/*******************************************************************************
* Copyright (c) 2005, 2014 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
* Jeanderson Candido <http://jeandersonbc.github.io> - Bug 444070
*******************************************************************************/
package org.eclipse.jface.tests.performance;
import org.eclipse.core.runtime.Assert;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerSorter;
/**
* The RefreshTestContentProvider is the content
* provider for refresh tests.
*
*/
public class RefreshTestContentProvider implements IStructuredContentProvider {
static int seed = 1;
static TestElement[] allElements;
public static int ELEMENT_COUNT = 10000;
TestElement[] currentElements;
static{
allElements = new TestElement[ELEMENT_COUNT];
for (int i = 0; i < ELEMENT_COUNT; i++) {
allElements[i] = new TestElement(i);
}
}
void preSortElements(Viewer viewer, ViewerSorter sorter){
sorter.sort(viewer,currentElements);
}
public RefreshTestContentProvider(int size){
Assert.isTrue(size <= ELEMENT_COUNT);
setSize(size);
}
/**
* Set the size of the amount we are currently displaying
* to size.
* @param size
*/
public void setSize(int size) {
currentElements = new TestElement[size];
for (int i = 0; i < currentElements.length; i++) {
currentElements[i] = allElements[i];
}
}
@Override
public Object[] getElements(Object inputElement) {
return currentElements;
}
@Override
public void dispose() {
currentElements = null;
}
@Override
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
//Do nothing here
}
/**
* Restore the elements to thier old poorly sorted
* state.
*
*/
public void refreshElements() {
for (int i = 0; i < ELEMENT_COUNT; i++) {
currentElements[i] = new TestElement(i + seed);
}
seed += 257;
}
public void cloneElements(){
currentElements = currentElements.clone();
}
}