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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_COMMON_INPUT_SYNTHETIC_POINTER_ACTION_H_
#define CONTENT_COMMON_INPUT_SYNTHETIC_POINTER_ACTION_H_
#include <memory>
#include "base/gtest_prod_util.h"
#include "base/memory/weak_ptr.h"
#include "content/common/content_export.h"
#include "content/common/input/synthetic_gesture.h"
#include "content/common/input/synthetic_gesture_target.h"
#include "content/common/input/synthetic_pointer_action_list_params.h"
#include "content/common/input/synthetic_pointer_action_params.h"
#include "content/common/input/synthetic_pointer_driver.h"
namespace content {
// It generates and dispatches the synthetic events of touch, mouse and pen
// inputs. The synthetic events are dispatched to each platform in browser and
// sent to renderer to manipulate the DOM elements on the web pages.
class CONTENT_EXPORT SyntheticPointerAction
: public SyntheticGestureBase<SyntheticPointerActionListParams> {
public:
// SyntheticPointerActionGestureParams contains a list of lists of pointer
// actions, that each list of pointer actions will be dispatched together.
explicit SyntheticPointerAction(
const SyntheticPointerActionListParams& params);
SyntheticPointerAction(const SyntheticPointerAction&) = delete;
SyntheticPointerAction& operator=(const SyntheticPointerAction&) = delete;
~SyntheticPointerAction() override;
SyntheticGesture::Result ForwardInputEvents(
const base::TimeTicks& timestamp,
SyntheticGestureTarget* target) override;
bool AllowHighFrequencyDispatch() const override;
void WaitForTargetAck(base::OnceClosure callback,
SyntheticGestureTarget* target) const override;
void SetSyntheticPointerDriver(
base::WeakPtr<SyntheticPointerDriver> synthetic_pointer_driver) {
DCHECK(!internal_synthetic_pointer_driver_);
DCHECK(!external_synthetic_pointer_driver_);
external_synthetic_pointer_driver_ = synthetic_pointer_driver;
}
private:
FRIEND_TEST_ALL_PREFIXES(SyntheticPointerActionTest,
UsesCorrectPointerDriver);
enum class GestureState { UNINITIALIZED, RUNNING, INVALID, DONE };
GestureState ForwardTouchOrMouseInputEvents(const base::TimeTicks& timestamp,
SyntheticGestureTarget* target);
SyntheticPointerDriver* PointerDriver() const;
// An internal pointer driver createad and used only when an
// external_synthetic_pointer_driver_ isn't provided before the gesture is
// initialized. Use PointerDriver() rather than accessing this pointer
// directly.
std::unique_ptr<SyntheticPointerDriver> internal_synthetic_pointer_driver_;
// A pointer driver that's owned externally (by the DevTools InputHandler
// class). Allows the InputHandler to keep track of state from previous
// synthetic events when a sequence of actions are dispatched one by one. Use
// PointerDriver() rather than accessing this pointer directly.
base::WeakPtr<SyntheticPointerDriver> external_synthetic_pointer_driver_;
content::mojom::GestureSourceType gesture_source_type_ =
content::mojom::GestureSourceType::kDefaultInput;
GestureState state_ = GestureState::UNINITIALIZED;
size_t num_actions_dispatched_ = 0U;
};
} // namespace content
#endif // CONTENT_COMMON_INPUT_SYNTHETIC_POINTER_ACTION_H_
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