de.vonloesch.pdf4eclipse.outline.PDFFileOutline.java Source code

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Here is the source code for de.vonloesch.pdf4eclipse.outline.PDFFileOutline.java

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/*******************************************************************************
 * Copyright (c) 2011 Boris von Loesch.
 * 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:
 *     Boris von Loesch - initial API and implementation
 ******************************************************************************/
package de.vonloesch.pdf4eclipse.outline;

import java.util.Iterator;

import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.views.contentoutline.ContentOutlinePage;

import com.sun.pdfview.OutlineNode;
import com.sun.pdfview.PDFDestination;
import com.sun.pdfview.action.GoToAction;
import com.sun.pdfview.action.PDFAction;

import de.vonloesch.pdf4eclipse.editors.PDFEditor;

/**
 * A simple outline, which directly uses the outline of the pdf file.
 * 
 * @author Boris von Loesch
 *
 */
public class PDFFileOutline extends ContentOutlinePage {

    private OutlineNode input;
    private PDFEditor editor;

    public PDFFileOutline(PDFEditor editor) {
        super();
        this.editor = editor;
    }

    public void createControl(Composite parent) {
        super.createControl(parent);
        TreeViewer viewer = getTreeViewer();
        viewer.setContentProvider(new PDFFileContentProvider());
        viewer.setLabelProvider(new PDFFileLabelProvider());
        //viewer.addSelectionChangedListener(this);
        if (input != null)
            viewer.setInput(input);

        viewer.addSelectionChangedListener(new ISelectionChangedListener() {

            @Override
            public void selectionChanged(SelectionChangedEvent event) {
                // if the selection is empty do nothing
                if (event.getSelection().isEmpty()) {
                    return;
                }
                IStructuredSelection selection = (IStructuredSelection) event.getSelection();
                for (Iterator iterator = selection.iterator(); iterator.hasNext();) {
                    OutlineNode domain = (OutlineNode) iterator.next();

                    PDFAction action = domain.getAction();
                    if (action instanceof GoToAction) {
                        PDFDestination dest = ((GoToAction) action).getDestination();
                        if (dest == null)
                            return;
                        editor.gotoAction(dest);
                    }
                }
            }
        });
    }

    public void setInput(OutlineNode n) {
        input = n;
        TreeViewer viewer = getTreeViewer();
        if (viewer != null) {
            viewer.setInput(input);
        }
    }
}