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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.MessageBox;
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14
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15 import java.lang.all;
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16
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17
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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.gtk.OS;
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22 import org.eclipse.swt.widgets.Dialog;
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23 import org.eclipse.swt.widgets.Shell;
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24 import org.eclipse.swt.widgets.Display;
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25
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26
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27 /**
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28 * Instances of this class are used to inform or warn the user.
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29 * <dl>
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30 * <dt><b>Styles:</b></dt>
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31 * <dd>ICON_ERROR, ICON_INFORMATION, ICON_QUESTION, ICON_WARNING, ICON_WORKING</dd>
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32 * <dd>OK, OK | CANCEL</dd>
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33 * <dd>YES | NO, YES | NO | CANCEL</dd>
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34 * <dd>RETRY | CANCEL</dd>
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35 * <dd>ABORT | RETRY | IGNORE</dd>
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36 * <dt><b>Events:</b></dt>
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37 * <dd>(none)</dd>
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38 * </dl>
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39 * <p>
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40 * Note: Only one of the styles ICON_ERROR, ICON_INFORMATION, ICON_QUESTION,
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41 * ICON_WARNING and ICON_WORKING may be specified.
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42 * </p><p>
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43 * IMPORTANT: This class is intended to be subclassed <em>only</em>
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44 * within the SWT implementation.
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45 * </p>
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46 *
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47 * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample, Dialog tab</a>
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48 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
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49 */
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50 public class MessageBox : Dialog {
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51
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52 alias Dialog.checkStyle checkStyle;
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53
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54 String message = "";
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55 GtkWidget* handle;
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56 private bool allowNullParent = false;
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57 /**
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58 * Constructs a new instance of this class given only its parent.
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59 *
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60 * @param parent a shell which will be the parent of the new instance
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61 *
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62 * @exception IllegalArgumentException <ul>
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63 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
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64 * </ul>
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65 * @exception SWTException <ul>
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66 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
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67 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
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68 * </ul>
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69 */
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70 public this (Shell parent) {
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71 this (parent, SWT.OK | SWT.ICON_INFORMATION | SWT.APPLICATION_MODAL);
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72 }
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73
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74 /**
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75 * Constructs a new instance of this class given its parent
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76 * and a style value describing its behavior and appearance.
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77 * <p>
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78 * The style value is either one of the style constants defined in
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79 * class <code>SWT</code> which is applicable to instances of this
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80 * class, or must be built by <em>bitwise OR</em>'ing together
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81 * (that is, using the <code>int</code> "|" operator) two or more
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82 * of those <code>SWT</code> style constants. The class description
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83 * lists the style constants that are applicable to the class.
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84 * Style bits are also inherited from superclasses.
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85 *
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86 * @param parent a shell which will be the parent of the new instance
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87 * @param style the style of dialog to construct
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88 *
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89 * @exception IllegalArgumentException <ul>
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90 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
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91 * </ul>
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92 * @exception SWTException <ul>
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93 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
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94 * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
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95 * </ul>
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96 */
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97 public this (Shell parent, int style) {
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98 super (parent, checkStyle (parent, checkStyle (style)));
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99 checkSubclass ();
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100 }
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101
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102 /++
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103 + SWT extension, a MessageBox with no parent
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104 +/
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105 public this (int style) {
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106 allowNullParent = true;
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107 super (parent, checkStyle (parent, checkStyle (style)));
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108 checkSubclass ();
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109 }
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110 // PORT
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111 // actually, the parent can be null
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112 override void checkParent (Shell parent){
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113 if( !allowNullParent ){
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114 super.checkParent( parent );
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115 }
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116 }
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117
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118 /**
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119 * Returns the dialog's message, or an empty string if it does not have one.
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120 * The message is a description of the purpose for which the dialog was opened.
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121 * This message will be visible in the dialog while it is open.
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122 *
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123 * @return the message
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124 */
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125 public String getMessage () {
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126 return message;
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127 }
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128
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129 /**
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130 * Sets the dialog's message, which is a description of
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131 * the purpose for which it was opened. This message will be
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132 * visible on the dialog while it is open.
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133 *
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134 * @param string the message
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135 *
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136 */
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137 public void setMessage (String string) {
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138 // SWT extension: allow null for zero length string
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139 //if (string is null) error (SWT.ERROR_NULL_ARGUMENT);
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140 message = string;
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141 }
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142
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143 /**
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144 * Makes the dialog visible and brings it to the front
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145 * of the display.
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146 *
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147 * @return the ID of the button that was selected to dismiss the
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148 * message box (e.g. SWT.OK, SWT.CANCEL, etc.)
