window.java

linux下编程用 编译软件

    if (peer != null)
      {
	WindowPeer wp = (WindowPeer) peer;
	wp.toBack();
      }
  }

  /**
   * Brings this window to the front so that it displays in front of
   * any other windows.
   */
  public void toFront()
  {
    if (peer != null)
      {
        WindowPeer wp = (WindowPeer) peer;
        wp.toFront();
      }
  }

  /**
   * Returns the toolkit used to create this window.
   *
   * @return The toolkit used to create this window.
   *
   * @specnote Unlike Component.getToolkit, this implementation always 
   *           returns the value of Toolkit.getDefaultToolkit().
   */
  public Toolkit getToolkit()
  {
    return Toolkit.getDefaultToolkit();    
  }

  /**
   * Returns the warning string that will be displayed if this window is
   * popped up by an unsecure applet or application.
   *
   * @return The unsecure window warning message.
   */
  public final String getWarningString()
  {
    return warningString;
  }

  /**
   * Returns the locale that this window is configured for.
   *
   * @return The locale this window is configured for.
   */
  public Locale getLocale()
  {
    return locale == null ? Locale.getDefault() : locale;
  }

  /*
  /** @since 1.2
  public InputContext getInputContext()
  {
    // FIXME
  }
  */

  /**
   * Sets the cursor for this window to the specifiec cursor.
   *
   * @param cursor The new cursor for this window.
   */
  public void setCursor(Cursor cursor)
  {
    super.setCursor(cursor);
  }

  public Window getOwner()
  {
    return (Window) parent;
  }

  /** @since 1.2 */
  public Window[] getOwnedWindows()
  {
    Window [] trimmedList;
    synchronized (getTreeLock ())
      {
	// Windows with non-null weak references in ownedWindows.
	Window [] validList = new Window [ownedWindows.size()];

	Iterator e = ownedWindows.iterator();
	int numValid = 0;
	while (e.hasNext())
	  {
	    Window w = (Window)(((Reference) e.next()).get());
	    if (w != null)
	      validList[numValid++] = w;
	    else
	      // Remove null weak reference from ownedWindows.
	      e.remove();
	  }

	if (numValid != validList.length)
	  {
	    trimmedList = new Window [numValid];
	    System.arraycopy (validList, 0, trimmedList, 0, numValid);
	  }
	else
	  trimmedList = validList;
      }
    return trimmedList;
  }

  /**
   * Adds the specified listener to the list of <code>WindowListeners</code>
   * that will receive events for this window.
   *
   * @param listener The <code>WindowListener</code> to add.
   */
  public synchronized void addWindowListener(WindowListener listener)
  {
    windowListener = AWTEventMulticaster.add(windowListener, listener);
  }

  /**
   * Removes the specified listener from the list of
   * <code>WindowListeners</code> that will receive events for this window.
   *
   * @param listener The <code>WindowListener</code> to remove.
   */
  public synchronized void removeWindowListener(WindowListener listener)
  {
    windowListener = AWTEventMulticaster.remove(windowListener, listener);
  }

  /**
   * Returns an array of all the window listeners registered on this window.
   *
   * @since 1.4
   */
  public synchronized WindowListener[] getWindowListeners()
  {
    return (WindowListener[])
      AWTEventMulticaster.getListeners(windowListener,
                                       WindowListener.class);
  }

  /**
   * Returns an array of all the window focus listeners registered on this
   * window.
   *
   * @since 1.4
   */
  public synchronized WindowFocusListener[] getWindowFocusListeners()
  {
    return (WindowFocusListener[])
      AWTEventMulticaster.getListeners(windowFocusListener,
                                       WindowFocusListener.class);
  }
  
  /**
   * Returns an array of all the window state listeners registered on this
   * window.
   *
   * @since 1.4
   */
  public synchronized WindowStateListener[] getWindowStateListeners()
  {
    return (WindowStateListener[])
      AWTEventMulticaster.getListeners(windowStateListener,
                                       WindowStateListener.class);
  }

  /**
   * Adds the specified listener to this window.
   */
  public void addWindowFocusListener (WindowFocusListener wfl)
  {
    windowFocusListener = AWTEventMulticaster.add (windowFocusListener, wfl);
  }
  
  /**
   * Adds the specified listener to this window.
   *
   * @since 1.4
   */
  public void addWindowStateListener (WindowStateListener wsl)
  {
    windowStateListener = AWTEventMulticaster.add (windowStateListener, wsl);  
  }
  
  /**
   * Removes the specified listener from this window.
   */
  public void removeWindowFocusListener (WindowFocusListener wfl)
  {
    windowFocusListener = AWTEventMulticaster.remove (windowFocusListener, wfl);
  }
  
  /**
   * Removes the specified listener from this window.
   *
   * @since 1.4
   */
  public void removeWindowStateListener (WindowStateListener wsl)
  {
    windowStateListener = AWTEventMulticaster.remove (windowStateListener, wsl);
  }

