| /******************************************************************************* |
| * Copyright (c) 2004, 2005 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.ui.examples.jobs.views; |
| |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.jobs.ISchedulingRule; |
| import org.eclipse.jface.resource.ImageDescriptor; |
| import org.eclipse.ui.progress.IDeferredWorkbenchAdapter; |
| import org.eclipse.ui.progress.IElementCollector; |
| |
| public class SlowElementAdapter implements IDeferredWorkbenchAdapter { |
| |
| private static boolean serializeFetching = false; |
| private static boolean batchFetchedChildren = false; |
| |
| final ISchedulingRule mutexRule = new ISchedulingRule() { |
| public boolean isConflicting(ISchedulingRule rule) { |
| return rule == mutexRule; |
| } |
| public boolean contains(ISchedulingRule rule) { |
| return rule == mutexRule; |
| } |
| }; |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.progress.IDeferredWorkbenchAdapter#fetchDeferredChildren(java.lang.Object, |
| * org.eclipse.jface.progress.IElementCollector, |
| * org.eclipse.core.runtime.IProgressMonitor) |
| */ |
| public void fetchDeferredChildren(Object object, IElementCollector collector, IProgressMonitor monitor) { |
| if (object instanceof SlowElement) { |
| Object[] children = ((SlowElement) object).getChildren(); |
| if (isBatchFetchedChildren()) { |
| sleep(4000); |
| collector.add(children, monitor); |
| } else { |
| for (int i = 0; i < children.length; i++) { |
| if (monitor.isCanceled()) { |
| return; |
| } |
| collector.add(children[i], monitor); |
| sleep(4000); |
| } |
| } |
| } |
| } |
| |
| private void sleep(long mills) { |
| try { |
| Thread.sleep(1000); |
| } catch (InterruptedException e) { |
| //ignore |
| } |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.progress.IDeferredWorkbenchAdapter#isContainer() |
| */ |
| public boolean isContainer() { |
| return true; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.progress.IDeferredWorkbenchAdapter#getRule(java.lang.Object) |
| */ |
| public ISchedulingRule getRule(final Object object) { |
| if (isSerializeFetching()) |
| return mutexRule; |
| // Allow several SlowElement parents to fetch children concurrently |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.model.IWorkbenchAdapter#getChildren(java.lang.Object) |
| */ |
| public Object[] getChildren(Object object) { |
| if (object instanceof SlowElement) { |
| return ((SlowElement) object).getChildren(); |
| } |
| return new Object[0]; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.model.IWorkbenchAdapter#getImageDescriptor(java.lang.Object) |
| */ |
| public ImageDescriptor getImageDescriptor(Object object) { |
| // TODO Auto-generated method stub |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.model.IWorkbenchAdapter#getLabel(java.lang.Object) |
| */ |
| public String getLabel(Object o) { |
| if (o instanceof SlowElement) { |
| return ((SlowElement) o).getName(); |
| } |
| return "unknown"; //$NON-NLS-1$ |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.model.IWorkbenchAdapter#getParent(java.lang.Object) |
| */ |
| public Object getParent(Object o) { |
| if (o instanceof SlowElement) { |
| return ((SlowElement) o).getParent(); |
| } |
| return null; |
| } |
| |
| /** |
| * @return Returns the batchFetchedChildren. |
| */ |
| public static boolean isBatchFetchedChildren() { |
| return batchFetchedChildren; |
| } |
| |
| /** |
| * @param batchFetchedChildren |
| * The batchFetchedChildren to set. |
| */ |
| public static void setBatchFetchedChildren(boolean batchFetchedChildren) { |
| SlowElementAdapter.batchFetchedChildren = batchFetchedChildren; |
| } |
| |
| /** |
| * @return Returns the serializeFetching. |
| */ |
| public static boolean isSerializeFetching() { |
| return serializeFetching; |
| } |
| |
| /** |
| * @param serializeFetching |
| * The serializeFetching to set. |
| */ |
| public static void setSerializeFetching(boolean serializeFetching) { |
| SlowElementAdapter.serializeFetching = serializeFetching; |
| } |
| |
| } |