raplaframe.java

来自「Rapla是一个灵活的多用户资源管理系统。它提供的一些功能有：日历GUI」· Java 代码 · 共 125 行

/*--------------------------------------------------------------------------*
 | Copyright (C) 2006 Christopher Kohlhaas                                  |
 |                                                                          |
 | This program is free software; you can redistribute it and/or modify     |
 | it under the terms of the GNU General Public License as published by the |
 | Free Software Foundation. A copy of the license has been included with   |
 | these distribution in the COPYING file, if not go to www.fsf.org         |
 |                                                                          |
 | As a special exception, you are granted the permissions to link this     |
 | program with every library, which license fulfills the Open Source       |
 | Definition as published by the Open Source Initiative (OSI).             |
 *--------------------------------------------------------------------------*/
package org.rapla.gui.toolkit;

import java.awt.AWTEvent;
import java.awt.event.WindowEvent;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyVetoException;
import java.beans.VetoableChangeListener;
import java.util.ArrayList;

import javax.swing.JFrame;

import org.rapla.framework.RaplaContext;
import org.rapla.framework.RaplaException;

public class RaplaFrame extends JFrame
    implements
        FrameController
{
    private static final long serialVersionUID = 1L;
    
    FrameControllerList frameList = null;
    ArrayList listenerList = new ArrayList();
    /**
       This frame registers itself on the FrameControllerList on <code>contextualzize</code>
       and unregisters upon <code>dispose()</code>.
       Use addVetoableChangeListener() to get notified on a window-close event (and throw
       a veto if necessary.
     * @throws RaplaException
    */
    public RaplaFrame(RaplaContext sm) throws RaplaException {
        enableEvents(AWTEvent.WINDOW_EVENT_MASK);
        /*
        AWTAdapterFactory fact =
            AWTAdapterFactory.getFactory();
        if (fact != null) {
            fact.createFocusAdapter( this ).ignoreFocusComponents(new FocusTester() {
                    public boolean accept(Component component) {
                        return !(component instanceof HTMLView) ;
                    }
                });
        }*/
        frameList = (FrameControllerList) sm.lookup(FrameControllerList.ROLE);
        frameList.add(this);
    }

    protected void processWindowEvent(WindowEvent e) {
        if (e.getID() == WindowEvent.WINDOW_CLOSING) {
            try {
                fireFrameClosing();
                close();
            } catch (PropertyVetoException ex) {
                return;
            }
        }
        super.processWindowEvent(e);
    }

    public void addVetoableChangeListener(VetoableChangeListener listener) {
        listenerList.add(listener);
    }

    public void removeVetoableChangeListener(VetoableChangeListener listener) {
        listenerList.remove(listener);
    }

    public VetoableChangeListener[] getVetoableChangeListeners() {
        return (VetoableChangeListener[])listenerList.toArray(new VetoableChangeListener[]{});
    }



    void fireFrameClosing() throws PropertyVetoException {
        if (listenerList.size() == 0)
            return;
        // The propterychange event indicates that the window
        // is closing.
        PropertyChangeEvent evt = new PropertyChangeEvent(
                                                          this
                                                          ,"visible"
                                                          ,new Boolean(true)
                                                          ,new Boolean(false)
                                                          )
            ;
        VetoableChangeListener[] listeners = getVetoableChangeListeners();
        for (int i = 0;i<listeners.length; i++) {
            listeners[i].vetoableChange(evt);
        }
    }

    final public void place(boolean placeRelativeToMain,boolean packFrame) {
        //Validate frames that have preset sizes
        //Pack frames that have useful preferred size info, e.g. from their layout
        if (packFrame) {
            this.pack();
        } else {
            this.validate();
        }
        if (placeRelativeToMain)
            frameList.placeRelativeToMain(this);
    }

    public void dispose() {
        super.dispose();
        frameList.remove(this);
    }

    public void close() {

        dispose();
    }

}