1 /** 2 * Copyright (C) 2001 Peter Kelly (pmk (at) post.com) 3 * Copyright (C) 2001 Tobias Anton (anton (at) stud.fbi.fh-darmstadt.de) 4 * Copyright (C) 2006 Samuel Weinig (sam.weinig (at) gmail.com) 5 * Copyright (C) 2003, 2005, 2006, 2007 Apple Inc. All rights reserved. 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Library General Public 9 * License as published by the Free Software Foundation; either 10 * version 2 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Library General Public License for more details. 16 * 17 * You should have received a copy of the GNU Library General Public License 18 * along with this library; see the file COPYING.LIB. If not, write to 19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20 * Boston, MA 02110-1301, USA. 21 */ 22 23 #include "config.h" 24 #include "core/events/KeyboardEvent.h" 25 26 #include "platform/PlatformKeyboardEvent.h" 27 #include "platform/WindowsKeyboardCodes.h" 28 29 namespace blink { 30 31 static inline const AtomicString& eventTypeForKeyboardEventType(PlatformEvent::Type type) 32 { 33 switch (type) { 34 case PlatformEvent::KeyUp: 35 return EventTypeNames::keyup; 36 case PlatformEvent::RawKeyDown: 37 return EventTypeNames::keydown; 38 case PlatformEvent::Char: 39 return EventTypeNames::keypress; 40 case PlatformEvent::KeyDown: 41 // The caller should disambiguate the combined event into RawKeyDown or Char events. 42 break; 43 default: 44 break; 45 } 46 ASSERT_NOT_REACHED(); 47 return EventTypeNames::keydown; 48 } 49 50 static inline int windowsVirtualKeyCodeWithoutLocation(int keycode) 51 { 52 switch (keycode) { 53 case VK_LCONTROL: 54 case VK_RCONTROL: 55 return VK_CONTROL; 56 case VK_LSHIFT: 57 case VK_RSHIFT: 58 return VK_SHIFT; 59 case VK_LMENU: 60 case VK_RMENU: 61 return VK_MENU; 62 default: 63 return keycode; 64 } 65 } 66 67 static inline KeyboardEvent::KeyLocationCode keyLocationCode(const PlatformKeyboardEvent& key) 68 { 69 if (key.isKeypad()) 70 return KeyboardEvent::DOM_KEY_LOCATION_NUMPAD; 71 72 switch (key.windowsVirtualKeyCode()) { 73 case VK_LCONTROL: 74 case VK_LSHIFT: 75 case VK_LMENU: 76 case VK_LWIN: 77 return KeyboardEvent::DOM_KEY_LOCATION_LEFT; 78 case VK_RCONTROL: 79 case VK_RSHIFT: 80 case VK_RMENU: 81 case VK_RWIN: 82 return KeyboardEvent::DOM_KEY_LOCATION_RIGHT; 83 default: 84 return KeyboardEvent::DOM_KEY_LOCATION_STANDARD; 85 } 86 } 87 88 KeyboardEventInit::KeyboardEventInit() 89 : location(0) 90 , ctrlKey(false) 91 , altKey(false) 92 , shiftKey(false) 93 , metaKey(false) 94 , repeat(false) 95 { 96 } 97 98 KeyboardEvent::KeyboardEvent() 99 : m_location(DOM_KEY_LOCATION_STANDARD) 100 , m_isAutoRepeat(false) 101 { 102 } 103 104 KeyboardEvent::KeyboardEvent(const PlatformKeyboardEvent& key, AbstractView* view) 105 : UIEventWithKeyState(eventTypeForKeyboardEventType(key.type()), 106 true, true, view, 0, key.ctrlKey(), key.altKey(), key.shiftKey(), key.metaKey()) 107 , m_keyEvent(adoptPtr(new PlatformKeyboardEvent(key))) 108 , m_keyIdentifier(key.keyIdentifier()) 109 , m_location(keyLocationCode(key)) 110 , m_isAutoRepeat(key.isAutoRepeat()) 111 { 112 } 113 114 KeyboardEvent::KeyboardEvent(const AtomicString& eventType, const KeyboardEventInit& initializer) 115 : UIEventWithKeyState(eventType, initializer.bubbles, initializer.cancelable, initializer.view, initializer.detail, initializer.ctrlKey, initializer.altKey, initializer.shiftKey, initializer.metaKey) 116 , m_keyIdentifier(initializer.keyIdentifier) 117 , m_location(initializer.location) 118 , m_isAutoRepeat(initializer.repeat) 119 { 120 } 121 122 