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/*******************************************************************************
* 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.wst.ws.internal.explorer;
import org.eclipse.swt.SWTException;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.PlatformUI;
public class LaunchWizardTask {
// singleton
private static LaunchWizardTask task_;
// the shell for the wizard to be launched
private Shell shell_;
// the LaunchWizardRunnable that is currently running
private LaunchWizardRunnable runnable_;
private LaunchWizardTask(Shell shell) {
shell_ = shell;
runnable_ = null;
}
public static LaunchWizardTask getInstance() {
if (task_ == null)
task_ = new LaunchWizardTask(PlatformUI.getWorkbench()
.getActiveWorkbenchWindow().getShell());
return task_;
}
public void asyncExec(Runnable runnable) throws SWTException {
shell_.getDisplay().asyncExec(runnable);
}
public boolean checkAndAsyncExec(LaunchWizardRunnable runnable) {
try {
if (!getIsExecuting()) {
asyncExec(runnable);
runnable_ = runnable;
return true;
} else
return false;
} catch (Exception e) {
return false;
}
}
public boolean getIsExecuting() {
if (runnable_ != null) {
boolean isFinish = runnable_.isFinish();
if (isFinish)
runnable_ = null;
return !isFinish;
} else
return false;
}
}
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