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/*******************************************************************************
* Copyright (c) 2000, 2012 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
* Les Jones <lesojones@gmail.com> - bug 191365
*******************************************************************************/
package org.eclipse.pde.internal.ui.views.plugins;
import java.io.File;
import org.eclipse.core.resources.IStorage;
import org.eclipse.core.runtime.jobs.*;
import org.eclipse.jdt.core.*;
import org.eclipse.jdt.ui.StandardJavaElementContentProvider;
import org.eclipse.jface.viewers.*;
import org.eclipse.pde.core.plugin.IPluginModelBase;
import org.eclipse.pde.internal.core.*;
import org.eclipse.pde.internal.ui.elements.DefaultContentProvider;
import org.eclipse.ui.progress.DeferredTreeContentManager;
import org.eclipse.ui.progress.IDeferredWorkbenchAdapter;
public class PluginsContentProvider extends DefaultContentProvider implements ITreeContentProvider, IStructuredContentProvider {
private PluginsView fView;
private StandardJavaElementContentProvider fJavaProvider;
private DeferredTreeContentManager fManager = null;
/**
* Constructor for PluginsContentProvider.
*/
public PluginsContentProvider(PluginsView view) {
fView = view;
fJavaProvider = new StandardJavaElementContentProvider();
}
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
if (newInput == null) {
if (fManager != null)
fManager.cancel(oldInput);
return;
}
fManager = new DeferredTreeContentManager((AbstractTreeViewer) viewer);
fManager.addUpdateCompleteListener(getCompletionJobListener());
fView.updateTitle(newInput);
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
*/
public Object[] getChildren(Object parentElement) {
if (parentElement instanceof IDeferredWorkbenchAdapter) {
if (PDECore.getDefault().getModelManager().isInitialized())
return PDECore.getDefault().getModelManager().getAllModels();
Object[] children = fManager.getChildren(parentElement);
return children;
}
if (parentElement instanceof IPluginModelBase) {
IPluginModelBase model = (IPluginModelBase) parentElement;
File file = new File(model.getInstallLocation());
if (!file.isFile()) {
FileAdapter adapter = new ModelFileAdapter(model, file, PDECore.getDefault().getSearchablePluginsManager());
return adapter.getChildren();
}
}
if (parentElement instanceof FileAdapter) {
return ((FileAdapter) parentElement).getChildren();
}
if (parentElement instanceof IPackageFragmentRoot || parentElement instanceof IPackageFragment || parentElement instanceof ICompilationUnit || parentElement instanceof IStorage)
return fJavaProvider.getChildren(parentElement);
return new Object[0];
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
*/
public Object getParent(Object element) {
if (element instanceof PluginModelManager) {
return null;
}
if (element instanceof IPluginModelBase) {
return PDECore.getDefault().getModelManager();
}
if (element instanceof ModelFileAdapter) {
return ((ModelFileAdapter) element).getModel();
}
if (element instanceof FileAdapter) {
return ((FileAdapter) element).getParent();
}
if (element instanceof IJarEntryResource) {
return ((IJarEntryResource) element).getParent();
}
return null;
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
*/
public boolean hasChildren(Object element) {
if (element instanceof IDeferredWorkbenchAdapter)
return fManager.mayHaveChildren(element);
if (element instanceof IPluginModelBase) {
IPluginModelBase model = (IPluginModelBase) element;
return model.getUnderlyingResource() == null && !new File(model.getInstallLocation()).isFile();
}
if (element instanceof FileAdapter) {
FileAdapter fileAdapter = (FileAdapter) element;
return fileAdapter.hasChildren();
}
if (element instanceof IPackageFragmentRoot || element instanceof IPackageFragment || element instanceof ICompilationUnit || element instanceof IStorage)
return fJavaProvider.hasChildren(element);
return false;
}
/**
* @see IStructuredContentProvider#getElements(Object)
*/
public Object[] getElements(Object inputElement) {
return getChildren(inputElement);
}
protected IJobChangeListener getCompletionJobListener() {
return new JobChangeAdapter() {
public void done(IJobChangeEvent event) {
if (event.getResult().isOK())
fView.updateContentDescription();
}
};
}
}
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