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jlechner |
/* Container.java -- parent container class in AWT
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Copyright (C) 1999, 2000, 2002, 2003, 2004, 2005 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., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.awt;
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import java.awt.event.ComponentListener;
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import java.awt.event.ContainerEvent;
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import java.awt.event.ContainerListener;
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import java.awt.event.KeyEvent;
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import java.awt.event.MouseEvent;
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import java.awt.peer.ComponentPeer;
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import java.awt.peer.ContainerPeer;
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import java.awt.peer.LightweightPeer;
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import java.beans.PropertyChangeListener;
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import java.beans.PropertyChangeSupport;
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import java.io.IOException;
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import java.io.ObjectInputStream;
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import java.io.ObjectOutputStream;
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import java.io.PrintStream;
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import java.io.PrintWriter;
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import java.io.Serializable;
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import java.util.Collections;
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import java.util.EventListener;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.Set;
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import javax.accessibility.Accessible;
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import gnu.java.awt.AWTUtilities;
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/**
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* A generic window toolkit object that acts as a container for other objects.
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* Components are tracked in a list, and new elements are at the end of the
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* list or bottom of the stacking order.
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*
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* @author original author unknown
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* @author Eric Blake (ebb9@email.byu.edu)
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*
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* @since 1.0
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*
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* @status still missing 1.4 support
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*/
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public class Container extends Component
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{
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/**
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* Compatible with JDK 1.0+.
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*/
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private static final long serialVersionUID = 4613797578919906343L;
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/* Serialized fields from the serialization spec. */
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int ncomponents;
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Component[] component;
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LayoutManager layoutMgr;
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LightweightDispatcher dispatcher;
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Dimension maxSize;
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/**
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* @since 1.4
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*/
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boolean focusCycleRoot;
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int containerSerializedDataVersion;
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/* Anything else is non-serializable, and should be declared "transient". */
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transient ContainerListener containerListener;
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transient PropertyChangeSupport changeSupport;
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/** The focus traversal policy that determines how focus is
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transferred between this Container and its children. */
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private FocusTraversalPolicy focusTraversalPolicy;
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/**
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* The focus traversal keys, if not inherited from the parent or default
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* keyboard manager. These sets will contain only AWTKeyStrokes that
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* represent press and release events to use as focus control.
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*
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* @see #getFocusTraversalKeys(int)
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* @see #setFocusTraversalKeys(int, Set)
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* @since 1.4
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*/
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transient Set[] focusTraversalKeys;
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/**
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* Default constructor for subclasses.
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*/
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public Container()
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{
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// Nothing to do here.
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}
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/**
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* Returns the number of components in this container.
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*
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* @return The number of components in this container.
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*/
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public int getComponentCount()
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{
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return countComponents ();
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}
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/**
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* Returns the number of components in this container.
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*
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* @return The number of components in this container.
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*
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* @deprecated use {@link #getComponentCount()} instead
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*/
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public int countComponents()
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{
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return ncomponents;
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}
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/**
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* Returns the component at the specified index.
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*
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* @param n The index of the component to retrieve.
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*
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* @return The requested component.
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*
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* @throws ArrayIndexOutOfBoundsException If the specified index is invalid
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*/
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public Component getComponent(int n)
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{
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synchronized (getTreeLock ())
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{
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if (n < 0 || n >= ncomponents)
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throw new ArrayIndexOutOfBoundsException("no such component");
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return component[n];
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}
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}
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/**
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* Returns an array of the components in this container.
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*
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* @return The components in this container.
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*/
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public Component[] getComponents()
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{
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synchronized (getTreeLock ())
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{
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Component[] result = new Component[ncomponents];
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if (ncomponents > 0)
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System.arraycopy(component, 0, result, 0, ncomponents);
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return result;
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}
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}
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/**
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* Swaps the components at position i and j, in the container.
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*/
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protected void swapComponents (int i, int j)
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{
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synchronized (getTreeLock ())
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{
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if (i < 0
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|| i >= component.length
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|| j < 0
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|| j >= component.length)
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throw new ArrayIndexOutOfBoundsException ();
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Component tmp = component[i];
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component[i] = component[j];
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component[j] = tmp;
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}
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}
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/**
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* Returns the insets for this container, which is the space used for
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* borders, the margin, etc.
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*
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* @return The insets for this container.
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*/
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public Insets getInsets()
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{
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return insets ();
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}
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/**
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* Returns the insets for this container, which is the space used for
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* borders, the margin, etc.
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*
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* @return The insets for this container.
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* @deprecated use {@link #getInsets()} instead
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*/
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public Insets insets()
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{
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if (peer == null)
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return new Insets (0, 0, 0, 0);
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return ((ContainerPeer) peer).getInsets ();
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}
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/**
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* Adds the specified component to this container at the end of the
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* component list.
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*
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* @param comp The component to add to the container.
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*
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* @return The same component that was added.
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*/
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public Component add(Component comp)
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{
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addImpl(comp, null, -1);
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return comp;
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}
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/**
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* Adds the specified component to the container at the end of the
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* component list. This method should not be used. Instead, use
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* <code>add(Component, Object)</code>.
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*
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* @param name The name of the component to be added.
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* @param comp The component to be added.
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*
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* @return The same component that was added.
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*
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* @see #add(Component,Object)
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*/
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public Component add(String name, Component comp)
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{
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addImpl(comp, name, -1);
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return comp;
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}
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/**
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* Adds the specified component to this container at the specified index
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* in the component list.
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*
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* @param comp The component to be added.
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* @param index The index in the component list to insert this child
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* at, or -1 to add at the end of the list.
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*
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* @return The same component that was added.
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*
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* @throws ArrayIndexOutOfBoundsException If the specified index is invalid.
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*/
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public Component add(Component comp, int index)
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{
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addImpl(comp, null, index);
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return comp;
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}
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/**
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* Adds the specified component to this container at the end of the
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* component list. The layout manager will use the specified constraints
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* when laying out this component.
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*
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* @param comp The component to be added to this container.
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* @param constraints The layout constraints for this component.
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*/
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public void add(Component comp, Object constraints)
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{
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addImpl(comp, constraints, -1);
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}
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/**
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* Adds the specified component to this container at the specified index
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* in the component list. The layout manager will use the specified
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* constraints when layout out this component.
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*
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* @param comp The component to be added.
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* @param constraints The layout constraints for this component.
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* @param index The index in the component list to insert this child
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* at, or -1 to add at the end of the list.
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*
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* @throws ArrayIndexOutOfBoundsException If the specified index is invalid.
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*/
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public void add(Component comp, Object constraints, int index)
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{
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addImpl(comp, constraints, index);
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}
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/**
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* This method is called by all the <code>add()</code> methods to perform
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* the actual adding of the component. Subclasses who wish to perform
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* their own processing when a component is added should override this
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* method. Any subclass doing this must call the superclass version of
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* this method in order to ensure proper functioning of the container.
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*
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* @param comp The component to be added.
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* @param constraints The layout constraints for this component, or
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* <code>null</code> if there are no constraints.
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* @param index The index in the component list to insert this child
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* at, or -1 to add at the end of the list.
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*
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* @throws ArrayIndexOutOfBoundsException If the specified index is invalid.
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*/
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protected void addImpl(Component comp, Object constraints, int index)
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{
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synchronized (getTreeLock ())
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{
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if (index > ncomponents
|
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|| (index < 0 && index != -1)
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|| comp instanceof Window
|
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|| (comp instanceof Container
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&& ((Container) comp).isAncestorOf(this)))
|
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throw new IllegalArgumentException();
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339 |
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|
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// Reparent component, and make sure component is instantiated if
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// we are.
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if (comp.parent != null)
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comp.parent.remove(comp);
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comp.parent = this;
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if (peer != null)
|
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{
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// Notify the component that it has a new parent.
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comp.addNotify();
|
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if (comp.isLightweight ())
|
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{
|
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enableEvents (comp.eventMask);
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if (!isLightweight ())
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enableEvents (AWTEvent.PAINT_EVENT_MASK);
|
356 |
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}
|
357 |
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}
|
358 |
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// Invalidate the layout of the added component and its ancestors.
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comp.invalidate();
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361 |
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|
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if (component == null)
|
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component = new Component[4]; // FIXME, better initial size?
|
364 |
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|
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// This isn't the most efficient implementation. We could do less
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// copying when growing the array. It probably doesn't matter.
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|
|
if (ncomponents >= component.length)
|
368 |
|
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{
|
369 |
|
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int nl = component.length * 2;
|
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|
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Component[] c = new Component[nl];
|
371 |
|
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System.arraycopy(component, 0, c, 0, ncomponents);
|
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component = c;
|
373 |
|
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}
|
374 |
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|
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|
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if (index == -1)
|
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|
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component[ncomponents++] = comp;
|
377 |
|
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else
|
378 |
|
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{
|
379 |
|
|
System.arraycopy(component, index, component, index + 1,
|
380 |
|
|
ncomponents - index);
|
381 |
|
|
component[index] = comp;
|
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|
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++ncomponents;
|
383 |
|
|
}
|
384 |
|
|
|
385 |
|
|
// Notify the layout manager.
|
386 |
|
|
if (layoutMgr != null)
|
387 |
|
|
{
|
388 |
|
|
if (layoutMgr instanceof LayoutManager2)
|
389 |
|
|
{
|
390 |
|
|
LayoutManager2 lm2 = (LayoutManager2) layoutMgr;
|
391 |
|
|
lm2.addLayoutComponent(comp, constraints);
|
392 |
|
|
}
|
393 |
|
|
else if (constraints instanceof String)
|
394 |
|
|
layoutMgr.addLayoutComponent((String) constraints, comp);
|
395 |
|
|
else
|
396 |
|
|
layoutMgr.addLayoutComponent(null, comp);
|
397 |
|
|
}
|
398 |
|
|
|
399 |
|
|
// We previously only sent an event when this container is showing.
|
400 |
|
|
// Also, the event was posted to the event queue. A Mauve test shows
|
401 |
|
|
// that this event is not delivered using the event queue and it is
|
402 |
|
|
// also sent when the container is not showing.
|
403 |
|
|
ContainerEvent ce = new ContainerEvent(this,
|
404 |
|
|
ContainerEvent.COMPONENT_ADDED,
|
405 |
|
|
comp);
|
406 |
|
|
ContainerListener[] listeners = getContainerListeners();
|
407 |
|
|
for (int i = 0; i < listeners.length; i++)
|
408 |
|
|
listeners[i].componentAdded(ce);
|
409 |
|
|
|
410 |
|
|
// Repaint this container.
|
411 |
|
|
repaint(comp.getX(), comp.getY(), comp.getWidth(),
|
412 |
|
|
comp.getHeight());
|
413 |
|
|
}
|
414 |
|
|
}
|
415 |
|
|
|
416 |
|
|
/**
|
417 |
|
|
* Removes the component at the specified index from this container.
|
418 |
|
|
*
|
419 |
|
|
* @param index The index of the component to remove.
|
420 |
|
|
*/
|
421 |
|
|
public void remove(int index)
|
422 |
|
|
{
|
423 |
|
|
synchronized (getTreeLock ())
|
424 |
|
|
{
|
425 |
|
|
Component r = component[index];
|
426 |
|
|
|
427 |
|
|
ComponentListener[] list = r.getComponentListeners();
|
428 |
|
|
for (int j = 0; j < list.length; j++)
|
429 |
|
|
r.removeComponentListener(list[j]);
|
430 |
|
|
|
431 |
|
|
if (r.isShowing())
|
432 |
|
|
r.removeNotify();
|
433 |
|
|
|
434 |
|
|
System.arraycopy(component, index + 1, component, index,
|
435 |
|
|
ncomponents - index - 1);
|
436 |
|
|
component[--ncomponents] = null;
|
437 |
|
|
|
438 |
|
|
invalidate();
|
439 |
|
|
|
440 |
|
|
if (layoutMgr != null)
|
441 |
|
|
layoutMgr.removeLayoutComponent(r);
|
442 |
|
|
|
443 |
|
|
r.parent = null;
|
444 |
|
|
|
445 |
|
|
if (isShowing ())
|
446 |
|
|
{
|
447 |
|
|
// Post event to notify of removing the component.
|
448 |
|
|
ContainerEvent ce = new ContainerEvent(this,
|
449 |
|
|
ContainerEvent.COMPONENT_REMOVED,
|
450 |
|
|
r);
|
451 |
|
|
getToolkit().getSystemEventQueue().postEvent(ce);
|
452 |
|
|
|
453 |
|
|
// Repaint this container.
