| package org.eclipse.swt.widgets; |
| |
| /* |
| * Copyright (c) 2000, 2002 IBM Corp. All rights reserved. |
| * This file is 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 |
| */ |
| |
| import org.eclipse.swt.internal.carbon.*; |
| import org.eclipse.swt.*; |
| |
| /** |
| * Instances of this class allow the user to navigate |
| * the file system and select a directory. |
| * <p> |
| * IMPORTANT: This class is intended to be subclassed <em>only</em> |
| * within the SWT implementation. |
| * </p> |
| */ |
| public class DirectoryDialog extends Dialog { |
| String filterPath = ""; |
| String message = ""; |
| /** |
| * Constructs a new instance of this class given only its |
| * parent. |
| * <p> |
| * Note: Currently, null can be passed in for the parent. |
| * This has the effect of creating the dialog on the currently active |
| * display if there is one. If there is no current display, the |
| * dialog is created on a "default" display. <b>Passing in null as |
| * the parent is not considered to be good coding style, |
| * and may not be supported in a future release of SWT.</b> |
| * </p> |
| * |
| * @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> |
| * Note: Currently, null can be passed in for the parent. |
| * This has the effect of creating the dialog on the currently active |
| * display if there is one. If there is no current display, the |
| * dialog is created on a "default" display. <b>Passing in null as |
| * the parent is not considered to be good coding style, |
| * and may not be supported in a future release of SWT.</b> |
| * </p> |
| * |
| * @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, 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 () { |
| |
| int dialog= 0; |
| String result= null; |
| |
| int titleHandle= 0; |
| int messageHandle= 0; |
| try { |
| int[] dialogHandle= new int[1]; |
| |
| int parentWindowHandle= 0; |
| if (parent != null) |
| parentWindowHandle= parent.shellHandle; |
| |
| titleHandle= OS.CFStringCreateWithCharacters(title); |
| messageHandle= OS.CFStringCreateWithCharacters(message); |
| |
| int flags= 0; |
| OS.NavCreateChooseFolderDialog(flags, titleHandle, messageHandle, parentWindowHandle, dialogHandle); |
| dialog= dialogHandle[0]; |
| |
| if (dialog != 0) { |
| |
| OS.NavDialogRun(dialog); |
| |
| switch (OS.NavDialogGetUserAction(dialog)) { |
| case OS.kNavUserActionCancel: |
| break; |
| |
| case OS.kNavUserActionOpen: |
| case OS.kNavUserActionChoose: |
| String[] directories= FileDialog.getPaths(dialog); |
| if (directories.length > 0) |
| result= directories[0]; |
| break; |
| } |
| } |
| |
| } finally { |
| if (titleHandle != 0) |
| OS.CFRelease(titleHandle); |
| if (messageHandle != 0) |
| OS.CFRelease(messageHandle); |
| if (dialog != 0) |
| OS.NavDialogDispose(dialog); |
| } |
| |
| return result; |
| } |
| /** |
| * 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 |
| */ |
| public void setMessage (String string) { |
| message = string; |
| } |
| } |