9b95cee697
* java/awt/Component.java (processEvent): Check ComponentEvent after KeyEvent. From-SVN: r51301
2486 lines
64 KiB
Java
2486 lines
64 KiB
Java
/* Copyright (C) 1999, 2000, 2001, 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.*;
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import java.awt.image.*;
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import java.io.PrintStream;
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import java.io.PrintWriter;
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import java.lang.reflect.*;
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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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import java.util.Vector;
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import java.awt.peer.ComponentPeer;
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import java.awt.peer.LightweightPeer;
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import java.beans.PropertyChangeSupport;
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import java.beans.PropertyChangeListener;
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// import javax.accessibility.AccessibleContext;
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/**
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* The root of all evil.
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*
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* Status: Incomplete. The event dispatch mechanism is implemented. All
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* other methods defined in the J2SE 1.3 API javadoc exist, but are mostly
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* incomplete or only stubs; except for methods relating to the Drag and Drop,
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* Input Method, and Accessibility frameworks: These methods are present but
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* commented out.
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*/
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public abstract class Component implements ImageObserver, MenuContainer,
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java.io.Serializable
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{
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/**
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* Constant returned by the <code>getAlignmentY</code> method to indicate
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* that the component wishes to be aligned to the bottom relative to
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* other components.
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*/
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public static final float BOTTOM_ALIGNMENT = (float)1.0;
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/**
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* Constant returned by the <code>getAlignmentY</code> and
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* <code>getAlignmentX</code> methods to indicate
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* that the component wishes to be aligned to the center relative to
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* other components.
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*/
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public static final float CENTER_ALIGNMENT = (float)0.5;
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/**
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* Constant returned by the <code>getAlignmentY</code> method to indicate
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* that the component wishes to be aligned to the top relative to
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* other components.
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*/
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public static final float TOP_ALIGNMENT = (float)0.0;
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/**
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* Constant returned by the <code>getAlignmentX</code> method to indicate
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* that the component wishes to be aligned to the right relative to
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* other components.
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*/
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public static final float RIGHT_ALIGNMENT = (float)1.0;
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/**
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* Constant returned by the <code>getAlignmentX</code> method to indicate
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* that the component wishes to be aligned to the left relative to
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* other components.
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*/
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public static final float LEFT_ALIGNMENT = (float)0.0;
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/* Make the treelock a String so that it can easily be identified
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in debug dumps. We clone the String in order to avoid a conflict in
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the unlikely event that some other package uses exactly the same string
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as a lock object. */
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static Object treeLock = new String("AWT_TREE_LOCK");
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/* Serialized fields from the serialization spec. */
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// FIXME: Default values?
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int x;
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int y;
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int width;
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int height;
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Color foreground;
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Color background;
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Font font;
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Font peerFont;
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Cursor cursor;
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Locale locale;
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boolean visible = true; // default (except for Window)
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boolean enabled = true;
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boolean valid;
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boolean hasFocus;
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//DropTarget dropTarget;
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Vector popups;
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String name;
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boolean nameExplicitlySet;
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Dimension minSize;
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Dimension prefSize;
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boolean newEventsOnly;
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long eventMask = AWTEvent.PAINT_EVENT_MASK;
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PropertyChangeSupport changeSupport;
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boolean isPacked;
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int componentSerializedDataVersion;
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/* AccessibleContext accessibleContext; */
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/* Anything else is non-serializable, and should be declared "transient". */
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transient Container parent;
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transient java.awt.peer.ComponentPeer peer;
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transient ComponentListener componentListener;
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transient FocusListener focusListener;
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transient KeyListener keyListener;
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transient MouseListener mouseListener;
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transient MouseMotionListener mouseMotionListener;
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transient InputMethodListener inputMethodListener;
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transient HierarchyListener hierarchyListener;
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transient HierarchyBoundsListener hierarchyBoundsListener;
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transient ComponentOrientation orientation = ComponentOrientation.UNKNOWN;
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/**
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* Default constructor for subclasses.
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*/
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protected Component()
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{
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}
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/**
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* Returns the name of this component.
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*
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* @return The name of this component.
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*/
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public String getName()
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{
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if (name == null && !nameExplicitlySet)
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name = generateName();
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return name;
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}
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/**
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* Sets the name of this component to the specified name.
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*
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* @param name The new name of this component.
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*/
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public void setName(String name)
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{
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nameExplicitlySet = true;
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this.name = name;
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}
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/** Subclasses should override this to return unique component names like
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* "menuitem0".
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*/
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String generateName()
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{
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// Component is abstract.
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return null;
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}
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/**
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* Returns the parent of this component.
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*
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* @return The parent of this component.
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*/
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public Container getParent()
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{
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return parent;
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}
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// Sets the peer for this component.
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final void setPeer (ComponentPeer peer)
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{
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this.peer = peer;
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}
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/**
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* Returns the native windowing system peer for this component.
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*
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* @return The peer for this component.
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* @deprecated
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*/
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// Classpath's Gtk peers rely on this.
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public java.awt.peer.ComponentPeer getPeer()
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{
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return peer;
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}
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// FIXME: java.awt.dnd classes not yet implemented
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/*
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public void setDropTarget(DropTarget dt)
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{
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this.dropTarget = dt;
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}
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public DropTarget getDropTarget()
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{
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return dropTarget;
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}
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*/
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/** @since 1.3 */
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public GraphicsConfiguration getGraphicsConfiguration()
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{
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return getGraphicsConfigurationImpl();
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}
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/** Implementation method that allows classes such as Canvas and
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Window to override the graphics configuration without violating
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the published API. */
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GraphicsConfiguration getGraphicsConfigurationImpl()
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{
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if (peer != null)
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{
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GraphicsConfiguration config = peer.getGraphicsConfiguration();
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if (config != null)
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return config;
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}
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if (parent != null)
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return parent.getGraphicsConfiguration();
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return null;
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}
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/**
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* Returns the object used for synchronization locks on this component
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* when performing tree and layout functions.
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*
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* @return The synchronization lock for this component.
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*/
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public final Object getTreeLock()
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{
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return treeLock;
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}
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// The sync lock object for this component.
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final void setTreeLock(Object tree_lock)
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{
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this.treeLock = tree_lock;
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}
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/**
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* Returns the toolkit in use for this component.
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*
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* @return The toolkit for this component.
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*/
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public Toolkit getToolkit()
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{
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if (peer != null)
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{
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Toolkit tk = peer.getToolkit();
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if (tk != null)
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return tk;
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}
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if (parent != null)
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return parent.getToolkit ();
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return Toolkit.getDefaultToolkit ();
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}
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/**
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* Tests whether or not this component is valid. A invalid component needs
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* to have its layout redone.
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*
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* @return <code>true</code> if this component is valid, <code>false</code>
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* otherwise.
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*/
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public boolean isValid()
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{
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return valid;
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}
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/** @since 1.2 */
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public boolean isDisplayable()
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{
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if (parent != null)
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return parent.isDisplayable();
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return false;
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}
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/**
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* Tests whether or not this component is visible.
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*
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* @return <code>true</code> if the component is visible,
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* <code>false</code> otherwise.
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*/
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public boolean isVisible()
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{
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return visible;
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}
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/**
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* Tests whether or not this component is actually being shown on
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* the screen. This will be true if and only if it this component is
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* visible and its parent components are all visible.
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*
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* @return <code>true</code> if the component is showing on the screen,
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* <code>false</code> otherwise.
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*/
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public boolean isShowing()
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{
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if (! visible || peer == null)
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return false;
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return parent == null ? true : parent.isShowing ();
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}
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/**
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* Tests whether or not this component is enabled.
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*
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* @return <code>true</code> if the component is enabled,
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* <code>false</code> otherwise.
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*/
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public boolean isEnabled()
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{
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return enabled;
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}
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/**
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* Enables or disables this component.
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*
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* @param enabled <code>true</code> to enable this component,
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* <code>false</code> to disable it.
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*
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* @deprecated Deprecated in favor of <code>setEnabled()</code>.
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*/
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public void setEnabled(boolean b)
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{
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this.enabled = b;
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if (peer != null)
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peer.setEnabled(b);
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}
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/**
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* Enables this component.
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*
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* @deprecated Deprecated in favor of <code>setEnabled()</code>.
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*/
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public void enable()
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{
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setEnabled(true);
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}
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/**
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* Enables or disables this component.
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*
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* @param enabled <code>true</code> to enable this component,
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* <code>false</code> to disable it.
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*
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* @deprecated Deprecated in favor of <code>setEnabled()</code>.
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*/
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public void enable(boolean b)
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{
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setEnabled(b);
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}
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/**
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* Disables this component.
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*
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* @deprecated Deprecated in favor of <code>setEnabled()</code>.
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*/
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public void disable()
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{
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setEnabled(false);
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}
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public boolean isDoubleBuffered()
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{
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return false;
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}
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/** @since 1.2 */
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public void enableInputMethods(boolean enable)
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{
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// FIXME
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}
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/**
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* Makes this component visible or invisible.
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*
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* @param visible <code>true</code> to make this component visible,
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* </code>false</code> to make it invisible.
