Mercurial > projects > dwt2
annotate org.eclipse.swt.win32.win32.x86/src/org/eclipse/swt/widgets/DirectoryDialog.d @ 9:950d84783eac
Removing direct tango deps.
author | Frank Benoit <benoit@tionex.de> |
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date | Mon, 09 Mar 2009 14:26:40 +0100 |
parents | 6dd524f61e62 |
children | 2e09b0e6857a |
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1 /******************************************************************************* |
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2 * Copyright (c) 2000, 2008 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 org.eclipse.swt.widgets.DirectoryDialog; |
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14 |
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15 import org.eclipse.swt.widgets.Display; |
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16 import org.eclipse.swt.widgets.Dialog; |
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17 import org.eclipse.swt.widgets.Shell; |
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18 |
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19 import org.eclipse.swt.SWT; |
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20 import org.eclipse.swt.SWTException; |
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21 import org.eclipse.swt.internal.win32.OS; |
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22 import org.eclipse.swt.internal.C; |
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23 |
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24 import java.lang.all; |
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25 |
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26 /** |
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27 * Instances of this class allow the user to navigate |
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28 * the file system and select a directory. |
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29 * <dl> |
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30 * <dt><b>Styles:</b></dt> |
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31 * <dd>(none)</dd> |
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32 * <dt><b>Events:</b></dt> |
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33 * <dd>(none)</dd> |
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34 * </dl> |
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35 * <p> |
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36 * IMPORTANT: This class is intended to be subclassed <em>only</em> |
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37 * within the SWT implementation. |
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38 * </p> |
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39 * |
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40 * @see <a href="http://www.eclipse.org/swt/snippets/#directorydialog">DirectoryDialog snippets</a> |
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41 * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample, Dialog tab</a> |
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42 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
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43 */ |
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44 |
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45 public class DirectoryDialog : Dialog { |
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46 static String message = ""; |
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47 static String filterPath = ""; //$NON-NLS-1$//$NON-NLS-2$ |
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48 static String directoryPath; |
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49 |
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50 /** |
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51 * Constructs a new instance of this class given only its parent. |
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52 * |
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53 * @param parent a shell which will be the parent of the new instance |
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54 * |
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55 * @exception IllegalArgumentException <ul> |
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56 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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57 * </ul> |
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58 * @exception SWTException <ul> |
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59 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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60 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
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61 * </ul> |
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62 */ |
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63 public this (Shell parent) { |
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64 this (parent, SWT.APPLICATION_MODAL); |
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65 } |
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66 |
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67 /** |
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68 * Constructs a new instance of this class given its parent |
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69 * and a style value describing its behavior and appearance. |
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70 * <p> |
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71 * The style value is either one of the style constants defined in |
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72 * class <code>SWT</code> which is applicable to instances of this |
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73 * class, or must be built by <em>bitwise OR</em>'ing together |
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74 * (that is, using the <code>int</code> "|" operator) two or more |
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75 * of those <code>SWT</code> style constants. The class description |
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76 * lists the style constants that are applicable to the class. |
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77 * Style bits are also inherited from superclasses. |
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78 * </p> |
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79 * |
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80 * @param parent a shell which will be the parent of the new instance |
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81 * @param style the style of dialog to construct |
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82 * |
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83 * @exception IllegalArgumentException <ul> |
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84 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
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85 * </ul> |
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86 * @exception SWTException <ul> |
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87 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
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88 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
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89 * </ul> |
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90 */ |
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91 public this (Shell parent, int style) { |
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92 super (parent, checkStyle (parent, style)); |
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93 checkSubclass (); |
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94 } |
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95 |
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96 extern(Windows)static int BrowseCallbackProc (HWND hwnd, uint uMsg, int lParam, int lpData) { |
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97 DirectoryDialog pThis = cast(DirectoryDialog)cast(void*)lpData; |
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98 switch (uMsg) { |
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99 case OS.BFFM_INITIALIZED: |
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100 if (pThis.filterPath !is null && pThis.filterPath.length !is 0) { |
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101 /* Use the character encoding for the default locale */ |
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102 TCHAR[] buffer = StrToTCHARs (0, pThis.filterPath.replace ('/', '\\'), true); |
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103 OS.SendMessage (hwnd, OS.BFFM_SETSELECTION, 1, buffer.ptr); |
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104 } |
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105 if (pThis.title !is null && pThis.title.length !is 0) { |
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106 /* Use the character encoding for the default locale */ |
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107 TCHAR[] buffer = StrToTCHARs (0, pThis.title, true); |
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108 OS.SetWindowText (hwnd, buffer.ptr); |
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109 } |
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110 break; |