KeyboardEvent::KeyboardEvent(const AtomicString& eventType, bool canBubble, bool cancelable, AbstractView *view, 123 const String &keyIdentifier, unsigned location, 124 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey) 125 : UIEventWithKeyState(eventType, canBubble, cancelable, view, 0, ctrlKey, altKey, shiftKey, metaKey) 126 , m_keyIdentifier(keyIdentifier) 127 , m_location(location) 128 , m_isAutoRepeat(false) 129 { 130 } 131 132 KeyboardEvent::~KeyboardEvent() 133 { 134 } 135 136 void KeyboardEvent::initKeyboardEvent(const AtomicString& type, bool canBubble, bool cancelable, AbstractView* view, 137 const String &keyIdentifier, unsigned location, 138 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey) 139 { 140 if (dispatched()) 141 return; 142 143 initUIEvent(type, canBubble, cancelable, view, 0); 144 145 m_keyIdentifier = keyIdentifier; 146 m_location = location; 147 m_ctrlKey = ctrlKey; 148 m_shiftKey = shiftKey; 149 m_altKey = altKey; 150 m_metaKey = metaKey; 151 } 152 153 bool KeyboardEvent::getModifierState(const String& keyIdentifier) const 154 { 155 // FIXME: The following keyIdentifiers are not supported yet (crbug.com/265458): 156 // "AltGraph", "CapsLock", "Fn", "NumLock", "ScrollLock", "SymbolLock", "OS". 157 if (keyIdentifier == "Control") 158 return ctrlKey(); 159 if (keyIdentifier == "Shift") 160 return shiftKey(); 161 if (keyIdentifier == "Alt") 162 return altKey(); 163 if (keyIdentifier == "Meta") 164 return metaKey(); 165 return false; 166 } 167 168 int KeyboardEvent::keyCode() const 169 { 170 // IE: virtual key code for keyup/keydown, character code for keypress 171 // Firefox: virtual key code for keyup/keydown, zero for keypress 172 // We match IE. 173 if (!m_keyEvent) 174 return 0; 175 if (type() == EventTypeNames::keydown || type() == EventTypeNames::keyup) 176 return windowsVirtualKeyCodeWithoutLocation(m_keyEvent->windowsVirtualKeyCode()); 177 178 return charCode(); 179 } 180 181 int KeyboardEvent::charCode() const 182 { 183 // IE: not supported 184 // Firefox: 0 for keydown/keyup events, character code for keypress 185 // We match Firefox 186 187 if (!m_keyEvent || (type() != EventTypeNames::keypress)) 188 return 0; 189 String text = m_keyEvent->text(); 190 return static_cast<int>(text.characterStartingAt(0)); 191 } 192 193 const AtomicString& KeyboardEvent::interfaceName() const 194 { 195 return EventNames::KeyboardEvent; 196 } 197 198 bool KeyboardEvent::isKeyboardEvent() const 199 { 200 return true; 201 } 202 203 int KeyboardEvent::which() const 204 { 205 // Netscape's "which" returns a virtual key code for keydown and keyup, and a character code for keypress. 206 // That's exactly what IE's "keyCode" returns. So they are the same for keyboard events. 207 return keyCode(); 208 } 209 210 void KeyboardEvent::trace(Visitor* visitor) 211 { 212 UIEventWithKeyState::trace(visitor); 213 } 214 215 PassRefPtrWillBeRawPtr<KeyboardEventDispatchMediator> KeyboardEventDispatchMediator::create(PassRefPtrWillBeRawPtr<KeyboardEvent> event) 216 { 217 return adoptRefWillBeNoop(new KeyboardEventDispatchMediator(event)); 218 } 219 220 KeyboardEventDispatchMediator::KeyboardEventDispatchMediator(PassRefPtrWillBeRawPtr<KeyboardEvent> event) 221 : EventDispatchMediator(event) 222 { 223 } 224 225 bool KeyboardEventDispatchMediator::dispatchEvent(EventDispatcher* dispatcher) const 226 { 227 // Make sure not to return true if we already took default action while handling the event. 228 return EventDispatchMediator::dispatchEvent(dispatcher) && !event()->defaultHandled(); 229 } 230 231 } // namespace blink 232