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* @specnote Inspection by subclassing shows that Sun's implementation
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* calls show(boolean) which then calls show() or hide(). It is
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* the show() method that is overriden in subclasses like Window.
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* We do the same to preserve compatibility for subclasses.
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*/
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public void setVisible(boolean b)
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{
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if (peer != null)
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peer.setVisible (b);
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this.visible = b;
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}
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/**
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* Makes this component visible on the screen.
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*
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* @deprecated Deprecated in favor of <code>setVisible()</code>.
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*/
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public void show()
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{
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setVisible (true);
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}
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/**
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* Makes this component visible or invisible.
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*
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* @param visible <code>true</code> to make this component visible,
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* </code>false</code> to make it invisible.
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*
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* @deprecated Deprecated in favor of <code>setVisible()</code>.
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*/
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public void show(boolean b)
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{
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setVisible (b);
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}
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/**
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* Hides this component so that it is no longer shown on the screen.
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*
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* @deprecated Deprecated in favor of <code>setVisible()</code>.
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*/
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public void hide()
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{
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setVisible (false);
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}
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/**
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* Returns this component's foreground color.
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*
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* @return This component's foreground color.
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*/
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public Color getForeground()
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{
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if (foreground != null)
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return foreground;
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if (parent != null)
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return parent.getForeground();
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return null;
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}
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/**
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* Sets this component's foreground color to the specified color.
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*
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* @param foreground_color The new foreground color.
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*/
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public void setForeground(Color c)
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{
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if (peer != null)
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peer.setForeground(c);
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this.foreground = c;
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}
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/**
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* Returns this component's background color.
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*
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* @return the background color of the component. null may be
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* returned instead of the actual background color, if this
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* method is called before the component is added to the
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* component hierarchy.
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*/
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public Color getBackground()
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{
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if (background != null)
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return background;
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if (parent != null)
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return parent.getBackground();
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return null;
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}
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/**
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* Sets this component's background color to the specified color.
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*
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* @param background_color The new background color
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*/
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public void setBackground(Color c)
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{
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if (peer != null)
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peer.setBackground(c);
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this.background = c;
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}
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/**
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* Returns the font in use for this component.
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*
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* @return The font for this component.
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*/
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public Font getFont()
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{
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if (font != null)
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return font;
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if (parent != null)
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return parent.getFont();
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return null;
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}
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/**
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* Sets the font for this component to the specified font.
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*
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* @param font The new font for this component.
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*/
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public void setFont(Font f)
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{
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if (peer != null)
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peer.setFont(f);
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this.font = f;
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}
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/**
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* Returns the locale for this component. If this component does not
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* have a locale, the locale of the parent component is returned. If the
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* component has no parent, the system default locale is returned.
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*
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* @return The locale for this component.
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*/
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public Locale getLocale() throws IllegalComponentStateException
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{
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if (locale != null)
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return locale;
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if (parent == null)
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throw new IllegalComponentStateException
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("Component has no parent: Can not determine Locale");
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return parent.getLocale();
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}
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|
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/**
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* Sets the locale for this component to the specified locale.
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*
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* @param locale The new locale for this component.
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*/
|
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public void setLocale(Locale l)
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{
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this.locale = l;
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|
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/* new writing/layout direction perhaps, or make more/less
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room for localized text labels */
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invalidate();
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}
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/**
|
|
* Returns the color model of the device this componet is displayed on.
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*
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* @return This object's color model.
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*/
|
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public ColorModel getColorModel()
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{
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GraphicsConfiguration config = getGraphicsConfiguration();
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if (config != null)
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return config.getColorModel();
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return getToolkit().getColorModel();
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}
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/**
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* Returns the location of this component's top left corner relative to
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* its parent component.
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*
|
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* @return The location of this component.
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*/
|
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public Point getLocation()
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{
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return new Point(x, y);
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}
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/**
|
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* Returns the location of this component's top left corner in screen
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* coordinates.
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*
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* @return The location of this component in screen coordinates.
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*/
|
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public Point getLocationOnScreen()
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{
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if (! isShowing ())
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throw new IllegalComponentStateException ("component not showing");
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// We know peer != null here.
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return peer.getLocationOnScreen ();
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}
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/**
|
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* Returns the location of this component's top left corner relative to
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* its parent component.
|
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*
|
|
* @return The location of this component.
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|
*
|
|
* @deprecated This method is deprecated in favor of
|
|
* <code>getLocation()</code>.
|
|
*/
|
|
public Point location()
|
|
{
|
|
return getLocation();
|
|
}
|
|
|
|
/**
|
|
* Moves this component to the specified location. The coordinates are
|
|
* the new upper left corner of this component.
|
|
*
|
|
* @param x The new X coordinate of this component.
|
|
* @param y The new Y coordinate of this component.
|
|
*/
|
|
public void setLocation (int x, int y)
|
|
{
|
|
if ((this.x == x) && (this.y == y))
|
|
return;
|
|
|
|
invalidate();
|
|
|
|
this.x = x;
|
|
this.y = y;
|
|
if (peer != null)
|
|
peer.setBounds(x, y, width, height);
|
|
}
|
|
|
|
/**
|
|
* Moves this component to the specified location. The coordinates are
|
|
* the new upper left corner of this component.
|
|
*
|
|
* @param x The new X coordinate of this component.
|
|
* @param y The new Y coordinate of this component.
|
|
*
|
|
* @deprecated Deprecated in favor for <code>setLocation</code>.
|
|
*/
|
|
public void move(int x, int y)
|
|
{
|
|
setLocation(x,y);
|
|
}
|
|
|
|
/**
|
|
* Moves this component to the specified location. The coordinates are
|
|
* the new upper left corner of this component.
|
|
*
|
|
* @param p New coordinates for this component.
|
|
*/
|
|
public void setLocation(Point p)
|
|
{
|
|
setLocation(p.x, p.y);
|
|
}
|
|
|
|
/**
|
|
* Returns the size of this object.
|
|
*
|
|
* @return The size of this object.
|
|
*/
|
|
public Dimension getSize()
|
|
{
|
|
return new Dimension(width, height);
|
|
}
|
|
|
|
/**
|
|
* Returns the size of this object.
|
|
*
|
|
* @return The size of this object.
|
|
*
|
|
* @deprecated This method is deprecated in favor of <code>getSize</code>.
|
|
*/
|
|
public Dimension size()
|
|
{
|
|
return getSize();
|
|
}
|
|
|
|
/**
|
|
* Sets the size of this component to the specified width and height.
|
|
*
|
|
* @param width The new width of this component.
|
|
* @param height The new height of this component.
|
|
*/
|
|
public void setSize(int width, int height)
|
|
{
|
|
if ((this.width == width) && (this.height == height))
|
|
return;
|
|
|
|
invalidate();
|
|
|
|
this.width = width;
|
|
this.height = height;
|
|
if (peer != null)
|
|
peer.setBounds(x, y, width, height);
|
|
}
|
|
|
|
/**
|
|
* Sets the size of this component to the specified value.
|
|
*
|
|
* @param width The new width of the component.
|
|
* @param height The new height of the component.
|
|
*
|
|
* @deprecated This method is deprecated in favor of <code>setSize</code>.
|
|
*/
|
|
public void resize(int width, int height)
|
|
{
|
|
setSize(width, height);
|
|
}
|
|
|
|
/**
|
|
* Sets the size of this component to the specified value.
|
|
*
|
|
* @param dim The new size of this component.
|
|
*/
|
|
public void setSize(Dimension d)
|
|
{
|
|
setSize(d.width, d.height);
|
|
}
|
|
|
|
/**
|
|
* Sets the size of this component to the specified value.
|
|
*
|
|
* @param dim The new size of this component.
|
|
*
|
|
* @deprecated This method is deprecated in favor of <code>setSize</code>.
|
|
*/
|
|
public void resize(Dimension d)
|
|
{
|
|
setSize(d.width, d.height);
|
|
}
|
|
|
|
/**
|
|
* Returns a bounding rectangle for this component. Note that the
|
|
* returned rectange is relative to this component's parent, not to
|
|
* the screen.
|
|
*
|
|
* @return The bounding rectangle for this component.
|
|
*/
|
|
public Rectangle getBounds()
|
|
{
|
|
return new Rectangle (x, y, width, height);
|
|
}
|
|
|
|
/**
|
|
* Returns a bounding rectangle for this component. Note that the
|
|
* returned rectange is relative to this component's parent, not to
|
|
* the screen.
|
|
*
|
|
* @return The bounding rectangle for this component.
|
|
*
|
|
* @deprecated Deprecated in favor of <code>getBounds()</code>.
|
|
*/
|
|
public Rectangle bounds()
|
|
{
|
|
return getBounds();
|
|
}
|
|
|
|
/**
|
|
* Sets the bounding rectangle for this component to the specified
|
|
* values. Note that these coordinates are relative to the parent,
|
|
* not to the screen.
|
|
*
|
|
* @param x The X coordinate of the upper left corner of the rectangle.
|
|
* @param y The Y coordinate of the upper left corner of the rectangle.
|
|
* @param width The width of the rectangle.
|
|
* @param height The height of the rectangle.
