chromium/components/input/render_widget_host_view_input.h

// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_INPUT_RENDER_WIDGET_HOST_VIEW_INPUT_H_
#define COMPONENTS_INPUT_RENDER_WIDGET_HOST_VIEW_INPUT_H_

#include <memory>
#include <optional>
#include <string>

#include "components/input/event_with_latency_info.h"
#include "components/input/input_router_impl.h"
#include "components/input/render_input_router.h"
#include "components/viz/common/hit_test/aggregated_hit_test_region.h"
#include "components/viz/common/surfaces/surface_id.h"
#include "base/component_export.h"
#include "third_party/blink/public/mojom/input/input_event_result.mojom-shared.h"
#include "ui/events/blink/did_overscroll_params.h"
#include "ui/events/event.h"

namespace blink {
class WebMouseEvent;
class WebMouseWheelEvent;
}  // namespace blink

namespace ui {
class Cursor;
class LatencyInfo;
}  // namespace ui

namespace input {

class CursorManager;
class RenderInputRouter;
class RenderWidgetHostViewInputObserver;

// RenderWidgetHostViewInput is an interface implemented by an object that acts
// as the "View" portion of a RenderWidgetHost. This interface acts as a helper
// for receiving input events from the surrounding environment and forwarding
// them to the RenderWidgetHost, allowing breaking dependency on RWHV and RWHI
// for input handling including targeting and dispatching. This interface would
// assist VizCompositor Thread to implement input handling in the future with
// InputVizard.
// (https://docs.google.com/document/d/1mcydbkgFCO_TT9NuFE962L8PLJWT2XOfXUAPO88VuKE)
//
// The lifetime of RenderWidgetHostViewInput is tied to the lifetime of the
// renderer process. If the render process dies, the RenderWidgetHostViewInput
// goes away and all references to it must become nullptr.
class COMPONENT_EXPORT(INPUT) RenderWidgetHostViewInput :
    public StylusInterface { … };
}  // namespace input

#endif  // COMPONENTS_INPUT_RENDER_WIDGET_HOST_VIEW_INPUT_H_