| // 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 "base/callback_forward.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 "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: |
| struct CONTENT_EXPORT Config { |
| Config(); |
| GestureEventQueue::Config gesture_config; |
| PassthroughTouchEventQueue::Config touch_config; |
| }; |
| |
| virtual ~InputRouter() = default; |
| |
| // Note: if the event is processed immediately, the supplied callback is run |
| // *synchronously*. If |this| is destroyed while waiting on a result from |
| // the renderer, then callbacks are *not* run. |
| using MouseEventCallback = |
| base::OnceCallback<void(const MouseEventWithLatencyInfo& event, |
| InputEventAckSource ack_source, |
| InputEventAckState ack_result)>; |
| virtual void SendMouseEvent(const MouseEventWithLatencyInfo& mouse_event, |
| MouseEventCallback event_result_callback) = 0; |
| |
| virtual void SendWheelEvent( |
| const MouseWheelEventWithLatencyInfo& wheel_event) = 0; |
| |
| using KeyboardEventCallback = base::OnceCallback<void( |
| const NativeWebKeyboardEventWithLatencyInfo& event, |
| InputEventAckSource ack_source, |
| InputEventAckState ack_result)>; |
| virtual void SendKeyboardEvent( |
| const NativeWebKeyboardEventWithLatencyInfo& key_event, |
| KeyboardEventCallback event_result_callback) = 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; |
| |
| // Return the currently active touch-action. |
| virtual base::Optional<cc::TouchAction> ActiveTouchAction() = 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; |
| |
| // Called when the renderer notifies a change in whether or not it has touch |
| // event handlers registered. |
| virtual void OnHasTouchEventHandlers(bool has_handlers) = 0; |
| |
| // Will resolve the given callback once all prior input has been fully |
| // propagated through the system such that subsequent input will be subject |
| // to its effects. e.g. Input that follows a scroll gesture that affects |
| // OOPIF hit-testing will need to wait until updated CompositorFrames have |
| // been submitted to the browser. |
| virtual void WaitForInputProcessed(base::OnceClosure callback) = 0; |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_ROUTER_H_ |