|
|
*/
|
|
public void setBounds(int x, int y, int w, int h)
|
|
{
|
|
if (this.x == x
|
|
&& this.y == y
|
|
&& this.width == w
|
|
&& this.height == h)
|
|
return;
|
|
|
|
invalidate();
|
|
|
|
this.x = x;
|
|
this.y = y;
|
|
this.width = w;
|
|
this.height = h;
|
|
|
|
if (peer != null)
|
|
peer.setBounds(x, y, w, h);
|
|
}
|
|
|
|
/**
|
|
* Sets the bounding rectangle for this component to the specified
|
|
* values. Note that these coordinates are relative to the parent,
|
|
* not to the screen.
|
|
*
|
|
* @param x The X coordinate of the upper left corner of the rectangle.
|
|
* @param y The Y coordinate of the upper left corner of the rectangle.
|
|
* @param width The width of the rectangle.
|
|
* @param height The height of the rectangle.
|
|
*
|
|
* @deprecated This method is deprecated in favor of
|
|
* <code>setBounds(int, int, int, int)</code>.
|
|
*/
|
|
public void reshape(int x, int y, int width, int height)
|
|
{
|
|
setBounds(x, y, width, height);
|
|
}
|
|
|
|
/**
|
|
* Sets the bounding rectangle for this component to the specified
|
|
* rectangle. Note that these coordinates are relative to the parent,
|
|
* not to the screen.
|
|
*
|
|
* @param bounding_rectangle The new bounding rectangle.
|
|
*/
|
|
public void setBounds(Rectangle r)
|
|
{
|
|
setBounds(r.x, r.y, r.width, r.height);
|
|
}
|
|
|
|
/** @since 1.2 */
|
|
public int getX()
|
|
{
|
|
return x;
|
|
}
|
|
|
|
/** @since 1.2 */
|
|
public int getY()
|
|
{
|
|
return y;
|
|
}
|
|
|
|
/** @since 1.2 */
|
|
public int getWidth()
|
|
{
|
|
return width;
|
|
}
|
|
|
|
/** @since 1.2 */
|
|
public int getHeight()
|
|
{
|
|
return height;
|
|
}
|
|
|
|
public Rectangle getBounds(Rectangle r)
|
|
{
|
|
r.x = this.x;
|
|
r.y = this.y;
|
|
r.width = this.width;
|
|
r.height = this.height;
|
|
return r;
|
|
}
|
|
|
|
public Dimension getSize(Dimension d)
|
|
{
|
|
d.width = this.width;
|
|
d.height = this.height;
|
|
return d;
|
|
}
|
|
|
|
public Point getLocation(Point p)
|
|
{
|
|
p.x = x;
|
|
p.y = y;
|
|
return p;
|
|
}
|
|
|
|
/** @since 1.2 */
|
|
public boolean isOpaque()
|
|
{
|
|
return !isLightweight();
|
|
}
|
|
|
|
/**
|
|
* Return whether the component is lightweight.
|
|
*
|
|
* @return true if component has a peer and and the peer is lightweight.
|
|
*
|
|
* @since 1.2
|
|
*/
|
|
public boolean isLightweight()
|
|
{
|
|
return (peer != null) && (peer instanceof LightweightPeer);
|
|
}
|
|
|
|
/**
|
|
* Returns the component's preferred size.
|
|
*
|
|
* @return The component's preferred size.
|
|
*/
|
|
public Dimension getPreferredSize()
|
|
{
|
|
if (peer == null)
|
|
return new Dimension(width, height);
|
|
else
|
|
return peer.getPreferredSize();
|
|
}
|
|
|
|
/**
|
|
* Returns the component's preferred size.
|
|
*
|
|
* @return The component's preferred size.
|
|
*
|
|
* @deprecated Deprecated in favor of <code>getPreferredSize()</code>.
|
|
*/
|
|
public Dimension preferredSize()
|
|
{
|
|
return getPreferredSize();
|
|
}
|
|
|
|
/**
|
|
* Returns the component's minimum size.
|
|
*
|
|
* @return The component's minimum size.
|
|
*/
|
|
public Dimension getMinimumSize()
|
|
{
|
|
if (peer == null)
|
|
return new Dimension(width, height);
|
|
else
|
|
return peer.getMinimumSize();
|
|
}
|
|
|
|
/**
|
|
* Returns the component's minimum size.
|
|
*
|
|
* @return The component's minimum size.
|
|
*
|
|
* @deprecated Deprecated in favor of <code>getMinimumSize()</code>
|
|
*/
|
|
public Dimension minimumSize()
|
|
{
|
|
return getMinimumSize();
|
|
}
|
|
|
|
/**
|
|
* Returns the component's maximum size.
|
|
*
|
|
* @return The component's maximum size.
|
|
*/
|
|
public Dimension getMaximumSize()
|
|
{
|
|
return new Dimension(Integer.MAX_VALUE, Integer.MAX_VALUE);
|
|
}
|
|
|
|
/**
|
|
* Returns the preferred horizontal alignment of this component. The
|
|
* value returned will be one of the constants defined in this class.
|
|
*
|
|
* @return The preferred horizontal alignment of this component.
|
|
*/
|
|
public float getAlignmentX()
|
|
{
|
|
return CENTER_ALIGNMENT;
|
|
}
|
|
|
|
/**
|
|
* Returns the preferred vertical alignment of this component. The
|
|
* value returned will be one of the constants defined in this class.
|
|
*
|
|
* @return The preferred vertical alignment of this component.
|
|
*/
|
|
public float getAlignmentY()
|
|
{
|
|
return CENTER_ALIGNMENT;
|
|
}
|
|
|
|
/**
|
|
* Calls the layout manager to re-layout the component. This is called
|
|
* during validation of a container in most cases.
|
|
*/
|
|
public void doLayout()
|
|
{
|
|
// nothing to do unless we're a container
|
|
}
|
|
|
|
/**
|
|
* Calls the layout manager to re-layout the component. This is called
|
|
* during validation of a container in most cases.
|
|
*
|
|
* @deprecated This method is deprecated in favor of <code>doLayout()</code>.
|
|
*/
|
|
public void layout()
|
|
{
|
|
doLayout();
|
|
}
|
|
|
|
/**
|
|
* Called to ensure that the layout for this component is valid.
|
|
*/
|
|
public void validate()
|
|
{
|
|
valid = true;
|
|
}
|
|
|
|
/**
|
|
* Invalidates this component and all of its parent components. This will
|
|
* cause them to have their layout redone.
|
|
*/
|
|
public void invalidate()
|
|
{
|
|
valid = false;
|
|
|
|
if ((parent != null) && parent.valid)
|
|
parent.invalidate ();
|
|
}
|
|
|
|
/**
|
|
* Returns a graphics object for this component. Returns <code>null</code>
|
|
* if this component is not currently displayed on the screen.
|
|
*
|
|
* @return A graphics object for this component.
|
|
*/
|
|
public Graphics getGraphics()
|
|
{
|
|
if (peer != null)
|
|
{
|
|
Graphics gfx = peer.getGraphics();
|
|
if (gfx != null)
|
|
return gfx;
|
|
|
|
// create graphics for lightweight:
|
|
Container parent = getParent();
|
|
if (parent != null)
|
|
{
|
|
gfx = parent.getGraphics();
|
|
Rectangle bounds = getBounds();
|
|
gfx.setClip(bounds);
|
|
gfx.translate(bounds.x, bounds.y);
|
|
return gfx;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Returns the font metrics for the specified font in this component.
|
|
*
|
|
* @param font The font to retrieve metrics for.
|
|
*
|
|
* @return The font metrics for the specified font.
|
|
*/
|
|
public FontMetrics getFontMetrics(Font font)
|
|
{
|
|
if (peer == null)
|
|
return getToolkit().getFontMetrics(font);
|
|
return peer.getFontMetrics (font);
|
|
}
|
|
|
|
/**
|
|
* Sets the cursor for this component to the specified cursor.
|
|
*
|
|
* @param cursor The new cursor for this component.
|
|
*/
|
|
public void setCursor(Cursor cursor)
|
|
{
|
|
this.cursor = cursor;
|
|
if (peer != null)
|
|
peer.setCursor (cursor);
|
|
}
|
|
|
|
/**
|
|
* Returns the cursor for this component.
|
|
*
|
|
* @return The cursor for this component.
|
|
*/
|
|
public Cursor getCursor()
|
|
{
|
|
return this.cursor;
|
|
}
|
|
|
|
/**
|
|
* Paints this component on the screen. The clipping region in the
|
|
* graphics context will indicate the region that requires painting.
|
|
*
|
|
* @param graphics The graphics context for this paint job.
|
|
*/
|
|
public void paint(Graphics g)
|
|
{
|
|
}
|
|
|
|
/**
|
|
* Updates this component. This method fills the component
|
|
* with the background color, then sets the foreground color of the
|
|
* specified graphics context to the foreground color of this component
|
|
* and calls the <code>paint()</code> method.
|
|
* // FIXME: What are the coords relative to?
|
|
*
|
|
* @param graphics The graphics context for this update.
|
|
*/
|
|
public void update(Graphics g)
|
|
{
|
|
paint(g);
|
|
}
|
|
|
|
/**
|
|
* Paints this entire component, including any sub-components.
|
|
*
|
|
* @param graphics The graphics context for this paint job.
