| /* |
| * Copyright (c) 2008 Borland Software Corporation |
| * |
| * 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: |
| * Artem Tikhomirov (Borland) - initial API and implementation |
| */ |
| package org.eclipse.gmf.internal.xpand.ant; |
| |
| import org.apache.tools.ant.Task; |
| import org.eclipse.ant.core.AntCorePlugin; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.NullProgressMonitor; |
| import org.eclipse.core.runtime.ProgressMonitorWrapper; |
| import org.eclipse.core.runtime.SubProgressMonitor; |
| |
| // XXX think over if just static method is sufficient |
| class ProgressSupport extends ProgressMonitorWrapper { |
| private final Task myTask; |
| private IProgressMonitor mySubProgress; |
| private IProgressMonitor myOriginalMonitor; |
| |
| public ProgressSupport(Task task) { |
| super(extractProgress(task)); |
| assert task != null; |
| myTask = task; |
| } |
| |
| public void pushSubProgress(int ticks) { |
| assert mySubProgress == null; |
| if (myTask.getProject() == null) { |
| return; |
| } |
| myOriginalMonitor = (IProgressMonitor) myTask.getProject().getReference(AntCorePlugin.ECLIPSE_PROGRESS_MONITOR); |
| if (myOriginalMonitor == null) { |
| return; |
| } |
| mySubProgress = new SubProgressMonitor(this, ticks); |
| myTask.getProject().addReference(AntCorePlugin.ECLIPSE_PROGRESS_MONITOR, mySubProgress); |
| |
| } |
| |
| public void popSubProgress() { |
| if (myTask.getProject() == null) { |
| return; |
| } |
| assert mySubProgress != null; |
| IProgressMonitor pm = (IProgressMonitor) myTask.getProject().getReference(AntCorePlugin.ECLIPSE_PROGRESS_MONITOR); |
| assert pm == mySubProgress; |
| mySubProgress.done(); |
| mySubProgress = null; |
| myTask.getProject().addReference(AntCorePlugin.ECLIPSE_PROGRESS_MONITOR, myOriginalMonitor); |
| } |
| |
| private static IProgressMonitor extractProgress(Task task) { |
| IProgressMonitor monitor = task.getProject() == null ? null : (IProgressMonitor) task.getProject().getReference(AntCorePlugin.ECLIPSE_PROGRESS_MONITOR); |
| //the monitor, if passed, is already initialized with beginTask() with an incorrect amount of work. |
| return monitor == null ? new NullProgressMonitor() : new SubProgressMonitor(monitor, 1); |
| } |
| } |