| // 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_CLIENT_H_ |
| #define CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_ROUTER_CLIENT_H_ |
| |
| #include "content/browser/renderer_host/event_with_latency_info.h" |
| #include "content/common/content_export.h" |
| #include "content/common/input/input_event_ack_state.h" |
| #include "content/public/browser/native_web_keyboard_event.h" |
| #include "third_party/WebKit/public/web/WebInputEvent.h" |
| |
| namespace ui { |
| class LatencyInfo; |
| } |
| |
| namespace content { |
| |
| struct DidOverscrollParams; |
| |
| class CONTENT_EXPORT InputRouterClient { |
| public: |
| virtual ~InputRouterClient() {} |
| |
| // Called just prior to events being sent to the renderer, giving the client |
| // a chance to perform in-process event filtering. |
| // The returned disposition will yield the following behavior: |
| // * |NOT_CONSUMED| will result in |input_event| being sent as usual. |
| // * |CONSUMED| or |NO_CONSUMER_EXISTS| will trigger the appropriate ack. |
| // * |UNKNOWN| will result in |input_event| being dropped. |
| virtual InputEventAckState FilterInputEvent( |
| const blink::WebInputEvent& input_event, |
| const ui::LatencyInfo& latency_info) = 0; |
| |
| // Called each time a WebInputEvent IPC is sent. |
| virtual void IncrementInFlightEventCount() = 0; |
| |
| // Called each time a WebInputEvent ACK IPC is received. |
| virtual void DecrementInFlightEventCount() = 0; |
| |
| // Called when the renderer notifies that it has touch event handlers. |
| virtual void OnHasTouchEventHandlers(bool has_handlers) = 0; |
| |
| // Called when the router has finished flushing all events queued at the time |
| // of the call to Flush. The call will typically be asynchronous with |
| // respect to the call to |Flush| on the InputRouter. |
| virtual void DidFlush() = 0; |
| |
| // Called when the router has received an overscroll notification from the |
| // renderer. |
| virtual void DidOverscroll(const DidOverscrollParams& params) = 0; |
| |
| // Called when a renderer fling has terminated. |
| virtual void DidStopFlinging() = 0; |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_ROUTER_CLIENT_H_ |