|
|
*/
|
|
public void paintAll(Graphics g)
|
|
{
|
|
if (!visible)
|
|
return;
|
|
|
|
if (peer != null)
|
|
peer.paint(g);
|
|
paint(g);
|
|
}
|
|
|
|
/**
|
|
* Repaint this entire component. The <code>update()</code> method
|
|
* on this component will be called as soon as possible.
|
|
* // FIXME: What are the coords relative to?
|
|
*/
|
|
public void repaint()
|
|
{
|
|
repaint(0, 0, 0, getWidth(), getHeight());
|
|
}
|
|
|
|
/**
|
|
* Repaint this entire component. The <code>update()</code> method
|
|
* on this component will be called in approximate the specified number
|
|
* of milliseconds.
|
|
* // FIXME: What are the coords relative to?
|
|
*
|
|
* @param tm The number of milliseconds before this component should
|
|
* be repainted.
|
|
*/
|
|
public void repaint(long tm)
|
|
{
|
|
repaint(tm, 0, 0, getWidth(), getHeight());
|
|
}
|
|
|
|
/**
|
|
* Repaints the specified rectangular region within this component.
|
|
* This <code>update</code> method on this component will be called as
|
|
* soon as possible.
|
|
* // FIXME: What are the coords relative to?
|
|
*
|
|
* @param x The X coordinate of the upper left of the region to repaint
|
|
* @param y The Y coordinate of the upper left of the region to repaint
|
|
* @param width The width of the region to repaint.
|
|
* @param height The height of the region to repaint.
|
|
*/
|
|
public void repaint(int x, int y, int width, int height)
|
|
{
|
|
repaint(0, x, y, width, height);
|
|
}
|
|
|
|
/**
|
|
* Repaints the specified rectangular region within this component.
|
|
* This <code>update</code> method on this component will be called in
|
|
* approximately the specified number of milliseconds.
|
|
* // FIXME: What are the coords relative to?
|
|
*
|
|
* @param tm The number of milliseconds before this component should
|
|
* be repainted.
|
|
* @param x The X coordinate of the upper left of the region to repaint
|
|
* @param y The Y coordinate of the upper left of the region to repaint
|
|
* @param width The width of the region to repaint.
|
|
* @param height The height of the region to repaint.
|
|
*/
|
|
public void repaint(long tm, int x, int y, int width, int height)
|
|
{
|
|
// Handle lightweight repainting by forwarding to native parent
|
|
if (isLightweight() && (parent != null))
|
|
{
|
|
if (parent != null)
|
|
parent.repaint(tm, x+getX(), y+getY(), width, height);
|
|
return;
|
|
}
|
|
|
|
if (peer != null)
|
|
peer.repaint(tm, x, y, width, height);
|
|
}
|
|
|
|
/**
|
|
* Prints this component. This method is
|
|
* provided so that printing can be done in a different manner from
|
|
* painting. However, the implementation in this class simply calls
|
|
* the <code>paint()</code> method.
|
|
*
|
|
* @param graphics The graphics context of the print device.
|
|
*/
|
|
public void print(Graphics g)
|
|
{
|
|
paint(g);
|
|
}
|
|
|
|
/**
|
|
* Prints this component, including all sub-components. This method is
|
|
* provided so that printing can be done in a different manner from
|
|
* painting. However, the implementation in this class simply calls
|
|
* the <code>paintAll()</code> method.
|
|
*
|
|
* @param graphics The graphics context of the print device.
|
|
*/
|
|
public void printAll(Graphics g)
|
|
{
|
|
paintAll(g);
|
|
}
|
|
|
|
/**
|
|
* Called when an image has changed so that this component is
|
|
* repainted.
|
|
*
|
|
* @param image The image that has been updated.
|
|
* @param flags Flags as specified in <code>ImageObserver</code>.
|
|
* @param x The X coordinate
|
|
* @param y The Y coordinate
|
|
* @param width The width
|
|
* @param height The height
|
|
*
|
|
* @return <code>true</code> if the image has been fully loaded,
|
|
* <code>false</code> otherwise.
|
|
*/
|
|
public boolean imageUpdate (Image img, int infoflags, int x, int y,
|
|
int w, int h)
|
|
{
|
|
// FIXME
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Creates an image from the specified producer.
|
|
*
|
|
* @param producer The image procedure to create the image from.
|
|
*
|
|
* @return The resulting image.
|
|
*/
|
|
public Image createImage(ImageProducer producer)
|
|
{
|
|
return peer.createImage(producer);
|
|
}
|
|
|
|
/**
|
|
* Creates an image with the specified width and height for use in
|
|
* double buffering.
|
|
*
|
|
* @param width The width of the image.
|
|
* @param height The height of the image.
|
|
*
|
|
* @return The requested image.
|
|
*/
|
|
public Image createImage(int width, int height)
|
|
{
|
|
return getGraphicsConfiguration().createCompatibleImage(width, height);
|
|
}
|
|
|
|
/**
|
|
* Prepares the specified image for rendering on this component.
|
|
*
|
|
* @param image The image to prepare for rendering.
|
|
* @param observer The image observer to notify of the status of the
|
|
* image preparation.
|
|
*
|
|
* @return <code>true</code> if the image is already fully prepared
|
|
* for rendering, <code>false</code> otherwise.
|
|
*/
|
|
public boolean prepareImage(Image image, ImageObserver observer)
|
|
{
|
|
return prepareImage(image, image.getWidth(observer),
|
|
image.getHeight(observer), observer);
|
|
}
|
|
|
|
/**
|
|
* Prepares the specified image for rendering on this component at the
|
|
* specified scaled width and height
|
|
*
|
|
* @param image The image to prepare for rendering.
|
|
* @param width The scaled width of the image.
|
|
* @param height The scaled height of the image.
|
|
* @param observer The image observer to notify of the status of the
|
|
* image preparation.
|
|
*
|
|
* @return <code>true</code> if the image is already fully prepared
|
|
* for rendering, <code>false</code> otherwise.
|
|
*/
|
|
public boolean prepareImage(Image image, int width, int height,
|
|
ImageObserver observer)
|
|
{
|
|
return peer.prepareImage(image, width, height, observer);
|
|
}
|
|
|
|
/**
|
|
* Returns the status of the loading of the specified image. The value
|
|
* returned will be those flags defined in <code>ImageObserver</code>.
|
|
*
|
|
* @param image The image to check on.
|
|
* @param observer The observer to be notified as the image loading
|
|
* progresses.
|
|
*
|
|
* @return The image observer flags indicating the status of the load.
|
|
*/
|
|
public int checkImage(Image image, ImageObserver observer)
|
|
{
|
|
return checkImage(image, image.getWidth(observer),
|
|
image.getHeight(observer), observer);
|
|
}
|
|
|
|
/**
|
|
* Returns the status of the loading of the specified image. The value
|
|
* returned will be those flags defined in <code>ImageObserver</code>.
|
|
*
|
|
* @param image The image to check on.
|
|
* @param width The scaled image width.
|
|
* @param height The scaled image height.
|
|
* @param observer The observer to be notified as the image loading
|
|
* progresses.
|
|
*
|
|
* @return The image observer flags indicating the status of the load.
|
|
*/
|
|
public int checkImage (Image image, int width, int height,
|
|
ImageObserver observer)
|
|
{
|
|
if (peer != null)
|
|
return peer.checkImage (image, width, height, observer);
|
|
return getToolkit ().checkImage (image, width, height, observer);
|
|
}
|
|
|
|
/**
|
|
* Tests whether or not the specified point is contained within this
|
|
* component. Coordinates are relative to this component.
|
|
*
|
|
* @param x The X coordinate of the point to test.
|
|
* @param y The Y coordinate of the point to test.
|
|
*
|
|
* @return <code>true</code> if the point is within this component,
|
|
* <code>false</code> otherwise.
|
|
*/
|
|
public boolean contains (int x, int y)
|
|
{
|
|
return (x >= 0) && (y >= 0) && (x < width) && (y < height);
|
|
}
|
|
|
|
/**
|
|
* Tests whether or not the specified point is contained within this
|
|
* component. Coordinates are relative to this component.
|
|
*
|
|
* @param x The X coordinate of the point to test.
|
|
* @param y The Y coordinate of the point to test.
|
|
*
|
|
* @return <code>true</code> if the point is within this component,
|
|
* <code>false</code> otherwise.
|
|
*
|
|
* @deprecated Deprecated in favor of <code>contains(int, int)</code>.
|
|
*/
|
|
public boolean inside(int x, int y)
|
|
{
|
|
return contains(x,y);
|
|
}
|
|
|
|
/**
|
|
* Tests whether or not the specified point is contained within this
|
|
* component. Coordinates are relative to this component.
|
|
*
|
|
* @param point The point to test.
|
|
*
|
|
* @return <code>true</code> if the point is within this component,
|
|
* <code>false</code> otherwise.
|
|
*/
|
|
public boolean contains(Point p)
|
|
{
|
|
return contains(p.x, p.y);
|
|
}
|
|
|
|
/**
|
|
* Returns the component occupying the position (x,y). This will either
|
|
* be this component, an immediate child component, or <code>null</code>
|
|
* if neither of the first two occupies the specified location.
