Mercurial > projects > dwt-win
annotate dwt/widgets/DirectoryDialog.d @ 213:36f5cb12e1a2
Update to SWT 3.4M7
author | Frank Benoit <benoit@tionex.de> |
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date | Sat, 17 May 2008 17:34:28 +0200 |
parents | ab60f3309436 |
children | 43b41c7fe84a |
rev | line source |
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1 /******************************************************************************* |
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2 * Copyright (c) 2000, 2006 IBM Corporation and others. |
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3 * All rights reserved. This program and the accompanying materials |
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4 * are made available under the terms of the Eclipse Public License v1.0 |
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5 * which accompanies this distribution, and is available at |
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6 * http://www.eclipse.org/legal/epl-v10.html |
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7 * |
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8 * Contributors: |
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9 * IBM Corporation - initial API and implementation |
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10 * Port to the D programming language: |
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11 * Frank Benoit <benoit@tionex.de> |
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12 *******************************************************************************/ |
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13 module dwt.widgets.DirectoryDialog; |
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14 |
181 | 15 import dwt.widgets.Display; |
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16 import dwt.widgets.Dialog; |
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17 import dwt.widgets.Shell; |
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18 |
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19 import dwt.DWT; |
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20 import dwt.DWTException; |
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21 import dwt.internal.win32.OS; |
181 | 22 import dwt.internal.C; |
23 | |
24 import dwt.dwthelper.utils; | |
25 static import tango.text.Text; | |
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26 |
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27 /** |
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28 * Instances of this class allow the user to navigate |
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29 * the file system and select a directory. |
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30 * <dl> |
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31 * <dt><b>Styles:</b></dt> |
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32 * <dd>(none)</dd> |
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33 * <dt><b>Events:</b></dt> |
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34 * <dd>(none)</dd> |
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35 * </dl> |
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36 * <p> |
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37 * IMPORTANT: This class is intended to be subclassed <em>only</em> |
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38 * within the DWT implementation. |
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39 * </p> |
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40 */ |
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41 |
181 | 42 public class DirectoryDialog : Dialog { |
212
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43 static String message = ""; |
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44 static String filterPath = ""; //$NON-NLS-1$//$NON-NLS-2$ |
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45 static String directoryPath; |
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46 |
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47 /** |
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48 * Constructs a new instance of this class given only its parent. |
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49 * |
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50 * @param parent a shell which will be the parent of the new instance |
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51 * |
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52 * @exception IllegalArgumentException <ul> |
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53 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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54 * </ul> |
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55 * @exception DWTException <ul> |
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56 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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57 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
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58 * </ul> |
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59 */ |
181 | 60 public this (Shell parent) { |
213 | 61 this (parent, DWT.APPLICATION_MODAL); |
31
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62 } |
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63 |
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64 /** |
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65 * Constructs a new instance of this class given its parent |
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66 * and a style value describing its behavior and appearance. |
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67 * <p> |
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68 * The style value is either one of the style constants defined in |
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69 * class <code>DWT</code> which is applicable to instances of this |
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70 * class, or must be built by <em>bitwise OR</em>'ing together |
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71 * (that is, using the <code>int</code> "|" operator) two or more |
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72 * of those <code>DWT</code> style constants. The class description |
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73 * lists the style constants that are applicable to the class. |
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74 * Style bits are also inherited from superclasses. |
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75 * </p> |
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76 * |
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77 * @param parent a shell which will be the parent of the new instance |
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78 * @param style the style of dialog to construct |
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79 * |
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80 * @exception IllegalArgumentException <ul> |
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81 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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82 * </ul> |
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83 * @exception DWTException <ul> |
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84 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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85 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
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86 * </ul> |
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87 */ |
181 | 88 public this (Shell parent, int style) { |
213 | 89 super (parent, checkStyle (parent, style)); |
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90 checkSubclass (); |
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91 } |
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92 |
181 | 93 extern(Windows)static int BrowseCallbackProc (HWND hwnd, uint uMsg, int lParam, int lpData) { |
94 DirectoryDialog pThis = cast(DirectoryDialog)cast(void*)lpData; | |
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95 switch (uMsg) { |
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96 case OS.BFFM_INITIALIZED: |
181 | 97 if (pThis.filterPath !is null && pThis.filterPath.length !is 0) { |
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98 /* Use the character encoding for the default locale */ |
181 | 99 TCHAR[] buffer = StrToTCHARs (0, pThis.filterPath.replace ('/', '\\'), true); |
100 OS.SendMessage (hwnd, OS.BFFM_SETSELECTION, 1, buffer.ptr); | |
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101 } |
181 | 102 if (pThis.title !is null && pThis.title.length !is 0) { |
