| /******************************************************************************* |
| * Copyright (c) 2004 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jst.ws.internal.consumption.ui.widgets.object; |
| |
| import java.util.Calendar; |
| import org.eclipse.swt.widgets.Display; |
| |
| public class Timer extends Thread |
| { |
| private static Timer instance = null; |
| private final long ONE_SECOND = 1000; |
| private long refreshTime; |
| private Display display; |
| private Runnable runnable; |
| |
| private Timer(Display display, Runnable runnable) |
| { |
| this.display = display; |
| this.runnable = runnable; |
| } |
| |
| public synchronized static Timer newInstance(Display display, Runnable runnable) |
| { |
| if (instance == null) |
| instance = new Timer(display, runnable); |
| return instance; |
| } |
| |
| public synchronized static boolean isRunning() |
| { |
| return instance != null; |
| } |
| |
| public synchronized void startTimer() |
| { |
| refreshTime = getCurrentTime() + ONE_SECOND; |
| if (!isAlive()) |
| this.start(); |
| } |
| |
| private long getCurrentTime() |
| { |
| return Calendar.getInstance().getTime().getTime(); |
| } |
| |
| public void run() |
| { |
| long currTime = getCurrentTime(); |
| while (currTime < refreshTime) |
| { |
| try |
| { |
| sleep(refreshTime - currTime); |
| } |
| catch (InterruptedException ie) |
| { |
| } |
| currTime = getCurrentTime(); |
| } |
| instance = null; |
| display.syncExec(runnable); |
| } |
| } |