|
|
*
|
|
* @param x The X coordinate to search for components at.
|
|
* @param y The Y coordinate to search for components at.
|
|
*
|
|
* @return The component at the specified location, for <code>null</code>
|
|
* if there is none.
|
|
*/
|
|
public Component getComponentAt(int x, int y)
|
|
{
|
|
if (contains(x,y))
|
|
return this;
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Returns the component occupying the position (x,y). This will either
|
|
* be this component, an immediate child component, or <code>null</code>
|
|
* if neither of the first two occupies the specified location.
|
|
*
|
|
* @param x The X coordinate to search for components at.
|
|
* @param y The Y coordinate to search for components at.
|
|
*
|
|
* @return The component at the specified location, for <code>null</code>
|
|
* if there is none.
|
|
*
|
|
* @deprecated The method is deprecated in favor of
|
|
* <code>getComponentAt()</code>.
|
|
*/
|
|
public Component locate(int x, int y)
|
|
{
|
|
return getComponentAt(x, y);
|
|
}
|
|
|
|
/**
|
|
* Returns the component occupying the specified point This will either
|
|
* be this component, an immediate child component, or <code>null</code>
|
|
* if neither of the first two occupies the specified location.
|
|
*
|
|
* @param point The point to search for components at.
|
|
*
|
|
* @return The component at the specified location, for <code>null</code>
|
|
* if there is none.
|
|
*/
|
|
public Component getComponentAt(Point p)
|
|
{
|
|
return getComponentAt(p.x, p.y);
|
|
}
|
|
|
|
/**
|
|
* AWT 1.0 event dispatcher.
|
|
*
|
|
* @deprecated Deprecated in favor of <code>dispatchEvent()</code>.
|
|
*/
|
|
public void deliverEvent(Event e)
|
|
{
|
|
}
|
|
|
|
/** Forward AWT events to processEvent() if:
|
|
* - Events have been enabled for this type of event via enableEvents(),
|
|
* OR:
|
|
* - There is at least one registered listener for this type of event
|
|
*
|
|
* @param event The event to dispatch
|
|
*
|
|
* @specnote This method is final, but we need to be able to
|
|
* override it in order to handle other event types in our
|
|
* subclasses. The solution is to define a second, non-final
|
|
* method - dispatchEventImpl() - to actually do the work.
|
|
* Investigations with Thread.dumpStack() on the dispatch thread
|
|
* in JDK 1.3 show Sun's implementation is doing the same
|
|
* thing.
|
|
*/
|
|
public final void dispatchEvent(AWTEvent e)
|
|
{
|
|
dispatchEventImpl(e);
|
|
|
|
/* Give the peer a chance to handle the event. */
|
|
if (peer != null)
|
|
peer.handleEvent(e);
|
|
}
|
|
|
|
void dispatchEventImpl(AWTEvent e)
|
|
{
|
|
// Make use of event id's in order to avoid multiple instanceof tests.
|
|
if (e.id <= ComponentEvent.COMPONENT_LAST
|
|
&& e.id >= ComponentEvent.COMPONENT_FIRST
|
|
&& (componentListener != null
|
|
|| (eventMask & AWTEvent.COMPONENT_EVENT_MASK) != 0))
|
|
processEvent(e);
|
|
else if (e.id <= KeyEvent.KEY_LAST
|
|
&& e.id >= KeyEvent.KEY_FIRST
|
|
&& (keyListener != null
|
|
|| (eventMask & AWTEvent.KEY_EVENT_MASK) != 0))
|
|
processEvent(e);
|
|
else if (e.id <= MouseEvent.MOUSE_LAST
|
|
&& e.id >= MouseEvent.MOUSE_FIRST
|
|
&& (mouseListener != null
|
|
|| mouseMotionListener != null
|
|
|| (eventMask & AWTEvent.MOUSE_EVENT_MASK) != 0))
|
|
processEvent(e);
|
|
else if (e.id <= FocusEvent.FOCUS_LAST
|
|
&& e.id >= FocusEvent.FOCUS_FIRST
|
|
&& (focusListener != null
|
|
|| (eventMask & AWTEvent.FOCUS_EVENT_MASK) != 0))
|
|
processEvent(e);
|
|
else if (e.id <= InputMethodEvent.INPUT_METHOD_LAST
|
|
&& e.id >= InputMethodEvent.INPUT_METHOD_FIRST
|
|
&& (inputMethodListener != null
|
|
|| (eventMask & AWTEvent.INPUT_METHOD_EVENT_MASK) != 0))
|
|
processEvent(e);
|
|
else if (e.id <= HierarchyEvent.HIERARCHY_LAST
|
|
&& e.id >= HierarchyEvent.HIERARCHY_FIRST
|
|
&& (hierarchyListener != null
|
|
|| hierarchyBoundsListener != null
|
|
|| (eventMask & AWTEvent.HIERARCHY_EVENT_MASK) != 0))
|
|
processEvent(e);
|
|
else if (e.id <= PaintEvent.PAINT_LAST
|
|
&& e.id >= PaintEvent.PAINT_FIRST
|
|
&& (eventMask & AWTEvent.PAINT_EVENT_MASK) != 0)
|
|
processEvent(e);
|
|
}
|
|
|
|
/**
|
|
* AWT 1.0 event dispatcher.
|
|
*
|
|
* @deprecated Deprecated in favor of <code>dispatchEvent()</code>.
|
|
*/
|
|
public boolean postEvent(Event e)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Adds the specified listener to this component.
|
|
*
|
|
* @param listener The new listener to add.
|
|
*/
|
|
public synchronized void addComponentListener(ComponentListener l)
|
|
{
|
|
componentListener = AWTEventMulticaster.add(componentListener, l);
|
|
if (componentListener != null)
|
|
enableEvents(AWTEvent.COMPONENT_EVENT_MASK);
|
|
}
|
|
|
|
/**
|
|
* Removes the specified listener from the component.
|
|
*
|
|
* @param listener The listener to remove.
|
|
*/
|
|
public synchronized void removeComponentListener(ComponentListener l)
|
|
{
|
|
componentListener = AWTEventMulticaster.remove(componentListener, l);
|
|
}
|
|
|
|
/**
|
|
* Adds the specified listener to this component.
|
|
*
|
|
* @param listener The new listener to add.
|
|
*/
|
|
public synchronized void addFocusListener(FocusListener l)
|
|
{
|
|
focusListener = AWTEventMulticaster.add(focusListener, l);
|
|
if (focusListener != null)
|
|
enableEvents(AWTEvent.FOCUS_EVENT_MASK);
|
|
}
|
|
|
|
/**
|
|
* Removes the specified listener from the component.
|
|
*
|
|
* @param listener The listener to remove.
|
|
*/
|
|
public synchronized void removeFocusListener(FocusListener l)
|
|
{
|
|
focusListener = AWTEventMulticaster.remove(focusListener, l);
|
|
}
|
|
|
|
/** @since 1.3 */
|
|
public synchronized void addHierarchyListener(HierarchyListener l)
|
|
{
|
|
hierarchyListener = AWTEventMulticaster.add(hierarchyListener, l);
|
|
if (hierarchyListener != null)
|
|
enableEvents(AWTEvent.HIERARCHY_EVENT_MASK);
|
|
}
|
|
|
|
/** @since 1.3 */
|
|
public synchronized void removeHierarchyListener(HierarchyListener l)
|
|
{
|
|
hierarchyListener = AWTEventMulticaster.remove(hierarchyListener, l);
|
|
}
|
|
|
|
/** @since 1.3 */
|
|
public synchronized void addHierarchyBoundsListener(HierarchyBoundsListener l)
|
|
{
|
|
hierarchyBoundsListener =
|
|
AWTEventMulticaster.add(hierarchyBoundsListener, l);
|
|
if (hierarchyBoundsListener != null)
|
|
enableEvents(AWTEvent.HIERARCHY_EVENT_MASK);
|
|
}
|
|
|
|
/** @since 1.3 */
|
|
public synchronized void
|
|
removeHierarchyBoundsListener(HierarchyBoundsListener l)
|
|
{
|
|
hierarchyBoundsListener =
|
|
AWTEventMulticaster.remove(hierarchyBoundsListener, l);
|
|
}
|
|
|
|
/**
|
|
* Adds the specified listener to this component.
|
|
*
|
|
* @param listener The new listener to add.
|
|
*/
|
|
public synchronized void addKeyListener(KeyListener l)
|
|
{
|
|
keyListener = AWTEventMulticaster.add(keyListener, l);
|
|
if (keyListener != null)
|
|
enableEvents(AWTEvent.KEY_EVENT_MASK);
|
|
}
|
|
|
|
/**
|
|
* Removes the specified listener from the component.
|
|
*
|
|
* @param listener The listener to remove.
|
|
*/
|
|
public synchronized void removeKeyListener(KeyListener l)
|
|
{
|
|
keyListener = AWTEventMulticaster.remove(keyListener, l);
|
|
}
|
|
|
|
/**
|
|
* Adds the specified listener to this component.
|
|
*
|
|
* @param listener The new listener to add.