|
454 |
|
|
repaint();
|
455 |
|
|
}
|
456 |
|
|
}
|
457 |
|
|
}
|
458 |
|
|
|
459 |
|
|
/**
|
460 |
|
|
* Removes the specified component from this container.
|
461 |
|
|
*
|
462 |
|
|
* @param comp The component to remove from this container.
|
463 |
|
|
*/
|
464 |
|
|
public void remove(Component comp)
|
465 |
|
|
{
|
466 |
|
|
synchronized (getTreeLock ())
|
467 |
|
|
{
|
468 |
|
|
for (int i = 0; i < ncomponents; ++i)
|
469 |
|
|
{
|
470 |
|
|
if (component[i] == comp)
|
471 |
|
|
{
|
472 |
|
|
remove(i);
|
473 |
|
|
break;
|
474 |
|
|
}
|
475 |
|
|
}
|
476 |
|
|
}
|
477 |
|
|
}
|
478 |
|
|
|
479 |
|
|
/**
|
480 |
|
|
* Removes all components from this container.
|
481 |
|
|
*/
|
482 |
|
|
public void removeAll()
|
483 |
|
|
{
|
484 |
|
|
synchronized (getTreeLock ())
|
485 |
|
|
{
|
486 |
|
|
while (ncomponents > 0)
|
487 |
|
|
remove(0);
|
488 |
|
|
}
|
489 |
|
|
}
|
490 |
|
|
|
491 |
|
|
/**
|
492 |
|
|
* Returns the current layout manager for this container.
|
493 |
|
|
*
|
494 |
|
|
* @return The layout manager for this container.
|
495 |
|
|
*/
|
496 |
|
|
public LayoutManager getLayout()
|
497 |
|
|
{
|
498 |
|
|
return layoutMgr;
|
499 |
|
|
}
|
500 |
|
|
|
501 |
|
|
/**
|
502 |
|
|
* Sets the layout manager for this container to the specified layout
|
503 |
|
|
* manager.
|
504 |
|
|
*
|
505 |
|
|
* @param mgr The new layout manager for this container.
|
506 |
|
|
*/
|
507 |
|
|
public void setLayout(LayoutManager mgr)
|
508 |
|
|
{
|
509 |
|
|
layoutMgr = mgr;
|
510 |
|
|
invalidate();
|
511 |
|
|
}
|
512 |
|
|
|
513 |
|
|
/**
|
514 |
|
|
* Layout the components in this container.
|
515 |
|
|
*/
|
516 |
|
|
public void doLayout()
|
517 |
|
|
{
|
518 |
|
|
layout ();
|
519 |
|
|
}
|
520 |
|
|
|
521 |
|
|
/**
|
522 |
|
|
* Layout the components in this container.
|
523 |
|
|
*
|
524 |
|
|
* @deprecated use {@link #doLayout()} instead
|
525 |
|
|
*/
|
526 |
|
|
public void layout()
|
527 |
|
|
{
|
528 |
|
|
if (layoutMgr != null)
|
529 |
|
|
layoutMgr.layoutContainer (this);
|
530 |
|
|
}
|
531 |
|
|
|
532 |
|
|
/**
|
533 |
|
|
* Invalidates this container to indicate that it (and all parent
|
534 |
|
|
* containers) need to be laid out.
|
535 |
|
|
*/
|
536 |
|
|
public void invalidate()
|
537 |
|
|
{
|
538 |
|
|
super.invalidate();
|
539 |
|
|
if (layoutMgr != null && layoutMgr instanceof LayoutManager2)
|
540 |
|
|
{
|
541 |
|
|
LayoutManager2 lm2 = (LayoutManager2) layoutMgr;
|
542 |
|
|
lm2.invalidateLayout(this);
|
543 |
|
|
}
|
544 |
|
|
}
|
545 |
|
|
|
546 |
|
|
/**
|
547 |
|
|
* Re-lays out the components in this container.
|
548 |
|
|
*/
|
549 |
|
|
public void validate()
|
550 |
|
|
{
|
551 |
|
|
synchronized (getTreeLock ())
|
552 |
|
|
{
|
553 |
|
|
if (! isValid() && peer != null)
|
554 |
|
|
{
|
555 |
|
|
validateTree();
|
556 |
|
|
}
|
557 |
|
|
}
|
558 |
|
|
}
|
559 |
|
|
|
560 |
|
|
/**
|
561 |
|
|
* Recursively invalidates the container tree.
|
562 |
|
|
*/
|
563 |
|
|
void invalidateTree()
|
564 |
|
|
{
|
565 |
|
|
super.invalidate(); // Clean cached layout state.
|
566 |
|
|
for (int i = 0; i < ncomponents; i++)
|
567 |
|
|
{
|
568 |
|
|
Component comp = component[i];
|
569 |
|
|
comp.invalidate();
|
570 |
|
|
if (comp instanceof Container)
|
571 |
|
|
((Container) comp).invalidateTree();
|
572 |
|
|
}
|
573 |
|
|
|
574 |
|
|
if (layoutMgr != null && layoutMgr instanceof LayoutManager2)
|
575 |
|
|
{
|
576 |
|
|
LayoutManager2 lm2 = (LayoutManager2) layoutMgr;
|
577 |
|
|
lm2.invalidateLayout(this);
|
578 |
|
|
}
|
579 |
|
|
}
|
580 |
|
|
|
581 |
|
|
/**
|
582 |
|
|
* Recursively validates the container tree, recomputing any invalid
|
583 |
|
|
* layouts.
|
584 |
|
|
*/
|
585 |
|
|
protected void validateTree()
|
586 |
|
|
{
|
587 |
|
|
if (valid)
|
588 |
|
|
return;
|
589 |
|
|
|
590 |
|
|
ContainerPeer cPeer = null;
|
591 |
|
|
if (peer != null && ! (peer instanceof LightweightPeer))
|
592 |
|
|
{
|
593 |
|
|
cPeer = (ContainerPeer) peer;
|
594 |
|
|
cPeer.beginValidate();
|
595 |
|
|
}
|
596 |
|
|
|
597 |
|
|
for (int i = 0; i < ncomponents; ++i)
|
598 |
|
|
{
|
599 |
|
|
Component comp = component[i];
|
600 |
|
|
|
601 |
|
|
if (comp.getPeer () == null)
|
602 |
|
|
comp.addNotify();
|
603 |
|
|
}
|
604 |
|
|
|
605 |
|
|
doLayout ();
|
606 |
|
|
for (int i = 0; i < ncomponents; ++i)
|
607 |
|
|
{
|
608 |
|
|
Component comp = component[i];
|
609 |
|
|
|
610 |
|
|
if (! comp.isValid())
|
611 |
|
|
{
|
612 |
|
|
if (comp instanceof Container)
|
613 |
|
|
{
|
614 |
|
|
((Container) comp).validateTree();
|
615 |
|
|
}
|
616 |
|
|
else
|
617 |
|
|
{
|
618 |
|
|
component[i].validate();
|
619 |
|
|
}
|
620 |
|
|
}
|
621 |
|
|
}
|
622 |
|
|
|
623 |
|
|
/* children will call invalidate() when they are layed out. It
|
624 |
|
|
is therefore important that valid is not set to true
|
625 |
|
|
until after the children have been layed out. */
|
626 |
|
|
valid = true;
|
627 |
|
|
|
628 |
|
|
if (cPeer != null)
|
629 |
|
|
cPeer.endValidate();
|
630 |
|
|
}
|
631 |
|
|
|
632 |
|
|
public void setFont(Font f)
|
633 |
|
|
{
|
634 |
|
|
if( (f != null && (font == null || !font.equals(f)))
|
635 |
|
|
|| f == null)
|
636 |
|
|
{
|
637 |
|
|
super.setFont(f);
|
638 |
|
|
// FIXME: Although it might make more sense to invalidate only
|
639 |
|
|
// those children whose font == null, Sun invalidates all children.
|
640 |
|
|
// So we'll do the same.
|
641 |
|
|
invalidateTree();
|
642 |
|
|
}
|
643 |
|
|
}
|
644 |
|
|
|
645 |
|
|
/**
|
646 |
|
|
* Returns the preferred size of this container.
|
647 |
|
|
*
|
648 |
|
|
* @return The preferred size of this container.
|
649 |
|
|
*/
|
650 |
|
|
public Dimension getPreferredSize()
|
651 |
|
|
{
|
652 |
|
|
return preferredSize ();
|
653 |
|
|
}
|
654 |
|
|
|
655 |
|
|
/**
|
656 |
|
|
* Returns the preferred size of this container.
|
657 |
|
|
*
|
658 |
|
|
* @return The preferred size of this container.
|
659 |
|
|
*
|
660 |
|
|
* @deprecated use {@link #getPreferredSize()} instead
|
661 |
|
|
*/
|
662 |
|
|
public Dimension preferredSize()
|
663 |
|
|
{
|
664 |
|
|
synchronized(treeLock)
|
665 |
|
|
{
|
666 |
|
|
if(valid && prefSize != null)
|
667 |
|
|
return new Dimension(prefSize);
|
668 |
|
|
LayoutManager layout = getLayout();
|
669 |
|
|
if (layout != null)
|
670 |
|
|
{
|
671 |
|
|
Dimension layoutSize = layout.preferredLayoutSize(this);
|
672 |
|
|
if(valid)
|
673 |
|
|
prefSize = layoutSize;
|
674 |
|
|
return new Dimension(layoutSize);
|
675 |
|
|
}
|
676 |
|
|
else
|
677 |
|
|
return super.preferredSize ();
|
678 |
|
|
}
|
679 |
|
|
}
|
680 |
|
|
|
681 |
|
|
/**
|
682 |
|
|
* Returns the minimum size of this container.
|
683 |
|
|
*
|
684 |
|
|
* @return The minimum size of this container.
|
685 |
|
|
*/
|
686 |
|
|
public Dimension getMinimumSize()
|
687 |
|
|
{
|
688 |
|
|
return minimumSize ();
|
689 |
|
|
}
|
690 |
|
|
|
691 |
|
|
/**
|
692 |
|
|
* Returns the minimum size of this container.
|
693 |
|
|
*
|
694 |
|
|
* @return The minimum size of this container.
|
695 |
|
|
*
|
696 |
|
|
* @deprecated use {@link #getMinimumSize()} instead
|
697 |
|
|
*/
|
698 |
|
|
public Dimension minimumSize()
|
699 |
|
|
{
|
700 |
|
|
if(valid && minSize != null)
|
701 |
|
|
return new Dimension(minSize);
|
702 |
|
|
|
703 |
|
|
LayoutManager layout = getLayout();
|
704 |
|
|
if (layout != null)
|
705 |
|
|
{
|
706 |
|
|
minSize = layout.minimumLayoutSize (this);
|
707 |
|
|
return minSize;
|
708 |
|
|
}
|
709 |
|
|
else
|
710 |
|
|
return super.minimumSize ();
|
711 |
|
|
}
|
712 |
|
|
|
713 |
|
|
/**
|
714 |
|
|
* Returns the maximum size of this container.
|
715 |
|
|
*
|
716 |
|
|
* @return The maximum size of this container.
|
717 |
|
|
*/
|
718 |
|
|
public Dimension getMaximumSize()
|
719 |
|
|
{
|
720 |
|
|
if (valid && maxSize != null)
|
721 |
|
|
return new Dimension(maxSize);
|
722 |
|
|
|
723 |
|
|
LayoutManager layout = getLayout();
|
724 |
|
|
if (layout != null && layout instanceof LayoutManager2)
|
725 |
|
|
{
|
726 |
|
|
LayoutManager2 lm2 = (LayoutManager2) layout;
|
727 |
|
|
maxSize = lm2.maximumLayoutSize(this);
|
728 |
|
|
return maxSize;
|
729 |
|
|
}
|
730 |
|
|
else
|
731 |
|
|
return super.getMaximumSize();
|
732 |
|
|
}
|
733 |
|
|
|
734 |
|
|
/**
|
735 |
|
|
* Returns the preferred alignment along the X axis. This is a value
|
736 |
|
|
* between 0 and 1 where 0 represents alignment flush left and
|
737 |
|
|
* 1 means alignment flush right, and 0.5 means centered.
|
738 |
|
|
*
|
739 |
|
|
* @return The preferred alignment along the X axis.