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111 case OS.BFFM_VALIDATEFAILEDA: |
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112 case OS.BFFM_VALIDATEFAILEDW: |
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113 /* Use the character encoding for the default locale */ |
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114 // int length = OS.IsUnicode ? OS.wcslen (lParam) : OS.strlen (lParam); |
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115 // TCHAR buffer = new TCHAR (0, length); |
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116 // int byteCount = buffer.length * TCHAR.sizeof; |
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117 // OS.MoveMemory (buffer, lParam, byteCount); |
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118 // directoryPath = buffer.toString (0, length); |
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119 pThis.directoryPath = TCHARzToStr( cast(TCHAR*)lParam ); |
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120 break; |
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121 default: |
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122 } |
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123 return 0; |
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124 } |
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125 |
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126 /** |
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127 * Returns the path which the dialog will use to filter |
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128 * the directories it shows. |
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129 * |
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130 * @return the filter path |
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131 * |
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132 * @see #setFilterPath |
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133 */ |
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134 public String getFilterPath () { |
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135 return filterPath; |
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136 } |
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137 |
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138 /** |
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139 * Returns the dialog's message, which is a description of |
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140 * the purpose for which it was opened. This message will be |
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141 * visible on the dialog while it is open. |
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142 * |
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143 * @return the message |
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144 */ |
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145 public String getMessage () { |
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146 return message; |
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147 } |
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148 |
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149 /** |
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150 * Makes the dialog visible and brings it to the front |
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151 * of the display. |
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152 * |
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153 * @return a string describing the absolute path of the selected directory, |
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154 * or null if the dialog was cancelled or an error occurred |
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155 * |
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156 * @exception SWTException <ul> |
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157 * <li>ERROR_WIDGET_DISPOSED - if the dialog has been disposed</li> |
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158 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the dialog</li> |
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159 * </ul> |
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160 */ |
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161 public String open () { |
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162 if (OS.IsWinCE) SWT.error (SWT.ERROR_NOT_IMPLEMENTED); |
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163 |
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164 auto hHeap = OS.GetProcessHeap (); |
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165 |
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166 /* Get the owner HWND for the dialog */ |
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167 HWND hwndOwner; |
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168 if (parent !is null) hwndOwner = parent.handle; |
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169 |
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170 /* Copy the message to OS memory */ |
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171 TCHAR* lpszTitle; |
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172 if (message.length !is 0) { |
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173 String string = message; |
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174 if (string.indexOf ('&') !is -1) { |
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175 int length = string.length; |
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176 char [] buffer = new char [length * 2]; |
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177 int index = 0; |
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178 for (int i=0; i<length; i++) { |
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179 char ch = string.charAt (i); |
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180 if (ch is '&') buffer [index++] = '&'; |
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181 buffer [index++] = ch; |
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182 } |
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183 // string = new String (buffer, 0, index); |
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184 } |
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185 /* Use the character encoding for the default locale */ |
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186 TCHAR[] buffer = StrToTCHARs (0, string, true); |
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187 int byteCount = buffer.length * TCHAR.sizeof; |
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188 lpszTitle = cast(TCHAR*)OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, byteCount); |
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189 OS.MoveMemory (lpszTitle, buffer.ptr, byteCount); |
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190 } |
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191 |
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192 /* Create the BrowseCallbackProc */ |
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193 /+ Callback callback = new Callback (this, "BrowseCallbackProc", 4); //$NON-NLS-1$ |
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194 int lpfn = callback.getAddress ();+/ |
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195 BFFCALLBACK lpfn = &BrowseCallbackProc; |
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196 if (lpfn is null) SWT.error (SWT.ERROR_NO_MORE_CALLBACKS); |
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197 |
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198 /* Make the parent shell be temporary modal */ |
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199 Dialog oldModal = null; |
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200 Display display = parent.getDisplay (); |
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201 if ((style & (SWT.APPLICATION_MODAL | SWT.SYSTEM_MODAL)) !is 0) { |
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202 oldModal = display.getModalDialog (); |
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203 display.setModalDialog (this); |
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204 } |
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205 |
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206 directoryPath = null; |
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207 BROWSEINFO lpbi; |
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208 lpbi.hwndOwner = hwndOwner; |
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209 lpbi.lpszTitle = lpszTitle; |
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210 lpbi.ulFlags = OS.BIF_NEWDIALOGSTYLE | OS.BIF_RETURNONLYFSDIRS | OS.BIF_EDITBOX | OS.BIF_VALIDATE; |
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211 lpbi.lpfn = lpfn; |
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212 lpbi.lParam = cast(int)cast(void*)this; |
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213 /* |
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214 * Bug in Windows. On some hardware configurations, SHBrowseForFolder() |
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215 * causes warning dialogs with the message "There is no disk in the drive |
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216 * Please insert a disk into \Device\Harddisk0\DR0". This is possibly |
