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/*******************************************************************************
* Copyright (c) 2005, 2006 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
*******************************************************************************/
package org.eclipse.jface.tests.viewers;
import junit.framework.Assert;
import org.eclipse.jface.viewers.ILazyTreeContentProvider;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.viewers.Viewer;
public class TestModelLazyTreeContentProvider extends TestModelContentProvider
implements ILazyTreeContentProvider<TestElement,TestElement> {
private final TreeViewer<TestElement,TestElement> treeViewer;
public TestModelLazyTreeContentProvider(TreeViewer<TestElement,TestElement> treeViewer) {
this.treeViewer = treeViewer;
}
public void updateElement(TestElement parent, int index) {
TestElement parentElement = parent;
if(parentElement.getChildCount() > index) {
TestElement childElement = parentElement.getChildAt(index);
treeViewer.replace(parent, index, childElement);
treeViewer.setChildCount(childElement, childElement.getChildCount());
}
}
public TestElement[] getChildren(TestElement element) {
Assert.fail("should not be called on a LazyTreeContentProvider");
return null;
}
public TestElement[] getElements(TestElement element) {
Assert.fail("should not be called on a LazyTreeContentProvider");
return null;
}
public boolean hasChildren(TestElement element) {
Assert.fail("should not be called on a LazyTreeContentProvider");
return false;
}
public void inputChanged(Viewer<TestElement> viewer, TestElement oldInput,
final TestElement newInput) {
super.inputChanged(viewer, oldInput, newInput);
}
public void updateChildCount(TestElement element, int currentChildCount) {
treeViewer.setChildCount(element, element.getChildCount());
}
}
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