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/*******************************************************************************
* Copyright (c) 2006, 2007 QNX Software Systems 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:
* QNX - Initial API and implementation
* Markus Schorn (Wind River Systems)
*******************************************************************************/
package org.eclipse.cdt.internal.ui.search;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.PlatformUI;
import org.eclipse.cdt.core.index.IIndexFileLocation;
import org.eclipse.cdt.core.index.IndexLocationFactory;
import org.eclipse.cdt.core.model.CoreModel;
import org.eclipse.cdt.core.model.ICElement;
import org.eclipse.cdt.core.model.ICProject;
import org.eclipse.cdt.core.model.ISourceRoot;
/**
* @author Doug Schaefer
*
*/
public class PDOMSearchTreeContentProvider implements ITreeContentProvider, IPDOMSearchContentProvider {
private TreeViewer viewer;
private PDOMSearchResult result;
private Map tree = new HashMap();
public Object[] getChildren(Object parentElement) {
Set children = (Set)tree.get(parentElement);
if (children == null)
return new Object[0];
return children.toArray();
}
public Object getParent(Object element) {
Iterator p = tree.keySet().iterator();
while (p.hasNext()) {
Object parent = p.next();
Set children = (Set)tree.get(parent);
if (children.contains(element))
return parent;
}
return null;
}
public boolean hasChildren(Object element) {
return tree.get(element) != null;
}
public Object[] getElements(Object inputElement) {
return getChildren(result);
}
public void dispose() {
}
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
this.viewer = (TreeViewer)viewer;
result = (PDOMSearchResult)newInput;
tree.clear();
if (result != null) {
Object[] elements = result.getElements();
for (int i = 0; i < elements.length; ++i) {
insertSearchElement((PDOMSearchElement)elements[i]);
}
}
}
private void insertChild(Object parent, Object child) {
Set children = (Set)tree.get(parent);
if (children == null) {
children = new HashSet();
tree.put(parent, children);
}
children.add(child);
}
private void insertSearchElement(PDOMSearchElement element) {
IIndexFileLocation location= element.getLocation();
IFile[] files;
if(location.getFullPath()!=null) {
files= new IFile[] {ResourcesPlugin.getWorkspace().getRoot().getFile(new Path(location.getFullPath()))};
} else {
IPath path= IndexLocationFactory.getAbsolutePath(element.getLocation());
files= ResourcesPlugin.getWorkspace().getRoot().findFilesForLocation(path);
}
boolean handled= false;
if (files.length > 0) {
for (int j = 0; j < files.length; ++j) {
ICElement celement = CoreModel.getDefault().create(files[j]);
if (celement != null) {
insertChild(celement, element);
insertCElement(celement);
handled= true;
}
}
}
if (!handled) {
insertChild(element.getLocation(), element);
insertChild(result, element.getLocation());
}
}
private void insertCElement(ICElement element) {
if (element instanceof ICProject)
insertChild(result, element);
else {
ICElement parent = element.getParent();
if (parent instanceof ISourceRoot && parent.getUnderlyingResource() instanceof IProject)
// Skip source roots that are projects
parent = parent.getParent();
insertChild(parent, element);
insertCElement(parent);
}
}
public void elementsChanged(Object[] elements) {
if (elements != null) {
for (int i = 0; i < elements.length; ++i) {
PDOMSearchElement element = (PDOMSearchElement)elements[i];
if (result.getMatchCount(element) > 0)
insertSearchElement(element);
else
remove(element);
}
}
Display d= PlatformUI.getWorkbench().getDisplay();
d.asyncExec(new Runnable() {
public void run() {
if (!viewer.getTree().isDisposed()) {
viewer.refresh();
}
}
});
}
public void clear() {
tree.clear();
Display.getDefault().asyncExec(new Runnable() {
public void run() {
viewer.refresh();
}
});
}
protected void remove(Object element) {
Object parent = getParent(element);
if (parent == null)
// reached the search result
return;
Set siblings = (Set)tree.get(parent);
siblings.remove(element);
if (siblings.isEmpty()) {
// remove the parent
remove(parent);
tree.remove(parent);
}
}
}
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