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103 /* Use the character encoding for the default locale */ |
181 | 104 TCHAR[] buffer = StrToTCHARs (0, pThis.title, true); |
105 OS.SetWindowText (hwnd, buffer.ptr); | |
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106 } |
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107 break; |
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108 case OS.BFFM_VALIDATEFAILEDA: |
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109 case OS.BFFM_VALIDATEFAILEDW: |
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110 /* Use the character encoding for the default locale */ |
181 | 111 // int length = OS.IsUnicode ? OS.wcslen (lParam) : OS.strlen (lParam); |
112 // TCHAR buffer = new TCHAR (0, length); | |
113 // int byteCount = buffer.length * TCHAR.sizeof; | |
114 // OS.MoveMemory (buffer, lParam, byteCount); | |
115 // directoryPath = buffer.toString (0, length); | |
182 | 116 pThis.directoryPath = TCHARzToStr( cast(TCHAR*)lParam ); |
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117 break; |
82 | 118 default: |
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119 } |
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120 return 0; |
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121 } |
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122 |
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123 /** |
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124 * Returns the path which the dialog will use to filter |
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125 * the directories it shows. |
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126 * |
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127 * @return the filter path |
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128 * |
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129 * @see #setFilterPath |
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130 */ |
212
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131 public String getFilterPath () { |
31
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132 return filterPath; |
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133 } |
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134 |
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135 /** |
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136 * Returns the dialog's message, which is a description of |
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137 * the purpose for which it was opened. This message will be |
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138 * visible on the dialog while it is open. |
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139 * |
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140 * @return the message |
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141 */ |
212
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142 public String getMessage () { |
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143 return message; |
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144 } |
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145 |
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146 /** |
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147 * Makes the dialog visible and brings it to the front |
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148 * of the display. |
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149 * |
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150 * @return a string describing the absolute path of the selected directory, |
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151 * or null if the dialog was cancelled or an error occurred |
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152 * |
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153 * @exception DWTException <ul> |
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154 * <li>ERROR_WIDGET_DISPOSED - if the dialog has been disposed</li> |
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155 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the dialog</li> |
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156 * </ul> |
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157 */ |
212
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158 public String open () { |
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159 if (OS.IsWinCE) DWT.error (DWT.ERROR_NOT_IMPLEMENTED); |
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160 |
181 | 161 auto hHeap = OS.GetProcessHeap (); |
31
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162 |
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163 /* Get the owner HWND for the dialog */ |
181 | 164 HWND hwndOwner; |
31
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165 if (parent !is null) hwndOwner = parent.handle; |
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166 |
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167 /* Copy the message to OS memory */ |
181 | 168 TCHAR* lpszTitle; |
169 if (message.length !is 0) { | |
212
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170 String string = message; |
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171 if (string.indexOf ('&') !is -1) { |
181 | 172 int length = string.length; |
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173 char [] buffer = new char [length * 2]; |
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174 int index = 0; |
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175 for (int i=0; i<length; i++) { |
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176 char ch = string.charAt (i); |
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177 if (ch is '&') buffer [index++] = '&'; |
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178 buffer [index++] = ch; |
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179 } |
181 | 180 // string = new String (buffer, 0, index); |
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181 } |
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182 /* Use the character encoding for the default locale */ |
181 | 183 TCHAR[] buffer = StrToTCHARs (0, string, true); |
184 int byteCount = buffer.length * TCHAR.sizeof; | |
185 lpszTitle = cast(TCHAR*)OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, byteCount); | |
186 OS.MoveMemory (lpszTitle, buffer.ptr, byteCount); | |
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187 } |
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188 |
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189 /* Create the BrowseCallbackProc */ |
181 | 190 /+ Callback callback = new Callback (this, "BrowseCallbackProc", 4); //$NON-NLS-1$ |
191 int lpfn = callback.getAddress ();+/ | |
182 | 192 BFFCALLBACK lpfn = &BrowseCallbackProc; |
181 | 193 if (lpfn is null) DWT.error (DWT.ERROR_NO_MORE_CALLBACKS); |
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194 |
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195 /* Make the parent shell be temporary modal */ |
213 | 196 Dialog oldModal = null; |
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197 Display display = parent.getDisplay (); |
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198 if ((style & (DWT.APPLICATION_MODAL | DWT.SYSTEM_MODAL)) !is 0) { |
213 | 199 oldModal = display.getModalDialog (); |
200 display.setModalDialog (this); | |
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201 } |
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202 |
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203 directoryPath = null; |
181 | 204 BROWSEINFO lpbi; |
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205 lpbi.hwndOwner = hwndOwner; |
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206 lpbi.lpszTitle = lpszTitle; |
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207 lpbi.ulFlags = OS.BIF_NEWDIALOGSTYLE | OS.BIF_RETURNONLYFSDIRS | OS.BIF_EDITBOX | OS.BIF_VALIDATE; |
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208 lpbi.lpfn = lpfn; |
181 | 209 lpbi.lParam = cast(int)cast(void*)this; |
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210 /* |
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211 * Bug in Windows. On some hardware configurations, SHBrowseForFolder() |
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212 * causes warning dialogs with the message "There is no disk in the drive |
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213 * Please insert a disk into \Device\Harddisk0\DR0". This is possibly |
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214 * caused by SHBrowseForFolder() calling internally GetVolumeInformation(). |
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215 * MSDN for GetVolumeInformation() says: |
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216 * |
