| /******************************************************************************* |
| * 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 or enter a file name. |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>SAVE, OPEN, MULTI</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 FileDialog extends Dialog { |
| String [] filterNames = new String [0]; |
| String [] filterExtensions = new String [0]; |
| String filterPath = ""; |
| String fileName = ""; |
| String[] fileNames = new String [0]; |
| String fullPath = ""; |
| int /*long*/ handle; |
| static final char SEPARATOR = System.getProperty ("file.separator").charAt (0); |
| |
| /** |
| * 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 FileDialog (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 FileDialog (Shell parent, int style) { |
| super (parent, style); |
| checkSubclass (); |
| } |
| /** |
| * Returns the path of the first file that was |
| * selected in the dialog relative to the filter path |
| * |
| * @return the relative path of the file |
| */ |
| public String getFileName () { |
| return fileName; |
| } |
| /** |
| * Returns the paths of all files that were selected |
| * in the dialog relative to the filter path. |
| * |
| * @return the relative paths of the files |
| */ |
| public String [] getFileNames () { |
| return fileNames; |
| } |
| /** |
| * Returns the file extensions which the dialog will |
| * use to filter the files it shows. |
| * |
| * @return the file extensions filter |
| */ |
| public String [] getFilterExtensions () { |
| return filterExtensions; |
| } |
| /** |
| * Returns the file names which the dialog will |
| * use to filter the files it shows. |
| * |
| * @return the file name filter |
| */ |
| public String [] getFilterNames () { |
| return filterNames; |
| } |
| /** |
| * Returns the directory path that the dialog will use. |
| * File names in this path will appear in the dialog, |
| * filtered according to the filter extensions. |
| * |
| * @return the directory path string |
| * |
| * @see #setFilterExtensions |
| */ |
| public String getFilterPath () { |
| return filterPath; |
| } |
| /** |
| * Makes the dialog visible and brings it to the front |
| * of the display. |
| * |
| * @return a string describing the absolute path of the first selected file, |
| * 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); |
| handle = OS.gtk_file_selection_new (titleBytes); |
| if (parent != null) { |
| OS.gtk_window_set_transient_for (handle, parent.topHandle()); |
| } |
| String answer = null; |
| preset (); |
| 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); |
| answer = interpretOsAnswer (osAnswer); |
| } |
| OS.gtk_widget_destroy (handle); |
| return answer; |
| } |
| /** |
| * Set the initial filename which the dialog will |
| * select by default when opened to the argument, |
| * which may be null. The name will be prefixed with |
| * the filter path when one is supplied. |
| * |
| * @param string the file name |
| */ |
| public void setFileName (String string) { |
| fileName = string; |
| } |
| /** |
| * Set the file extensions which the dialog will |
| * use to filter the files it shows to the argument, |
| * which may be null. |
| * |
| * @param extensions the file extension filter |
| */ |
| public void setFilterExtensions (String [] extensions) { |
| filterExtensions = extensions; |
| } |
| /** |
| * Sets the file names which the dialog will |
| * use to filter the files it shows to the argument, |
| * which may be null. |
| * |
| * @param names the file name filter |
| */ |
| public void setFilterNames (String [] names) { |
| filterNames = names; |
| } |
| /** |
| * Sets the directory path that the dialog will use |
| * to the argument, which may be null. File names in this |
| * path will appear in the dialog, filtered according |
| * to the filter extensions. |
| * |
| * @param string the directory path |
| * |
| * @see #setFilterExtensions |
| */ |
| public void setFilterPath (String string) { |
| filterPath = string; |
| } |
| void preset() { |
| OS.gtk_file_selection_set_select_multiple(handle, (style & SWT.MULTI) != 0); |
| |
| /* Calculate the fully-specified file name and convert to bytes */ |
| StringBuffer stringBuffer = new StringBuffer (); |
| if (filterPath == null) { |
| filterPath = ""; |
| } else { |
| if (filterPath.length () > 0) { |
| stringBuffer.append (filterPath); |
| if (filterPath.charAt (filterPath.length () - 1) != SEPARATOR) { |
| stringBuffer.append (SEPARATOR); |
| } |
| } |
| } |
| if (fileName == null) { |
| fileName = ""; |
| } else { |
| stringBuffer.append (fileName); |
| } |
| fullPath = stringBuffer.toString (); |
| int length = fullPath.length (); |
| char [] buffer = new char [length + 1]; |
| fullPath.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); |
| |
| /* Set the extension */ |
| if (filterNames == null) filterNames = new String [0]; |
| if (filterExtensions == null) filterExtensions = new String [0]; |
| if (filterExtensions.length == 1) { |
| String ext = filterExtensions [0]; |
| byte [] extBytes = Converter.wcsToMbcs (null, ext, true); |
| OS.gtk_file_selection_complete (handle, extBytes); |
| } |
| fullPath = null; |
| fileNames = new String [0]; |
| } |
| String interpretOsAnswer(String osAnswer) { |
| if (osAnswer==null) return null; |
| int separatorIndex = osAnswer.lastIndexOf (SEPARATOR); |
| if (separatorIndex+1 == osAnswer.length ()) return null; |
| |
| String answer = fullPath = osAnswer; |
| fileName = fullPath.substring (separatorIndex+1); |
| filterPath = fullPath.substring (0, separatorIndex); |
| if ((style & SWT.MULTI) == 0) { |
| fileNames = new String[] {fileName}; |
| } else { |
| int /*long*/ namesPtr = OS.gtk_file_selection_get_selections (handle); |
| int /*long*/ namesPtr1 = namesPtr; |
| int /*long*/ [] namePtr = new int /*long*/ [1]; |
| OS.memmove (namePtr, namesPtr1, OS.PTR_SIZEOF); |
| int length = 0; |
| while (namePtr[0] != 0) { |
| length++; |
| namesPtr1+=OS.PTR_SIZEOF; |
| OS.memmove(namePtr, namesPtr1, OS.PTR_SIZEOF); |
| } |
| fileNames = new String [length]; |
| namePtr = new int /*long*/ [length]; |
| OS.memmove (namePtr, namesPtr, length * OS.PTR_SIZEOF); |
| for (int i = 0; i < length; i++) { |
| int /*long*/ utf8Ptr = OS.g_filename_to_utf8 (namePtr [i], -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); |
| char[] buffer = new char [(int)/*64*/items_written [0]]; |
| OS.memmove (buffer, utf16Ptr, items_written [0] * 2); |
| String name = new String (buffer); |
| fileNames [i] = name.substring (name.lastIndexOf (SEPARATOR) + 1); |
| OS.g_free (utf16Ptr); |
| OS.g_free (utf8Ptr); |
| } |
| OS.g_strfreev (namesPtr); |
| } |
| return answer; |
| } |
| |
| } |