third_party/WebKit/Source/core/events/GestureEvent.cpp

/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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#include "core/events/GestureEvent.h"

#include "core/dom/Element.h"
#include "platform/wtf/text/AtomicString.h"

namespace blink {

GestureEvent* GestureEvent::Create(AbstractView* view,
                                   const WebGestureEvent& event) {
  AtomicString event_type;

  switch (event.GetType()) {
    case WebInputEvent::kGestureScrollBegin:
      event_type = EventTypeNames::gesturescrollstart;
      break;
    case WebInputEvent::kGestureScrollEnd:
      event_type = EventTypeNames::gesturescrollend;
      break;
    case WebInputEvent::kGestureScrollUpdate:
      event_type = EventTypeNames::gesturescrollupdate;
      break;
    case WebInputEvent::kGestureTap:
      event_type = EventTypeNames::gesturetap;
      break;
    case WebInputEvent::kGestureTapUnconfirmed:
      event_type = EventTypeNames::gesturetapunconfirmed;
      break;
    case WebInputEvent::kGestureTapDown:
      event_type = EventTypeNames::gesturetapdown;
      break;
    case WebInputEvent::kGestureShowPress:
      event_type = EventTypeNames::gestureshowpress;
      break;
    case WebInputEvent::kGestureLongPress:
      event_type = EventTypeNames::gesturelongpress;
      break;
    case WebInputEvent::kGestureFlingStart:
      event_type = EventTypeNames::gestureflingstart;
      break;
    case WebInputEvent::kGestureTwoFingerTap:
    case WebInputEvent::kGesturePinchBegin:
    case WebInputEvent::kGesturePinchEnd:
    case WebInputEvent::kGesturePinchUpdate:
    case WebInputEvent::kGestureTapCancel:
    default:
      return nullptr;
  }
  return new GestureEvent(event_type, view, event);
}

GestureEvent::GestureEvent(const AtomicString& event_type,
                           AbstractView* view,
                           const WebGestureEvent& event)
    : UIEventWithKeyState(
          event_type,
          true,
          true,
          view,
          0,
          static_cast<WebInputEvent::Modifiers>(event.GetModifiers()),
          TimeTicks::FromSeconds(event.TimeStampSeconds()),
          nullptr),
      native_event_(event) {}

const AtomicString& GestureEvent::InterfaceName() const {
  // FIXME: when a GestureEvent.idl interface is defined, return the string
  // "GestureEvent".  Until that happens, do not advertise an interface that
  // does not exist, since it will trip up the bindings integrity checks.
  return UIEvent::InterfaceName();
}

bool GestureEvent::IsGestureEvent() const {
  return true;
}

void GestureEvent::Trace(blink::Visitor* visitor) {
  UIEvent::Trace(visitor);
}

}  // namespace blink