  /**
   * Returns an array of all the objects currently registered as FooListeners
   * upon this Window. FooListeners are registered using the addFooListener
   * method.
   *
   * @exception ClassCastException If listenerType doesn't specify a class or
   * interface that implements java.util.EventListener.
   *
   * @since 1.3
   */
  public EventListener[] getListeners(Class listenerType)
  {
    if (listenerType == WindowListener.class)
      return getWindowListeners();
    return super.getListeners(listenerType);
  }

  void dispatchEventImpl(AWTEvent e)
  {
    // Make use of event id's in order to avoid multiple instanceof tests.
    if (e.id <= WindowEvent.WINDOW_LAST 
        && e.id >= WindowEvent.WINDOW_FIRST
        && (windowListener != null
	    || windowFocusListener != null
	    || windowStateListener != null
	    || (eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0))
      processEvent(e);
    else if (e.id == ComponentEvent.COMPONENT_RESIZED)
      validate ();
    else
      super.dispatchEventImpl(e);
  }

  /**
   * Processes the specified event for this window.  If the event is an
   * instance of <code>WindowEvent</code>, then
   * <code>processWindowEvent()</code> is called to process the event,
   * otherwise the superclass version of this method is invoked.
   *
   * @param evt The event to process.
   */
  protected void processEvent(AWTEvent evt)
  {
    if (evt instanceof WindowEvent)
      processWindowEvent((WindowEvent) evt);
    else
      super.processEvent(evt);
  }

  /**
   * Dispatches this event to any listeners that are listening for
   * <code>WindowEvents</code> on this window.  This method only gets
   * invoked if it is enabled via <code>enableEvents()</code> or if
   * a listener has been added.
   *
   * @param evt The event to process.
   */
  protected void processWindowEvent(WindowEvent evt)
  {
    int id = evt.getID();

    if (id == WindowEvent.WINDOW_GAINED_FOCUS
	|| id == WindowEvent.WINDOW_LOST_FOCUS)
      processWindowFocusEvent (evt);
    else if (id == WindowEvent.WINDOW_STATE_CHANGED)
      processWindowStateEvent (evt);
    else
      {
	if (windowListener != null)
	  {
	    switch (evt.getID())
	      {
	      case WindowEvent.WINDOW_ACTIVATED:
		windowListener.windowActivated(evt);
		break;

	      case WindowEvent.WINDOW_CLOSED:
		windowListener.windowClosed(evt);
		break;

	      case WindowEvent.WINDOW_CLOSING:
		windowListener.windowClosing(evt);
		break;

	      case WindowEvent.WINDOW_DEACTIVATED:
		windowListener.windowDeactivated(evt);
		break;

	      case WindowEvent.WINDOW_DEICONIFIED:
		windowListener.windowDeiconified(evt);
		break;

	      case WindowEvent.WINDOW_ICONIFIED:
		windowListener.windowIconified(evt);
		break;

	      case WindowEvent.WINDOW_OPENED:
		windowListener.windowOpened(evt);
		break;

	      default:
		break;
	      }
	  }
      }
  }
  
  /**
   * Identifies if this window is active.  The active window is a Frame or
   * Dialog that has focus or owns the active window.
   *  
   * @return true if active, else false.
   * @since 1.4
   */
  public boolean isActive()
  {
    KeyboardFocusManager manager = KeyboardFocusManager.getCurrentKeyboardFocusManager ();
    return manager.getActiveWindow() == this;
  }

  /**
   * Identifies if this window is focused.  A window is focused if it is the
   * focus owner or it contains the focus owner.
   * 
   * @return true if focused, else false.
   * @since 1.4
   */
  public boolean isFocused()
  {
    KeyboardFocusManager manager = KeyboardFocusManager.getCurrentKeyboardFocusManager ();
    return manager.getFocusedWindow() == this;
  }
  
  /**
   * Returns the child window that has focus if this window is active.
   * This method returns <code>null</code> if this window is not active
   * or no children have focus.
   *
   * @return The component that has focus, or <code>null</code> if no
   * component has focus.
   */
  public Component getFocusOwner ()
  {
    KeyboardFocusManager manager = KeyboardFocusManager.getCurrentKeyboardFocusManager ();

    Window activeWindow = manager.getActiveWindow ();

    // The currently-focused Component belongs to the active Window.
    if (activeWindow == this)
      return manager.getFocusOwner ();
    else
      return null;
  }

  /**
   * Returns the child component of this window that would receive
   * focus if this window were to become focused.  If the window
   * already has the top-level focus, then this method returns the
   * same component as getFocusOwner.  If no child component has
   * requested focus within the window, then the initial focus owner
   * is returned.  If this is a non-focusable window, this method
   * returns null.
   *
   * @return the child component of this window that most recently had
   * the focus, or <code>null</code>
   * @since 1.4
   */
  public Component getMostRecentFocusOwner ()
  {
    return windowFocusOwner;
  }

  /**
   * Set the focus owner for this window.  This method is used to
   * remember which component was focused when this window lost
   * top-level focus, so that when it regains top-level focus the same
   * child component can be refocused.
   *
   * @param windowFocusOwner the component in this window that owns
   * the focus.
   */
  void setFocusOwner (Component windowFocusOwner)