/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.ddmuilib.heap;
import com.android.ddmlib.NativeAllocationInfo;
import org.eclipse.jface.viewers.ILazyTreeContentProvider;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.viewers.Viewer;
import java.util.List;
/**
* Content Provider for the native heap tree viewer in {@link NativeHeapPanel}.
* It expects a {@link NativeHeapSnapshot} as input, and provides the list of allocations
* in the heap dump as content to the UI.
*/
public final class NativeHeapProviderByAllocations implements ILazyTreeContentProvider {
private TreeViewer mViewer;
private boolean mDisplayZygoteMemory;
private NativeHeapSnapshot mNativeHeapDump;
public NativeHeapProviderByAllocations(TreeViewer viewer, boolean displayZygotes) {
mViewer = viewer;
mDisplayZygoteMemory = displayZygotes;
}
@Override
public void dispose() {
}
@Override
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
mNativeHeapDump = (NativeHeapSnapshot) newInput;
}
@Override
public Object getParent(Object arg0) {
return null;
}
@Override
public void updateChildCount(Object element, int currentChildCount) {
int childCount = 0;
if (element == mNativeHeapDump) { // root element
childCount = getAllocations().size();
}
mViewer.setChildCount(element, childCount);
}
@Override
public void updateElement(Object parent, int index) {
Object item = null;
if (parent == mNativeHeapDump) { // root element
item = getAllocations().get(index);
}
mViewer.replace(parent, index, item);
mViewer.setChildCount(item, 0);
}
public void displayZygoteMemory(boolean en) {
mDisplayZygoteMemory = en;
}
private List<NativeAllocationInfo> getAllocations() {
if (mDisplayZygoteMemory) {
return mNativeHeapDump.getAllocations();
} else {
return mNativeHeapDump.getNonZygoteAllocations();
}
}
}