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 "ui/views/controls/webview/unhandled_keyboard_event_handler.h" 6 7 #include "base/logging.h" 8 #include "content/public/browser/native_web_keyboard_event.h" 9 #include "ui/events/event.h" 10 #include "ui/views/focus/focus_manager.h" 11 12 using content::NativeWebKeyboardEvent; 13 14 namespace views { 15 16 UnhandledKeyboardEventHandler::UnhandledKeyboardEventHandler() { 17 ignore_next_char_event_ = false; 18 } 19 20 void UnhandledKeyboardEventHandler::HandleKeyboardEvent( 21 const NativeWebKeyboardEvent& event, 22 FocusManager* focus_manager) { 23 if (!focus_manager) { 24 NOTREACHED(); 25 return; 26 } 27 // Previous calls to TranslateMessage can generate Char events as well as 28 // RawKeyDown events, even if the latter triggered an accelerator. In these 29 // cases, we discard the Char events. 30 if (event.type == blink::WebInputEvent::Char && ignore_next_char_event_) { 31 ignore_next_char_event_ = false; 32 return; 33 } 34 // It's necessary to reset this flag, because a RawKeyDown event may not 35 // always generate a Char event. 36 ignore_next_char_event_ = false; 37 38 if (event.type == blink::WebInputEvent::RawKeyDown) { 39 ui::Accelerator accelerator( 40 static_cast<ui::KeyboardCode>(event.windowsKeyCode), 41 content::GetModifiersFromNativeWebKeyboardEvent(event)); 42 43 // This is tricky: we want to set ignore_next_char_event_ if 44 // ProcessAccelerator returns true. But ProcessAccelerator might delete 45 // |this| if the accelerator is a "close tab" one. So we speculatively 46 // set the flag and fix it if no event was handled. 47 ignore_next_char_event_ = true; 48 49 if (focus_manager->ProcessAccelerator(accelerator)) { 50 return; 51 } 52 53 // ProcessAccelerator didn't handle the accelerator, so we know both 54 // that |this| is still valid, and that we didn't want to set the flag. 55 ignore_next_char_event_ = false; 56 } 57 58 // Any unhandled keyboard/character messages should be defproced. 59 // This allows stuff like F10, etc to work correctly. 60 if (!event.os_event) 61 return; 62 const MSG& message(event.os_event->native_event()); 63 DefWindowProc(message.hwnd, message.message, message.wParam, message.lParam); 64 } 65 66 } // namespace views 67
