1 // Copyright (c) 2011 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 "chrome/browser/ui/views/unhandled_keyboard_event_handler.h" 6 7 #include "base/logging.h" 8 #include "views/focus/focus_manager.h" 9 10 UnhandledKeyboardEventHandler::UnhandledKeyboardEventHandler() { 11 ignore_next_char_event_ = false; 12 } 13 14 UnhandledKeyboardEventHandler::~UnhandledKeyboardEventHandler() { 15 } 16 17 void UnhandledKeyboardEventHandler::HandleKeyboardEvent( 18 const NativeWebKeyboardEvent& event, 19 views::FocusManager* focus_manager) { 20 if (!focus_manager) { 21 NOTREACHED(); 22 return; 23 } 24 // Previous calls to TranslateMessage can generate Char events as well as 25 // RawKeyDown events, even if the latter triggered an accelerator. In these 26 // cases, we discard the Char events. 27 if (event.type == WebKit::WebInputEvent::Char && ignore_next_char_event_) { 28 ignore_next_char_event_ = false; 29 return; 30 } 31 // It's necessary to reset this flag, because a RawKeyDown event may not 32 // always generate a Char event. 33 ignore_next_char_event_ = false; 34 35 if (event.type == WebKit::WebInputEvent::RawKeyDown) { 36 views::Accelerator accelerator( 37 static_cast<ui::KeyboardCode>(event.windowsKeyCode), 38 (event.modifiers & NativeWebKeyboardEvent::ShiftKey) == 39 NativeWebKeyboardEvent::ShiftKey, 40 (event.modifiers & NativeWebKeyboardEvent::ControlKey) == 41 NativeWebKeyboardEvent::ControlKey, 42 (event.modifiers & NativeWebKeyboardEvent::AltKey) == 43 NativeWebKeyboardEvent::AltKey); 44 45 // This is tricky: we want to set ignore_next_char_event_ if 46 // ProcessAccelerator returns true. But ProcessAccelerator might delete 47 // |this| if the accelerator is a "close tab" one. So we speculatively 48 // set the flag and fix it if no event was handled. 49 ignore_next_char_event_ = true; 50 51 if (focus_manager->ProcessAccelerator(accelerator)) { 52 return; 53 } 54 55 // ProcessAccelerator didn't handle the accelerator, so we know both 56 // that |this| is still valid, and that we didn't want to set the flag. 57 ignore_next_char_event_ = false; 58 } 59 60 #if defined(OS_WIN) 61 // Any unhandled keyboard/character messages should be defproced. 62 // This allows stuff like F10, etc to work correctly. 63 DefWindowProc(event.os_event.hwnd, event.os_event.message, 64 event.os_event.wParam, event.os_event.lParam); 65 #endif 66 } 67 68