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149 *
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150 * @exception SWTException <ul>
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151 * <li>ERROR_WIDGET_DISPOSED - if the dialog has been disposed</li>
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152 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the dialog</li>
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153 * </ul>
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154 */
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155 public int open () {
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156 GtkWidget* parentHandle = (parent !is null) ? parent.topHandle() : null;
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157 int dialogFlags = OS.GTK_DIALOG_DESTROY_WITH_PARENT;
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158 if ((style & (SWT.PRIMARY_MODAL | SWT.APPLICATION_MODAL | SWT.SYSTEM_MODAL)) !is 0) {
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159 dialogFlags |= OS.GTK_DIALOG_MODAL;
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160 }
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161 int messageType = OS.GTK_MESSAGE_INFO;
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162 if ((style & (SWT.ICON_WARNING)) !is 0) messageType = OS.GTK_MESSAGE_WARNING;
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163 if ((style & (SWT.ICON_QUESTION)) !is 0) messageType = OS.GTK_MESSAGE_QUESTION;
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164 if ((style & (SWT.ICON_ERROR)) !is 0) messageType = OS.GTK_MESSAGE_ERROR;
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165
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166 char* buffer = toStringz( fixPercent (message));
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167 handle = cast(GtkWidget*)OS.gtk_message_dialog_new(parentHandle, dialogFlags, messageType, 0, buffer);
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168 if (handle is null) SWT.error(SWT.ERROR_NO_HANDLES);
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169 if (parentHandle !is null) {
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170 auto pixbufs = OS.gtk_window_get_icon_list (parentHandle);
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171 if (pixbufs !is null) {
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172 OS.gtk_window_set_icon_list (handle, pixbufs);
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173 OS.g_list_free (pixbufs);
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174 }
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175 }
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176 createButtons();
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177 buffer = toStringz(title);
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178 OS.gtk_window_set_title(handle,buffer);
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179 Display display = parent !is null ? parent.getDisplay (): Display.getCurrent ();
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180 display.addIdleProc ();
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181 Dialog oldModal = null;
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182 if (OS.gtk_window_get_modal (handle)) {
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183 oldModal = display.getModalDialog ();
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184 display.setModalDialog (this);
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185 }
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186 int signalId = 0;
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187 int /*long*/ hookId = 0;
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188 CallbackData emissionData;
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189 emissionData.display = display;
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190 emissionData.data = handle;
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191 if ((style & SWT.RIGHT_TO_LEFT) !is 0) {
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192 signalId = OS.g_signal_lookup (OS.map.ptr, OS.GTK_TYPE_WIDGET());
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193 hookId = OS.g_signal_add_emission_hook (signalId, 0, &Display.emissionFunc, &emissionData, null);
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194 }
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195 int response = OS.gtk_dialog_run (handle);
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196 if ((style & SWT.RIGHT_TO_LEFT) !is 0) {
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197 OS.g_signal_remove_emission_hook (signalId, hookId);
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198 }
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199 if (OS.gtk_window_get_modal (handle)) {
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200 display.setModalDialog (oldModal);
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201 }
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202 display.removeIdleProc ();
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203 OS.gtk_widget_destroy (handle);
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204 return response;
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205 }
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206
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207 private void createButtons() {
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208 if ((style & SWT.OK) !is 0) OS.gtk_dialog_add_button(handle, "gtk-ok".ptr, SWT.OK);
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209 if ((style & SWT.CANCEL) !is 0) OS.gtk_dialog_add_button(handle, "gtk-cancel".ptr, SWT.CANCEL);
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210 if ((style & SWT.YES) !is 0) OS.gtk_dialog_add_button(handle, "gtk-yes".ptr, SWT.YES);
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211 if ((style & SWT.NO) !is 0) OS.gtk_dialog_add_button(handle, "gtk-no".ptr, SWT.NO);
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212 if ((style & SWT.ABORT) !is 0) OS.gtk_dialog_add_button(handle, toStringz( SWT.getMessage("SWT_Abort")), SWT.ABORT);
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213 if ((style & SWT.RETRY) !is 0) OS.gtk_dialog_add_button(handle, toStringz( SWT.getMessage("SWT_Retry")), SWT.RETRY);
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214 if ((style & SWT.IGNORE) !is 0) OS.gtk_dialog_add_button(handle, toStringz( SWT.getMessage("SWT_Ignore")), SWT.IGNORE);
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215 }
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216
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217 private static int checkStyle (int style) {
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218 int mask = (SWT.YES | SWT.NO | SWT.OK | SWT.CANCEL | SWT.ABORT | SWT.RETRY | SWT.IGNORE);
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219 int bits = style & mask;
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220 if (bits is SWT.OK || bits is SWT.CANCEL || bits is (SWT.OK | SWT.CANCEL)) return style;
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221 if (bits is SWT.YES || bits is SWT.NO || bits is (SWT.YES | SWT.NO) || bits is (SWT.YES | SWT.NO | SWT.CANCEL)) return style;
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222 if (bits is (SWT.RETRY | SWT.CANCEL) || bits is (SWT.ABORT | SWT.RETRY | SWT.IGNORE)) return style;
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223 style = (style & ~mask) | SWT.OK;
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224 return style;
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225 }
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226
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227 char[] fixPercent (String string) {
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228 int i = 0, j = 0;
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229 char [] result = new char[ string.length * 2 ];
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230 while (i < string.length) {
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231 switch (string [i]) {
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232 case '%':
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233 result [j++] = '%';
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234 break;
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235 default:
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236 }
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237 result [j++] = string [i++];
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238 }
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239 return result[ 0 .. j ];
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240 }
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241
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242
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243 /++
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244 + SWT extension
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245 +/
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246 public static int showMessageBox(String str, String title, Shell shell, int style) {
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247 MessageBox msgBox = (shell is null ) ? new MessageBox( style ) : new MessageBox(shell, style);
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248 msgBox.setMessage(str);
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249 if(title !is null){
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250 msgBox.setText(title);
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251 }
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252 return msgBox.open();
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253 }
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254
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255 /// SWT extension
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256 public static int showInfo(String str, String title = null, Shell shell = null) {
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257 return showMessageBox( str, title, shell, SWT.OK | SWT.ICON_INFORMATION );
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258 }
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259 /// SWT extension
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260 alias showInfo showInformation;
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261
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262 /// SWT extension
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263 public static int showWarning(String str, String title = null, Shell shell = null) {
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264 return showMessageBox( str, title, shell, SWT.OK | SWT.ICON_WARNING );
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265 }
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266 /// SWT extension
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267 public static int showError(String str, String title = null, Shell shell = null) {
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268 return showMessageBox( str, title, shell, SWT.OK | SWT.ICON_ERROR );
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269 }
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270
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271 }
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