/*******************************************************************************
 * Copyright (c) 2014 Elphel, Inc.
 * Copyright (c) 2006 Elphel, Inc and Excelsior, LLC.
 * This file is a part of VDT plug-in.
 * VDT plug-in is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * VDT plug-in is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * 
 *  Additional permission under GNU GPL version 3 section 7:
 * If you modify this Program, or any covered work, by linking or combining it
 * with Eclipse or Eclipse plugins (or a modified version of those libraries),
 * containing parts covered by the terms of EPL/CPL, the licensors of this
 * Program grant you additional permission to convey the resulting work.
 * {Corresponding Source for a non-source form of such a combination shall
 * include the source code for the parts of Eclipse or Eclipse plugins used
 * as well as that of the covered work.}
 *******************************************************************************/
package com.elphel.vdt.ui.options.component;

import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.FileDialog;

import com.elphel.vdt.core.tools.params.Parameter;
import com.elphel.vdt.core.tools.params.types.ParamTypeString;

public class FileComponent extends BrowsableComponent {

    public FileComponent(Parameter param) {
        super(param);
    }
    
    public void createControl(Composite parent) {
        super.createControl(parent);

        String filemask = ((ParamTypeString)param.getType()).getFilemask();
        final String[] extensions = (filemask != null? new String[] { filemask } : null);
                
        locationField.createControl(parent);                                                                            
        locationField.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent event) {
                if(locationField.getBrowseDialog() == null) {
                    FileDialog fileDialog = 
                        new FileDialog(locationField.getBrowsedNameField().getShell());
                
                    fileDialog.setFilterExtensions(extensions);
                    
                    locationField.setBrowseDialog(fileDialog);
                }
                
                FileDialog dialog = (FileDialog)locationField.getBrowseDialog();
                String selectedFile = dialog.open();

                if(selectedFile != null)
                    locationField.getBrowsedNameField().setText(selectedFile);
            }
        });
        
        locationField.setMenu(createPopupMenu(locationField.getShell()));        
        endCreateControl();
    }
    
} // class FileComponent