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annotate dwt/browser/MozillaDelegate.d @ 286:44258e0b6687

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More fixes for xpcom
author John Reimer<terminal.node@gmail.com>
date Tue, 05 Aug 2008 10:11:58 -0700
parents 93409d9838c5
children 3f4a5c7d138f
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1 /*******************************************************************************
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2 * Copyright (c) 2003, 2007 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 * John Reimer <terminal.node@gmail.com>
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12 *******************************************************************************/
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13 module dwt.browser.MozillaDelegate;
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14
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15 import dwt.dwthelper.utils;
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16
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17 import dwt.DWT;
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18 import dwt.internal.Callback;
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19 import dwt.internal.Converter;
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20 import dwt.internal.gtk.GdkEvent;
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21 import dwt.internal.gtk.OS;
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22 import dwt.widgets.Display;
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23 import dwt.widgets.Event;
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24 import dwt.widgets.Listener;
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25 import dwt.widgets.Widget;
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26
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27 class MozillaDelegate {
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28 Browser browser;
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29 gpointer mozillaHandle;
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30 GtkWidget* embedHandle;
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31 bool hasFocus;
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32 Listener listener;
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33 //static Callback eventCallback;
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34 // static int /*long*/ eventProc;
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35 static const gpointer STOP_PROPOGATE = cast(gpointer)1;
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36
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37 static bool IsLinux;
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38 static this {
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39 String osName = System.getProperty ("os.name"); //$NON-NLS-1$
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40 IsLinux = tango.text.Util.containsPattern(osName, "linux"); //$NON-NLS-1$
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41 }
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42
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43 this (Browser browser) {
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44 super ();
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45 if (!IsLinux) {
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46 browser.dispose ();
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47 DWT.error (DWT.ERROR_NO_HANDLES, null, " [Unsupported platform]"); //$NON-NLS-1$
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48 }
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49 this.browser = browser;
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50 }
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51
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52 static extern(C) int eventProc (GtkWidget* handle, GdkEvent* gdkEvent, gpointer pointer) {
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53 GtkWidget* parent = OS.gtk_widget_get_parent (handle);
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54 parent = OS.gtk_widget_get_parent (parent);
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55 if (parent is null) return 0;
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56 Widget widget = Display.getCurrent ().findWidget (parent);
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57 if (widget !is null && (cast(Browser)widget !is null) {
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58 return (cast(Mozilla)(cast(Browser)widget).webBrowser).mozDelegate.gtk_event (handle, gdkEvent, pointer);
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59 }
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60 return 0;
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61 }
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62
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63 static Browser findBrowser (GtkWidget* handle) {
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64 /*
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65 * Note. On GTK, Mozilla is embedded into a GtkHBox handle
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66 * and not directly into the parent Composite handle.
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67 */
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68 GtkWidget* parent = OS.gtk_widget_get_parent (handle);
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69 Display display = Display.getCurrent ();
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70 return cast(Browser)display.findWidget (parent);
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71 }
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72 /*
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73 static char[] mbcsToWcs (String codePage, byte [] buffer) {
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74 return Converter.mbcsToWcs (codePage, buffer);
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75 }
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76
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77 static byte[] wcsToMbcs (String codePage, String string, bool terminate) {
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78 return Converter.wcsToMbcs (codePage, string, terminate);
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79 }
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80 */
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81 GtkWidget* getHandle () {
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82 /*
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83 * Bug in Mozilla Linux GTK. Embedding Mozilla into a GtkFixed
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84 * handle causes problems with some Mozilla plug-ins. For some
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85 * reason, the Flash plug-in causes the child of the GtkFixed
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86 * handle to be resized to 1 when the Flash document is loaded.
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87 * That could be due to gtk_container_resize_children being called
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88 * by Mozilla - or one of its plug-ins - on the GtkFixed handle,
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89 * causing the child of the GtkFixed handle to be resized to 1.
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90 * The workaround is to embed Mozilla into a GtkHBox handle.
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91 */
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92 embedHandle = OS.gtk_hbox_new (false, 0);
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93 OS.gtk_container_add (browser.handle, embedHandle);
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94 OS.gtk_widget_show (embedHandle);
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95 return embedHandle;
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96 }
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97
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98 String getLibraryName () {
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99 return "libxpcom.so"; //$NON-NLS-1$
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100 }
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101
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102 /*
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103 String getSWTInitLibraryName () {
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104 return "swt-xpcominit"; //$NON-NLS-1$
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105 }
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106 */
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107
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108 int gtk_event (GtkWidget* handle, GdkEvent* event, gpointer pointer) {
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109 if (event.type is OS.GDK_BUTTON_PRESS) {
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110 if (!hasFocus) browser.setFocus ();
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111 }
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112
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113 /*
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114 * Stop the propagation of events that are not consumed by Mozilla, before
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115 * they reach the parent embedder. These event have already been received.
