| OLD | NEW |
|---|
| (Empty) |
| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "content/browser/renderer_host/gtk_key_bindings_handler.h" | |
| 6 | |
| 7 #include <gdk/gdkkeysyms.h> | |
| 8 | |
| 9 #include <string> | |
| 10 | |
| 11 #include "base/logging.h" | |
| 12 #include "base/strings/string_util.h" | |
| 13 #include "content/public/browser/native_web_keyboard_event.h" | |
| 14 | |
| 15 namespace content { | |
| 16 | |
| 17 GtkKeyBindingsHandler::GtkKeyBindingsHandler(GtkWidget* parent_widget) | |
| 18 : handler_(CreateNewHandler()) { | |
| 19 DCHECK(GTK_IS_FIXED(parent_widget)); | |
| 20 // We need add the |handler_| object into gtk widget hierarchy, so that | |
| 21 // gtk_bindings_activate_event() can find correct display and keymaps from | |
| 22 // the |handler_| object. | |
| 23 gtk_fixed_put(GTK_FIXED(parent_widget), handler_.get(), -1, -1); | |
| 24 } | |
| 25 | |
| 26 GtkKeyBindingsHandler::~GtkKeyBindingsHandler() { | |
| 27 handler_.Destroy(); | |
| 28 } | |
| 29 | |
| 30 bool GtkKeyBindingsHandler::Match(const NativeWebKeyboardEvent& wke, | |
| 31 EditCommands* edit_commands) { | |
| 32 if (wke.type == blink::WebInputEvent::Char || !wke.os_event) | |
| 33 return false; | |
| 34 | |
| 35 edit_commands_.clear(); | |
| 36 // If this key event matches a predefined key binding, corresponding signal | |
| 37 // will be emitted. | |
| 38 gtk_bindings_activate_event(GTK_OBJECT(handler_.get()), &wke.os_event->key); | |
| 39 | |
| 40 bool matched = !edit_commands_.empty(); | |
| 41 if (edit_commands) | |
| 42 edit_commands->swap(edit_commands_); | |
| 43 return matched; | |
| 44 } | |
| 45 | |
| 46 GtkWidget* GtkKeyBindingsHandler::CreateNewHandler() { | |
| 47 Handler* handler = | |
| 48 static_cast<Handler*>(g_object_new(HandlerGetType(), NULL)); | |
| 49 | |
| 50 handler->owner = this; | |
| 51 | |
| 52 // We don't need to show the |handler| object on screen, so set its size to | |
| 53 // zero. | |
| 54 gtk_widget_set_size_request(GTK_WIDGET(handler), 0, 0); | |
| 55 | |
| 56 // Prevents it from handling any events by itself. | |
| 57 gtk_widget_set_sensitive(GTK_WIDGET(handler), FALSE); | |
| 58 gtk_widget_set_events(GTK_WIDGET(handler), 0); | |
| 59 gtk_widget_set_can_focus(GTK_WIDGET(handler), TRUE); | |
| 60 | |
| 61 return GTK_WIDGET(handler); | |
| 62 } | |
| 63 | |
| 64 void GtkKeyBindingsHandler::EditCommandMatched( | |
| 65 const std::string& name, const std::string& value) { | |
| 66 edit_commands_.push_back(EditCommand(name, value)); | |
| 67 } | |
| 68 | |
| 69 void GtkKeyBindingsHandler::HandlerInit(Handler *self) { | |
| 70 self->owner = NULL; | |
| 71 } | |
| 72 | |
| 73 void GtkKeyBindingsHandler::HandlerClassInit(HandlerClass *klass) { | |
| 74 GtkTextViewClass* text_view_class = GTK_TEXT_VIEW_CLASS(klass); | |
| 75 GtkWidgetClass* widget_class = GTK_WIDGET_CLASS(klass); | |
| 76 | |