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217 * caused by SHBrowseForFolder() calling internally GetVolumeInformation(). |
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218 * MSDN for GetVolumeInformation() says: |
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219 * |
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220 * "If you are attempting to obtain information about a floppy drive |
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221 * that does not have a floppy disk or a CD-ROM drive that does not |
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222 * have a compact disc, the system displays a message box asking the |
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223 * user to insert a floppy disk or a compact disc, respectively. |
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224 * To prevent the system from displaying this message box, call the |
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225 * SetErrorMode function with SEM_FAILCRITICALERRORS." |
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226 * |
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227 * The fix is to save and restore the error mode using SetErrorMode() |
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228 * with the SEM_FAILCRITICALERRORS flag around SHBrowseForFolder(). |
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229 */ |
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230 int oldErrorMode = OS.SetErrorMode (OS.SEM_FAILCRITICALERRORS); |
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231 |
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232 /* |
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233 * Bug in Windows. When a WH_MSGFILTER hook is used to run code |
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234 * during the message loop for SHBrowseForFolder(), running code |
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235 * in the hook can cause a GP. Specifically, SetWindowText() |
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236 * for static controls seemed to make the problem happen. |
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237 * The fix is to disable async messages while the directory |
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238 * dialog is open. |
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239 * |
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240 * NOTE: This only happens in versions of the comctl32.dll |
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241 * earlier than 6.0. |
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242 */ |
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243 bool oldRunMessages = display.runMessages; |
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244 if (OS.COMCTL32_MAJOR < 6) display.runMessages = false; |
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245 ITEMIDLIST* lpItemIdList = OS.SHBrowseForFolder (&lpbi); |
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246 if (OS.COMCTL32_MAJOR < 6) display.runMessages = oldRunMessages; |
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247 OS.SetErrorMode (oldErrorMode); |
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248 |
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249 /* Clear the temporary dialog modal parent */ |
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250 if ((style & (SWT.APPLICATION_MODAL | SWT.SYSTEM_MODAL)) !is 0) { |
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251 display.setModalDialog (oldModal); |
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252 } |
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253 |
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254 bool success = lpItemIdList !is null; |
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255 if (success) { |
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256 /* Use the character encoding for the default locale */ |
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257 TCHAR[OS.MAX_PATH] buffer; |
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258 if (OS.SHGetPathFromIDList (lpItemIdList, buffer.ptr)) { |
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259 directoryPath = TCHARzToStr (buffer.ptr); |
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260 filterPath = directoryPath; |
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261 } |
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262 } |
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263 |
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264 /* Free the BrowseCallbackProc */ |
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265 // callback.dispose (); |
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266 |
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267 /* Free the OS memory */ |
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268 if (lpszTitle !is null) OS.HeapFree (hHeap, 0, lpszTitle); |
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269 |
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270 /* Free the pointer to the ITEMIDLIST */ |
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271 LPVOID ppMalloc; |
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272 if (OS.SHGetMalloc (&ppMalloc) is OS.S_OK) { |
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273 /* void Free (struct IMalloc *this, void *pv); */ |
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274 OS.VtblCall (5, ppMalloc , cast(int)lpItemIdList); |
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275 } |
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276 |
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277 /* |
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278 * This code is intentionally commented. On some |
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279 * platforms, the owner window is repainted right |
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280 * away when a dialog window exits. This behavior |
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281 * is currently unspecified. |
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282 */ |
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283 // if (hwndOwner !is 0) OS.UpdateWindow (hwndOwner); |
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284 |
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285 /* Return the directory path */ |
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286 if (!success) return null; |
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287 return directoryPath; |
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288 } |
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289 |
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290 /** |
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291 * Sets the path that the dialog will use to filter |
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292 * the directories it shows to the argument, which may |
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293 * be null. If the string is null, then the operating |
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294 * system's default filter path will be used. |
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295 * <p> |
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296 * Note that the path string is platform dependent. |
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297 * For convenience, either '/' or '\' can be used |
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298 * as a path separator. |
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299 * </p> |
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300 * |
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301 * @param string the filter path |
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302 */ |
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303 public void setFilterPath (String string) { |
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304 filterPath = string; |
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305 } |
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306 |
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307 /** |
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308 * Sets the dialog's message, which is a description of |
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309 * the purpose for which it was opened. This message will be |
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310 * visible on the dialog while it is open. |
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311 * |
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312 * @param string the message |
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313 * |
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314 */ |
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315 public void setMessage (String string) { |
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316 // SWT extension: allow null string |
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317 //if (string is null) error (SWT.ERROR_NULL_ARGUMENT); |
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318 message = string; |
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319 } |
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320 |
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321 } |