|
740 |
|
|
*/
|
741 |
|
|
public float getAlignmentX()
|
742 |
|
|
{
|
743 |
|
|
LayoutManager layout = getLayout();
|
744 |
|
|
float alignmentX = 0.0F;
|
745 |
|
|
if (layout != null && layout instanceof LayoutManager2)
|
746 |
|
|
{
|
747 |
|
|
LayoutManager2 lm2 = (LayoutManager2) layout;
|
748 |
|
|
alignmentX = lm2.getLayoutAlignmentX(this);
|
749 |
|
|
}
|
750 |
|
|
else
|
751 |
|
|
alignmentX = super.getAlignmentX();
|
752 |
|
|
return alignmentX;
|
753 |
|
|
}
|
754 |
|
|
|
755 |
|
|
/**
|
756 |
|
|
* Returns the preferred alignment along the Y axis. This is a value
|
757 |
|
|
* between 0 and 1 where 0 represents alignment flush top and
|
758 |
|
|
* 1 means alignment flush bottom, and 0.5 means centered.
|
759 |
|
|
*
|
760 |
|
|
* @return The preferred alignment along the Y axis.
|
761 |
|
|
*/
|
762 |
|
|
public float getAlignmentY()
|
763 |
|
|
{
|
764 |
|
|
LayoutManager layout = getLayout();
|
765 |
|
|
float alignmentY = 0.0F;
|
766 |
|
|
if (layout != null && layout instanceof LayoutManager2)
|
767 |
|
|
{
|
768 |
|
|
LayoutManager2 lm2 = (LayoutManager2) layout;
|
769 |
|
|
alignmentY = lm2.getLayoutAlignmentY(this);
|
770 |
|
|
}
|
771 |
|
|
else
|
772 |
|
|
alignmentY = super.getAlignmentY();
|
773 |
|
|
return alignmentY;
|
774 |
|
|
}
|
775 |
|
|
|
776 |
|
|
/**
|
777 |
|
|
* Paints this container. The implementation of this method in this
|
778 |
|
|
* class forwards to any lightweight components in this container. If
|
779 |
|
|
* this method is subclassed, this method should still be invoked as
|
780 |
|
|
* a superclass method so that lightweight components are properly
|
781 |
|
|
* drawn.
|
782 |
|
|
*
|
783 |
|
|
* @param g The graphics context for this paint job.
|
784 |
|
|
*/
|
785 |
|
|
public void paint(Graphics g)
|
786 |
|
|
{
|
787 |
|
|
if (!isShowing())
|
788 |
|
|
return;
|
789 |
|
|
|
790 |
|
|
// Visit heavyweights as well, in case they were
|
791 |
|
|
// erased when we cleared the background for this container.
|
792 |
|
|
visitChildren(g, GfxPaintVisitor.INSTANCE, false);
|
793 |
|
|
}
|
794 |
|
|
|
795 |
|
|
/**
|
796 |
|
|
* Updates this container. The implementation of this method in this
|
797 |
|
|
* class forwards to any lightweight components in this container. If
|
798 |
|
|
* this method is subclassed, this method should still be invoked as
|
799 |
|
|
* a superclass method so that lightweight components are properly
|
800 |
|
|
* drawn.
|
801 |
|
|
*
|
802 |
|
|
* @param g The graphics context for this update.
|
803 |
|
|
*
|
804 |
|
|
* @specnote The specification suggests that this method forwards the
|
805 |
|
|
* update() call to all its lightweight children. Tests show
|
806 |
|
|
* that this is not done either in the JDK. The exact behaviour
|
807 |
|
|
* seems to be that the background is cleared in heavyweight
|
808 |
|
|
* Containers, and all other containers
|
809 |
|
|
* directly call paint(), causing the (lightweight) children to
|
810 |
|
|
* be painted.
|
811 |
|
|
*/
|
812 |
|
|
public void update(Graphics g)
|
813 |
|
|
{
|
814 |
|
|
// It seems that the JDK clears the background of containers like Panel
|
815 |
|
|
// and Window (within this method) but not of 'plain' Containers or
|
816 |
|
|
// JComponents. This could
|
817 |
|
|
// lead to the assumption that it only clears heavyweight containers.
|
818 |
|
|
// However that is not quite true. In a test with a custom Container
|
819 |
|
|
// that overrides isLightweight() to return false, the background is
|
820 |
|
|
// also not cleared. So we do a check on !(peer instanceof LightweightPeer)
|
821 |
|
|
// instead.
|
822 |
|
|
ComponentPeer p = peer;
|
823 |
|
|
if (p != null && !(p instanceof LightweightPeer))
|
824 |
|
|
g.clearRect(0, 0, getWidth(), getHeight());
|
825 |
|
|
|
826 |
|
|
paint(g);
|
827 |
|
|
}
|
828 |
|
|
|
829 |
|
|
/**
|
830 |
|
|
* Prints this container. The implementation of this method in this
|
831 |
|
|
* class forwards to any lightweight components in this container. If
|
832 |
|
|
* this method is subclassed, this method should still be invoked as
|
833 |
|
|
* a superclass method so that lightweight components are properly
|
834 |
|
|
* drawn.
|
835 |
|
|
*
|
836 |
|
|
* @param g The graphics context for this print job.
|
837 |
|
|
*/
|
838 |
|
|
public void print(Graphics g)
|
839 |
|
|
{
|
840 |
|
|
super.print(g);
|
841 |
|
|
visitChildren(g, GfxPrintVisitor.INSTANCE, true);
|
842 |
|
|
}
|
843 |
|
|
|
844 |
|
|
/**
|
845 |
|
|
* Paints all of the components in this container.
|
846 |
|
|
*
|
847 |
|
|
* @param g The graphics context for this paint job.
|
848 |
|
|
*/
|
849 |
|
|
public void paintComponents(Graphics g)
|
850 |
|
|
{
|
851 |
|
|
paint(g);
|
852 |
|
|
visitChildren(g, GfxPaintAllVisitor.INSTANCE, true);
|
853 |
|
|
}
|
854 |
|
|
|
855 |
|
|
/**
|
856 |
|
|
* Prints all of the components in this container.
|
857 |
|
|
*
|
858 |
|
|
* @param g The graphics context for this print job.
|
859 |
|
|
*/
|
860 |
|
|
public void printComponents(Graphics g)
|
861 |
|
|
{
|
862 |
|
|
super.paint(g);
|
863 |
|
|
visitChildren(g, GfxPrintAllVisitor.INSTANCE, true);
|
864 |
|
|
}
|
865 |
|
|
|
866 |
|
|
/**
|
867 |
|
|
* Adds the specified container listener to this object's list of
|
868 |
|
|
* container listeners.
|
869 |
|
|
*
|
870 |
|
|
* @param listener The listener to add.
|
871 |
|
|
*/
|
872 |
|
|
public synchronized void addContainerListener(ContainerListener listener)
|
873 |
|
|
{
|
874 |
|
|
containerListener = AWTEventMulticaster.add(containerListener, listener);
|
875 |
|
|
}
|
876 |
|
|
|
877 |
|
|
/**
|
878 |
|
|
* Removes the specified container listener from this object's list of
|
879 |
|
|
* container listeners.
|
880 |
|
|
*
|
881 |
|
|
* @param listener The listener to remove.
|
882 |
|
|
*/
|
883 |
|
|
public synchronized void removeContainerListener(ContainerListener listener)
|
884 |
|
|
{
|
885 |
|
|
containerListener = AWTEventMulticaster.remove(containerListener, listener);
|
886 |
|
|
}
|
887 |
|
|
|
888 |
|
|
/**
|
889 |
|
|
* @since 1.4
|
890 |
|
|
*/
|
891 |
|
|
public synchronized ContainerListener[] getContainerListeners()
|
892 |
|
|
{
|
893 |
|
|
return (ContainerListener[])
|
894 |
|
|
AWTEventMulticaster.getListeners(containerListener,
|
895 |
|
|
ContainerListener.class);
|
896 |
|
|
}
|
897 |
|
|
|
898 |
|
|
/**
|
899 |
|
|
* Returns an array of all the objects currently registered as FooListeners
|
900 |
|
|
* upon this Container. FooListeners are registered using the addFooListener
|
901 |
|
|
* method.
|
902 |
|
|
*
|
903 |
|
|
* @exception ClassCastException If listenerType doesn't specify a class or
|
904 |
|
|
* interface that implements @see java.util.EventListener.
|
905 |
|
|
*
|
906 |
|
|
* @since 1.3
|
907 |
|
|
*/
|
908 |
|
|
public EventListener[] getListeners(Class listenerType)
|
909 |
|
|
{
|
910 |
|
|
if (listenerType == ContainerListener.class)
|
911 |
|
|
return getContainerListeners();
|
912 |
|
|
return super.getListeners(listenerType);
|
913 |
|
|
}
|
914 |
|
|
|
915 |
|
|
/**
|
916 |
|
|
* Processes the specified event. This method calls
|
917 |
|
|
* <code>processContainerEvent()</code> if this method is a
|
918 |
|
|
* <code>ContainerEvent</code>, otherwise it calls the superclass
|
919 |
|
|
* method.
|
920 |
|
|
*
|
921 |
|
|
* @param e The event to be processed.
|
922 |
|
|
*/
|
923 |
|
|
protected void processEvent(AWTEvent e)
|
924 |
|
|
{
|
925 |
|
|
if (e instanceof ContainerEvent)
|
926 |
|
|
processContainerEvent((ContainerEvent) e);
|
927 |
|
|
else
|
928 |
|
|
super.processEvent(e);
|
929 |
|
|
}
|
930 |
|
|
|
931 |
|
|
/**
|
932 |
|
|
* Called when a container event occurs if container events are enabled.
|
933 |
|
|
* This method calls any registered listeners.
|
934 |
|
|
*
|
935 |
|
|
* @param e The event that occurred.
|
936 |
|
|
*/
|
937 |
|
|
protected void processContainerEvent(ContainerEvent e)
|
938 |
|
|
{
|
939 |
|
|
if (containerListener == null)
|
940 |
|
|
return;
|
941 |
|
|
switch (e.id)
|
942 |
|
|
{
|
943 |
|
|
case ContainerEvent.COMPONENT_ADDED:
|
944 |
|
|
containerListener.componentAdded(e);
|
945 |
|
|
break;
|
946 |
|
|
|
947 |
|
|
case ContainerEvent.COMPONENT_REMOVED:
|
948 |
|
|
containerListener.componentRemoved(e);
|
949 |
|
|
break;
|
950 |
|
|
}
|
951 |
|
|
}
|
952 |
|
|
|
953 |
|
|
/**
|
954 |
|
|
* AWT 1.0 event processor.
|
955 |
|
|
*
|
956 |
|
|
* @param e The event that occurred.
|
957 |
|
|
*
|
958 |
|
|
* @deprecated use {@link #dispatchEvent(AWTEvent)} instead
|
959 |
|
|
*/
|
960 |
|
|
public void deliverEvent(Event e)
|
961 |
|
|
{
|
962 |
|
|
if (!handleEvent (e))
|
963 |
|
|
{
|
964 |
|
|
synchronized (getTreeLock ())
|
965 |
|
|
{
|
966 |
|
|
Component parent = getParent ();
|
967 |
|
|
|
968 |
|
|
if (parent != null)
|
969 |
|
|
parent.deliverEvent (e);
|
970 |
|
|
}
|
971 |
|
|
}
|
972 |
|
|
}
|
973 |
|
|
|
974 |
|
|
/**
|
975 |
|
|
* Returns the component located at the specified point. This is done
|
976 |
|
|
* by checking whether or not a child component claims to contain this
|
977 |
|
|
* point. The first child component that does is returned. If no
|
978 |
|
|
* child component claims the point, the container itself is returned,
|
979 |
|
|
* unless the point does not exist within this container, in which
|
980 |
|
|
* case <code>null</code> is returned.
|
981 |
|
|
*
|
982 |
|
|
* @param x The X coordinate of the point.
|
983 |
|
|
* @param y The Y coordinate of the point.
|
984 |
|
|
*
|
985 |
|
|
* @return The component containing the specified point, or
|
986 |
|
|
* <code>null</code> if there is no such point.
|
987 |
|
|
*/
|
988 |
|
|
public Component getComponentAt(int x, int y)
|
989 |
|
|
{
|
990 |
|
|
return locate (x, y);
|
991 |
|
|
}
|
992 |
|
|
|
993 |
|
|
/**
|
994 |
|
|
* Returns the component located at the specified point. This is done
|
995 |
|
|
* by checking whether or not a child component claims to contain this
|
996 |
|
|
* point. The first child component that does is returned. If no
|
997 |
|
|
* child component claims the point, the container itself is returned,
|
998 |
|
|
* unless the point does not exist within this container, in which
|
999 |
|
|
* case <code>null</code> is returned.
|
1000 |
|
|
*
|
1001 |
|
|
* @param x The x position of the point to return the component at.
|
1002 |
|
|
* @param y The y position of the point to return the component at.
|
1003 |
|
|
*
|
1004 |
|
|
* @return The component containing the specified point, or <code>null</code>
|
1005 |
|
|
* if there is no such point.
