kjs_events.cpp

khtml在gtk上的移植版本

        clipboard = new Clipboard(exec, impl->clipboard());
      }
      return Object(clipboard);
    } else {
      return Undefined();
    }
  }
  case DataTransfer:
  {
    DOM::EventImpl *ei = event.handle();
    if (ei->isDragEvent()) {
      DOM::MouseEventImpl *impl = static_cast<DOM::MouseEventImpl *>(event.handle());
      if (!clipboard) {
        clipboard = new Clipboard(exec, impl->clipboard());
      }
      return Object(clipboard);
    } else {
      return Undefined();
    }
  }
  default:
    kdWarning() << "Unhandled token in DOMEvent::getValueProperty : " << token << endl;
    return Value();
  }
}

void DOMEvent::tryPut(ExecState *exec, const Identifier &propertyName,
                      const Value& value, int attr)
{
  DOMObjectLookupPut<DOMEvent, DOMObject>(exec, propertyName, value, attr,
                                          &DOMEventTable, this);
}

void DOMEvent::putValue(ExecState *exec, int token, const Value& value, int)
{
  switch (token) {
  case ReturnValue:
    event.setDefaultPrevented(!value.toBoolean(exec));
    break;
  case CancelBubble:
    event.setCancelBubble(value.toBoolean(exec));
    break;
  default:
    break;
  }
}

Value DOMEventProtoFunc::tryCall(ExecState *exec, Object & thisObj, const List &args)
{
  if (!thisObj.inherits(&KJS::DOMEvent::info)) {
    Object err = Error::create(exec,TypeError);
    exec->setException(err);
    return err;
  }
  DOM::Event event = static_cast<DOMEvent *>( thisObj.imp() )->toEvent();
  switch (id) {
    case DOMEvent::StopPropagation:
      event.stopPropagation();
    case DOMEvent::PreventDefault:
      event.preventDefault();
      return Undefined();
    case DOMEvent::InitEvent:
      event.initEvent(args[0].toString(exec).string(),args[1].toBoolean(exec),args[2].toBoolean(exec));
      return Undefined();
  };
  return Undefined();
}

Value KJS::getDOMEvent(ExecState *exec, DOM::Event e)
{
  DOM::EventImpl *ei = e.handle();
  if (!ei)
    return Null();
  ScriptInterpreter* interp = static_cast<ScriptInterpreter *>(exec->dynamicInterpreter());

  KJS::Interpreter::lock();

  DOMObject *ret = interp->getDOMObject(ei);
  if (!ret) {
    if (ei->isKeyboardEvent())
      ret = new DOMKeyboardEvent(exec, e);
    else if (ei->isMouseEvent())
      ret = new DOMMouseEvent(exec, e);
    else if (ei->isUIEvent())
      ret = new DOMUIEvent(exec, e);
    else if (ei->isMutationEvent())
      ret = new DOMMutationEvent(exec, e);
    else
      ret = new DOMEvent(exec, e);

    interp->putDOMObject(ei, ret);
  }

  KJS::Interpreter::unlock();

  return Value(ret);
}

DOM::Event KJS::toEvent(const Value& val)
{
  Object obj = Object::dynamicCast(val);
  if (obj.isNull() || !obj.inherits(&DOMEvent::info))
    return DOM::Event();

  const DOMEvent *dobj = static_cast<const DOMEvent*>(obj.imp());
  return dobj->toEvent();
}

// -------------------------------------------------------------------------


const ClassInfo EventExceptionConstructor::info = { "EventExceptionConstructor", 0, &EventExceptionConstructorTable, 0 };
/*
@begin EventExceptionConstructorTable 1
  UNSPECIFIED_EVENT_TYPE_ERR    DOM::EventException::UNSPECIFIED_EVENT_TYPE_ERR DontDelete|ReadOnly
@end
*/
Value EventExceptionConstructor::tryGet(ExecState *exec, const Identifier &p) const
{
  return DOMObjectLookupGetValue<EventExceptionConstructor, DOMObject>(exec,p,&EventExceptionConstructorTable,this);
}