|
|
*/
|
|
public synchronized void addMouseListener(MouseListener l)
|
|
{
|
|
mouseListener = AWTEventMulticaster.add(mouseListener, l);
|
|
if (mouseListener != null)
|
|
enableEvents(AWTEvent.MOUSE_EVENT_MASK);
|
|
}
|
|
|
|
/**
|
|
* Removes the specified listener from the component.
|
|
*
|
|
* @param listener The listener to remove.
|
|
*/
|
|
public synchronized void removeMouseListener(MouseListener l)
|
|
{
|
|
mouseListener = AWTEventMulticaster.remove(mouseListener, l);
|
|
}
|
|
|
|
/**
|
|
* Adds the specified listener to this component.
|
|
*
|
|
* @param listener The new listener to add.
|
|
*/
|
|
public synchronized void addMouseMotionListener(MouseMotionListener l)
|
|
{
|
|
mouseMotionListener = AWTEventMulticaster.add(mouseMotionListener, l);
|
|
if (mouseMotionListener != null)
|
|
enableEvents(AWTEvent.MOUSE_EVENT_MASK);
|
|
}
|
|
|
|
/**
|
|
* Removes the specified listener from the component.
|
|
*
|
|
* @param listener The listener to remove.
|
|
*/
|
|
public synchronized void removeMouseMotionListener(MouseMotionListener l)
|
|
{
|
|
mouseMotionListener = AWTEventMulticaster.remove(mouseMotionListener, l);
|
|
}
|
|
|
|
/** @since 1.2 */
|
|
public synchronized void addInputMethodListener(InputMethodListener l)
|
|
{
|
|
inputMethodListener = AWTEventMulticaster.add(inputMethodListener, l);
|
|
if (inputMethodListener != null)
|
|
enableEvents(AWTEvent.INPUT_METHOD_EVENT_MASK);
|
|
}
|
|
|
|
/** @since 1.2 */
|
|
public synchronized void removeInputMethodListener(InputMethodListener l)
|
|
{
|
|
inputMethodListener = AWTEventMulticaster.remove(inputMethodListener, l);
|
|
}
|
|
|
|
/** Returns all registered EventListers of the given listenerType.
|
|
* listenerType must be a subclass of EventListener, or a
|
|
* ClassClassException is thrown.
|
|
* @since 1.3
|
|
*/
|
|
public EventListener[] getListeners(Class listenerType)
|
|
{
|
|
if (listenerType == ComponentListener.class)
|
|
return getListenersImpl(listenerType, componentListener);
|
|
else if (listenerType == FocusListener.class)
|
|
return getListenersImpl(listenerType, focusListener);
|
|
else if (listenerType == KeyListener.class)
|
|
return getListenersImpl(listenerType, keyListener);
|
|
else if (listenerType == MouseListener.class)
|
|
return getListenersImpl(listenerType, mouseListener);
|
|
else if (listenerType == MouseMotionListener.class)
|
|
return getListenersImpl(listenerType, mouseMotionListener);
|
|
else if (listenerType == InputMethodListener.class)
|
|
return getListenersImpl(listenerType, inputMethodListener);
|
|
else if (listenerType == HierarchyListener.class)
|
|
return getListenersImpl(listenerType, hierarchyListener);
|
|
else if (listenerType == HierarchyBoundsListener.class)
|
|
return getListenersImpl(listenerType, hierarchyBoundsListener);
|
|
else
|
|
return getListenersImpl(listenerType, null);
|
|
}
|
|
|
|
static EventListener[] getListenersImpl(Class listenerType, EventListener el)
|
|
{
|
|
if (! EventListener.class.isAssignableFrom(listenerType))
|
|
throw new ClassCastException();
|
|
|
|
Vector v = new Vector();
|
|
if (el != null)
|
|
getListenerList (el, v);
|
|
EventListener[] el_a = (EventListener[]) Array.newInstance(listenerType,
|
|
v.size());
|
|
v.copyInto(el_a);
|
|
return el_a;
|
|
}
|
|
|
|
static void getListenerList(EventListener el, Vector v)
|
|
{
|
|
if (el instanceof AWTEventMulticaster)
|
|
{
|
|
AWTEventMulticaster mc = (AWTEventMulticaster) el;
|
|
getListenerList(mc.a, v);
|
|
getListenerList(mc.b, v);
|
|
}
|
|
else
|
|
v.addElement(el);
|
|
}
|
|
|
|
// The input method framework is currently unimplemented.
|
|
// /** @since 1.2 */
|
|
//
|
|
//public InputMethodRequests getInputMethodRequests()
|
|
//
|
|
// /** @since 1.2 */
|
|
//
|
|
// public InputContext getInputContext()
|
|
|
|
/**
|
|
* Enables the specified events. The events to enable are specified
|
|
* by OR-ing together the desired masks from <code>AWTEvent</code>.
|
|
* <p>
|
|
* Events are enabled by default when a listener is attached to the
|
|
* component for that event type. This method can be used by subclasses
|
|
* to ensure the delivery of a specified event regardless of whether
|
|
* or not a listener is attached.
|
|
*
|
|
* @param enable_events The desired events to enable.
|
|
*/
|
|
protected final void enableEvents(long eventsToEnable)
|
|
{
|
|
eventMask |= eventsToEnable;
|
|
// TODO: Unlike Sun's implementation, I think we should try and
|
|
// enable/disable events at the peer (gtk/X) level. This will avoid
|
|
// clogging the event pipeline with useless mousemove events that
|
|
// we arn't interested in, etc. This will involve extending the peer
|
|
// interface, but thats okay because the peer interfaces have been
|
|
// deprecated for a long time, and no longer feature in the
|
|
// API specification at all.
|
|
|
|
if (isLightweight() && (parent != null))
|
|
parent.enableEvents(eventsToEnable);
|
|
else if (peer != null)
|
|
peer.setEventMask (eventMask);
|
|
}
|
|
|
|
/**
|
|
* Disables the specified events. The events to disable are specified
|
|
* by OR-ing together the desired masks from <code>AWTEvent</code>.
|
|
*
|
|
* @param disable_events The desired events to disable.
|
|
*/
|
|
protected final void disableEvents(long eventsToDisable)
|
|
{
|
|
eventMask &= ~eventsToDisable;
|
|
// forward new event mask to peer?
|
|
}
|
|
|
|
/** coalesceEvents is called by the EventQueue if two events with the same
|
|
* event id are queued. Returns a new combined event, or null if no
|
|
* combining is done.
|
|
*/
|
|
protected AWTEvent coalesceEvents(AWTEvent existingEvent, AWTEvent newEvent)
|
|
{
|
|
switch (existingEvent.id)
|
|
{
|
|
case MouseEvent.MOUSE_MOVED:
|
|
case MouseEvent.MOUSE_DRAGGED:
|
|
// Just drop the old (intermediate) event and return the new one.
|
|
return newEvent;
|
|
case PaintEvent.PAINT:
|
|
case PaintEvent.UPDATE:
|
|
return coalescePaintEvents((PaintEvent) existingEvent,
|
|
(PaintEvent) newEvent);
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Coalesce paint events. Current heuristic is: Merge if the union of
|
|
* areas is less than twice that of the sum of the areas. The X server
|
|
* tend to create a lot of paint events that are adjacent but not
|
|
* overlapping.
|
|
*
|
|
* <pre>
|
|
* +------+
|
|
* | +-----+ ...will be merged
|
|
* | | |
|
|
* | | |
|
|
* +------+ |
|
|
* +-----+
|
|
*
|
|
* +---------------+--+
|
|
* | | | ...will not be merged
|
|
* +---------------+ |
|
|
* | |
|
|
* | |
|
|
* | |
|
|
* | |
|
|
* | |
|
|
* +--+
|
|
* </pre>
|
|
*/
|
|
private PaintEvent coalescePaintEvents(PaintEvent queuedEvent,
|
|
PaintEvent newEvent)
|
|
{
|
|
Rectangle r1 = queuedEvent.getUpdateRect();
|
|
Rectangle r2 = newEvent.getUpdateRect();
|
|
Rectangle union = r1.union(r2);
|
|
|
|
int r1a = r1.width * r1.height;
|
|
int r2a = r2.width * r2.height;
|
|
int ua = union.width * union.height;
|
|
|
|
if (ua > (r1a+r2a)*2)
|
|
return null;
|
|
/* The 2 factor should maybe be reconsidered. Perhaps 3/2
|
|
would be better? */
|
|
|
|
newEvent.setUpdateRect(union);
|
|
return newEvent;
|
|
}
|
|
|
|
/**
|
|
* Processes the specified event. In this class, this method simply
|
|
* calls one of the more specific event handlers.
|
|
*
|
|
* @param event The event to process.