|
1006 |
|
|
*
|
1007 |
|
|
* @deprecated use {@link #getComponentAt(int, int)} instead
|
1008 |
|
|
*/
|
1009 |
|
|
public Component locate(int x, int y)
|
1010 |
|
|
{
|
1011 |
|
|
synchronized (getTreeLock ())
|
1012 |
|
|
{
|
1013 |
|
|
if (!contains (x, y))
|
1014 |
|
|
return null;
|
1015 |
|
|
for (int i = 0; i < ncomponents; ++i)
|
1016 |
|
|
{
|
1017 |
|
|
// Ignore invisible children...
|
1018 |
|
|
if (!component[i].isVisible ())
|
1019 |
|
|
continue;
|
1020 |
|
|
|
1021 |
|
|
int x2 = x - component[i].x;
|
1022 |
|
|
int y2 = y - component[i].y;
|
1023 |
|
|
if (component[i].contains (x2, y2))
|
1024 |
|
|
return component[i];
|
1025 |
|
|
}
|
1026 |
|
|
return this;
|
1027 |
|
|
}
|
1028 |
|
|
}
|
1029 |
|
|
|
1030 |
|
|
/**
|
1031 |
|
|
* Returns the component located at the specified point. This is done
|
1032 |
|
|
* by checking whether or not a child component claims to contain this
|
1033 |
|
|
* point. The first child component that does is returned. If no
|
1034 |
|
|
* child component claims the point, the container itself is returned,
|
1035 |
|
|
* unless the point does not exist within this container, in which
|
1036 |
|
|
* case <code>null</code> is returned.
|
1037 |
|
|
*
|
1038 |
|
|
* @param p The point to return the component at.
|
1039 |
|
|
* @return The component containing the specified point, or <code>null</code>
|
1040 |
|
|
* if there is no such point.
|
1041 |
|
|
*/
|
1042 |
|
|
public Component getComponentAt(Point p)
|
1043 |
|
|
{
|
1044 |
|
|
return getComponentAt (p.x, p.y);
|
1045 |
|
|
}
|
1046 |
|
|
|
1047 |
|
|
public Component findComponentAt(int x, int y)
|
1048 |
|
|
{
|
1049 |
|
|
synchronized (getTreeLock ())
|
1050 |
|
|
{
|
1051 |
|
|
if (! contains(x, y))
|
1052 |
|
|
return null;
|
1053 |
|
|
|
1054 |
|
|
for (int i = 0; i < ncomponents; ++i)
|
1055 |
|
|
{
|
1056 |
|
|
// Ignore invisible children...
|
1057 |
|
|
if (!component[i].isVisible())
|
1058 |
|
|
continue;
|
1059 |
|
|
|
1060 |
|
|
int x2 = x - component[i].x;
|
1061 |
|
|
int y2 = y - component[i].y;
|
1062 |
|
|
// We don't do the contains() check right away because
|
1063 |
|
|
// findComponentAt would redundantly do it first thing.
|
1064 |
|
|
if (component[i] instanceof Container)
|
1065 |
|
|
{
|
1066 |
|
|
Container k = (Container) component[i];
|
1067 |
|
|
Component r = k.findComponentAt(x2, y2);
|
1068 |
|
|
if (r != null)
|
1069 |
|
|
return r;
|
1070 |
|
|
}
|
1071 |
|
|
else if (component[i].contains(x2, y2))
|
1072 |
|
|
return component[i];
|
1073 |
|
|
}
|
1074 |
|
|
|
1075 |
|
|
return this;
|
1076 |
|
|
}
|
1077 |
|
|
}
|
1078 |
|
|
|
1079 |
|
|
/**
|
1080 |
|
|
* Finds the visible child component that contains the specified position.
|
1081 |
|
|
* The top-most child is returned in the case where there is overlap.
|
1082 |
|
|
* If the top-most child is transparent and has no MouseListeners attached,
|
1083 |
|
|
* we discard it and return the next top-most component containing the
|
1084 |
|
|
* specified position.
|
1085 |
|
|
* @param x the x coordinate
|
1086 |
|
|
* @param y the y coordinate
|
1087 |
|
|
* @return null if the <code>this</code> does not contain the position,
|
1088 |
|
|
* otherwise the top-most component (out of this container itself and
|
1089 |
|
|
* its descendants) meeting the criteria above.
|
1090 |
|
|
*/
|
1091 |
|
|
Component findComponentForMouseEventAt(int x, int y)
|
1092 |
|
|
{
|
1093 |
|
|
synchronized (getTreeLock())
|
1094 |
|
|
{
|
1095 |
|
|
if (!contains(x, y))
|
1096 |
|
|
return null;
|
1097 |
|
|
|
1098 |
|
|
for (int i = 0; i < ncomponents; ++i)
|
1099 |
|
|
{
|
1100 |
|
|
// Ignore invisible children...
|
1101 |
|
|
if (!component[i].isVisible())
|
1102 |
|
|
continue;
|
1103 |
|
|
|
1104 |
|
|
int x2 = x - component[i].x;
|
1105 |
|
|
int y2 = y - component[i].y;
|
1106 |
|
|
// We don't do the contains() check right away because
|
1107 |
|
|
// findComponentAt would redundantly do it first thing.
|
1108 |
|
|
if (component[i] instanceof Container)
|
1109 |
|
|
{
|
1110 |
|
|
Container k = (Container) component[i];
|
1111 |
|
|
Component r = k.findComponentForMouseEventAt(x2, y2);
|
1112 |
|
|
if (r != null)
|
1113 |
|
|
return r;
|
1114 |
|
|
}
|
1115 |
|
|
else if (component[i].contains(x2, y2))
|
1116 |
|
|
return component[i];
|
1117 |
|
|
}
|
1118 |
|
|
|
1119 |
|
|
//don't return transparent components with no MouseListeners
|
1120 |
|
|
if (this.getMouseListeners().length == 0)
|
1121 |
|
|
return null;
|
1122 |
|
|
return this;
|
1123 |
|
|
}
|
1124 |
|
|
}
|
1125 |
|
|
|
1126 |
|
|
public Component findComponentAt(Point p)
|
1127 |
|
|
{
|
1128 |
|
|
return findComponentAt(p.x, p.y);
|
1129 |
|
|
}
|
1130 |
|
|
|
1131 |
|
|
/**
|
1132 |
|
|
* Called when this container is added to another container to inform it
|
1133 |
|
|
* to create its peer. Peers for any child components will also be
|
1134 |
|
|
* created.
|
1135 |
|
|
*/
|
1136 |
|
|
public void addNotify()
|
1137 |
|
|
{
|
1138 |
|
|
super.addNotify();
|
1139 |
|
|
addNotifyContainerChildren();
|
1140 |
|
|
}
|
1141 |
|
|
|
1142 |
|
|
/**
|
1143 |
|
|
* Called when this container is removed from its parent container to
|
1144 |
|
|
* inform it to destroy its peer. This causes the peers of all child
|
1145 |
|
|
* component to be destroyed as well.
|
1146 |
|
|
*/
|
1147 |
|
|
public void removeNotify()
|
1148 |
|
|
{
|
1149 |
|
|
synchronized (getTreeLock ())
|
1150 |
|
|
{
|
1151 |
|
|
for (int i = 0; i < ncomponents; ++i)
|
1152 |
|
|
component[i].removeNotify();
|
1153 |
|
|
super.removeNotify();
|
1154 |
|
|
}
|
1155 |
|
|
}
|
1156 |
|
|
|
1157 |
|
|
/**
|
1158 |
|
|
* Tests whether or not the specified component is contained within
|
1159 |
|
|
* this components subtree.
|
1160 |
|
|
*
|
1161 |
|
|
* @param comp The component to test.
|
1162 |
|
|
*
|
1163 |
|
|
* @return <code>true</code> if this container is an ancestor of the
|
1164 |
|
|
* specified component, <code>false</code> otherwise.
|
1165 |
|
|
*/
|
1166 |
|
|
public boolean isAncestorOf(Component comp)
|
1167 |
|
|
{
|
1168 |
|
|
synchronized (getTreeLock ())
|
1169 |
|
|
{
|
1170 |
|
|
while (true)
|
1171 |
|
|
{
|
1172 |
|
|
if (comp == null)
|
1173 |
|
|
return false;
|
1174 |
|
|
if (comp == this)
|
1175 |
|
|
return true;
|
1176 |
|
|
comp = comp.getParent();
|
1177 |
|
|
}
|
1178 |
|
|
}
|
1179 |
|
|
}
|
1180 |
|
|
|
1181 |
|
|
/**
|
1182 |
|
|
* Returns a string representing the state of this container for
|
1183 |
|
|
* debugging purposes.
|
1184 |
|
|
*
|
1185 |
|
|
* @return A string representing the state of this container.
|
1186 |
|
|
*/
|
1187 |
|
|
protected String paramString()
|
1188 |
|
|
{
|
1189 |
|
|
if (layoutMgr == null)
|
1190 |
|
|
return super.paramString();
|
1191 |
|
|
|
1192 |
|
|
StringBuffer sb = new StringBuffer();
|
1193 |
|
|
sb.append(super.paramString());
|
1194 |
|
|
sb.append(",layout=");
|
1195 |
|
|
sb.append(layoutMgr.getClass().getName());
|
1196 |
|
|
return sb.toString();
|
1197 |
|
|
}
|
1198 |
|
|
|
1199 |
|
|
/**
|
1200 |
|
|
* Writes a listing of this container to the specified stream starting
|
1201 |
|
|
* at the specified indentation point.
|
1202 |
|
|
*
|
1203 |
|
|
* @param out The <code>PrintStream</code> to write to.
|
1204 |
|
|
* @param indent The indentation point.
|
1205 |
|
|
*/
|
1206 |
|
|
public void list(PrintStream out, int indent)
|
1207 |
|
|
{
|
1208 |
|
|
synchronized (getTreeLock ())
|
1209 |
|
|
{
|
1210 |
|
|
super.list(out, indent);
|
1211 |
|
|
for (int i = 0; i < ncomponents; ++i)
|
1212 |
|
|
component[i].list(out, indent + 2);
|
1213 |
|
|
}
|
1214 |
|
|
}
|
1215 |
|
|
|
1216 |
|
|
/**
|
1217 |
|
|
* Writes a listing of this container to the specified stream starting
|
1218 |
|
|
* at the specified indentation point.
|
1219 |
|
|
*
|
1220 |
|
|
* @param out The <code>PrintWriter</code> to write to.
|
1221 |
|
|
* @param indent The indentation point.
|
1222 |
|
|
*/
|
1223 |
|
|
public void list(PrintWriter out, int indent)
|
1224 |
|
|
{
|
1225 |
|
|
synchronized (getTreeLock ())
|
1226 |
|
|
{
|
1227 |
|
|
super.list(out, indent);
|
1228 |
|
|
for (int i = 0; i < ncomponents; ++i)
|
1229 |
|
|
component[i].list(out, indent + 2);
|
1230 |
|
|
}
|
1231 |
|
|
}
|
1232 |
|
|
|
1233 |
|
|
/**
|
1234 |
|
|
* Sets the focus traversal keys for a given traversal operation for this
|
1235 |
|
|
* Container.
|
1236 |
|
|
*
|
1237 |
|
|
* @exception IllegalArgumentException If id is not one of
|
1238 |
|
|
* KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
|
1239 |
|
|
* KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,
|
1240 |
|
|
* KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS,
|
1241 |
|
|
* or KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS,
|
1242 |
|
|
* or if keystrokes contains null, or if any Object in keystrokes is not an
|
1243 |
|
|
* AWTKeyStroke, or if any keystroke represents a KEY_TYPED event, or if any
|
1244 |
|
|
* keystroke already maps to another focus traversal operation for this
|
1245 |
|
|
* Container.
|
1246 |
|
|
*
|
1247 |
|
|
* @since 1.4
|
1248 |
|
|
*/
|
1249 |
|
|
public void setFocusTraversalKeys(int id, Set keystrokes)
|
1250 |
|
|
{
|
1251 |
|
|
if (id != KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS &&
|
1252 |
|
|
id != KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS &&
|
1253 |
|
|
id != KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS &&
|
1254 |
|
|
id != KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS)
|
1255 |
|
|
throw new IllegalArgumentException ();
|
1256 |
|
|
|
1257 |
|
|
if (keystrokes == null)
|
1258 |
|
|
{
|
1259 |
|
|
Container parent = getParent ();
|
1260 |
|
|
|
1261 |
|
|
while (parent != null)
|
1262 |
|
|
{
|
1263 |
|
|
if (parent.areFocusTraversalKeysSet (id))
|
1264 |
|
|
{
|
1265 |
|
|
keystrokes = parent.getFocusTraversalKeys (id);
|
1266 |
|
|
break;
|
1267 |
|
|
}
|
1268 |
|
|
parent = parent.getParent ();
|
1269 |
|
|
}
|
1270 |
|
|
|
1271 |
|
|
if (keystrokes == null)
|
1272 |
|
|
keystrokes = KeyboardFocusManager.getCurrentKeyboardFocusManager ().
