gov.nasa.arc.spife.ui.table.days.preferences.DaysEditorPreferencePageHandler.java Source code

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Here is the source code for gov.nasa.arc.spife.ui.table.days.preferences.DaysEditorPreferencePageHandler.java

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/*******************************************************************************
 * Copyright 2014 United States Government as represented by the
 * Administrator of the National Aeronautics and Space Administration.
 * All Rights Reserved.
 * 
 * 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 gov.nasa.arc.spife.ui.table.days.preferences;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.jface.preference.PreferenceDialog;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.dialogs.PreferencesUtil;
import org.eclipse.ui.handlers.HandlerUtil;

public class DaysEditorPreferencePageHandler extends AbstractHandler {

    @Override
    public final Object execute(final ExecutionEvent event) {
        final IWorkbenchWindow activeWorkbenchWindow = HandlerUtil.getActiveWorkbenchWindow(event);

        final Shell shell;
        if (activeWorkbenchWindow == null) {
            shell = null;
        } else {
            shell = activeWorkbenchWindow.getShell();
        }

        final PreferenceDialog prefDialog = PreferencesUtil.createPreferenceDialogOn(shell,
                DaysEditorPreferencePage.PAGE_ID, null, null);
        if (prefDialog != null)
            prefDialog.open();

        return null;
    }
}