|
|
*/
|
|
protected void processEvent(AWTEvent e)
|
|
{
|
|
|
|
/* Note: the order of these if statements are
|
|
important. Subclasses must be checked first. Eg. MouseEvent
|
|
must be checked before ComponentEvent, since a MouseEvent
|
|
object is also an instance of a ComponentEvent. */
|
|
|
|
if (e instanceof FocusEvent)
|
|
processFocusEvent((FocusEvent) e);
|
|
else if (e instanceof PaintEvent)
|
|
processPaintEvent((PaintEvent) e);
|
|
else if (e instanceof MouseEvent)
|
|
{
|
|
if (e.id == MouseEvent.MOUSE_MOVED
|
|
|| e.id == MouseEvent.MOUSE_DRAGGED)
|
|
processMouseMotionEvent((MouseEvent) e);
|
|
else
|
|
processMouseEvent((MouseEvent) e);
|
|
}
|
|
else if (e instanceof KeyEvent)
|
|
processKeyEvent((KeyEvent) e);
|
|
else if (e instanceof InputMethodEvent)
|
|
processInputMethodEvent((InputMethodEvent) e);
|
|
else if (e instanceof ComponentEvent)
|
|
processComponentEvent((ComponentEvent) e);
|
|
else if (e instanceof HierarchyEvent)
|
|
{
|
|
if (e.id == HierarchyEvent.HIERARCHY_CHANGED)
|
|
processHierarchyEvent((HierarchyEvent) e);
|
|
else
|
|
processHierarchyBoundsEvent((HierarchyEvent) e);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Called when a component event is dispatched and component events are
|
|
* enabled. This method passes the event along to any listeners
|
|
* that are attached.
|
|
*
|
|
* @param event The <code>ComponentEvent</code> to process.
|
|
*/
|
|
protected void processComponentEvent(ComponentEvent e)
|
|
{
|
|
if (componentListener == null)
|
|
return;
|
|
switch (e.id)
|
|
{
|
|
case ComponentEvent.COMPONENT_HIDDEN:
|
|
componentListener.componentHidden(e);
|
|
break;
|
|
|
|
case ComponentEvent.COMPONENT_MOVED:
|
|
componentListener.componentMoved(e);
|
|
break;
|
|
|
|
case ComponentEvent.COMPONENT_RESIZED:
|
|
componentListener.componentResized(e);
|
|
break;
|
|
|
|
case ComponentEvent.COMPONENT_SHOWN:
|
|
componentListener.componentShown(e);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Called when a focus event is dispatched and component events are
|
|
* enabled. This method passes the event along to any listeners
|
|
* that are attached.
|
|
*
|
|
* @param event The <code>FocusEvent</code> to process.
|
|
*/
|
|
protected void processFocusEvent(FocusEvent e)
|
|
{
|
|
if (focusListener == null)
|
|
return;
|
|
switch (e.id)
|
|
{
|
|
case FocusEvent.FOCUS_GAINED:
|
|
focusListener.focusGained(e);
|
|
break;
|
|
case FocusEvent.FOCUS_LOST:
|
|
focusListener.focusLost(e);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Called when a key event is dispatched and component events are
|
|
* enabled. This method passes the event along to any listeners
|
|
* that are attached.
|
|
*
|
|
* @param event The <code>KeyEvent</code> to process.
|
|
*/
|
|
protected void processKeyEvent(KeyEvent e)
|
|
{
|
|
if (keyListener == null)
|
|
return;
|
|
switch (e.id)
|
|
{
|
|
case KeyEvent.KEY_PRESSED:
|
|
keyListener.keyPressed(e);
|
|
break;
|
|
case KeyEvent.KEY_RELEASED:
|
|
keyListener.keyReleased(e);
|
|
break;
|
|
case KeyEvent.KEY_TYPED:
|
|
keyListener.keyTyped(e);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Called when a regular mouse event is dispatched and component events are
|
|
* enabled. This method passes the event along to any listeners
|
|
* that are attached.
|
|
*
|
|
* @param event The <code>MouseEvent</code> to process.
|
|
*/
|
|
protected void processMouseEvent(MouseEvent e)
|
|
{
|
|
if (mouseListener == null)
|
|
return;
|
|
switch (e.id)
|
|
{
|
|
case MouseEvent.MOUSE_CLICKED:
|
|
mouseListener.mouseClicked(e);
|
|
break;
|
|
case MouseEvent.MOUSE_ENTERED:
|
|
mouseListener.mouseEntered(e);
|
|
break;
|
|
case MouseEvent.MOUSE_EXITED:
|
|
mouseListener.mouseExited(e);
|
|
break;
|
|
case MouseEvent.MOUSE_PRESSED:
|
|
mouseListener.mousePressed(e);
|
|
break;
|
|
case MouseEvent.MOUSE_RELEASED:
|
|
mouseListener.mouseReleased(e);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Called when a mouse motion event is dispatched and component events are
|
|
* enabled. This method passes the event along to any listeners
|
|
* that are attached.
|
|
*
|
|
* @param event The <code>MouseMotionEvent</code> to process.
|
|
*/
|
|
protected void processMouseMotionEvent(MouseEvent e)
|
|
{
|
|
if (mouseMotionListener == null)
|
|
return;
|
|
switch (e.id)
|
|
{
|
|
case MouseEvent.MOUSE_DRAGGED:
|
|
mouseMotionListener.mouseDragged(e);
|
|
break;
|
|
case MouseEvent.MOUSE_MOVED:
|
|
mouseMotionListener.mouseMoved(e);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/** @since 1.2 */
|
|
protected void processInputMethodEvent(InputMethodEvent e)
|
|
{
|
|
if (inputMethodListener == null)
|
|
return;
|
|
switch (e.id)
|
|
{
|
|
case InputMethodEvent.CARET_POSITION_CHANGED:
|
|
inputMethodListener.caretPositionChanged(e);
|
|
break;
|
|
case InputMethodEvent.INPUT_METHOD_TEXT_CHANGED:
|
|
inputMethodListener.inputMethodTextChanged(e);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/** @since 1.3 */
|
|
protected void processHierarchyEvent(HierarchyEvent e)
|
|
{
|
|
if (hierarchyListener == null)
|
|
return;
|
|
if (e.id == HierarchyEvent.HIERARCHY_CHANGED)
|
|
hierarchyListener.hierarchyChanged(e);
|
|
}
|
|
|
|
/** @since 1.3 */
|
|
protected void processHierarchyBoundsEvent(HierarchyEvent e)
|
|
{
|
|
if (hierarchyBoundsListener == null)
|
|
return;
|
|
switch (e.id)
|
|
{
|
|
case HierarchyEvent.ANCESTOR_MOVED:
|
|
hierarchyBoundsListener.ancestorMoved(e);
|
|
break;
|
|
case HierarchyEvent.ANCESTOR_RESIZED:
|
|
hierarchyBoundsListener.ancestorResized(e);
|
|
break;
|
|
}
|
|
}
|
|
|
|
private void processPaintEvent(PaintEvent event)
|
|
{
|
|
// Can't do graphics without peer
|
|
if (peer == null)
|
|
return;
|
|
|
|
Graphics gfx = getGraphics();
|
|
Shape clip = event.getUpdateRect();
|
|
gfx.setClip(clip);
|
|
|
|
switch (event.id)
|
|
{
|
|
case PaintEvent.PAINT:
|
|
paint(gfx);
|
|
break;
|
|
case PaintEvent.UPDATE:
|
|
update(gfx);
|
|
break;
|
|
default:
|
|
throw new IllegalArgumentException("unknown paint event");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* AWT 1.0 event processor.
|
|
*
|
|
* @deprecated Deprecated in favor of <code>processEvent</code>.
|
|
*/
|
|
public boolean handleEvent(Event evt)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* AWT 1.0 mouse event.
|
|
*
|
|
* @deprecated Deprecated in favor of <code>processMouseEvent()</code>.
|
|
*/
|
|
public boolean mouseDown(Event evt, int x, int y)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* AWT 1.0 mouse event.
|
|
*
|
|
* @deprecated Deprecated in favor of <code>processMouseMotionEvent()</code>.
|
|
*/
|
|
public boolean mouseDrag(Event evt, int x, int y)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* AWT 1.0 mouse event.
|
|
*
|
|
* @deprecated Deprecated in favor of <code>processMouseEvent()</code>.
|
|
*/
|
|
public boolean mouseUp(Event evt, int x, int y)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* AWT 1.0 mouse event.
|
|
*
|
|
* @deprecated Deprecated in favor of <code>processMouseMotionEvent()</code>.
|
|
*/
|
|
public boolean mouseMove(Event evt, int x, int y)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* AWT 1.0 mouse event.
|
|
*
|
|
* @deprecated Deprecated in favor of <code>processMouseEvent()</code>.
|
|
*/
|
|
public boolean mouseEnter(Event evt, int x, int y)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* AWT 1.0 mouse event.
|
|
*
|
|
* @deprecated Deprecated in favor of <code>processMouseEvent()</code>.
|
|
*/
|
|
public boolean mouseExit(Event evt, int x, int y)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* AWT 1.0 key press event.
|
|
*
|
|
* @deprecated Deprecated in favor of <code>processKeyEvent</code>.
|
|
*/
|
|
public boolean keyDown(Event evt, int key)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* AWT 1.0 key press event.
|
|
*
|
|
* @deprecated Deprecated in favor of <code>processKeyEvent</code>.
|
|
*/
|
|
public boolean keyUp(Event evt, int key)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* AWT 1.0 action event processor.
|
|
*
|
|
* @deprecated Deprecated in favor of the <code>ActionListener</code>
|
|
* interface.
|
|
*/
|
|
public boolean action(Event evt, Object what)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Called to inform this component it has been added to a container.
