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// Copyright 2013 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 CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_ROUTER_H_
#define CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_ROUTER_H_
#include "cc/input/touch_action.h"
#include "content/browser/renderer_host/event_with_latency_info.h"
#include "content/browser/renderer_host/input/gesture_event_queue.h"
#include "content/browser/renderer_host/input/passthrough_touch_event_queue.h"
#include "content/common/widget.mojom.h"
#include "content/public/browser/native_web_keyboard_event.h"
#include "content/public/common/input_event_ack_state.h"
#include "ipc/ipc_listener.h"
#include "third_party/blink/public/platform/web_input_event.h"
namespace content {
// The InputRouter allows the embedder to customize how input events are
// sent to the renderer, and how responses are dispatched to the browser.
// While the router should respect the relative order in which events are
// received, it is free to customize when those events are dispatched.
class InputRouter : public IPC::Listener {
public:
struct CONTENT_EXPORT Config {
Config();
GestureEventQueue::Config gesture_config;
PassthroughTouchEventQueue::Config touch_config;
};
~InputRouter() override {}
// WebInputEvents
virtual void SendMouseEvent(
const MouseEventWithLatencyInfo& mouse_event) = 0;
virtual void SendWheelEvent(
const MouseWheelEventWithLatencyInfo& wheel_event) = 0;
virtual void SendKeyboardEvent(
const NativeWebKeyboardEventWithLatencyInfo& key_event) = 0;
virtual void SendGestureEvent(
const GestureEventWithLatencyInfo& gesture_event) = 0;
virtual void SendTouchEvent(
const TouchEventWithLatencyInfo& touch_event) = 0;
// Notify the router about whether the current page is mobile-optimized (i.e.,
// the site has a mobile-friendly viewport).
virtual void NotifySiteIsMobileOptimized(bool is_mobile_optimized) = 0;
// Whether there are any events pending dispatch to or ack from the renderer.
virtual bool HasPendingEvents() const = 0;
// A scale factor to scale the coordinate in WebInputEvent from DIP
// to viewport.
virtual void SetDeviceScaleFactor(float device_scale_factor) = 0;
// Sets the frame tree node id of associated frame, used when tracing
// input event latencies to relate events to their target frames. Since
// input always flows to Local Frame Roots, the |frameTreeNodeId| is
// relative to the Frame associated with the Local Frame Root for the
// widget owning this InputRouter.
virtual void SetFrameTreeNodeId(int frameTreeNodeId) = 0;
// Return the currently allowed touch-action.
virtual base::Optional<cc::TouchAction> AllowedTouchAction() = 0;
virtual void SetForceEnableZoom(bool enabled) = 0;
// Associate this InputRouter with a remote host channel.
virtual void BindHost(mojom::WidgetInputHandlerHostRequest request,
bool frame_handler) = 0;
// Used to stop an active fling if such exists.
virtual void StopFling() = 0;
// Used to check if a fling cancellation is deferred due to boosting or not.
virtual bool FlingCancellationIsDeferred() = 0;
// Called when a set-touch-action message is received from the renderer
// for a touch start event that is currently in flight.
virtual void OnSetTouchAction(cc::TouchAction touch_action) = 0;
// In the case when a gesture event is bubbled from a child frame to the main
// frame, we set the touch action in the main frame Auto even if there is no
// pending touch start.
virtual void ForceSetTouchActionAuto() = 0;
};
} // namespace content
#endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_ROUTER_H_
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