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116 */
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117 if (pointer is STOP_PROPOGATE) return 1;
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118 return 0;
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119 }
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120
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121 void handleFocus () {
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122 if (hasFocus) return;
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123 hasFocus = true;
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124 listener = new Listener () {
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125 public void handleEvent (Event event) {
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126 if (event.widget is browser) return;
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127 (cast(Mozilla)(browser.webBrowser)).Deactivate ();
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128 hasFocus = false;
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129 browser.getDisplay ().removeFilter (DWT.FocusIn, this);
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130 browser.getShell ().removeListener (DWT.Deactivate, this);
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131 listener = null;
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132 }
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133 };
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134 browser.getDisplay ().addFilter (DWT.FocusIn, listener);
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135 browser.getShell ().addListener (DWT.Deactivate, listener);
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136 }
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137
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138 void handleMouseDown () {
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139 int shellStyle = browser.getShell ().getStyle ();
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140 if ((shellStyle & DWT.ON_TOP) !is 0 && (((shellStyle & DWT.NO_FOCUS) is 0) || ((browser.getStyle () & DWT.NO_FOCUS) is 0))) {
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141 browser.getDisplay ().asyncExec (new Runnable () {
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142 public void run () {
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143 if (browser is null || browser.isDisposed ()) return;
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144 (cast(Mozilla)(browser.webBrowser)).Activate ();
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145 }
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146 });
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147 }
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148 }
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149
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150 bool hookEnterExit () {
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151 return false;
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152 }
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153
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154 void init () { /*
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155 if (eventCallback is null) {
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156 eventCallback = new Callback (getClass (), "eventProc", 3); //$NON-NLS-1$
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157 eventProc = eventCallback.getAddress ();
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158 if (eventProc is null) {
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159 browser.dispose ();
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160 Mozilla.error (DWT.ERROR_NO_MORE_CALLBACKS);
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161 }
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162 } */
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163
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164 /*
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165 * Feature in Mozilla. GtkEvents such as key down, key pressed may be consumed
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166 * by Mozilla and never be received by the parent embedder. The workaround
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167 * is to find the top Mozilla gtk widget that receives all the Mozilla GtkEvents,
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168 * i.e. the first child of the parent embedder. Then hook event callbacks and
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169 * forward the event to the parent embedder before Mozilla received and consumed
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170 * them.
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171 */
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172 GList* list = OS.gtk_container_get_children (embedHandle);
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173 if (list !is null) {
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174 mozillaHandle = OS.g_list_data (list);
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175 OS.g_list_free (list);
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176
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177 if (mozillaHandle !is null) {
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178 /* Note. Callback to get events before Mozilla receives and consumes them. */
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179 OS.g_signal_connect (mozillaHandle, OS.event, cast(GCallback)&eventProc, null);
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180
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181 /*
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182 * Note. Callback to get the events not consumed by Mozilla - and to block
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183 * them so that they don't get propagated to the parent handle twice.
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184 * This hook is set after Mozilla and is therefore called after Mozilla's
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185 * handler because GTK dispatches events in their order of registration.
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186 */
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187 OS.g_signal_connect (mozillaHandle, OS.key_press_event, cast(GCallback)&eventProc, STOP_PROPOGATE);
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188 OS.g_signal_connect (mozillaHandle, OS.key_release_event, cast(GCallback)&eventProc, STOP_PROPOGATE);
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189 OS.g_signal_connect (mozillaHandle, OS.button_press_event, cast(GCallback)&eventProc, STOP_PROPOGATE);
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190 }
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191 }
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192 }
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193
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194 bool needsSpinup () {
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195 return true;
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196 }
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197
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198 void onDispose (int /*long*/ embedHandle) {
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199 if (listener !is null) {
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200 browser.getDisplay ().removeFilter (DWT.FocusIn, listener);
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201 browser.getShell ().removeListener (DWT.Deactivate, listener);
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202 listener = null;
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203 }
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204 browser = null;
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205 }
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206
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207 void setSize (GtkWidget* embedHandle, int width, int height) {
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208 OS.gtk_widget_set_size_request (embedHandle, width, height);
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209 }
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210
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211 }