/*******************************************************************************
* Copyright (c) 2000, 2007 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.wst.jsdt.internal.ui.search;
import java.util.HashSet;
import java.util.Set;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.swt.widgets.Table;
public class JavaSearchTableContentProvider extends JavaSearchContentProvider implements IStructuredContentProvider {
public JavaSearchTableContentProvider(JavaSearchResultPage page) {
super(page);
}
public Object[] getElements(Object inputElement) {
if (inputElement instanceof JavaSearchResult) {
Set filteredElements= new HashSet();
Object[] rawElements= ((JavaSearchResult)inputElement).getElements();
int limit= getPage().getElementLimit().intValue();
for (int i= 0; i < rawElements.length; i++) {
if (getPage().getDisplayedMatchCount(rawElements[i]) > 0) {
filteredElements.add(rawElements[i]);
if (limit != -1 && limit < filteredElements.size()) {
break;
}
}
}
return filteredElements.toArray();
}
return EMPTY_ARR;
}
public void elementsChanged(Object[] updatedElements) {
if (getSearchResult() == null)
return;
int addCount= 0;
int removeCount= 0;
int addLimit= getAddLimit();
TableViewer viewer= (TableViewer) getPage().getViewer();
Set updated= new HashSet();
Set added= new HashSet();
Set removed= new HashSet();
for (int i= 0; i < updatedElements.length; i++) {
if (getPage().getDisplayedMatchCount(updatedElements[i]) > 0) {
if (viewer.testFindItem(updatedElements[i]) != null)
updated.add(updatedElements[i]);
else {
if (addLimit > 0) {
added.add(updatedElements[i]);
addLimit--;
addCount++;
}
}
} else {
removed.add(updatedElements[i]);
removeCount++;
}
}
viewer.add(added.toArray());
viewer.update(updated.toArray(), new String[] { SearchLabelProvider.PROPERTY_MATCH_COUNT });
viewer.remove(removed.toArray());
}
private int getAddLimit() {
int limit= getPage().getElementLimit().intValue();
if (limit != -1) {
Table table= (Table) getPage().getViewer().getControl();
int itemCount= table.getItemCount();
if (itemCount >= limit) {
return 0;
}
return limit - itemCount;
}
return Integer.MAX_VALUE;
}
public void clear() {
getPage().getViewer().refresh();
}
}