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| 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 | |
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