1 // Copyright 2013 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 28 // Previous calls to TranslateMessage can generate Char events as well as 29 // RawKeyDown events, even if the latter triggered an accelerator. In these 30 // cases, we discard the Char events. 31 if (event.type == blink::WebInputEvent::Char && ignore_next_char_event_) { 32 ignore_next_char_event_ = false; 33 return; 34 } 35 // It's necessary to reset this flag, because a RawKeyDown event may not 36 // always generate a Char event. 37 ignore_next_char_event_ = false; 38 39 if (event.type == blink::WebInputEvent::RawKeyDown) { 40 ui::Accelerator accelerator( 41 static_cast<ui::KeyboardCode>(event.windowsKeyCode), 42 content::GetModifiersFromNativeWebKeyboardEvent(event)); 43 44 // This is tricky: we want to set ignore_next_char_event_ if 45 // ProcessAccelerator returns true. But ProcessAccelerator might delete 46 // |this| if the accelerator is a "close tab" one. So we speculatively 47 // set the flag and fix it if no event was handled. 48 ignore_next_char_event_ = true; 49 50 if (focus_manager->ProcessAccelerator(accelerator)) { 51 return; 52 } 53 54 // ProcessAccelerator didn't handle the accelerator, so we know both 55 // that |this| is still valid, and that we didn't want to set the flag. 56 ignore_next_char_event_ = false; 57 } 58 59 if (event.os_event && !event.skip_in_browser) 60 focus_manager->OnKeyEvent(*static_cast<ui::KeyEvent*>(event.os_event)); 61 } 62 63 } // namespace views 64