Value EventExceptionConstructor::getValueProperty(ExecState *, int token) const
{
  // We use the token as the value to return directly
  return Number(token);
}

Value KJS::getEventExceptionConstructor(ExecState *exec)
{
  return cacheGlobalObject<EventExceptionConstructor>(exec, "[[eventException.constructor]]");
}

// -------------------------------------------------------------------------

const ClassInfo DOMUIEvent::info = { "UIEvent", &DOMEvent::info, &DOMUIEventTable, 0 };
/*
@begin DOMUIEventTable 8
  view		DOMUIEvent::View	DontDelete|ReadOnly
  detail	DOMUIEvent::Detail	DontDelete|ReadOnly
  keyCode	DOMUIEvent::KeyCode	DontDelete|ReadOnly
  charCode	DOMUIEvent::CharCode	DontDelete|ReadOnly
  layerX	DOMUIEvent::LayerX	DontDelete|ReadOnly
  layerY	DOMUIEvent::LayerY	DontDelete|ReadOnly
  pageX		DOMUIEvent::PageX	DontDelete|ReadOnly
  pageY		DOMUIEvent::PageY	DontDelete|ReadOnly
  which		DOMUIEvent::Which	DontDelete|ReadOnly
@end
@begin DOMUIEventProtoTable 1
  initUIEvent	DOMUIEvent::InitUIEvent	DontDelete|Function 5
@end
*/
DEFINE_PROTOTYPE("DOMUIEvent",DOMUIEventProto)
IMPLEMENT_PROTOFUNC(DOMUIEventProtoFunc)
IMPLEMENT_PROTOTYPE_WITH_PARENT(DOMUIEventProto,DOMUIEventProtoFunc,DOMEventProto)

DOMUIEvent::~DOMUIEvent()
{
}

Value DOMUIEvent::tryGet(ExecState *exec, const Identifier &p) const
{
  return DOMObjectLookupGetValue<DOMUIEvent,DOMEvent>(exec,p,&DOMUIEventTable,this);
}

Value DOMUIEvent::getValueProperty(ExecState *exec, int token) const
{
  switch (token) {
  case View:
    return getDOMAbstractView(exec,static_cast<DOM::UIEvent>(event).view());
  case Detail:
    return Number(static_cast<DOM::UIEvent>(event).detail());
  case KeyCode:
    return Number(static_cast<DOM::UIEvent>(event).keyCode());
  case CharCode:
    return Number(static_cast<DOM::UIEvent>(event).charCode());
  case LayerX:
    return Number(static_cast<DOM::UIEvent>(event).layerX());
  case LayerY:
    return Number(static_cast<DOM::UIEvent>(event).layerY());
  case PageX:
    return Number(static_cast<DOM::UIEvent>(event).pageX());
  case PageY:
    return Number(static_cast<DOM::UIEvent>(event).pageY());
  case Which:
    return Number(static_cast<DOM::UIEvent>(event).which());
  default:
    kdWarning() << "Unhandled token in DOMUIEvent::getValueProperty : " << token << endl;
    return Undefined();
  }
}

Value DOMUIEventProtoFunc::tryCall(ExecState *exec, Object &thisObj, const List &args)
{
  if (!thisObj.inherits(&KJS::DOMUIEvent::info)) {
    Object err = Error::create(exec,TypeError);
    exec->setException(err);
    return err;
  }
  DOM::UIEvent uiEvent = static_cast<DOMUIEvent *>(thisObj.imp())->toUIEvent();
  switch (id) {
    case DOMUIEvent::InitUIEvent: {
      DOM::AbstractView v = toAbstractView(args[3]);
      static_cast<DOM::UIEvent>(uiEvent).initUIEvent(args[0].toString(exec).string(),
                                                     args[1].toBoolean(exec),
                                                     args[2].toBoolean(exec),
                                                     v,
                                                     args[4].toInt32(exec));
      }
      return Undefined();
  }
  return Undefined();
}