| 77 // Overrides all virtual methods related to editor key bindings. | |
| 78 text_view_class->backspace = BackSpace; | |
| 79 text_view_class->copy_clipboard = CopyClipboard; | |
| 80 text_view_class->cut_clipboard = CutClipboard; | |
| 81 text_view_class->delete_from_cursor = DeleteFromCursor; | |
| 82 text_view_class->insert_at_cursor = InsertAtCursor; | |
| 83 text_view_class->move_cursor = MoveCursor; | |
| 84 text_view_class->paste_clipboard = PasteClipboard; | |
| 85 text_view_class->set_anchor = SetAnchor; | |
| 86 text_view_class->toggle_overwrite = ToggleOverwrite; | |
| 87 widget_class->show_help = ShowHelp; | |
| 88 | |
| 89 // "move-focus", "move-viewport", "select-all" and "toggle-cursor-visible" | |
| 90 // have no corresponding virtual methods. Since glib 2.18 (gtk 2.14), | |
| 91 // g_signal_override_class_handler() is introduced to override a signal | |
| 92 // handler. | |
| 93 g_signal_override_class_handler("move-focus", | |
| 94 G_TYPE_FROM_CLASS(klass), | |
| 95 G_CALLBACK(MoveFocus)); | |
| 96 | |
| 97 g_signal_override_class_handler("move-viewport", | |
| 98 G_TYPE_FROM_CLASS(klass), | |
| 99 G_CALLBACK(MoveViewport)); | |
| 100 | |
| 101 g_signal_override_class_handler("select-all", | |
| 102 G_TYPE_FROM_CLASS(klass), | |
| 103 G_CALLBACK(SelectAll)); | |
| 104 | |
| 105 g_signal_override_class_handler("toggle-cursor-visible", | |
| 106 G_TYPE_FROM_CLASS(klass), | |
| 107 G_CALLBACK(ToggleCursorVisible)); | |
| 108 } | |
| 109 | |
| 110 GType GtkKeyBindingsHandler::HandlerGetType() { | |
| 111 static volatile gsize type_id_volatile = 0; | |
| 112 if (g_once_init_enter(&type_id_volatile)) { | |
| 113 GType type_id = g_type_register_static_simple( | |
| 114 GTK_TYPE_TEXT_VIEW, | |
| 115 g_intern_static_string("GtkKeyBindingsHandler"), | |
| 116 sizeof(HandlerClass), | |
| 117 reinterpret_cast<GClassInitFunc>(HandlerClassInit), | |
| 118 sizeof(Handler), | |
| 119 reinterpret_cast<GInstanceInitFunc>(HandlerInit), | |
| 120 static_cast<GTypeFlags>(0)); | |
| 121 g_once_init_leave(&type_id_volatile, type_id); | |
| 122 } | |
| 123 return type_id_volatile; | |
| 124 } | |
| 125 | |
| 126 GtkKeyBindingsHandler* GtkKeyBindingsHandler::GetHandlerOwner( | |
| 127 GtkTextView* text_view) { | |
| 128 Handler* handler = G_TYPE_CHECK_INSTANCE_CAST( | |
| 129 text_view, HandlerGetType(), Handler); | |
| 130 DCHECK(handler); | |
| 131 return handler->owner; | |
| 132 } | |
| 133 | |
| 134 void GtkKeyBindingsHandler::BackSpace(GtkTextView* text_view) { | |
| 135 GetHandlerOwner(text_view) | |
| 136 ->EditCommandMatched("DeleteBackward", std::string()); | |
| 137 } | |
| 138 | |
| 139 void GtkKeyBindingsHandler::CopyClipboard(GtkTextView* text_view) { | |
| 140 GetHandlerOwner(text_view)->EditCommandMatched("Copy", std::string()); | |
| 141 } | |
| 142 | |
| 143 void GtkKeyBindingsHandler::CutClipboard(GtkTextView* text_view) { | |
