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/*******************************************************************************
* Copyright (c) 2009 STMicroelectronics.
* 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:
* Xavier Raynaud <xavier.raynaud@st.com> - initial API and implementation
*******************************************************************************/
package org.eclipse.linuxtools.gprof.view;
import java.util.LinkedList;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.linuxtools.gprof.parser.GmonDecoder;
import org.eclipse.linuxtools.gprof.view.histogram.CGCategory;
import org.eclipse.linuxtools.gprof.view.histogram.HistFunction;
import org.eclipse.linuxtools.gprof.view.histogram.HistRoot;
import org.eclipse.linuxtools.gprof.view.histogram.TreeElement;
/**
* Tree content provider on charge of displaying call graph
*
* HistRoot => HistFunction => CGCategory (parent/children) => CGArc
*
* @author Xavier Raynaud <xavier.raynaud@st.com>
*/
public class CallGraphContentProvider implements ITreeContentProvider {
public static final CallGraphContentProvider sharedInstance = new CallGraphContentProvider();
/**
* Constructor
*/
private CallGraphContentProvider() {
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
*/
public Object[] getChildren(Object parentElement) {
if (parentElement instanceof HistRoot) {
HistRoot root = (HistRoot) parentElement;
LinkedList<? extends TreeElement> ret = getFunctionChildrenList(root);
return ret.toArray();
}
if (parentElement instanceof HistFunction) {
HistFunction function = (HistFunction) parentElement;
CGCategory parents = function.getParentsFunctions();
CGCategory children = function.getChildrenFunctions();
if (parents == null) {
if (children == null) return new Object[0];
return new Object[] {children};
} else if (children == null) {
return new Object[] {parents};
} else {
return new Object[] {
parents,
children
};
}
}
if (parentElement instanceof CGCategory) {
CGCategory cat = (CGCategory) parentElement;
return cat.getChildren().toArray();
}
return null;
}
protected LinkedList<? extends TreeElement> getFunctionChildrenList(HistRoot root) {
LinkedList<TreeElement> ret = new LinkedList<TreeElement>();
LinkedList<? extends TreeElement> list = root.getChildren();
for (TreeElement histTreeElem : list) {
LinkedList<? extends TreeElement> partialList = histTreeElem.getChildren();
ret.addAll(partialList);
}
return ret;
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
*/
public Object getParent(Object element) {
TreeElement cge = (TreeElement) element;
if (cge instanceof HistFunction) {
return cge.getParent().getParent();
}
return cge.getParent();
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
*/
public boolean hasChildren(Object element) {
TreeElement cge = (TreeElement) element;
return cge.hasChildren();
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
*/
public Object[] getElements(Object inputElement) {
if (inputElement == null) return new Object[0];
GmonDecoder obj = (GmonDecoder) inputElement;
HistRoot root = obj.getRootNode();
return new Object[] { root };
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.IContentProvider#dispose()
*/
public void dispose() {
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
*/
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
}
}
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