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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef InputDeviceCapabilities_h
#define InputDeviceCapabilities_h
#include "bindings/core/v8/ScriptWrappable.h"
#include "core/CoreExport.h"
#include "core/input/InputDeviceCapabilitiesInit.h"
namespace blink {
class CORE_EXPORT InputDeviceCapabilities final
: public GarbageCollected<InputDeviceCapabilities>,
public ScriptWrappable {
DEFINE_WRAPPERTYPEINFO();
public:
static InputDeviceCapabilities* create(bool firesTouchEvents) {
return new InputDeviceCapabilities(firesTouchEvents);
}
static InputDeviceCapabilities* create(
const InputDeviceCapabilitiesInit& initializer) {
return new InputDeviceCapabilities(initializer);
}
bool firesTouchEvents() const { return m_firesTouchEvents; }
DEFINE_INLINE_TRACE() {}
private:
InputDeviceCapabilities(bool firesTouchEvents);
InputDeviceCapabilities(const InputDeviceCapabilitiesInit&);
// Whether this device dispatches touch events. This mainly lets developers
// avoid handling both touch and mouse events dispatched for a single user
// action.
bool m_firesTouchEvents;
};
// Grouping constant-valued InputDeviceCapabilities objects together,
// which is kept and used by each 'view' (DOMWindow) that dispatches
// events parameterized over InputDeviceCapabilities.
//
// TODO(sof): lazily instantiate InputDeviceCapabilities instances upon
// UIEvent access instead. This would allow internal tracking of such
// capabilities by value.
class InputDeviceCapabilitiesConstants final
: public GarbageCollected<InputDeviceCapabilitiesConstants> {
public:
// Returns an InputDeviceCapabilities which has
// |firesTouchEvents| set to value of |firesTouch|.
InputDeviceCapabilities* firesTouchEvents(bool firesTouch);
DEFINE_INLINE_TRACE() {
visitor->trace(m_firesTouchEvents);
visitor->trace(m_doesntFireTouchEvents);
}
private:
Member<InputDeviceCapabilities> m_firesTouchEvents;
Member<InputDeviceCapabilities> m_doesntFireTouchEvents;
};
} // namespace blink
#endif // InputDeviceCapabilities_h
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