|
1273 |
|
|
getDefaultFocusTraversalKeys (id);
|
1274 |
|
|
}
|
1275 |
|
|
|
1276 |
|
|
Set sa;
|
1277 |
|
|
Set sb;
|
1278 |
|
|
Set sc;
|
1279 |
|
|
String name;
|
1280 |
|
|
switch (id)
|
1281 |
|
|
{
|
1282 |
|
|
case KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS:
|
1283 |
|
|
sa = getFocusTraversalKeys
|
1284 |
|
|
(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS);
|
1285 |
|
|
sb = getFocusTraversalKeys
|
1286 |
|
|
(KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS);
|
1287 |
|
|
sc = getFocusTraversalKeys
|
1288 |
|
|
(KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS);
|
1289 |
|
|
name = "forwardFocusTraversalKeys";
|
1290 |
|
|
break;
|
1291 |
|
|
case KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS:
|
1292 |
|
|
sa = getFocusTraversalKeys
|
1293 |
|
|
(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS);
|
1294 |
|
|
sb = getFocusTraversalKeys
|
1295 |
|
|
(KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS);
|
1296 |
|
|
sc = getFocusTraversalKeys
|
1297 |
|
|
(KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS);
|
1298 |
|
|
name = "backwardFocusTraversalKeys";
|
1299 |
|
|
break;
|
1300 |
|
|
case KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS:
|
1301 |
|
|
sa = getFocusTraversalKeys
|
1302 |
|
|
(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS);
|
1303 |
|
|
sb = getFocusTraversalKeys
|
1304 |
|
|
(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS);
|
1305 |
|
|
sc = getFocusTraversalKeys
|
1306 |
|
|
(KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS);
|
1307 |
|
|
name = "upCycleFocusTraversalKeys";
|
1308 |
|
|
break;
|
1309 |
|
|
case KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS:
|
1310 |
|
|
sa = getFocusTraversalKeys
|
1311 |
|
|
(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS);
|
1312 |
|
|
sb = getFocusTraversalKeys
|
1313 |
|
|
(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS);
|
1314 |
|
|
sc = getFocusTraversalKeys
|
1315 |
|
|
(KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS);
|
1316 |
|
|
name = "downCycleFocusTraversalKeys";
|
1317 |
|
|
break;
|
1318 |
|
|
default:
|
1319 |
|
|
throw new IllegalArgumentException ();
|
1320 |
|
|
}
|
1321 |
|
|
|
1322 |
|
|
int i = keystrokes.size ();
|
1323 |
|
|
Iterator iter = keystrokes.iterator ();
|
1324 |
|
|
|
1325 |
|
|
while (--i >= 0)
|
1326 |
|
|
{
|
1327 |
|
|
Object o = iter.next ();
|
1328 |
|
|
if (!(o instanceof AWTKeyStroke)
|
1329 |
|
|
|| sa.contains (o) || sb.contains (o) || sc.contains (o)
|
1330 |
|
|
|| ((AWTKeyStroke) o).keyCode == KeyEvent.VK_UNDEFINED)
|
1331 |
|
|
throw new IllegalArgumentException ();
|
1332 |
|
|
}
|
1333 |
|
|
|
1334 |
|
|
if (focusTraversalKeys == null)
|
1335 |
|
|
focusTraversalKeys = new Set[4];
|
1336 |
|
|
|
1337 |
|
|
keystrokes = Collections.unmodifiableSet (new HashSet (keystrokes));
|
1338 |
|
|
firePropertyChange (name, focusTraversalKeys[id], keystrokes);
|
1339 |
|
|
|
1340 |
|
|
focusTraversalKeys[id] = keystrokes;
|
1341 |
|
|
}
|
1342 |
|
|
|
1343 |
|
|
/**
|
1344 |
|
|
* Returns the Set of focus traversal keys for a given traversal operation for
|
1345 |
|
|
* this Container.
|
1346 |
|
|
*
|
1347 |
|
|
* @exception IllegalArgumentException If id is not one of
|
1348 |
|
|
* KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
|
1349 |
|
|
* KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,
|
1350 |
|
|
* KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS,
|
1351 |
|
|
* or KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS.
|
1352 |
|
|
*
|
1353 |
|
|
* @since 1.4
|
1354 |
|
|
*/
|
1355 |
|
|
public Set getFocusTraversalKeys (int id)
|
1356 |
|
|
{
|
1357 |
|
|
if (id != KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS &&
|
1358 |
|
|
id != KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS &&
|
1359 |
|
|
id != KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS &&
|
1360 |
|
|
id != KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS)
|
1361 |
|
|
throw new IllegalArgumentException ();
|
1362 |
|
|
|
1363 |
|
|
Set s = null;
|
1364 |
|
|
|
1365 |
|
|
if (focusTraversalKeys != null)
|
1366 |
|
|
s = focusTraversalKeys[id];
|
1367 |
|
|
|
1368 |
|
|
if (s == null && parent != null)
|
1369 |
|
|
s = parent.getFocusTraversalKeys (id);
|
1370 |
|
|
|
1371 |
|
|
return s == null ? (KeyboardFocusManager.getCurrentKeyboardFocusManager()
|
1372 |
|
|
.getDefaultFocusTraversalKeys(id)) : s;
|
1373 |
|
|
}
|
1374 |
|
|
|
1375 |
|
|
/**
|
1376 |
|
|
* Returns whether the Set of focus traversal keys for the given focus
|
1377 |
|
|
* traversal operation has been explicitly defined for this Container.
|
1378 |
|
|
* If this method returns false, this Container is inheriting the Set from
|
1379 |
|
|
* an ancestor, or from the current KeyboardFocusManager.
|
1380 |
|
|
*
|
1381 |
|
|
* @exception IllegalArgumentException If id is not one of
|
1382 |
|
|
* KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
|
1383 |
|
|
* KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,
|
1384 |
|
|
* KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS,
|
1385 |
|
|
* or KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS.
|
1386 |
|
|
*
|
1387 |
|
|
* @since 1.4
|
1388 |
|
|
*/
|
1389 |
|
|
public boolean areFocusTraversalKeysSet (int id)
|
1390 |
|
|
{
|
1391 |
|
|
if (id != KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS &&
|
1392 |
|
|
id != KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS &&
|
1393 |
|
|
id != KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS &&
|
1394 |
|
|
id != KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS)
|
1395 |
|
|
throw new IllegalArgumentException ();
|
1396 |
|
|
|
1397 |
|
|
return focusTraversalKeys != null && focusTraversalKeys[id] != null;
|
1398 |
|
|
}
|
1399 |
|
|
|
1400 |
|
|
/**
|
1401 |
|
|
* Check whether the given Container is the focus cycle root of this
|
1402 |
|
|
* Container's focus traversal cycle. If this Container is a focus
|
1403 |
|
|
* cycle root itself, then it will be in two different focus cycles
|
1404 |
|
|
* -- it's own, and that of its ancestor focus cycle root's. In
|
1405 |
|
|
* that case, if <code>c</code> is either of those containers, this
|
1406 |
|
|
* method will return true.
|
1407 |
|
|
*
|
1408 |
|
|
* @param c the candidate Container
|
1409 |
|
|
*
|
1410 |
|
|
* @return true if c is the focus cycle root of the focus traversal
|
1411 |
|
|
* cycle to which this Container belongs, false otherwise
|
1412 |
|
|
*
|
1413 |
|
|
* @since 1.4
|
1414 |
|
|
*/
|
1415 |
|
|
public boolean isFocusCycleRoot (Container c)
|
1416 |
|
|
{
|
1417 |
|
|
if (this == c
|
1418 |
|
|
&& isFocusCycleRoot ())
|
1419 |
|
|
return true;
|
1420 |
|
|
|
1421 |
|
|
Container ancestor = getFocusCycleRootAncestor ();
|
1422 |
|
|
|
1423 |
|
|
if (c == ancestor)
|
1424 |
|
|
return true;
|
1425 |
|
|
|
1426 |
|
|
return false;
|
1427 |
|
|
}
|
1428 |
|
|
|
1429 |
|
|
/**
|
1430 |
|
|
* If this Container is a focus cycle root, set the focus traversal
|
1431 |
|
|
* policy that determines the focus traversal order for its
|
1432 |
|
|
* children. If non-null, this policy will be inherited by all
|
1433 |
|
|
* inferior focus cycle roots. If <code>policy</code> is null, this
|
1434 |
|
|
* Container will inherit its policy from the closest ancestor focus
|
1435 |
|
|
* cycle root that's had its policy set.
|
1436 |
|
|
*
|
1437 |
|
|
* @param policy the new focus traversal policy for this Container or null
|
1438 |
|
|
*
|
1439 |
|
|
* @since 1.4
|
1440 |
|
|
*/
|
1441 |
|
|
public void setFocusTraversalPolicy (FocusTraversalPolicy policy)
|
1442 |
|
|
{
|
1443 |
|
|
focusTraversalPolicy = policy;
|
1444 |
|
|
}
|
1445 |
|
|
|
1446 |
|
|
/**
|
1447 |
|
|
* Return the focus traversal policy that determines the focus
|
1448 |
|
|
* traversal order for this Container's children. This method
|
1449 |
|
|
* returns null if this Container is not a focus cycle root. If the
|
1450 |
|
|
* focus traversal policy has not been set explicitly, then this
|
1451 |
|
|
* method will return an ancestor focus cycle root's policy instead.
|
1452 |
|
|
*
|
1453 |
|
|
* @return this Container's focus traversal policy or null
|
1454 |
|
|
*
|
1455 |
|
|
* @since 1.4
|
1456 |
|
|
*/
|
1457 |
|
|
public FocusTraversalPolicy getFocusTraversalPolicy ()
|
1458 |
|
|
{
|
1459 |
|
|
if (!isFocusCycleRoot ())
|
1460 |
|
|
return null;
|
1461 |
|
|
|
1462 |
|
|
if (focusTraversalPolicy == null)
|
1463 |
|
|
{
|
1464 |
|
|
Container ancestor = getFocusCycleRootAncestor ();
|
1465 |
|
|
|
1466 |
|
|
if (ancestor != this)
|
1467 |
|
|
return ancestor.getFocusTraversalPolicy ();
|
1468 |
|
|
else
|
1469 |
|
|
{
|
1470 |
|
|
KeyboardFocusManager manager = KeyboardFocusManager.getCurrentKeyboardFocusManager ();
|
1471 |
|
|
|
1472 |
|
|
return manager.getDefaultFocusTraversalPolicy ();
|
1473 |
|
|
}
|
1474 |
|
|
}
|
1475 |
|
|
else
|
1476 |
|
|
return focusTraversalPolicy;
|
1477 |
|
|
}
|
1478 |
|
|
|
1479 |
|
|
/**
|
1480 |
|
|
* Check whether this Container's focus traversal policy has been
|
1481 |
|
|
* explicitly set. If it has not, then this Container will inherit
|
1482 |
|
|
* its focus traversal policy from one of its ancestor focus cycle
|
1483 |
|
|
* roots.
|
1484 |
|
|
*
|
1485 |
|
|
* @return true if focus traversal policy is set, false otherwise
|
1486 |
|
|
*/
|
1487 |
|
|
public boolean isFocusTraversalPolicySet ()
|
1488 |
|
|
{
|
1489 |
|
|
return focusTraversalPolicy == null;
|
1490 |
|
|
}
|
1491 |
|
|
|
1492 |
|
|
/**
|
1493 |
|
|
* Set whether or not this Container is the root of a focus
|
1494 |
|
|
* traversal cycle. This Container's focus traversal policy
|
1495 |
|
|
* determines the order of focus traversal. Some policies prevent
|
1496 |
|
|
* the focus from being transferred between two traversal cycles
|
1497 |
|
|
* until an up or down traversal operation is performed. In that
|
1498 |
|
|
* case, normal traversal (not up or down) is limited to this
|
1499 |
|
|
* Container and all of this Container's descendents that are not
|
1500 |
|
|
* descendents of inferior focus cycle roots. In the default case
|
1501 |
|
|
* however, ContainerOrderFocusTraversalPolicy is in effect, and it
|
1502 |
|
|
* supports implicit down-cycle traversal operations.