| 144 GetHandlerOwner(text_view)->EditCommandMatched("Cut", std::string()); | |
| 145 } | |
| 146 | |
| 147 void GtkKeyBindingsHandler::DeleteFromCursor( | |
| 148 GtkTextView* text_view, GtkDeleteType type, gint count) { | |
| 149 if (!count) | |
| 150 return; | |
| 151 | |
| 152 const char *commands[3] = { NULL, NULL, NULL }; | |
| 153 switch (type) { | |
| 154 case GTK_DELETE_CHARS: | |
| 155 commands[0] = (count > 0 ? "DeleteForward" : "DeleteBackward"); | |
| 156 break; | |
| 157 case GTK_DELETE_WORD_ENDS: | |
| 158 commands[0] = (count > 0 ? "DeleteWordForward" : "DeleteWordBackward"); | |
| 159 break; | |
| 160 case GTK_DELETE_WORDS: | |
| 161 if (count > 0) { | |
| 162 commands[0] = "MoveWordForward"; | |
| 163 commands[1] = "DeleteWordBackward"; | |
| 164 } else { | |
| 165 commands[0] = "MoveWordBackward"; | |
| 166 commands[1] = "DeleteWordForward"; | |
| 167 } | |
| 168 break; | |
| 169 case GTK_DELETE_DISPLAY_LINES: | |
| 170 commands[0] = "MoveToBeginningOfLine"; | |
| 171 commands[1] = "DeleteToEndOfLine"; | |
| 172 break; | |
| 173 case GTK_DELETE_DISPLAY_LINE_ENDS: | |
| 174 commands[0] = (count > 0 ? "DeleteToEndOfLine" : | |
| 175 "DeleteToBeginningOfLine"); | |
| 176 break; | |
| 177 case GTK_DELETE_PARAGRAPH_ENDS: | |
| 178 commands[0] = (count > 0 ? "DeleteToEndOfParagraph" : | |
| 179 "DeleteToBeginningOfParagraph"); | |
| 180 break; | |
| 181 case GTK_DELETE_PARAGRAPHS: | |
| 182 commands[0] = "MoveToBeginningOfParagraph"; | |
| 183 commands[1] = "DeleteToEndOfParagraph"; | |
| 184 break; | |
| 185 default: | |
| 186 // GTK_DELETE_WHITESPACE has no corresponding editor command. | |
| 187 return; | |
| 188 } | |
| 189 | |
| 190 GtkKeyBindingsHandler* owner = GetHandlerOwner(text_view); | |
| 191 if (count < 0) | |
| 192 count = -count; | |
| 193 for (; count > 0; --count) { | |
| 194 for (const char* const* p = commands; *p; ++p) | |
| 195 owner->EditCommandMatched(*p, std::string()); | |
| 196 } | |
| 197 } | |
| 198 | |
| 199 void GtkKeyBindingsHandler::InsertAtCursor(GtkTextView* text_view, | |
| 200 const gchar* str) { | |
| 201 if (str && *str) | |
| 202 GetHandlerOwner(text_view)->EditCommandMatched("InsertText", str); | |
| 203 } | |
| 204 | |
| 205 void GtkKeyBindingsHandler::MoveCursor( | |
| 206 GtkTextView* text_view, GtkMovementStep step, gint count, | |
| 207 gboolean extend_selection) { | |
| 208 if (!count) | |
| 209 return; | |
| 210 | |
| 211 std::string command; | |
| 212 switch (step) { | |
| 213 case GTK_MOVEMENT_LOGICAL_POSITIONS: | |
| 214 command = (count > 0 ? "MoveForward" : "MoveBackward"); | |
| 215 break; | |
| 216 case GTK_MOVEMENT_VISUAL_POSITIONS: | |
| 217 command = (count > 0 ? "MoveRight" : "MoveLeft"); | |
| 218 break; | |
| 219 case GTK_MOVEMENT_WORDS: | |
| 220 command = (count > 0 ? "MoveWordRight" : "MoveWordLeft"); | |
| 221 break; | |
| 222 case GTK_MOVEMENT_DISPLAY_LINES: | |
