diff options
Diffstat (limited to 'chromium/third_party/WebKit/Source/core/events/KeyboardEvent.cpp')
-rw-r--r-- | chromium/third_party/WebKit/Source/core/events/KeyboardEvent.cpp | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/chromium/third_party/WebKit/Source/core/events/KeyboardEvent.cpp b/chromium/third_party/WebKit/Source/core/events/KeyboardEvent.cpp new file mode 100644 index 00000000000..c03712edadd --- /dev/null +++ b/chromium/third_party/WebKit/Source/core/events/KeyboardEvent.cpp @@ -0,0 +1,245 @@ +/** + * Copyright (C) 2001 Peter Kelly (pmk@post.com) + * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de) + * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com) + * Copyright (C) 2003, 2005, 2006, 2007 Apple Inc. All rights reserved. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public License + * along with this library; see the file COPYING.LIB. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#include "config.h" +#include "core/events/KeyboardEvent.h" + +#include "core/events/ThreadLocalEventNames.h" +#include "platform/PlatformKeyboardEvent.h" +#include "platform/WindowsKeyboardCodes.h" + +namespace WebCore { + +static inline const AtomicString& eventTypeForKeyboardEventType(PlatformEvent::Type type) +{ + switch (type) { + case PlatformEvent::KeyUp: + return EventTypeNames::keyup; + case PlatformEvent::RawKeyDown: + return EventTypeNames::keydown; + case PlatformEvent::Char: + return EventTypeNames::keypress; + case PlatformEvent::KeyDown: + // The caller should disambiguate the combined event into RawKeyDown or Char events. + break; + default: + break; + } + ASSERT_NOT_REACHED(); + return EventTypeNames::keydown; +} + +static inline int windowsVirtualKeyCodeWithoutLocation(int keycode) +{ + switch (keycode) { + case VK_LCONTROL: + case VK_RCONTROL: + return VK_CONTROL; + case VK_LSHIFT: + case VK_RSHIFT: + return VK_SHIFT; + case VK_LMENU: + case VK_RMENU: + return VK_MENU; + default: + return keycode; + } +} + +static inline KeyboardEvent::KeyLocationCode keyLocationCode(const PlatformKeyboardEvent& key) +{ + if (key.isKeypad()) + return KeyboardEvent::DOM_KEY_LOCATION_NUMPAD; + + switch (key.windowsVirtualKeyCode()) { + case VK_LCONTROL: + case VK_LSHIFT: + case VK_LMENU: + case VK_LWIN: + return KeyboardEvent::DOM_KEY_LOCATION_LEFT; + case VK_RCONTROL: + case VK_RSHIFT: + case VK_RMENU: + case VK_RWIN: + return KeyboardEvent::DOM_KEY_LOCATION_RIGHT; + default: + return KeyboardEvent::DOM_KEY_LOCATION_STANDARD; + } +} + +KeyboardEventInit::KeyboardEventInit() + : location(0) + , ctrlKey(false) + , altKey(false) + , shiftKey(false) + , metaKey(false) + , repeat(false) +{ +} + +KeyboardEvent::KeyboardEvent() + : m_location(DOM_KEY_LOCATION_STANDARD) + , m_altGraphKey(false) + , m_isAutoRepeat(false) +{ + ScriptWrappable::init(this); +} + +KeyboardEvent::KeyboardEvent(const PlatformKeyboardEvent& key, AbstractView* view) + : UIEventWithKeyState(eventTypeForKeyboardEventType(key.type()), + true, true, view, 0, key.ctrlKey(), key.altKey(), key.shiftKey(), key.metaKey()) + , m_keyEvent(adoptPtr(new PlatformKeyboardEvent(key))) + , m_keyIdentifier(key.keyIdentifier()) + , m_location(keyLocationCode(key)) + , m_altGraphKey(false) + , m_isAutoRepeat(key.isAutoRepeat()) +{ + ScriptWrappable::init(this); +} + +KeyboardEvent::KeyboardEvent(const AtomicString& eventType, const KeyboardEventInit& initializer) + : UIEventWithKeyState(eventType, initializer.bubbles, initializer.cancelable, initializer.view, initializer.detail, initializer.ctrlKey, initializer.altKey, initializer.shiftKey, initializer.metaKey) + , m_keyIdentifier(initializer.keyIdentifier) + , m_location(initializer.location) + , m_altGraphKey(false) + , m_isAutoRepeat(initializer.repeat) +{ + ScriptWrappable::init(this); +} + +KeyboardEvent::KeyboardEvent(const AtomicString& eventType, bool canBubble, bool cancelable, AbstractView *view, + const String &keyIdentifier, unsigned location, + bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, bool altGraphKey) + : UIEventWithKeyState(eventType, canBubble, cancelable, view, 0, ctrlKey, altKey, shiftKey, metaKey) + , m_keyIdentifier(keyIdentifier) + , m_location(location) + , m_altGraphKey(altGraphKey) + , m_isAutoRepeat(false) +{ + ScriptWrappable::init(this); +} + +KeyboardEvent::~KeyboardEvent() +{ +} + +void KeyboardEvent::initKeyboardEvent(const AtomicString& type, bool canBubble, bool cancelable, AbstractView* view, + const String &keyIdentifier, unsigned location, + bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, bool altGraphKey) +{ + if (dispatched()) + return; + + initUIEvent(type, canBubble, cancelable, view, 0); + + m_keyIdentifier = keyIdentifier; + m_location = location; + m_ctrlKey = ctrlKey; + m_shiftKey = shiftKey; + m_altKey = altKey; + m_metaKey = metaKey; + m_altGraphKey = altGraphKey; +} + +bool KeyboardEvent::getModifierState(const String& keyIdentifier) const +{ + // FIXME: The following keyIdentifiers are not supported yet (crbug.com/265458): + // "AltGraph", "CapsLock", "Fn", "NumLock", "ScrollLock", "SymbolLock", "OS". + if (keyIdentifier == "Control") + return ctrlKey(); + if (keyIdentifier == "Shift") + return shiftKey(); + if (keyIdentifier == "Alt") + return altKey(); + if (keyIdentifier == "Meta") + return metaKey(); + return false; +} + +int KeyboardEvent::keyCode() const +{ + // IE: virtual key code for keyup/keydown, character code for keypress + // Firefox: virtual key code for keyup/keydown, zero for keypress + // We match IE. + if (!m_keyEvent) + return 0; + if (type() == EventTypeNames::keydown || type() == EventTypeNames::keyup) + return windowsVirtualKeyCodeWithoutLocation(m_keyEvent->windowsVirtualKeyCode()); + + return charCode(); +} + +int KeyboardEvent::charCode() const +{ + // IE: not supported + // Firefox: 0 for keydown/keyup events, character code for keypress + // We match Firefox + + if (!m_keyEvent || (type() != EventTypeNames::keypress)) + return 0; + String text = m_keyEvent->text(); + return static_cast<int>(text.characterStartingAt(0)); +} + +const AtomicString& KeyboardEvent::interfaceName() const +{ + return EventNames::KeyboardEvent; +} + +bool KeyboardEvent::isKeyboardEvent() const +{ + return true; +} + +int KeyboardEvent::which() const +{ + // Netscape's "which" returns a virtual key code for keydown and keyup, and a character code for keypress. + // That's exactly what IE's "keyCode" returns. So they are the same for keyboard events. + return keyCode(); +} + +KeyboardEvent* findKeyboardEvent(Event* event) +{ + for (Event* e = event; e; e = e->underlyingEvent()) { + if (e->isKeyboardEvent()) + return toKeyboardEvent(e); + } + return 0; +} + +PassRefPtr<KeyboardEventDispatchMediator> KeyboardEventDispatchMediator::create(PassRefPtr<KeyboardEvent> event) +{ + return adoptRef(new KeyboardEventDispatchMediator(event)); +} + +KeyboardEventDispatchMediator::KeyboardEventDispatchMediator(PassRefPtr<KeyboardEvent> event) + : EventDispatchMediator(event) +{ +} + +bool KeyboardEventDispatchMediator::dispatchEvent(EventDispatcher* dispatcher) const +{ + // Make sure not to return true if we already took default action while handling the event. + return EventDispatchMediator::dispatchEvent(dispatcher) && !event()->defaultHandled(); +} + +} // namespace WebCore |