/******************************************************************************* * Copyright (c) 2006 Elphel, Inc and Excelsior, LLC. * This file is a part of Eclipse/VDT plug-in. * Eclipse/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 2 of the License, or (at your option) * any later version. * * Eclipse/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 Eclipse VDT plug-in; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA *******************************************************************************/ package com.elphel.vdt.ui.preferences; import java.io.File; import org.eclipse.jface.preference.StringButtonFieldEditor; import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.DirectoryDialog; import com.elphel.vdt.Txt; /** * A field editor for a Xilinx path type preference. * * Created: 12.12.2005 * @author Lvov Konstantin */ public class XilinxPathFieldEditor extends StringButtonFieldEditor { /** * Creates a directory field editor. * * @param name the name of the preference this field editor works on * @param parent the parent of the field editor's control */ public XilinxPathFieldEditor(Composite parent) { init(PreferenceConstants.Xilinx_PATH, Txt.s("Property.Xilinx.Path.prompt")); setErrorMessage(Txt.s("Property.Xilinx.Path.errorMessage")); setChangeButtonText(Txt.s("Property.Xilinx.Path.browse")); setValidateStrategy(VALIDATE_ON_FOCUS_LOST); createControl(parent); } /* (non-Javadoc) * Method declared on StringButtonFieldEditor. * Opens the directory chooser dialog and returns the selected directory. */ protected String changePressed() { File f = new File(getTextControl().getText()); if (!f.exists()) f = null; File d = getDirectory(f); if (d == null) return null; return d.getAbsolutePath(); } /* (non-Javadoc) * Method declared on StringFieldEditor. * Checks whether the text input field contains a valid directory. */ protected boolean doCheckState() { String fileName = getTextControl().getText(); fileName = fileName.trim(); if (fileName.length() == 0 && isEmptyStringAllowed()) return true; File file = new File(fileName); return file.isDirectory(); } /** * Helper that opens the directory chooser dialog. * @param startingDirectory The directory the dialog will open in. * @return File File or <code>null</code>. * */ private File getDirectory(File startingDirectory) { DirectoryDialog fileDialog = new DirectoryDialog(getShell(), SWT.OPEN); fileDialog.setMessage(Txt.s("Property.Xilinx.Path.BrowseDialog.Message")); if (startingDirectory != null) fileDialog.setFilterPath(startingDirectory.getPath()); String dir = fileDialog.open(); if (dir != null) { dir = dir.trim(); if (dir.length() > 0) return new File(dir); } return null; } } // class XilinxPathFieldEditor