| 223 command = (count > 0 ? "MoveDown" : "MoveUp"); | |
| 224 break; | |
| 225 case GTK_MOVEMENT_DISPLAY_LINE_ENDS: | |
| 226 command = (count > 0 ? "MoveToEndOfLine" : "MoveToBeginningOfLine"); | |
| 227 break; | |
| 228 case GTK_MOVEMENT_PARAGRAPH_ENDS: | |
| 229 command = (count > 0 ? "MoveToEndOfParagraph" : | |
| 230 "MoveToBeginningOfParagraph"); | |
| 231 break; | |
| 232 case GTK_MOVEMENT_PAGES: | |
| 233 command = (count > 0 ? "MovePageDown" : "MovePageUp"); | |
| 234 break; | |
| 235 case GTK_MOVEMENT_BUFFER_ENDS: | |
| 236 command = (count > 0 ? "MoveToEndOfDocument" : | |
| 237 "MoveToBeginningOfDocument"); | |
| 238 break; | |
| 239 default: | |
| 240 // GTK_MOVEMENT_PARAGRAPHS and GTK_MOVEMENT_HORIZONTAL_PAGES have | |
| 241 // no corresponding editor commands. | |
| 242 return; | |
| 243 } | |
| 244 | |
| 245 GtkKeyBindingsHandler* owner = GetHandlerOwner(text_view); | |
| 246 if (extend_selection) | |
| 247 command.append("AndModifySelection"); | |
| 248 if (count < 0) | |
| 249 count = -count; | |
| 250 for (; count > 0; --count) | |
| 251 owner->EditCommandMatched(command, std::string()); | |
| 252 } | |
| 253 | |
| 254 void GtkKeyBindingsHandler::MoveViewport( | |
| 255 GtkTextView* text_view, GtkScrollStep step, gint count) { | |
| 256 // Not supported by webkit. | |
| 257 } | |
| 258 | |
| 259 void GtkKeyBindingsHandler::PasteClipboard(GtkTextView* text_view) { | |
| 260 GetHandlerOwner(text_view)->EditCommandMatched("Paste", std::string()); | |
| 261 } | |
| 262 | |
| 263 void GtkKeyBindingsHandler::SelectAll(GtkTextView* text_view, gboolean select) { | |
| 264 if (select) | |
| 265 GetHandlerOwner(text_view)->EditCommandMatched("SelectAll", std::string()); | |
| 266 else | |
| 267 GetHandlerOwner(text_view)->EditCommandMatched("Unselect", std::string()); | |
| 268 } | |
| 269 | |
| 270 void GtkKeyBindingsHandler::SetAnchor(GtkTextView* text_view) { | |
| 271 GetHandlerOwner(text_view)->EditCommandMatched("SetMark", std::string()); | |
| 272 } | |
| 273 | |
| 274 void GtkKeyBindingsHandler::ToggleCursorVisible(GtkTextView* text_view) { | |
| 275 // Not supported by webkit. | |
| 276 } | |
| 277 | |
| 278 void GtkKeyBindingsHandler::ToggleOverwrite(GtkTextView* text_view) { | |
| 279 // Not supported by webkit. | |
| 280 } | |
| 281 | |
| 282 gboolean GtkKeyBindingsHandler::ShowHelp(GtkWidget* widget, | |
| 283 GtkWidgetHelpType arg1) { | |
| 284 // Just for disabling the default handler. | |
| 285 return FALSE; | |
| 286 } | |
| 287 | |
| 288 void GtkKeyBindingsHandler::MoveFocus(GtkWidget* widget, | |
| 289 GtkDirectionType arg1) { | |
| 290 // Just for disabling the default handler. | |
| 291 } | |
| 292 | |
| 293 } // namespace content | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 231733005:
Delete the GTK+ port of Chrome. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src