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217 * "If you are attempting to obtain information about a floppy drive |
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218 * that does not have a floppy disk or a CD-ROM drive that does not |
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219 * have a compact disc, the system displays a message box asking the |
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220 * user to insert a floppy disk or a compact disc, respectively. |
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221 * To prevent the system from displaying this message box, call the |
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222 * SetErrorMode function with SEM_FAILCRITICALERRORS." |
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223 * |
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224 * The fix is to save and restore the error mode using SetErrorMode() |
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225 * with the SEM_FAILCRITICALERRORS flag around SHBrowseForFolder(). |
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226 */ |
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227 int oldErrorMode = OS.SetErrorMode (OS.SEM_FAILCRITICALERRORS); |
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228 |
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229 /* |
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230 * Bug in Windows. When a WH_MSGFILTER hook is used to run code |
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231 * during the message loop for SHBrowseForFolder(), running code |
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232 * in the hook can cause a GP. Specifically, SetWindowText() |
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233 * for static controls seemed to make the problem happen. |
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234 * The fix is to disable async messages while the directory |
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235 * dialog is open. |
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236 * |
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237 * NOTE: This only happens in versions of the comctl32.dll |
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238 * earlier than 6.0. |
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239 */ |
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240 bool oldRunMessages = display.runMessages; |
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241 if (OS.COMCTL32_MAJOR < 6) display.runMessages = false; |
181 | 242 ITEMIDLIST* lpItemIdList = OS.SHBrowseForFolder (&lpbi); |
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243 if (OS.COMCTL32_MAJOR < 6) display.runMessages = oldRunMessages; |
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244 OS.SetErrorMode (oldErrorMode); |
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245 |
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246 /* Clear the temporary dialog modal parent */ |
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247 if ((style & (DWT.APPLICATION_MODAL | DWT.SYSTEM_MODAL)) !is 0) { |
213 | 248 display.setModalDialog (oldModal); |
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249 } |
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250 |
181 | 251 bool success = lpItemIdList !is null; |
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252 if (success) { |
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253 /* Use the character encoding for the default locale */ |
181 | 254 TCHAR[OS.MAX_PATH] buffer; |
255 if (OS.SHGetPathFromIDList (lpItemIdList, buffer.ptr)) { | |
256 directoryPath = TCHARzToStr (buffer.ptr); | |
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257 filterPath = directoryPath; |
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258 } |
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259 } |
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260 |
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261 /* Free the BrowseCallbackProc */ |
181 | 262 // callback.dispose (); |
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263 |
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264 /* Free the OS memory */ |
181 | 265 if (lpszTitle !is null) OS.HeapFree (hHeap, 0, lpszTitle); |
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266 |
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267 /* Free the pointer to the ITEMIDLIST */ |
181 | 268 LPVOID ppMalloc; |
269 if (OS.SHGetMalloc (&ppMalloc) is OS.S_OK) { | |
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270 /* void Free (struct IMalloc *this, void *pv); */ |
181 | 271 OS.VtblCall (5, ppMalloc , cast(int)lpItemIdList); |
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272 } |
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273 |
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274 /* |
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275 * This code is intentionally commented. On some |
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276 * platforms, the owner window is repainted right |
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277 * away when a dialog window exits. This behavior |
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278 * is currently unspecified. |
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279 */ |
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280 // if (hwndOwner !is 0) OS.UpdateWindow (hwndOwner); |
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281 |
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282 /* Return the directory path */ |
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283 if (!success) return null; |
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284 return directoryPath; |
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285 } |
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286 |
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287 /** |
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288 * Sets the path that the dialog will use to filter |
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289 * the directories it shows to the argument, which may |
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290 * be null. If the string is null, then the operating |
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291 * system's default filter path will be used. |
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292 * <p> |
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293 * Note that the path string is platform dependent. |
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294 * For convenience, either '/' or '\' can be used |
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295 * as a path separator. |
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296 * </p> |
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297 * |
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298 * @param string the filter path |
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299 */ |
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300 public void setFilterPath (String string) { |
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301 filterPath = string; |
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302 } |
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303 |
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304 /** |
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305 * Sets the dialog's message, which is a description of |
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306 * the purpose for which it was opened. This message will be |
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307 * visible on the dialog while it is open. |
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308 * |
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309 * @param string the message |
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310 * |
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311 * @exception IllegalArgumentException <ul> |
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312 * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
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313 * </ul> |
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314 */ |
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315 public void setMessage (String string) { |
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316 if (string is null) error (DWT.ERROR_NULL_ARGUMENT); |
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317 message = string; |
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318 } |
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319 |
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320 } |