|
1503 |
|
|
*
|
1504 |
|
|
* @param focusCycleRoot true if this is a focus cycle root, false otherwise
|
1505 |
|
|
*
|
1506 |
|
|
* @since 1.4
|
1507 |
|
|
*/
|
1508 |
|
|
public void setFocusCycleRoot (boolean focusCycleRoot)
|
1509 |
|
|
{
|
1510 |
|
|
this.focusCycleRoot = focusCycleRoot;
|
1511 |
|
|
}
|
1512 |
|
|
|
1513 |
|
|
/**
|
1514 |
|
|
* Check whether this Container is a focus cycle root.
|
1515 |
|
|
*
|
1516 |
|
|
* @return true if this is a focus cycle root, false otherwise
|
1517 |
|
|
*
|
1518 |
|
|
* @since 1.4
|
1519 |
|
|
*/
|
1520 |
|
|
public boolean isFocusCycleRoot ()
|
1521 |
|
|
{
|
1522 |
|
|
return focusCycleRoot;
|
1523 |
|
|
}
|
1524 |
|
|
|
1525 |
|
|
/**
|
1526 |
|
|
* Transfer focus down one focus traversal cycle. If this Container
|
1527 |
|
|
* is a focus cycle root, then its default component becomes the
|
1528 |
|
|
* focus owner, and this Container becomes the current focus cycle
|
1529 |
|
|
* root. No traversal will occur if this Container is not a focus
|
1530 |
|
|
* cycle root.
|
1531 |
|
|
*
|
1532 |
|
|
* @since 1.4
|
1533 |
|
|
*/
|
1534 |
|
|
public void transferFocusDownCycle ()
|
1535 |
|
|
{
|
1536 |
|
|
KeyboardFocusManager manager = KeyboardFocusManager.getCurrentKeyboardFocusManager ();
|
1537 |
|
|
|
1538 |
|
|
manager.downFocusCycle (this);
|
1539 |
|
|
}
|
1540 |
|
|
|
1541 |
|
|
/**
|
1542 |
|
|
* Sets the ComponentOrientation property of this container and all components
|
1543 |
|
|
* contained within it.
|
1544 |
|
|
*
|
1545 |
|
|
* @exception NullPointerException If orientation is null
|
1546 |
|
|
*
|
1547 |
|
|
* @since 1.4
|
1548 |
|
|
*/
|
1549 |
|
|
public void applyComponentOrientation (ComponentOrientation orientation)
|
1550 |
|
|
{
|
1551 |
|
|
if (orientation == null)
|
1552 |
|
|
throw new NullPointerException ();
|
1553 |
|
|
}
|
1554 |
|
|
|
1555 |
|
|
public void addPropertyChangeListener (PropertyChangeListener listener)
|
1556 |
|
|
{
|
1557 |
|
|
if (listener == null)
|
1558 |
|
|
return;
|
1559 |
|
|
|
1560 |
|
|
if (changeSupport == null)
|
1561 |
|
|
changeSupport = new PropertyChangeSupport (this);
|
1562 |
|
|
|
1563 |
|
|
changeSupport.addPropertyChangeListener (listener);
|
1564 |
|
|
}
|
1565 |
|
|
|
1566 |
|
|
public void addPropertyChangeListener (String name,
|
1567 |
|
|
PropertyChangeListener listener)
|
1568 |
|
|
{
|
1569 |
|
|
if (listener == null)
|
1570 |
|
|
return;
|
1571 |
|
|
|
1572 |
|
|
if (changeSupport == null)
|
1573 |
|
|
changeSupport = new PropertyChangeSupport (this);
|
1574 |
|
|
|
1575 |
|
|
changeSupport.addPropertyChangeListener (name, listener);
|
1576 |
|
|
}
|
1577 |
|
|
|
1578 |
|
|
// Hidden helper methods.
|
1579 |
|
|
|
1580 |
|
|
/**
|
1581 |
|
|
* Perform a graphics operation on the children of this container.
|
1582 |
|
|
* For each applicable child, the visitChild() method will be called
|
1583 |
|
|
* to perform the graphics operation.
|
1584 |
|
|
*
|
1585 |
|
|
* @param gfx The graphics object that will be used to derive new
|
1586 |
|
|
* graphics objects for the children.
|
1587 |
|
|
*
|
1588 |
|
|
* @param visitor Object encapsulating the graphics operation that
|
1589 |
|
|
* should be performed.
|
1590 |
|
|
*
|
1591 |
|
|
* @param lightweightOnly If true, only lightweight components will
|
1592 |
|
|
* be visited.
|
1593 |
|
|
*/
|
1594 |
|
|
private void visitChildren(Graphics gfx, GfxVisitor visitor,
|
1595 |
|
|
boolean lightweightOnly)
|
1596 |
|
|
{
|
1597 |
|
|
synchronized (getTreeLock ())
|
1598 |
|
|
{
|
1599 |
|
|
for (int i = ncomponents - 1; i >= 0; --i)
|
1600 |
|
|
{
|
1601 |
|
|
Component comp = component[i];
|
1602 |
|
|
boolean applicable = comp.isVisible()
|
1603 |
|
|
&& (comp.isLightweight() || !lightweightOnly);
|
1604 |
|
|
|
1605 |
|
|
if (applicable)
|
1606 |
|
|
visitChild(gfx, visitor, comp);
|
1607 |
|
|
}
|
1608 |
|
|
}
|
1609 |
|
|
}
|
1610 |
|
|
|
1611 |
|
|
/**
|
1612 |
|
|
* Perform a graphics operation on a child. A translated and clipped
|
1613 |
|
|
* graphics object will be created, and the visit() method of the
|
1614 |
|
|
* visitor will be called to perform the operation.
|
1615 |
|
|
*
|
1616 |
|
|
* @param gfx The graphics object that will be used to derive new
|
1617 |
|
|
* graphics objects for the child.
|
1618 |
|
|
*
|
1619 |
|
|
* @param visitor Object encapsulating the graphics operation that
|
1620 |
|
|
* should be performed.
|
1621 |
|
|
*
|
1622 |
|
|
* @param comp The child component that should be visited.
|
1623 |
|
|
*/
|
1624 |
|
|
private void visitChild(Graphics gfx, GfxVisitor visitor,
|
1625 |
|
|
Component comp)
|
1626 |
|
|
{
|
1627 |
|
|
Rectangle bounds = comp.getBounds();
|
1628 |
|
|
Rectangle oldClip = gfx.getClipBounds();
|
1629 |
|
|
if (oldClip == null)
|
1630 |
|
|
oldClip = bounds;
|
1631 |
|
|
|
1632 |
|
|
Rectangle clip = oldClip.intersection(bounds);
|
1633 |
|
|
|
1634 |
|
|
if (clip.isEmpty()) return;
|
1635 |
|
|
|
1636 |
|
|
boolean clipped = false;
|
1637 |
|
|
boolean translated = false;
|
1638 |
|
|
try
|
1639 |
|
|
{
|
1640 |
|
|
gfx.setClip(clip.x, clip.y, clip.width, clip.height);
|
1641 |
|
|
clipped = true;
|
1642 |
|
|
gfx.translate(bounds.x, bounds.y);
|
1643 |
|
|
translated = true;
|
1644 |
|
|
visitor.visit(comp, gfx);
|
1645 |
|
|
}
|
1646 |
|
|
finally
|
1647 |
|
|
{
|
1648 |
|
|
if (translated)
|
1649 |
|
|
gfx.translate (-bounds.x, -bounds.y);
|
1650 |
|
|
if (clipped)
|
1651 |
|
|
gfx.setClip (oldClip.x, oldClip.y, oldClip.width, oldClip.height);
|
1652 |
|
|
}
|
1653 |
|
|
}
|
1654 |
|
|
|
1655 |
|
|
void dispatchEventImpl(AWTEvent e)
|
1656 |
|
|
{
|
1657 |
|
|
// Give lightweight dispatcher a chance to handle it.
|
1658 |
|
|
if (dispatcher != null && dispatcher.handleEvent (e))
|
1659 |
|
|
return;
|
1660 |
|
|
|
1661 |
|
|
if ((e.id <= ContainerEvent.CONTAINER_LAST
|
1662 |
|
|
&& e.id >= ContainerEvent.CONTAINER_FIRST)
|
1663 |
|
|
&& (containerListener != null
|
1664 |
|
|
|| (eventMask & AWTEvent.CONTAINER_EVENT_MASK) != 0))
|
1665 |
|
|
processEvent(e);
|
1666 |
|
|
else
|
1667 |
|
|
super.dispatchEventImpl(e);
|
1668 |
|
|
}
|
1669 |
|
|
|
1670 |
|
|
/**
|
1671 |
|
|
* Tests if this container has an interest in the given event id.
|
1672 |
|
|
*
|
1673 |
|
|
* @param eventId The event id to check.
|
1674 |
|
|
*
|
1675 |
|
|
* @return <code>true</code> if a listener for the event id exists or
|
1676 |
|
|
* if the eventMask is set for the event id.
|
1677 |
|
|
*
|
1678 |
|
|
* @see java.awt.Component#eventTypeEnabled(int)
|
1679 |
|
|
*/
|
1680 |
|
|
boolean eventTypeEnabled(int eventId)
|
1681 |
|
|
{
|
1682 |
|
|
if(eventId <= ContainerEvent.CONTAINER_LAST
|
1683 |
|
|
&& eventId >= ContainerEvent.CONTAINER_FIRST)
|
1684 |
|
|
return containerListener != null
|
1685 |
|
|
|| (eventMask & AWTEvent.CONTAINER_EVENT_MASK) != 0;
|
1686 |
|
|
else
|
1687 |
|
|
return super.eventTypeEnabled(eventId);
|
1688 |
|
|
}
|
1689 |
|
|
|
1690 |
|
|
// This is used to implement Component.transferFocus.
|
1691 |
|
|
Component findNextFocusComponent(Component child)
|
1692 |
|
|
{
|
1693 |
|
|
synchronized (getTreeLock ())
|
1694 |
|
|
{
|
1695 |
|
|
int start, end;
|
1696 |
|
|
if (child != null)
|
1697 |
|
|
{
|
1698 |
|
|
for (start = 0; start < ncomponents; ++start)
|
1699 |
|
|
{
|
1700 |
|
|
if (component[start] == child)
|
1701 |
|
|
break;
|
1702 |
|
|
}
|
1703 |
|
|
end = start;
|
1704 |
|
|
// This special case lets us be sure to terminate.
|
1705 |
|
|
if (end == 0)
|
1706 |
|
|
end = ncomponents;
|
1707 |
|
|
++start;
|
1708 |
|
|
}
|
1709 |
|
|
else
|
1710 |
|
|
{
|
1711 |
|
|
start = 0;
|
1712 |
|
|
end = ncomponents;
|
1713 |
|
|
}
|
1714 |
|
|
|
1715 |
|
|
for (int j = start; j != end; ++j)
|
1716 |
|
|
{
|
1717 |
|
|
if (j >= ncomponents)
|
1718 |
|
|
{
|
1719 |
|
|
// The JCL says that we should wrap here. However, that
|
1720 |
|
|
// seems wrong. To me it seems that focus order should be
|
1721 |
|
|
// global within in given window. So instead if we reach
|
1722 |
|
|
// the end we try to look in our parent, if we have one.
|
1723 |
|
|
if (parent != null)
|
1724 |
|
|
return parent.findNextFocusComponent(this);
|
1725 |
|
|
j -= ncomponents;
|
1726 |
|
|
}
|
1727 |
|
|
if (component[j] instanceof Container)
|
1728 |
|
|
{
|
1729 |
|
|
Component c = component[j];
|
1730 |
|
|
c = c.findNextFocusComponent(null);
|
1731 |
|
|
if (c != null)
|
1732 |
|
|
return c;
|
1733 |
|
|
}
|
1734 |
|
|
else if (component[j].isFocusTraversable())
|
1735 |
|
|
return component[j];
|
1736 |
|
|
}
|
1737 |
|
|
|
1738 |
|
|
return null;
|
1739 |
|
|
}
|
1740 |
|
|
}
|
1741 |
|
|
|
1742 |
|
|
private void addNotifyContainerChildren()
|
1743 |
|
|
{
|
1744 |
|
|
synchronized (getTreeLock ())
|
1745 |
|
|
{
|
1746 |
|
|
for (int i = ncomponents; --i >= 0; )
|
1747 |
|
|
{
|
1748 |
|
|
component[i].addNotify();
|
1749 |
|
|
if (component[i].isLightweight ())
|
1750 |
|
|
{
|
1751 |
|
|
|
1752 |
|
|
// If we're not lightweight, and we just got a lightweight
|
1753 |
|
|
// child, we need a lightweight dispatcher to feed it events.
