org.eclipse.dltk.mod.internal.ui.search.DLTKSearchTableContentProvider.java Source code

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Here is the source code for org.eclipse.dltk.mod.internal.ui.search.DLTKSearchTableContentProvider.java

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/*******************************************************************************
 * 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
 *
     
 *******************************************************************************/
package org.eclipse.dltk.mod.internal.ui.search;

import java.util.HashSet;
import java.util.Set;

import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.TableViewer;

public class DLTKSearchTableContentProvider extends DLTKSearchContentProvider
        implements IStructuredContentProvider {
    public DLTKSearchTableContentProvider(DLTKSearchResultPage page) {
        super(page);
    }

    public Object[] getElements(Object inputElement) {
        if (inputElement instanceof DLTKSearchResult) {
            Set filteredElements = new HashSet();
            Object[] rawElements = ((DLTKSearchResult) inputElement).getElements();
            for (int i = 0; i < rawElements.length; i++) {
                if (getPage().getDisplayedMatchCount(rawElements[i]) > 0)
                    filteredElements.add(rawElements[i]);
            }
            return filteredElements.toArray();
        }
        return EMPTY_ARR;
    }

    public void elementsChanged(Object[] updatedElements) {
        if (fResult == null)
            return;
        int addCount = 0;
        int removeCount = 0;
        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
                    added.add(updatedElements[i]);
                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());
    }

    public void filtersChanged(MatchFilter[] filters) {
        super.filtersChanged(filters);
        getPage().getViewer().refresh();
    }

    public void clear() {
        getPage().getViewer().refresh();
    }

}