org.eclipse.imp.lpg.search.LPGSearchTableContentProvider.java Source code

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Here is the source code for org.eclipse.imp.lpg.search.LPGSearchTableContentProvider.java

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/*******************************************************************************
* Copyright (c) 2007 IBM Corporation.
* 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:
*    Robert Fuhrer (rfuhrer@watson.ibm.com) - initial API and implementation
    
*******************************************************************************/

package org.eclipse.imp.lpg.search;

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

import org.eclipse.jface.viewers.TableViewer;

public class LPGSearchTableContentProvider extends LPGSearchContentProvider {
    public LPGSearchTableContentProvider(LPGSearchResultPage page) {
        super(page);
    }

    public Object[] getElements(Object inputElement) {
        if (inputElement instanceof LPGSearchResult) {
            Set filteredElements = new HashSet();
            Object[] rawElements = ((LPGSearchResult) 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(), null /*new String[] { SearchLabelProvider.PROPERTY_MATCH_COUNT } */);
        viewer.remove(removed.toArray());
    }

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