com.opcoach.e4.preferences.handlers.E4PreferencesHandler.java Source code

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Here is the source code for com.opcoach.e4.preferences.handlers.E4PreferencesHandler.java

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/*******************************************************************************
 * Copyright (c) 2014 OPCoach.
 * 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:
 *     Manumitting Technologies : Brian de Alwis for initial API and implementation
 *     OPCoach  : O.Prouvost fix bugs on hierarchy
 *******************************************************************************//* 
                                                                                  * Handler to open up a configured preferences dialog.
                                                                                  * Written by Brian de Alwis, Manumitting Technologies.
                                                                                  * Placed in the public domain.
                                                                                  * This code comes from : http://www.eclipse.org/forums/index.php/fa/4347/
                                                                                  * and was referenced in the thread : http://www.eclipse.org/forums/index.php/m/750139/
                                                                                  */
package com.opcoach.e4.preferences.handlers;

import javax.inject.Named;

import org.eclipse.e4.core.di.annotations.CanExecute;
import org.eclipse.e4.core.di.annotations.Execute;
import org.eclipse.e4.ui.services.IServiceConstants;
import org.eclipse.jface.preference.PreferenceDialog;
import org.eclipse.jface.preference.PreferenceManager;
import org.eclipse.jface.viewers.ViewerComparator;
import org.eclipse.swt.widgets.Shell;

import com.opcoach.e4.preferences.internal.E4PreferenceRegistry;

public class E4PreferencesHandler {

    @CanExecute
    public boolean canExecute() {
        return true;
    }

    @Execute
    public void execute(@Named(IServiceConstants.ACTIVE_SHELL) Shell shell, E4PreferenceRegistry prefReg) {
        PreferenceManager pm = prefReg.getPreferenceManager();
        PreferenceDialog dialog = new PreferenceDialog(shell, pm);
        dialog.create();
        dialog.getTreeViewer().setComparator(new ViewerComparator());
        dialog.getTreeViewer().expandAll();
        dialog.open();
    }

}