|
1754 |
|
|
if (!this.isLightweight() && dispatcher == null)
|
1755 |
|
|
dispatcher = new LightweightDispatcher (this);
|
1756 |
|
|
|
1757 |
|
|
if (dispatcher != null)
|
1758 |
|
|
dispatcher.enableEvents(component[i].eventMask);
|
1759 |
|
|
|
1760 |
|
|
enableEvents(component[i].eventMask);
|
1761 |
|
|
if (peer != null && !isLightweight ())
|
1762 |
|
|
enableEvents (AWTEvent.PAINT_EVENT_MASK);
|
1763 |
|
|
}
|
1764 |
|
|
}
|
1765 |
|
|
}
|
1766 |
|
|
}
|
1767 |
|
|
|
1768 |
|
|
/**
|
1769 |
|
|
* Deserialize this Container:
|
1770 |
|
|
* <ol>
|
1771 |
|
|
* <li>Read from the stream the default serializable fields.</li>
|
1772 |
|
|
* <li>Read a list of serializable ContainerListeners as optional
|
1773 |
|
|
* data. If the list is null, no listeners will be registered.</li>
|
1774 |
|
|
* <li>Read this Container's FocusTraversalPolicy as optional data.
|
1775 |
|
|
* If this is null, then this Container will use a
|
1776 |
|
|
* DefaultFocusTraversalPolicy.</li>
|
1777 |
|
|
* </ol>
|
1778 |
|
|
*
|
1779 |
|
|
* @param s the stream to read from
|
1780 |
|
|
* @throws ClassNotFoundException if deserialization fails
|
1781 |
|
|
* @throws IOException if the stream fails
|
1782 |
|
|
*/
|
1783 |
|
|
private void readObject (ObjectInputStream s)
|
1784 |
|
|
throws ClassNotFoundException, IOException
|
1785 |
|
|
{
|
1786 |
|
|
s.defaultReadObject ();
|
1787 |
|
|
String key = (String) s.readObject ();
|
1788 |
|
|
while (key != null)
|
1789 |
|
|
{
|
1790 |
|
|
Object object = s.readObject ();
|
1791 |
|
|
if ("containerL".equals (key))
|
1792 |
|
|
addContainerListener((ContainerListener) object);
|
1793 |
|
|
// FIXME: under what key is the focus traversal policy stored?
|
1794 |
|
|
else if ("focusTraversalPolicy".equals (key))
|
1795 |
|
|
setFocusTraversalPolicy ((FocusTraversalPolicy) object);
|
1796 |
|
|
|
1797 |
|
|
key = (String) s.readObject();
|
1798 |
|
|
}
|
1799 |
|
|
}
|
1800 |
|
|
|
1801 |
|
|
/**
|
1802 |
|
|
* Serialize this Container:
|
1803 |
|
|
* <ol>
|
1804 |
|
|
* <li>Write to the stream the default serializable fields.</li>
|
1805 |
|
|
* <li>Write the list of serializable ContainerListeners as optional
|
1806 |
|
|
* data.</li>
|
1807 |
|
|
* <li>Write this Container's FocusTraversalPolicy as optional data.</li>
|
1808 |
|
|
* </ol>
|
1809 |
|
|
*
|
1810 |
|
|
* @param s the stream to write to
|
1811 |
|
|
* @throws IOException if the stream fails
|
1812 |
|
|
*/
|
1813 |
|
|
private void writeObject (ObjectOutputStream s) throws IOException
|
1814 |
|
|
{
|
1815 |
|
|
s.defaultWriteObject ();
|
1816 |
|
|
AWTEventMulticaster.save (s, "containerL", containerListener);
|
1817 |
|
|
if (focusTraversalPolicy instanceof Serializable)
|
1818 |
|
|
s.writeObject (focusTraversalPolicy);
|
1819 |
|
|
else
|
1820 |
|
|
s.writeObject (null);
|
1821 |
|
|
}
|
1822 |
|
|
|
1823 |
|
|
// Nested classes.
|
1824 |
|
|
|
1825 |
|
|
/* The following classes are used in concert with the
|
1826 |
|
|
visitChildren() method to implement all the graphics operations
|
1827 |
|
|
that requires traversal of the containment hierarchy. */
|
1828 |
|
|
|
1829 |
|
|
abstract static class GfxVisitor
|
1830 |
|
|
{
|
1831 |
|
|
public abstract void visit(Component c, Graphics gfx);
|
1832 |
|
|
}
|
1833 |
|
|
|
1834 |
|
|
static class GfxPaintVisitor extends GfxVisitor
|
1835 |
|
|
{
|
1836 |
|
|
public static final GfxVisitor INSTANCE = new GfxPaintVisitor();
|
1837 |
|
|
|
1838 |
|
|
public void visit(Component c, Graphics gfx)
|
1839 |
|
|
{
|
1840 |
|
|
c.paint(gfx);
|
1841 |
|
|
}
|
1842 |
|
|
}
|
1843 |
|
|
|
1844 |
|
|
static class GfxPrintVisitor extends GfxVisitor
|
1845 |
|
|
{
|
1846 |
|
|
public static final GfxVisitor INSTANCE = new GfxPrintVisitor();
|
1847 |
|
|
|
1848 |
|
|
public void visit(Component c, Graphics gfx)
|
1849 |
|
|
{
|
1850 |
|
|
c.print(gfx);
|
1851 |
|
|
}
|
1852 |
|
|
}
|
1853 |
|
|
|
1854 |
|
|
static class GfxPaintAllVisitor extends GfxVisitor
|
1855 |
|
|
{
|
1856 |
|
|
public static final GfxVisitor INSTANCE = new GfxPaintAllVisitor();
|
1857 |
|
|
|
1858 |
|
|
public void visit(Component c, Graphics gfx)
|
1859 |
|
|
{
|
1860 |
|
|
c.paintAll(gfx);
|
1861 |
|
|
}
|
1862 |
|
|
}
|
1863 |
|
|
|
1864 |
|
|
static class GfxPrintAllVisitor extends GfxVisitor
|
1865 |
|
|
{
|
1866 |
|
|
public static final GfxVisitor INSTANCE = new GfxPrintAllVisitor();
|
1867 |
|
|
|
1868 |
|
|
public void visit(Component c, Graphics gfx)
|
1869 |
|
|
{
|
1870 |
|
|
c.printAll(gfx);
|
1871 |
|
|
}
|
1872 |
|
|
}
|
1873 |
|
|
|
1874 |
|
|
/**
|
1875 |
|
|
* This class provides accessibility support for subclasses of container.
|
1876 |
|
|
*
|
1877 |
|
|
* @author Eric Blake (ebb9@email.byu.edu)
|
1878 |
|
|
*
|
1879 |
|
|
* @since 1.3
|
1880 |
|
|
*/
|
1881 |
|
|
protected class AccessibleAWTContainer extends AccessibleAWTComponent
|
1882 |
|
|
{
|
1883 |
|
|
/**
|
1884 |
|
|
* Compatible with JDK 1.4+.
|
1885 |
|
|
*/
|
1886 |
|
|
private static final long serialVersionUID = 5081320404842566097L;
|
1887 |
|
|
|
1888 |
|
|
/**
|
1889 |
|
|
* The handler to fire PropertyChange when children are added or removed.
|
1890 |
|
|
*
|
1891 |
|
|
* @serial the handler for property changes
|
1892 |
|
|
*/
|
1893 |
|
|
protected ContainerListener accessibleContainerHandler
|
1894 |
|
|
= new AccessibleContainerHandler();
|
1895 |
|
|
|
1896 |
|
|
/**
|
1897 |
|
|
* The default constructor.
|
1898 |
|
|
*/
|
1899 |
|
|
protected AccessibleAWTContainer()
|
1900 |
|
|
{
|
1901 |
|
|
Container.this.addContainerListener(accessibleContainerHandler);
|
1902 |
|
|
}
|
1903 |
|
|
|
1904 |
|
|
/**
|
1905 |
|
|
* Return the number of accessible children of the containing accessible
|
1906 |
|
|
* object (at most the total number of its children).
|
1907 |
|
|
*
|
1908 |
|
|
* @return the number of accessible children
|
1909 |
|
|
*/
|
1910 |
|
|
public int getAccessibleChildrenCount()
|
1911 |
|
|
{
|
1912 |
|
|
synchronized (getTreeLock ())
|
1913 |
|
|
{
|
1914 |
|
|
int count = 0;
|
1915 |
|
|
int i = component == null ? 0 : component.length;
|
1916 |
|
|
while (--i >= 0)
|
1917 |
|
|
if (component[i] instanceof Accessible)
|
1918 |
|
|
count++;
|
1919 |
|
|
return count;
|
1920 |
|
|
}
|
1921 |
|
|
}
|
1922 |
|
|
|
1923 |
|
|
/**
|
1924 |
|
|
* Return the nth accessible child of the containing accessible object.
|
1925 |
|
|
*
|
1926 |
|
|
* @param i the child to grab, zero-based
|
1927 |
|
|
* @return the accessible child, or null
|
1928 |
|
|
*/
|
1929 |
|
|
public Accessible getAccessibleChild(int i)
|
1930 |
|
|
{
|
1931 |
|
|
synchronized (getTreeLock ())
|
1932 |
|
|
{
|
1933 |
|
|
if (component == null)
|
1934 |
|
|
return null;
|
1935 |
|
|
int index = -1;
|
1936 |
|
|
while (i >= 0 && ++index < component.length)
|
1937 |
|
|
if (component[index] instanceof Accessible)
|
1938 |
|
|
i--;
|
1939 |
|
|
if (i < 0)
|
1940 |
|
|
return (Accessible) component[index];
|
1941 |
|
|
return null;
|
1942 |
|
|
}
|
1943 |
|
|
}
|
1944 |
|
|
|
1945 |
|
|
/**
|
1946 |
|
|
* Return the accessible child located at point (in the parent's
|
1947 |
|
|
* coordinates), if one exists.
|
1948 |
|
|
*
|
1949 |
|
|
* @param p the point to look at
|
1950 |
|
|
*
|
1951 |
|
|
* @return an accessible object at that point, or null
|
1952 |
|
|
*
|
1953 |
|
|
* @throws NullPointerException if p is null
|
1954 |
|
|
*/
|
1955 |
|
|
public Accessible getAccessibleAt(Point p)
|
1956 |
|
|
{
|
1957 |
|
|
Component c = getComponentAt(p.x, p.y);
|
1958 |
|
|
return c != Container.this && c instanceof Accessible ? (Accessible) c
|
1959 |
|
|
: null;
|
1960 |
|
|
}
|
1961 |
|
|
|
1962 |
|
|
/**
|
1963 |
|
|
* This class fires a <code>PropertyChange</code> listener, if registered,
|
1964 |
|
|
* when children are added or removed from the enclosing accessible object.
|
1965 |
|
|
*
|
1966 |
|
|
* @author Eric Blake (ebb9@email.byu.edu)
|
1967 |
|
|
*
|
1968 |
|
|
* @since 1.3
|
1969 |
|
|
*/
|
1970 |
|
|
protected class AccessibleContainerHandler implements ContainerListener
|
1971 |
|
|
{
|
1972 |
|
|
/**
|
1973 |
|
|
* Default constructor.
|
1974 |
|
|
*/
|
1975 |
|
|
protected AccessibleContainerHandler()
|
1976 |
|
|
{
|
1977 |
|
|
// Nothing to do here.
|
1978 |
|
|
}
|
1979 |
|
|
|
1980 |
|
|
/**
|
1981 |
|
|
* Fired when a component is added; forwards to the PropertyChange
|
1982 |
|
|
* listener.
|
1983 |
|
|
*
|
1984 |
|
|
* @param e the container event for adding
|
1985 |
|
|
*/
|
1986 |
|
|
public void componentAdded(ContainerEvent e)
|
1987 |
|
|
{
|
1988 |
|
|
AccessibleAWTContainer.this.firePropertyChange
|
1989 |
|
|
(ACCESSIBLE_CHILD_PROPERTY, null, e.getChild());
|
1990 |
|
|
}
|
1991 |
|
|
|
1992 |
|
|
/**
|
1993 |
|
|
* Fired when a component is removed; forwards to the PropertyChange
|
1994 |
|
|
* listener.