// -------------------------------------------------------------------------

const ClassInfo DOMMouseEvent::info = { "MouseEvent", &DOMUIEvent::info, &DOMMouseEventTable, 0 };

/*
@begin DOMMouseEventTable 16
  screenX	DOMMouseEvent::ScreenX	DontDelete|ReadOnly
  screenY	DOMMouseEvent::ScreenY	DontDelete|ReadOnly
  clientX	DOMMouseEvent::ClientX	DontDelete|ReadOnly
  x		DOMMouseEvent::X	DontDelete|ReadOnly
  clientY	DOMMouseEvent::ClientY	DontDelete|ReadOnly
  y		DOMMouseEvent::Y	DontDelete|ReadOnly
  offsetX	DOMMouseEvent::OffsetX	DontDelete|ReadOnly
  offsetY	DOMMouseEvent::OffsetY	DontDelete|ReadOnly
  ctrlKey	DOMMouseEvent::CtrlKey	DontDelete|ReadOnly
  shiftKey	DOMMouseEvent::ShiftKey	DontDelete|ReadOnly
  altKey	DOMMouseEvent::AltKey	DontDelete|ReadOnly
  metaKey	DOMMouseEvent::MetaKey	DontDelete|ReadOnly
  button	DOMMouseEvent::Button	DontDelete|ReadOnly
  relatedTarget	DOMMouseEvent::RelatedTarget DontDelete|ReadOnly
  fromElement	DOMMouseEvent::FromElement DontDelete|ReadOnly
  toElement	DOMMouseEvent::ToElement	DontDelete|ReadOnly
@end
@begin DOMMouseEventProtoTable 1
  initMouseEvent	DOMMouseEvent::InitMouseEvent	DontDelete|Function 15
@end
*/
DEFINE_PROTOTYPE("DOMMouseEvent",DOMMouseEventProto)
IMPLEMENT_PROTOFUNC(DOMMouseEventProtoFunc)
IMPLEMENT_PROTOTYPE_WITH_PARENT(DOMMouseEventProto,DOMMouseEventProtoFunc,DOMUIEventProto)

DOMMouseEvent::~DOMMouseEvent()
{
}

Value DOMMouseEvent::tryGet(ExecState *exec, const Identifier &p) const
{
#ifdef KJS_VERBOSE
  kdDebug(6070) << "DOMMouseEvent::tryGet " << p.qstring() << endl;
#endif
  return DOMObjectLookupGetValue<DOMMouseEvent,DOMUIEvent>(exec,p,&DOMMouseEventTable,this);
}

