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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common
 * Development and Distribution License("CDDL") (collectively, the
 * "License"). You may not use this file except in compliance with the
 * License. You can obtain a copy of the License at
 * http://www.netbeans.org/cddl-gplv2.html
 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
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 * License.  When distributing the software, include this License Header
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 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the GPL Version 2 section of the License file that
 * accompanied this code. If applicable, add the following below the
 * License Header, with the fields enclosed by brackets [] replaced by
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 */
package org.netbeans.modules.editor.gsfret;

import javax.swing.SwingUtilities;
import org.netbeans.modules.gsf.api.EditRegions;
import java.util.Set;
import javax.swing.JEditorPane;
import javax.swing.text.BadLocationException;
import javax.swing.text.Document;
import org.netbeans.modules.gsf.api.OffsetRange;
import org.netbeans.modules.gsf.Language;
import org.netbeans.modules.gsf.LanguageRegistry;
import org.openide.cookies.EditorCookie;
import org.openide.filesystems.FileObject;
import org.openide.loaders.DataObject;
import org.openide.loaders.DataObjectNotFoundException;
import org.openide.util.Exceptions;


/**
 * Provide access to document synch editing (until this is a core editing API)
 *
 * @author Tor Norbye
 */
public class EditRegionsImpl extends EditRegions {

    public void edit(final FileObject fo, final Set<OffsetRange> regions, final int caretOffset) throws BadLocationException {
        
        // This can only be called on the SwingUtilities thread
        if (!SwingUtilities.isEventDispatchThread()) {
            SwingUtilities.invokeLater(new Runnable() {
                public void run() {
                    try {
                        edit(fo, regions, caretOffset);
                    } catch (BadLocationException ble) {
                        Exceptions.printStackTrace(ble);
                    }
                }
            });
            
            return;
        }

        // Update caret listener
        DataObject dobj;

        try {
            dobj = DataObject.find(fo);
        }
        catch (DataObjectNotFoundException ex){
            return;
        }

        EditorCookie editorCookie = dobj.getCookie(EditorCookie.class);

        if (editorCookie == null) {
            return;
        }

        JEditorPane[] panes = editorCookie.getOpenedPanes();

        if ((panes == null) || (panes.length == 0)) {
            return;
        }

        JEditorPane pane = panes[0];

        Document doc = pane.getDocument();

        Language language = LanguageRegistry.getInstance().getLanguageByMimeType(fo.getMIMEType());
        if (language == null) {
            return;
        }

        if ((regions != null) && (regions.size() > 0)) {
            InstantRenamePerformer.performInstantRename(pane, regions, caretOffset);
        }
    }
}
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