1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_ROUTER_CLIENT_H_ 6 #define CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_ROUTER_CLIENT_H_ 7 8 #include "content/common/content_export.h" 9 #include "content/port/browser/event_with_latency_info.h" 10 #include "content/port/common/input_event_ack_state.h" 11 #include "content/public/browser/native_web_keyboard_event.h" 12 #include "third_party/WebKit/public/web/WebInputEvent.h" 13 14 namespace ui { 15 struct LatencyInfo; 16 } 17 18 namespace content { 19 20 class CONTENT_EXPORT InputRouterClient { 21 public: 22 virtual ~InputRouterClient() {} 23 24 // Called just prior to events being sent to the renderer, giving the client 25 // a chance to perform in-process event filtering. 26 // The returned disposition will yield the following behavior: 27 // * |NOT_CONSUMED| will result in |input_event| being sent as usual. 28 // * |CONSUMED| or |NO_CONSUMER_EXISTS| will trigger the appropriate ack. 29 // * |UNKNOWN| will result in |input_event| being dropped. 30 virtual InputEventAckState FilterInputEvent( 31 const WebKit::WebInputEvent& input_event, 32 const ui::LatencyInfo& latency_info) = 0; 33 34 // Called each time a WebInputEvent IPC is sent. 35 virtual void IncrementInFlightEventCount() = 0; 36 37 // Called each time a WebInputEvent ACK IPC is received. 38 virtual void DecrementInFlightEventCount() = 0; 39 40 // Called when the renderer notifies that it has touch event handlers. 41 virtual void OnHasTouchEventHandlers(bool has_handlers) = 0; 42 43 // Called upon Send*Event. Should return true if the event should be sent, and 44 // false if the event should be dropped. 45 virtual bool OnSendKeyboardEvent( 46 const NativeWebKeyboardEvent& key_event, 47 const ui::LatencyInfo& latency_info, 48 bool* is_shortcut) = 0; 49 virtual bool OnSendWheelEvent( 50 const MouseWheelEventWithLatencyInfo& wheel_event) = 0; 51 virtual bool OnSendMouseEvent( 52 const MouseEventWithLatencyInfo& mouse_event) = 0; 53 virtual bool OnSendTouchEvent( 54 const TouchEventWithLatencyInfo& touch_event) = 0; 55 virtual bool OnSendGestureEvent( 56 const GestureEventWithLatencyInfo& gesture_event) = 0; 57 virtual bool OnSendMouseEventImmediately( 58 const MouseEventWithLatencyInfo& mouse_event) = 0; 59 virtual bool OnSendTouchEventImmediately( 60 const TouchEventWithLatencyInfo& touch_event) = 0; 61 virtual bool OnSendGestureEventImmediately( 62 const GestureEventWithLatencyInfo& gesture_event) = 0; 63 64 // Called upon event ack receipt from the renderer. 65 virtual void OnKeyboardEventAck(const NativeWebKeyboardEvent& event, 66 InputEventAckState ack_result) = 0; 67 virtual void OnWheelEventAck(const WebKit::WebMouseWheelEvent& event, 68 InputEventAckState ack_result) = 0; 69 virtual void OnTouchEventAck(const TouchEventWithLatencyInfo& event, 70 InputEventAckState ack_result) = 0; 71 virtual void OnGestureEventAck(const WebKit::WebGestureEvent& event, 72 InputEventAckState ack_result) = 0; 73 virtual void OnUnexpectedEventAck(bool bad_message) = 0; 74 }; 75 76 } // namespace content 77 78 #endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_ROUTER_CLIENT_H_ 79
