runnablewrapper.java.svn-base

j2me设计的界面包

/*
 * Copyright 2008 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */
package com.sun.lwuit;

import com.sun.lwuit.plaf.UIManager;

/**
 * Class used by callSeriallyAndWait and invokeAndBlock and form to save code size
 * 
 * @author Shai Almog
 */
class RunnableWrapper implements Runnable {
    private boolean done = false;
    private Runnable internal;
    private int type;
    private RuntimeException err;
    private Form parentForm;
    private Painter paint;

    public RunnableWrapper(Form parentForm, Painter paint) {
        this.parentForm = parentForm;
        this.paint = paint;
    }
    
    public RunnableWrapper(Runnable internal, int type) {
        this.internal = internal;
        this.type = type;
    }

    public RuntimeException getErr() {
        return err;
    }

    public void setDone(boolean done) {
        this.done = done;
    }
    
    public boolean isDone() {
        return done;
    }

    public void run() {
        if(parentForm != null) {
            // set current form uses this portion to make sure all set current operations
            // occur on the EDT
            if(paint == null) {
                Display.getInstance().setCurrent(parentForm);
                return;
            }
            
            // called to display a dialog and wait for modality
            parentForm.initFocused();
            if (parentForm.getTransitionOutAnimator() == null && parentForm.getTransitionInAnimator() == null) {
                parentForm.initLaf(UIManager.getInstance().getLookAndFeel());
            }
            parentForm.initComponentImpl();
            com.sun.lwuit.Display.getInstance().setCurrent(parentForm);
            parentForm.onShow();
            Dialog dlg = (Dialog)parentForm;
            while (!dlg.isDisposed()) {
                try {
                    synchronized(Display.lock) {
                        Display.lock.wait(40);
                    }
                } catch (InterruptedException ex) {
                }
            }
            parentForm.getStyle().setBgPainter(paint);
        } else {
            switch(type) {
                case 0: 
                    internal.run();
                    done = true;
                    synchronized(Display.lock) {
                        Display.lock.notify();
                    }
                    break;
                case 1:
                    try {
                        internal.run();
                    } catch(RuntimeException ex) {
                        this.err = ex;
                    }
                    break;
                case 2:
                    while(!done) {
                        synchronized(Display.lock) {
                            try {
                                Display.lock.wait(40);
                            } catch (InterruptedException ex) {
                                ex.printStackTrace();
                            }
                        }
                    }
                    break;
            }
        }
    }
}