SuppressionsReconcilingStrategy.java

/*******************************************************************************
 * Copyright (c) 2008, 2009 Phil Muldoon <pkmuldoon@picobot.org>.
 *
 * 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:
 *    Phil Muldoon <pkmuldoon@picobot.org> - initial API.
 *    Red Hat - modifications for use with Valgrind plugins.
 *******************************************************************************/
package org.eclipse.linuxtools.internal.valgrind.ui.editor;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.Position;
import org.eclipse.jface.text.reconciler.DirtyRegion;
import org.eclipse.jface.text.reconciler.IReconcilingStrategy;
import org.eclipse.jface.text.reconciler.IReconcilingStrategyExtension;
import org.eclipse.swt.widgets.Display;

public class SuppressionsReconcilingStrategy implements IReconcilingStrategy,
        IReconcilingStrategyExtension {
    private SuppressionsEditor editor;
    private IDocument document;
    private List<Position> positions;
    private IProgressMonitor monitor;

    public SuppressionsReconcilingStrategy(SuppressionsEditor editor) {
        this.editor = editor;
        positions = new ArrayList<>();
    }

    @Override
    public void reconcile(IRegion partition) {
        initialReconcile();
    }

    @Override
    public void reconcile(DirtyRegion dirtyRegion, IRegion subRegion) {
        initialReconcile();
    }

    @Override
    public void setDocument(IDocument document) {
        this.document = document;
    }

    @Override
    public void initialReconcile() {
        int start = -1;
        int end = document.getLength();
        int worked = 0;
        monitor.beginTask(Messages.getString("SuppressionsReconcilingStrategy.Monitor_title"), 10); //$NON-NLS-1$
        for (int pos = 0; pos < end; pos++) {
            try {
                char ch = document.getChar(pos);
                if (ch == '{') {
                    start = pos;
                } else if (ch == '}' && start > 0) {
                    positions.add(new Position(start, pos - start + 1));
                    start = -1; // reset
                }
            } catch (BadLocationException e) {
                e.printStackTrace();
            }

            if (pos * 10 / end > worked) {
                monitor.worked(1);
                worked++;
            }
        }
        monitor.done();

        Display.getDefault().syncExec(() -> editor.updateFoldingStructure(positions.toArray(new Position[positions.size()])));
    }

    @Override
    public void setProgressMonitor(IProgressMonitor monitor) {
        this.monitor = monitor;
    }

}