DiffOptionsController.java :  » IDE-Netbeans » diff » org » netbeans » modules » diff » options » Java Open Source

/*
 * 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
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 * http://www.netbeans.org/cddl-gplv2.html
 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
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 * Notice in each file and include the License file at
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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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 * Contributor(s):
 *
 * The Original Software is NetBeans. The Initial Developer of the Original
 * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
 * Microsystems, Inc. All Rights Reserved.
 *
 * If you wish your version of this file to be governed by only the CDDL
 * or only the GPL Version 2, indicate your decision by adding
 * "[Contributor] elects to include this software in this distribution
 * under the [CDDL or GPL Version 2] license." If you do not indicate a
 * single choice of license, a recipient has the option to distribute
 * your version of this file under either the CDDL, the GPL Version 2 or
 * to extend the choice of license to its licensees as provided above.
 * However, if you add GPL Version 2 code and therefore, elected the GPL
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package org.netbeans.modules.diff.options;

import org.netbeans.modules.diff.*;
import org.netbeans.spi.options.OptionsPanelController;
import org.openide.util.Lookup;
import org.openide.util.HelpCtx;
import org.openide.util.NbBundle;
import org.openide.DialogDisplayer;
import org.openide.NotifyDescriptor;

import javax.swing.*;
import java.beans.PropertyChangeListener;
import java.io.IOException;

/**
 * Diff module's Options Controller.
 * 
 * @author Maros Sandor
 */
class DiffOptionsController extends OptionsPanelController {

    private DiffOptionsPanel panel;
    
    public void update() {
        panel.getInternalDiff().setSelected(DiffModuleConfig.getDefault().isUseInteralDiff());
        panel.getExternalDiff().setSelected(!DiffModuleConfig.getDefault().isUseInteralDiff());
        panel.getIgnoreWhitespace().setSelected(DiffModuleConfig.getDefault().isIgnoreWhitespace());
        panel.getExternalCommand().setText(DiffModuleConfig.getDefault().getPreferences().get(DiffModuleConfig.PREF_EXTERNAL_DIFF_COMMAND, "diff {0} {1}")); // NOI18N
        panel.setChanged(false);
    }

    public void applyChanges() {
        checkExternalCommand();
        DiffModuleConfig.getDefault().setUseInteralDiff(panel.getInternalDiff().isSelected());
        DiffModuleConfig.getDefault().setIgnoreWhitespace(panel.getIgnoreWhitespace().isSelected());
        DiffModuleConfig.getDefault().getPreferences().put(DiffModuleConfig.PREF_EXTERNAL_DIFF_COMMAND, panel.getExternalCommand().getText());
        panel.setChanged(false);
    }

    private void checkExternalCommand() {
        if (panel.getInternalDiff().isSelected()) return;
        String cmd = panel.getExternalCommand().getText();
        try {
            Process p = Runtime.getRuntime().exec(cmd);
            p.destroy();
        } catch (IOException e) {
            // the command seems invalid
            DialogDisplayer.getDefault().notify(
                new NotifyDescriptor.Message(NbBundle.getMessage(DiffOptionsController.class, "MSG_InvalidDiffCommand"), NotifyDescriptor.WARNING_MESSAGE));
            return ;
        }
    }

    public void cancel() {
        // nothing to do
    }

    public boolean isValid() {
        return true;
    }

    public boolean isChanged() {
        return panel.isChanged();
    }

    public JComponent getComponent(Lookup masterLookup) {
        if (panel == null) {
            panel = new DiffOptionsPanel(); 
        }
        return panel;
    }

    public HelpCtx getHelpCtx() {
        return new HelpCtx(DiffOptionsController.class);
    }

    public void addPropertyChangeListener(PropertyChangeListener l) {
    }

    public void removePropertyChangeListener(PropertyChangeListener l) {
    }
}