|
1995 |
|
|
*
|
1996 |
|
|
* @param e the container event for removing
|
1997 |
|
|
*/
|
1998 |
|
|
public void componentRemoved(ContainerEvent e)
|
1999 |
|
|
{
|
2000 |
|
|
AccessibleAWTContainer.this.firePropertyChange
|
2001 |
|
|
(ACCESSIBLE_CHILD_PROPERTY, e.getChild(), null);
|
2002 |
|
|
}
|
2003 |
|
|
} // class AccessibleContainerHandler
|
2004 |
|
|
} // class AccessibleAWTContainer
|
2005 |
|
|
} // class Container
|
2006 |
|
|
|
2007 |
|
|
/**
|
2008 |
|
|
* There is a helper class implied from stack traces called
|
2009 |
|
|
* LightweightDispatcher, but since it is not part of the public API,
|
2010 |
|
|
* rather than mimic it exactly we write something which does "roughly
|
2011 |
|
|
* the same thing".
|
2012 |
|
|
*/
|
2013 |
|
|
class LightweightDispatcher implements Serializable
|
2014 |
|
|
{
|
2015 |
|
|
private static final long serialVersionUID = 5184291520170872969L;
|
2016 |
|
|
private Container nativeContainer;
|
2017 |
|
|
private Cursor nativeCursor;
|
2018 |
|
|
private long eventMask;
|
2019 |
|
|
|
2020 |
|
|
private transient Component pressedComponent;
|
2021 |
|
|
private transient Component lastComponentEntered;
|
2022 |
|
|
private transient int pressCount;
|
2023 |
|
|
|
2024 |
|
|
LightweightDispatcher(Container c)
|
2025 |
|
|
{
|
2026 |
|
|
nativeContainer = c;
|
2027 |
|
|
}
|
2028 |
|
|
|
2029 |
|
|
void enableEvents(long l)
|
2030 |
|
|
{
|
2031 |
|
|
eventMask |= l;
|
2032 |
|
|
}
|
2033 |
|
|
|
2034 |
|
|
/**
|
2035 |
|
|
* Returns the deepest visible descendent of parent that contains the
|
2036 |
|
|
* specified location and that is not transparent and MouseListener-less.
|
2037 |
|
|
* @param parent the root component to begin the search
|
2038 |
|
|
* @param x the x coordinate
|
2039 |
|
|
* @param y the y coordinate
|
2040 |
|
|
* @return null if <code>parent</code> doesn't contain the location,
|
2041 |
|
|
* parent if parent is not a container or has no child that contains the
|
2042 |
|
|
* location, otherwise the appropriate component from the conditions
|
2043 |
|
|
* above.
|
2044 |
|
|
*/
|
2045 |
|
|
Component getDeepestComponentForMouseEventAt(Component parent, int x, int y)
|
2046 |
|
|
{
|
2047 |
|
|
if (parent == null || (! parent.contains(x, y)))
|
2048 |
|
|
return null;
|
2049 |
|
|
|
2050 |
|
|
if (! (parent instanceof Container))
|
2051 |
|
|
return parent;
|
2052 |
|
|
|
2053 |
|
|
Container c = (Container) parent;
|
2054 |
|
|
return c.findComponentForMouseEventAt(x, y);
|
2055 |
|
|
}
|
2056 |
|
|
|
2057 |
|
|
Component acquireComponentForMouseEvent(MouseEvent me)
|
2058 |
|
|
{
|
2059 |
|
|
int x = me.getX ();
|
2060 |
|
|
int y = me.getY ();
|
2061 |
|
|
|
2062 |
|
|
Component mouseEventTarget = null;
|
2063 |
|
|
// Find the candidate which should receive this event.
|
2064 |
|
|
Component parent = nativeContainer;
|
2065 |
|
|
Component candidate = null;
|
2066 |
|
|
Point p = me.getPoint();
|
2067 |
|
|
while (candidate == null && parent != null)
|
2068 |
|
|
{
|
2069 |
|
|
candidate = getDeepestComponentForMouseEventAt(parent, p.x, p.y);
|
2070 |
|
|
if (candidate == null || (candidate.eventMask & me.getID()) == 0)
|
2071 |
|
|
{
|
2072 |
|
|
candidate = null;
|
2073 |
|
|
p = AWTUtilities.convertPoint(parent, p.x, p.y, parent.parent);
|
2074 |
|
|
parent = parent.parent;
|
2075 |
|
|
}
|
2076 |
|
|
}
|
2077 |
|
|
|
2078 |
|
|
// If the only candidate we found was the native container itself,
|
2079 |
|
|
// don't dispatch any event at all. We only care about the lightweight
|
2080 |
|
|
// children here.
|
2081 |
|
|
if (candidate == nativeContainer)
|
2082 |
|
|
candidate = null;
|
2083 |
|
|
|
2084 |
|
|
// If our candidate is new, inform the old target we're leaving.
|
2085 |
|
|
if (lastComponentEntered != null
|
2086 |
|
|
&& lastComponentEntered.isShowing()
|
2087 |
|
|
&& lastComponentEntered != candidate)
|
2088 |
|
|
{
|
2089 |
|
|
// Old candidate could have been removed from
|
2090 |
|
|
// the nativeContainer so we check first.
|
2091 |
|
|
if (AWTUtilities.isDescendingFrom(lastComponentEntered,
|
2092 |
|
|
nativeContainer))
|
2093 |
|
|
{
|
2094 |
|
|
Point tp = AWTUtilities.convertPoint(nativeContainer,
|
2095 |
|
|
x, y, lastComponentEntered);
|
2096 |
|
|
MouseEvent exited = new MouseEvent (lastComponentEntered,
|
2097 |
|
|
MouseEvent.MOUSE_EXITED,
|
2098 |
|
|
me.getWhen (),
|
2099 |
|
|
me.getModifiersEx (),
|
2100 |
|
|
tp.x, tp.y,
|
2101 |
|
|
me.getClickCount (),
|
2102 |
|
|
me.isPopupTrigger (),
|
2103 |
|
|
me.getButton ());
|
2104 |
|
|
lastComponentEntered.dispatchEvent (exited);
|
2105 |
|
|
}
|
2106 |
|
|
lastComponentEntered = null;
|
2107 |
|
|
}
|
2108 |
|
|
|
2109 |
|
|
// If we have a candidate, maybe enter it.
|
2110 |
|
|
if (candidate != null)
|
2111 |
|
|
{
|
2112 |
|
|
mouseEventTarget = candidate;
|
2113 |
|
|
if (candidate.isLightweight()
|
2114 |
|
|
&& candidate.isShowing()
|
2115 |
|
|
&& candidate != nativeContainer
|
2116 |
|
|
&& candidate != lastComponentEntered)
|
2117 |
|
|
{
|
2118 |
|
|
lastComponentEntered = mouseEventTarget;
|
2119 |
|
|
Point cp = AWTUtilities.convertPoint(nativeContainer,
|
2120 |
|
|
x, y, lastComponentEntered);
|
2121 |
|
|
MouseEvent entered = new MouseEvent (lastComponentEntered,
|
2122 |
|
|
MouseEvent.MOUSE_ENTERED,
|
2123 |
|
|
me.getWhen (),
|
2124 |
|
|
me.getModifiersEx (),
|
2125 |
|
|
cp.x, cp.y,
|
2126 |
|
|
me.getClickCount (),
|
2127 |
|
|
me.isPopupTrigger (),
|
2128 |
|
|
me.getButton ());
|
2129 |
|
|
lastComponentEntered.dispatchEvent (entered);
|
2130 |
|
|
}
|
2131 |
|
|
}
|
2132 |
|
|
|
2133 |
|
|
// Check which buttons where pressed except the last button that
|
2134 |
|
|
// changed state.
|
2135 |
|
|
int modifiers = me.getModifiersEx() & (MouseEvent.BUTTON1_DOWN_MASK
|
2136 |
|
|
| MouseEvent.BUTTON2_DOWN_MASK
|
2137 |
|
|
| MouseEvent.BUTTON3_DOWN_MASK);
|
2138 |
|
|
switch(me.getButton())
|
2139 |
|
|
{
|
2140 |
|
|
case MouseEvent.BUTTON1:
|
2141 |
|
|
modifiers &= ~MouseEvent.BUTTON1_DOWN_MASK;
|
2142 |
|
|
break;
|
2143 |
|
|
case MouseEvent.BUTTON2:
|
2144 |
|
|
modifiers &= ~MouseEvent.BUTTON2_DOWN_MASK;
|
2145 |
|
|
break;
|
2146 |
|
|
case MouseEvent.BUTTON3:
|
2147 |
|
|
modifiers &= ~MouseEvent.BUTTON3_DOWN_MASK;
|
2148 |
|
|
break;
|
2149 |
|
|
}
|
2150 |
|
|
|
2151 |
|
|
if (me.getID() == MouseEvent.MOUSE_PRESSED && modifiers > 0
|
2152 |
|
|
|| me.getID() == MouseEvent.MOUSE_DRAGGED)
|
2153 |
|
|
{
|
2154 |
|
|
// If any of the following events occur while a button is held down,
|
2155 |
|
|
// they should be dispatched to the same component to which the
|
2156 |
|
|
// original MOUSE_PRESSED event was dispatched:
|
2157 |
|
|
// - MOUSE_PRESSED: another button pressed while the first is held
|
2158 |
|
|
// down
|
2159 |
|
|
// - MOUSE_DRAGGED
|
2160 |
|
|
if (AWTUtilities.isDescendingFrom(pressedComponent, nativeContainer))
|
2161 |
|
|
mouseEventTarget = pressedComponent;
|
2162 |
|
|
}
|
2163 |
|
|
else if (me.getID() == MouseEvent.MOUSE_CLICKED)
|
2164 |
|
|
{
|
2165 |
|
|
// Don't dispatch CLICKED events whose target is not the same as the
|
2166 |
|
|
// target for the original PRESSED event.
|
2167 |
|
|
if (candidate != pressedComponent)
|
2168 |
|
|
{
|
2169 |
|
|
mouseEventTarget = null;
|
2170 |
|
|
pressCount = 0;
|
2171 |
|
|
}
|
2172 |
|
|
else if (pressCount == 0)
|
2173 |
|
|
pressedComponent = null;
|
2174 |
|
|
}
|
2175 |
|
|
return mouseEventTarget;
|
2176 |
|
|
}
|
2177 |
|
|
|
2178 |
|
|
boolean handleEvent(AWTEvent e)
|
2179 |
|
|
{
|
2180 |
|
|
if (e instanceof MouseEvent)
|
2181 |
|
|
{
|
2182 |
|
|
MouseEvent me = (MouseEvent) e;
|
2183 |
|
|
|
2184 |
|
|
// Make the LightWeightDispatcher reentrant. This is necessary when
|
2185 |
|
|
// a lightweight component does its own modal event queue.
|
2186 |
|
|
Component mouseEventTarget = acquireComponentForMouseEvent(me);
|
2187 |
|
|
|
2188 |
|
|
// Avoid dispatching ENTERED and EXITED events twice.
|
2189 |
|
|
if (mouseEventTarget != null
|
2190 |
|
|
&& mouseEventTarget.isShowing()
|
2191 |
|
|
&& e.getID() != MouseEvent.MOUSE_ENTERED
|
2192 |
|
|
&& e.getID() != MouseEvent.MOUSE_EXITED)
|
2193 |
|
|
{
|
2194 |
|
|
switch (e.getID())
|
2195 |
|
|
{
|
2196 |
|
|
case MouseEvent.MOUSE_PRESSED:
|
2197 |
|
|
if (pressCount++ == 0)
|
2198 |
|
|
pressedComponent = mouseEventTarget;
|
2199 |
|
|
break;
|
2200 |
|
|
case MouseEvent.MOUSE_RELEASED:
|
2201 |
|
|
// Clear our memory of the original PRESSED event, only if
|
2202 |
|
|
// we're not expecting a CLICKED event after this. If
|
2203 |
|
|
// there is a CLICKED event after this, it will do clean up.
|
2204 |
|
|
if (--pressCount == 0
|
2205 |
|
|
&& mouseEventTarget != pressedComponent)
|
2206 |
|
|
{
|
2207 |
|
|
pressedComponent = null;
|
2208 |
|
|
pressCount = 0;
|
2209 |
|
|
}
|
2210 |
|
|
break;
|
2211 |
|
|
}
|
2212 |
|
|
|
2213 |
|
|
MouseEvent newEvt =
|
2214 |
|
|
AWTUtilities.convertMouseEvent(nativeContainer, me,
|
2215 |
|
|
mouseEventTarget);
|
2216 |
|
|
mouseEventTarget.dispatchEvent(newEvt);
|
2217 |
|
|
|
2218 |
|
|
if (newEvt.isConsumed())
|
2219 |
|
|
e.consume();
|
2220 |
|
|
}
|
2221 |
|
|
}
|
2222 |
|
|
|
2223 |
|
|
return e.isConsumed();
|
2224 |
|
|
}
|
2225 |
|
|
}
|