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 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
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package org.openoffice.netbeans.modules.office.nodes;

import java.io.IOException;
import java.util.*;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

import org.openide.nodes.*;
import org.openide.actions.*;
import org.openide.util.actions.SystemAction;
import org.openide.util.HelpCtx;

import org.openoffice.netbeans.modules.office.options.OfficeSettings;
import org.openoffice.netbeans.modules.office.utils.NagDialog;
import org.openoffice.netbeans.modules.office.actions.OfficeDocumentCookie;

public class OfficeDocumentChildren extends Children.Keys
    implements ChangeListener {
    
    private OfficeDocumentCookie document = null;
    
    public OfficeDocumentChildren(OfficeDocumentCookie cookie) {
        document = cookie;
    }
    
    private void refreshKeys() {
        if (document == null) {
            setKeys(Collections.EMPTY_SET);
            return;
        }
        
        Enumeration parcels = document.getParcels();
        if (parcels.hasMoreElements() != true) {
            setKeys(Collections.EMPTY_SET);
            return;
        }
        
        ArrayList keys = new ArrayList();
        while (parcels.hasMoreElements()) {
            String parcel = (String)parcels.nextElement();
            keys.add(parcel);
        }
        setKeys(keys);
    }
    
    protected void addNotify() {
        super.addNotify();
        document.addChangeListener(this);
        refreshKeys();
    }
    
    protected void removeNotify() {
        super.removeNotify();
        document.removeChangeListener(this);
        setKeys(Collections.EMPTY_SET);
    }
    
    protected Node[] createNodes(Object key) {
        String name = (String)key;
        return new Node[] {new ParcelNode(name)};
    }
    
    public void stateChanged(ChangeEvent e) {
        refreshKeys();
    }
    
    private class ParcelNode extends AbstractNode {
        private String name;
        
        public ParcelNode(String name) {
            super(Children.LEAF);
            this.name = name;
            init();
        }

        private void init() {
            setIconBase("/org/openoffice/netbeans/modules/office/resources/ParcelIcon");

            setName(name);
            setDisplayName(name.substring(name.lastIndexOf("/") + 1));
            setShortDescription(name);
        }

        protected SystemAction[] createActions() {
            return new SystemAction[] {
                SystemAction.get(DeleteAction.class),
            };
        }

        public HelpCtx getHelpCtx() {
            return HelpCtx.DEFAULT_HELP;
        }
        
        public boolean canDestroy() {
            return true;
        }
        
        public void destroy() throws IOException {
            OfficeSettings settings = OfficeSettings.getDefault();
            String message = "If you already have this document open in " +
                "Office, please close it before continuing. Click OK to " +
                "delete this parcel.";

            if (settings.getWarnBeforeParcelDelete() == true) {
                NagDialog warning = NagDialog.createConfirmationDialog(
                    message, "Show this message in future", true);

                boolean result = warning.show();

                if (warning.getState() == false)
                    settings.setWarnBeforeParcelDelete(false);

                if (result == false)
                    return;
            }
            super.destroy();
            document.removeParcel(name);
        }
    }
}