for this window.
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*
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* @param listener The <code>WindowListener</code> to add.
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*/
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public synchronized void addWindowListener(WindowListener listener)
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{
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windowListener = AWTEventMulticaster.add(windowListener, listener);
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}
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/**
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* Removes the specified listener from the list of
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* <code>WindowListeners</code> that will receive events for this window.
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*
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* @param listener The <code>WindowListener</code> to remove.
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*/
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public synchronized void removeWindowListener(WindowListener listener)
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{
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windowListener = AWTEventMulticaster.remove(windowListener, listener);
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}
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public synchronized WindowListener[] getWindowListeners()
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{
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return (WindowListener[])
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AWTEventMulticaster.getListeners(windowListener,
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WindowListener.class);
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}
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/** @since 1.3 */
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public EventListener[] getListeners(Class listenerType)
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{
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if (listenerType == WindowListener.class)
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return getWindowListeners();
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return super.getListeners(listenerType);
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}
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void dispatchEventImpl(AWTEvent e)
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{
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// Make use of event id's in order to avoid multiple instanceof tests.
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if (e.id <= WindowEvent.WINDOW_LAST
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&& e.id >= WindowEvent.WINDOW_FIRST
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&& (windowListener != null
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|| (eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0))
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processEvent(e);
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else
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super.dispatchEventImpl(e);
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}
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/**
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* Processes the specified event for this window. If the event is an
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* instance of <code>WindowEvent</code>, then
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* <code>processWindowEvent()</code> is called to process the event,
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* otherwise the superclass version of this method is invoked.
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*
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* @param event The event to process.
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*/
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protected void processEvent(AWTEvent evt)
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{
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if (evt instanceof WindowEvent)
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processWindowEvent((WindowEvent) evt);
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else
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super.processEvent(evt);
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}
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/**
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* Dispatches this event to any listeners that are listening for
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* <code>WindowEvents</code> on this window. This method only gets
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* invoked if it is enabled via <code>enableEvents()</code> or if
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* a listener has been added.
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*
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* @param event The event to process.
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*/
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protected void processWindowEvent(WindowEvent evt)
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{
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if (windowListener != null)
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{
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switch (evt.getID())
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{
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case WindowEvent.WINDOW_ACTIVATED:
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windowListener.windowActivated(evt);
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break;
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case WindowEvent.WINDOW_CLOSED:
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windowListener.windowClosed(evt);
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break;
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case WindowEvent.WINDOW_CLOSING:
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windowListener.windowClosing(evt);
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break;
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case WindowEvent.WINDOW_DEACTIVATED:
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windowListener.windowDeactivated(evt);
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break;
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case WindowEvent.WINDOW_DEICONIFIED:
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windowListener.windowDeiconified(evt);
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break;
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case WindowEvent.WINDOW_ICONIFIED:
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windowListener.windowIconified(evt);
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break;
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case WindowEvent.WINDOW_OPENED:
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windowListener.windowOpened(evt);
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break;
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}
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}
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}
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/**
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* Returns the child window that has focus if this window is active.
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* This method returns <code>null</code> if this window is not active
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* or no children have focus.
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*
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* @return The component that has focus, or <code>null</code> if no
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* component has focus.
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*/
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public Component getFocusOwner()
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{
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// FIXME
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return null;
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}
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/**
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* Post a Java 1.0 event to the event queue.
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*
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* @param event The event to post.
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*/
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public boolean postEvent(Event e)
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{
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// FIXME
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return false;
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}
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/**
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* Tests whether or not this window is visible on the screen.
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*
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* @return <code>true</code> if this window is visible, <code>false</code>
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* otherwise.
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*/
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public boolean isShowing()
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{
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return super.isShowing();
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}
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/** @since 1.2 */
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public void applyResourceBundle(ResourceBundle rb)
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{
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// FIXME
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}
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/** @since 1.2 */
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public void applyResourceBundle(String rbName)
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{
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ResourceBundle rb = ResourceBundle.getBundle(rbName);
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if (rb != null)
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applyResourceBundle(rb);
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}
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/*
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public AccessibleContext getAccessibleContext()
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{
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// FIXME
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}
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*/
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/**
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* Get graphics configuration. The implementation for Window will
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* not ask any parent containers, since Window is a toplevel
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* window and not actually embedded in the parent component.
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*/
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public GraphicsConfiguration getGraphicsConfiguration()
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{
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if (graphicsConfiguration != null) return graphicsConfiguration;
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if (peer != null) return peer.getGraphicsConfiguration();
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return null;
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}
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}
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