SaveDatabaseToFileHandler.java

/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed 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 specific language governing permissions and
* limitations under the License.
*/
package com.motorolamobility.studio.android.db.devices.ui.action;

import java.io.File;
import java.io.IOException;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.commands.IHandler;
import org.eclipse.core.runtime.IPath;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.swt.widgets.Shell;

import com.motorola.studio.android.common.utilities.FileUtil;
import com.motorolamobility.studio.android.db.core.ui.ITreeNode;
import com.motorolamobility.studio.android.db.devices.i18n.DbDevicesNLS;
import com.motorolamobility.studio.android.db.devices.model.DeviceDbNode;

public class SaveDatabaseToFileHandler extends AbstractHandler implements IHandler
{
    private DeviceDbNode deviceDbNode;

    public SaveDatabaseToFileHandler(ITreeNode node)
    {
        if (node instanceof DeviceDbNode)
        {
            this.deviceDbNode = (DeviceDbNode) node;
        }
    }

    public Object execute(ExecutionEvent event) throws ExecutionException
    {
        if (deviceDbNode != null)
        {
            Shell shell = Display.getCurrent().getActiveShell();
            FileDialog dialog = new FileDialog(shell, SWT.SAVE);
            dialog.setFileName(deviceDbNode.getRemoteDbPath().lastSegment());
            dialog.setFilterNames(new String[]
            {
                    DbDevicesNLS.SaveDatabaseToFile_DbFiles,
                    DbDevicesNLS.SaveDatabaseToFile_AllFiles
            });
            dialog.setFilterExtensions(new String[]
            {
                    "*.db", "*.*" //$NON-NLS-1$ //$NON-NLS-2$
            });

            String selectedFilePath = dialog.open(); //returns null if dialog is cancelled            

            if (selectedFilePath != null)
            {
                //dialog confirmed
                File targetFile = new File(selectedFilePath);

                IPath temporaryFilePath = deviceDbNode.getPath();
                File sourceFile = temporaryFilePath.toFile();

                try
                {
                    FileUtil.copyFile(sourceFile, targetFile);
                }
                catch (IOException e)
                {
                    throw new ExecutionException(DbDevicesNLS.bind(
                            DbDevicesNLS.SaveDatabaseToFile_CopyDatabase_Error,
                            deviceDbNode.getName(), targetFile), e);
                }
            }

        }
        return null;
    }

}