Value DOMMouseEvent::getValueProperty(ExecState *exec, int token) const
{
  switch (token) {
  case ScreenX:
    return Number(static_cast<DOM::MouseEvent>(event).screenX());
  case ScreenY:
    return Number(static_cast<DOM::MouseEvent>(event).screenY());
  case ClientX:
  case X:
    return Number(static_cast<DOM::MouseEvent>(event).clientX());
  case ClientY:
  case Y:
    return Number(static_cast<DOM::MouseEvent>(event).clientY());
  case OffsetX:
  case OffsetY: // MSIE extension
  {
    DOM::Node node = event.target();
    node.handle()->getDocument()->updateRendering();
    khtml::RenderObject *rend = node.handle() ? node.handle()->renderer() : 0L;
    int x = static_cast<DOM::MouseEvent>(event).clientX();
    int y = static_cast<DOM::MouseEvent>(event).clientY();
    if ( rend ) {
      int xPos, yPos;
      if ( rend->absolutePosition( xPos, yPos ) ) {
        kdDebug() << "DOMMouseEvent::getValueProperty rend=" << rend << "  xPos=" << xPos << "  yPos=" << yPos << endl;
        x -= xPos;
        y -= yPos;
      }
    }
    return Number( token == OffsetX ? x : y );
  }
  case CtrlKey:
    return Boolean(static_cast<DOM::MouseEvent>(event).ctrlKey());
  case ShiftKey:
    return Boolean(static_cast<DOM::MouseEvent>(event).shiftKey());
  case AltKey:
    return Boolean(static_cast<DOM::MouseEvent>(event).altKey());
  case MetaKey:
    return Boolean(static_cast<DOM::MouseEvent>(event).metaKey());
  case Button:
  {
    // Tricky. The DOM (and khtml) use 0 for LMB, 1 for MMB and 2 for RMB
    // but MSIE uses 1=LMB, 2=RMB, 4=MMB, as a bitfield
    int domButton = static_cast<DOM::MouseEvent>(event).button();
    int button = domButton==0 ? 1 : domButton==1 ? 4 : domButton==2 ? 2 : 0;
    return Number( (unsigned int)button );
  }
  case ToElement:
    // MSIE extension - "the object toward which the user is moving the mouse pointer"
    if (event.handle()->id() == DOM::EventImpl::MOUSEOUT_EVENT)
      return getDOMNode(exec,static_cast<DOM::MouseEvent>(event).relatedTarget());
    return getDOMNode(exec,static_cast<DOM::MouseEvent>(event).target());
  case FromElement:
    // MSIE extension - "object from which activation
    // or the mouse pointer is exiting during the event" (huh?)
    if (event.handle()->id() == DOM::EventImpl::MOUSEOUT_EVENT)
      return getDOMNode(exec,static_cast<DOM::MouseEvent>(event).target());
    /* fall through */
  case RelatedTarget:
    return getDOMNode(exec,static_cast<DOM::MouseEvent>(event).relatedTarget());
  default:
    kdWarning() << "Unhandled token in DOMMouseEvent::getValueProperty : " << token << endl;
    return Value();
  }
}

Value DOMMouseEventProtoFunc::tryCall(ExecState *exec, Object &thisObj, const List &args)
{
  if (!thisObj.inherits(&KJS::DOMMouseEvent::info)) {
    Object err = Error::create(exec,TypeError);
    exec->setException(err);
    return err;
  }
  DOM::MouseEvent mouseEvent = static_cast<DOMMouseEvent *>(thisObj.imp())->toMouseEvent();
  switch (id) {
    case DOMMouseEvent::InitMouseEvent:
      mouseEvent.initMouseEvent(args[0].toString(exec).string(), // typeArg
                                args[1].toBoolean(exec), // canBubbleArg
                                args[2].toBoolean(exec), // cancelableArg
                                toAbstractView(args[3]), // viewArg
                                args[4].toInt32(exec), // detailArg
                                args[5].toInt32(exec), // screenXArg
                                args[6].toInt32(exec), // screenYArg
                                args[7].toInt32(exec), // clientXArg
                                args[8].toInt32(exec), // clientYArg
                                args[9].toBoolean(exec), // ctrlKeyArg
                                args[10].toBoolean(exec), // altKeyArg
                                args[11].toBoolean(exec), // shiftKeyArg
                                args[12].toBoolean(exec), // metaKeyArg
                                args[13].toInt32(exec), // buttonArg
                                toNode(args[14])); // relatedTargetArg
      return Undefined();
  }
  return Undefined();
}

// -------------------------------------------------------------------------

const ClassInfo DOMKeyboardEvent::info = { "KeyboardEvent", &DOMUIEvent::info, &DOMKeyboardEventTable, 0 };

/*
@begin DOMKeyboardEventTable 5
  keyIdentifier	DOMKeyboardEvent::KeyIdentifier	DontDelete|ReadOnly
  keyLocation	DOMKeyboardEvent::KeyLocation	DontDelete|ReadOnly