| /******************************************************************************* |
| * Copyright (c) 2000, 2005 IBM Corporation and others. |
| * 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.ant.internal.ui.preferences; |
| |
| import java.io.File; |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import org.eclipse.ant.internal.ui.AntUIPlugin; |
| import org.eclipse.jface.preference.StringButtonFieldEditor; |
| import org.eclipse.jface.resource.JFaceResources; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.DirectoryDialog; |
| |
| public class URLFieldEditor extends StringButtonFieldEditor { |
| |
| public URLFieldEditor(String name, String labelText, Composite parent) { |
| super(name, labelText, parent); |
| setEmptyStringAllowed(false); |
| setChangeButtonText(JFaceResources.getString("openBrowse"));//$NON-NLS-1$ |
| setErrorMessage(AntPreferencesMessages.URLFieldEditor_0); //$NON-NLS-1$ |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.preference.StringFieldEditor#doCheckState() |
| */ |
| protected boolean doCheckState() { |
| String text= getTextControl().getText(); |
| if (text != null && text.length() > 0) { |
| try { |
| new URL(text); |
| } catch (MalformedURLException e) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| /* (non-Javadoc) |
| * Method declared on StringButtonFieldEditor. |
| * Opens the directory chooser dialog and returns the <code>URL</code> of the selected directory. |
| */ |
| protected String changePressed() { |
| URL url= null; |
| try { |
| url = new URL(getTextControl().getText()); |
| } catch (MalformedURLException e1) { |
| } |
| File f = null; |
| if (url != null) { |
| f= new File(url.getFile()); |
| if (!f.exists()) { |
| f = null; |
| } |
| } |
| |
| File d = getDirectory(f); |
| if (d == null) { |
| return null; |
| } |
| |
| try { |
| return d.toURL().toExternalForm(); |
| } catch (MalformedURLException e) { |
| AntUIPlugin.log("Internal error setting documentation location", e); //$NON-NLS-1$ |
| return null; |
| } |
| } |
| |
| /** |
| * 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); |
| 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; |
| } |
| } |