| /******************************************************************************* |
| * Copyright (c) 2000, 2003 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.widgets; |
| |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.internal.*; |
| import org.eclipse.swt.internal.gtk.*; |
| |
| /** |
| * Instances of this class allow the user to navigate |
| * the file system and select a directory. |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>(none)</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>(none)</dd> |
| * </dl> |
| * <p> |
| * IMPORTANT: This class is intended to be subclassed <em>only</em> |
| * within the SWT implementation. |
| * </p> |
| */ |
| public class DirectoryDialog extends Dialog { |
| String message = "", filterPath = ""; |
| static final String SEPARATOR = System.getProperty ("file.separator"); |
| |
| /** |
| * Constructs a new instance of this class given only its parent. |
| * |
| * @param parent a shell which will be the parent of the new instance |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
| * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
| * </ul> |
| */ |
| public DirectoryDialog (Shell parent) { |
| this (parent, SWT.PRIMARY_MODAL); |
| } |
| /** |
| * Constructs a new instance of this class given its parent |
| * and a style value describing its behavior and appearance. |
| * <p> |
| * The style value is either one of the style constants defined in |
| * class <code>SWT</code> which is applicable to instances of this |
| * class, or must be built by <em>bitwise OR</em>'ing together |
| * (that is, using the <code>int</code> "|" operator) two or more |
| * of those <code>SWT</code> style constants. The class description |
| * lists the style constants that are applicable to the class. |
| * Style bits are also inherited from superclasses. |
| * </p> |
| * |
| * @param parent a shell which will be the parent of the new instance |
| * @param style the style of dialog to construct |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
| * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
| * </ul> |
| */ |
| public DirectoryDialog (Shell parent, int style) { |
| super (parent, style); |
| checkSubclass (); |
| } |
| /** |
| * Returns the path which the dialog will use to filter |
| * the directories it shows. |
| * |
| * @return the filter path |
| */ |
| public String getFilterPath () { |
| return filterPath; |
| } |
| /** |
| * Returns the dialog's message, which is a description of |
| * the purpose for which it was opened. This message will be |
| * visible on the dialog while it is open. |
| * |
| * @return the message |
| */ |
| public String getMessage () { |
| return message; |
| } |
| /** |
| * Makes the dialog visible and brings it to the front |
| * of the display. |
| * |
| * @return a string describing the absolute path of the selected directory, |
| * or null if the dialog was cancelled or an error occurred |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the dialog has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the dialog</li> |
| * </ul> |
| */ |
| public String open () { |
| byte [] titleBytes = Converter.wcsToMbcs (null, title, true); |
| int /*long*/ handle = OS.gtk_file_selection_new (titleBytes); |
| if (parent != null) { |
| OS.gtk_window_set_transient_for (handle, parent.topHandle ()); |
| } |
| String answer = null; |
| if (filterPath != null) { |
| String path = filterPath; |
| if (path.length () > 0 && !path.endsWith (SEPARATOR)) { |
| path += SEPARATOR; |
| } |
| int length = path.length (); |
| char [] buffer = new char [length + 1]; |
| path.getChars (0, length, buffer, 0); |
| int /*long*/ utf8Ptr = OS.g_utf16_to_utf8 (buffer, -1, null, null, null); |
| int /*long*/ fileNamePtr = OS.g_filename_from_utf8 (utf8Ptr, -1, null, null, null); |
| OS.gtk_file_selection_set_filename (handle, fileNamePtr); |
| OS.g_free (utf8Ptr); |
| OS.g_free (fileNamePtr); |
| } |
| GtkFileSelection selection = new GtkFileSelection (); |
| OS.memmove (selection, handle); |
| OS.gtk_file_selection_hide_fileop_buttons (handle); |
| int /*long*/ fileListParent = OS.gtk_widget_get_parent (selection.file_list); |
| OS.gtk_widget_hide (selection.file_list); |
| OS.gtk_widget_hide (fileListParent); |
| if (message.length () > 0) { |
| byte [] buffer = Converter.wcsToMbcs (null, message, true); |
| int /*long*/ labelHandle = OS.gtk_label_new (buffer); |
| OS.gtk_container_add (selection.main_vbox, labelHandle); |
| OS.gtk_widget_show (labelHandle); |
| } |
| int response = OS.gtk_dialog_run (handle); |
| if (response == OS.GTK_RESPONSE_OK) { |
| int /*long*/ fileNamePtr = OS.gtk_file_selection_get_filename (handle); |
| int /*long*/ utf8Ptr = OS.g_filename_to_utf8 (fileNamePtr, -1, null, null, null); |
| int /*long*/ [] items_written = new int /*long*/ [1]; |
| int /*long*/ utf16Ptr = OS.g_utf8_to_utf16 (utf8Ptr, -1, null, items_written, null); |
| int length = (int)/*64*/items_written [0]; |
| char [] buffer = new char [length]; |
| OS.memmove (buffer, utf16Ptr, length * 2); |
| String osAnswer = new String (buffer); |
| OS.g_free (utf16Ptr); |
| OS.g_free (utf8Ptr); |
| if (osAnswer != null) { |
| /* remove trailing separator, unless root directory */ |
| if (!osAnswer.equals (SEPARATOR) && osAnswer.endsWith (SEPARATOR)) { |
| osAnswer = osAnswer.substring (0, osAnswer.length () - 1); |
| } |
| answer = filterPath = osAnswer; |
| } |
| } |
| OS.gtk_widget_destroy (handle); |
| return answer; |
| } |
| /** |
| * Sets the path which the dialog will use to filter |
| * the directories it shows to the argument, which may be |
| * null. |
| * |
| * @param string the filter path |
| */ |
| public void setFilterPath (String string) { |
| filterPath = string; |
| } |
| /** |
| * Sets the dialog's message, which is a description of |
| * the purpose for which it was opened. This message will be |
| * visible on the dialog while it is open. |
| * |
| * @param string the message |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * </ul> |
| */ |
| public void setMessage (String string) { |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| message = string; |
| } |
| } |