|
|
* A native peer - if any - is created at this time. This method is
|
|
* called automatically by the AWT system and should not be called by
|
|
* user level code.
|
|
*/
|
|
public void addNotify()
|
|
{
|
|
if (peer == null)
|
|
peer = getToolkit().createComponent(this);
|
|
|
|
/* Now that all the children has gotten their peers, we should
|
|
have the event mask needed for this component and its
|
|
lightweight subcomponents. */
|
|
|
|
peer.setEventMask(eventMask);
|
|
|
|
/* We do not invalidate here, but rather leave that job up to
|
|
the peer. For efficiency, the peer can choose not to
|
|
invalidate if it is happy with the current dimensions,
|
|
etc. */
|
|
}
|
|
|
|
/**
|
|
* Called to inform this component is has been removed from its
|
|
* container. Its native peer - if any - is destroyed at this time.
|
|
* This method is called automatically by the AWT system and should
|
|
* not be called by user level code.
|
|
*/
|
|
public void removeNotify()
|
|
{
|
|
if (peer != null)
|
|
peer.dispose();
|
|
peer = null;
|
|
}
|
|
|
|
/** @deprecated */
|
|
public boolean gotFocus(Event evt, Object what)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/** @deprecated */
|
|
public boolean lostFocus(Event evt, Object what)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Tests whether or not this component is in the group that can
|
|
* be traversed using the keyboard traversal mechanism (such as the TAB
|
|
* key).
|
|
*
|
|
* @return <code>true</code> if the component is traversed via the TAB
|
|
* key, <code>false</code> otherwise.
|
|
*/
|
|
public boolean isFocusTraversable()
|
|
{
|
|
return enabled && visible && (peer == null || peer.isFocusTraversable ());
|
|
}
|
|
|
|
/**
|
|
* Requests that this component be given focus. The <code>gotFocus()</code>
|
|
* method on this event will be called when and if this request was
|
|
* successful.
|
|
*/
|
|
public void requestFocus()
|
|
{
|
|
// If there's no peer then this component can't get the focus. We
|
|
// treat it as a silent rejection of the request.
|
|
if (peer != null)
|
|
peer.requestFocus ();
|
|
}
|
|
|
|
// This method is used to implement transferFocus().
|
|
// CHILD is the child making the request.
|
|
// This is overridden by Container; when called for an ordinary
|
|
// component there is no child and so we always return null.
|
|
Component findNextFocusComponent (Component child)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Transfers focus to the next component in the focus traversal order.
|
|
*/
|
|
public void transferFocus()
|
|
{
|
|
Component next;
|
|
if (parent == null)
|
|
next = findNextFocusComponent (null);
|
|
else
|
|
next = parent.findNextFocusComponent (this);
|
|
if (next != null && next != this)
|
|
next.requestFocus ();
|
|
}
|
|
|
|
/**
|
|
* AWT 1.0 focus event processor.
|
|
*
|
|
* @deprecated Deprecated in favor of <code>transferFocus()</code>.
|
|
*/
|
|
public void nextFocus()
|
|
{
|
|
transferFocus();
|
|
}
|
|
|
|
/** @since 1.2 */
|
|
public boolean hasFocus()
|
|
{
|
|
return hasFocus;
|
|
}
|
|
|
|
/**
|
|
* Adds the specified popup menu to this component.
|
|
*
|
|
* @param menu The popup menu to be added.
|
|
*/
|
|
public synchronized void add(PopupMenu popup)
|
|
{
|
|
if (popups == null)
|
|
popups = new Vector();
|
|
popups.addElement(popup);
|
|
}
|
|
|
|
/**
|
|
* Removes the specified popup menu from this component.
|
|
*
|
|
* @param menu The popup menu to remove.
|
|
*/
|
|
public synchronized void remove(MenuComponent popup)
|
|
{
|
|
popups.removeElement(popup);
|
|
}
|
|
|
|
/**
|
|
* Returns a debugging string representing this component.
|
|
*
|
|
* @return A string representing this component.
|
|
*/
|
|
protected String paramString()
|
|
{
|
|
StringBuffer param = new StringBuffer();
|
|
String name = getName();
|
|
if (name != null)
|
|
{
|
|
param.append(name);
|
|
param.append(",");
|
|
}
|
|
param.append(width);
|
|
param.append("x");
|
|
param.append(height);
|
|
param.append("+");
|
|
param.append(x);
|
|
param.append("+");
|
|
param.append(y);
|
|
|
|
if (!isValid())
|
|
param.append(",invalid");
|
|
if (!isVisible())
|
|
param.append(",invisible");
|
|
if (!isEnabled())
|
|
param.append(",disabled");
|
|
if (!isOpaque())
|
|
param.append(",translucent");
|
|
if (isDoubleBuffered())
|
|
param.append(",doublebuffered");
|
|
|
|
return param.toString();
|
|
}
|
|
|
|
/**
|
|
* Returns a string representation of this component.
|
|
*
|
|
* @return A string representation of this component
|
|
*/
|
|
public String toString()
|
|
{
|
|
return this.getClass().getName() + "[" + paramString() + "]";
|
|
}
|
|
|
|
/**
|
|
* Prints a listing of this component to the standard output.
|
|
*/
|
|
public void list ()
|
|
{
|
|
list (System.out, 0);
|
|
}
|
|
|
|
/**
|
|
* Prints a listing of this component to the specified print stream.
|
|
*
|
|
* @param stream The <code>PrintStream</code> to print to.
|
|
*/
|
|
public void list (PrintStream out)
|
|
{
|
|
list (out, 0);
|
|
}
|
|
|
|
/**
|
|
* Prints a listing of this component to the specified print stream,
|
|
* starting at the specified indentation point.
|
|
*
|
|
* @param stream The <code>PrintStream</code> to print to.
|
|
* @param indent The indentation point.
|
|
*/
|
|
public void list (PrintStream out, int indent)
|
|
{
|
|
for (int i = 0; i < indent; ++i)
|
|
out.print (' ');
|
|
out.println (toString ());
|
|
}
|
|
|
|
/**
|
|
* Prints a listing of this component to the specified print writer.
|
|
*
|
|
* @param writer The <code>PrintWrinter</code> to print to.
|
|
*/
|
|
public void list (PrintWriter out)
|
|
{
|
|
list (out, 0);
|
|
}
|
|
|
|
/**
|
|
* Prints a listing of this component to the specified print writer,
|
|
* starting at the specified indentation point.
|
|
*
|
|
* @param writer The <code>PrintWriter</code> to print to.
|
|
* @param indent The indentation point.
|
|
*/
|
|
public void list (PrintWriter out, int indent)
|
|
{
|
|
for (int i = 0; i < indent; ++i)
|
|
out.print (' ');
|
|
out.println (toString ());
|
|
}
|
|
|
|
public void addPropertyChangeListener(PropertyChangeListener listener)
|
|
{
|
|
if (changeSupport == null)
|
|
changeSupport = new PropertyChangeSupport(this);
|
|
changeSupport.addPropertyChangeListener(listener);
|
|
}
|
|
|
|
public void removePropertyChangeListener(PropertyChangeListener listener)
|
|
{
|
|
if (changeSupport != null)
|
|
changeSupport.removePropertyChangeListener(listener);
|
|
}
|
|
|
|
public void addPropertyChangeListener(String propertyName,
|
|
PropertyChangeListener listener)
|
|
{
|
|
if (changeSupport == null)
|
|
changeSupport = new PropertyChangeSupport(this);
|
|
changeSupport.addPropertyChangeListener(propertyName, listener);
|
|
}
|
|
|
|
public void removePropertyChangeListener(String propertyName,
|
|
PropertyChangeListener listener)
|
|
{
|
|
if (changeSupport != null)
|
|
changeSupport.removePropertyChangeListener(propertyName, listener);
|
|
}
|
|
|
|
protected void firePropertyChange(String propertyName, Object oldValue,
|
|
Object newValue)
|
|
{
|
|
if (changeSupport != null)
|
|
changeSupport.firePropertyChange(propertyName, oldValue, newValue);
|
|
}
|
|
|
|
public void setComponentOrientation(ComponentOrientation o)
|
|
{
|
|
orientation = o;
|
|
}
|
|
|
|
public ComponentOrientation getComponentOrientation()
|
|
{
|
|
return orientation;
|
|
}
|
|
|
|
/*
|
|
public AccessibleContext getAccessibleContext()
|
|
{
|
|
return accessibleContext;
|
|
}
|
|
*/
|
|
|
|
/**
|
|
* AWT 1.0 focus event processor.
|
|
*
|
|
* @deprecated Deprecated in favor of <code>processFocusEvent</code>.
|
|
|
|
public boolean
|
|
gotFocus(Event event, Object what)
|
|
{
|
|
return(true);
|
|
}
|
|
*/
|
|
|
|
/**
|
|
* AWT 1.0 focus event processor.
|
|
*
|
|
* @deprecated Deprecated in favor of <code>processFocusEvent</code>.
|
|
|
|
public boolean
|
|
lostFocus(Event event, Object what)
|
|
{
|
|
return(true);
|
|
}
|
|
*/
|
|
|
|
}
|