com.codename1.ui.RunnableWrapper Maven / Gradle / Ivy
/*
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. 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. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores
* CA 94065 USA or visit www.oracle.com if you need additional information or
* have any questions.
*/
package com.codename1.ui;
import java.util.ArrayList;
import java.util.Vector;
/**
* Class used by callSeriallyAndWait and invokeAndBlock and form to save code size
*
* @author Shai Almog
*/
class RunnableWrapper implements Runnable {
private static final Object THREADPOOL_LOCK = new Object();
private static ArrayList threadPool = new ArrayList();
private static int threadCount = 0;
private static int maxThreadCount = 5;
private static int availableThreads = 0;
private boolean done = false;
private Runnable internal;
private int type;
private RuntimeException err;
private Form parentForm;
private Painter paint;
private boolean reverse;
public RunnableWrapper(Form parentForm, Painter paint, boolean reverse) {
this.parentForm = parentForm;
this.paint = paint;
this.reverse = reverse;
}
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, reverse);
return;
}
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(10);
} catch (InterruptedException ex) {
ex.printStackTrace();
}
}
}
break;
case 3:
Display.getInstance().mainEDTLoop();
break;
case 4:
while(!Display.getInstance().codenameOneExited) {
Runnable r = null;
synchronized(THREADPOOL_LOCK) {
if(threadPool.size() > 0) {
r = threadPool.get(0);
threadPool.remove(0);
} else {
try {
availableThreads++;
THREADPOOL_LOCK.wait();
availableThreads--;
} catch (InterruptedException ex) {
ex.printStackTrace();
}
}
}
if(r != null) {
r.run();
}
}
}
}
done = true;
}
static void pushToThreadPool(Runnable r) {
if(availableThreads == 0 && threadCount < maxThreadCount) {
threadCount++;
Thread poolThread = Display.getInstance().startThread(new RunnableWrapper(null, 4), "invokeAndBlock" + threadCount);
poolThread.start();
}
synchronized(THREADPOOL_LOCK) {
threadPool.add(r);
THREADPOOL_LOCK.notify();
}
}
}