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/*******************************************************************************
* Copyright (c) 2011 Wind River Systems, Inc. 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tcf.te.tcf.processes.ui.controls;
import org.eclipse.core.runtime.Assert;
import org.eclipse.jface.viewers.ITreeViewerListener;
import org.eclipse.jface.viewers.TreeExpansionEvent;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.widgets.Display;
import org.eclipse.tcf.te.tcf.filesystem.core.model.ITreeNodeModel;
import org.eclipse.tcf.te.tcf.filesystem.ui.controls.NavigatorContentProvider;
import org.eclipse.tcf.te.tcf.locator.interfaces.nodes.IPeerModel;
import org.eclipse.tcf.te.tcf.processes.core.model.ProcessModel;
import org.eclipse.tcf.te.tcf.processes.core.model.ProcessTreeNode;
import org.eclipse.ui.IMemento;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.internal.navigator.NavigatorFilterService;
import org.eclipse.ui.navigator.ICommonContentExtensionSite;
import org.eclipse.ui.navigator.ICommonContentProvider;
import org.eclipse.ui.navigator.INavigatorContentService;
import org.eclipse.ui.navigator.INavigatorFilterService;
/**
* Processes content provider for the common navigator of Target Explorer.
*/
@SuppressWarnings("restriction")
public class ProcessNavigatorContentProvider extends NavigatorContentProvider implements ICommonContentProvider, ITreeViewerListener {
// The "Single Thread" filter id
private final static String SINGLE_THREAD_FILTER_ID = "org.eclipse.tcf.te.tcf.processes.ui.navigator.filter.singleThread"; //$NON-NLS-1$
/*
* (non-Javadoc)
* @see org.eclipse.tcf.te.ui.trees.TreeContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
*/
@Override
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
super.inputChanged(viewer, oldInput, newInput);
this.viewer.addTreeListener(this);
refreshChildren(newInput);
}
/*
* (non-Javadoc)
* @see org.eclipse.tcf.te.ui.trees.TreeContentProvider#dispose()
*/
@Override
public void dispose() {
super.dispose();
this.viewer.removeTreeListener(this);
}
/*
* (non-Javadoc)
* @see org.eclipse.tcf.te.tcf.filesystem.ui.controls.NavigatorContentProvider#doGetModel(org.eclipse.tcf.te.tcf.locator.interfaces.nodes.IPeerModel)
*/
@Override
protected ITreeNodeModel doGetModel(IPeerModel peerNode) {
return ProcessModel.getProcessModel(peerNode);
}
/* (non-Javadoc)
* @see org.eclipse.ui.navigator.ICommonContentProvider#init(org.eclipse.ui.navigator.ICommonContentExtensionSite)
*/
@Override
public void init(ICommonContentExtensionSite config) {
Assert.isNotNull(config);
// Make sure that the hidden "Single Thread" filter is active
INavigatorContentService cs = config.getService();
INavigatorFilterService fs = cs != null ? cs.getFilterService() : null;
if (fs != null && !fs.isActive(SINGLE_THREAD_FILTER_ID)) {
if (fs instanceof NavigatorFilterService) {
final NavigatorFilterService navFilterService = (NavigatorFilterService)fs;
navFilterService.addActiveFilterIds(new String[] { SINGLE_THREAD_FILTER_ID });
Display display = PlatformUI.getWorkbench().getDisplay();
display.asyncExec(new Runnable(){
@Override
public void run() {
navFilterService.updateViewer();
}});
}
}
}
/* (non-Javadoc)
* @see org.eclipse.ui.navigator.IMementoAware#restoreState(org.eclipse.ui.IMemento)
*/
@Override
public void restoreState(IMemento aMemento) {
}
/* (non-Javadoc)
* @see org.eclipse.ui.navigator.IMementoAware#saveState(org.eclipse.ui.IMemento)
*/
@Override
public void saveState(IMemento aMemento) {
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeViewerListener#treeCollapsed(org.eclipse.jface.viewers.TreeExpansionEvent)
*/
@Override
public void treeCollapsed(TreeExpansionEvent event) {
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeViewerListener#treeExpanded(org.eclipse.jface.viewers.TreeExpansionEvent)
*/
@Override
public void treeExpanded(TreeExpansionEvent event) {
Object element = event.getElement();
refreshChildren(element);
}
/**
* Refresh the element's children if it is a process node and its children has
* already been queried.
*/
private void refreshChildren(Object object) {
if(object instanceof ProcessTreeNode) {
ProcessTreeNode parent = (ProcessTreeNode) object;
if (parent.childrenQueried && !parent.childrenQueryRunning) {
ProcessModel pModel = ProcessModel.getProcessModel(parent.peerNode);
pModel.refreshChildren(parent);
}
}
}
}
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