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_H_ 6 #define CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_ROUTER_H_ 7 8 #include "base/basictypes.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 "ipc/ipc_listener.h" 13 #include "third_party/WebKit/public/web/WebInputEvent.h" 14 15 namespace content { 16 17 class InputRouterClient; 18 19 // The InputRouter allows the embedder to customize how input events are 20 // sent to the renderer, and how responses are dispatched to the browser. 21 // While the router should respect the relative order in which events are 22 // received, it is free to customize when those events are dispatched. 23 class InputRouter : public IPC::Listener { 24 public: 25 virtual ~InputRouter() {} 26 27 // Send and take ownership of the the given InputMsg_*. This should be used 28 // only for event types not associated with a WebInputEvent. Returns true on 29 // success and false otherwise. 30 virtual bool SendInput(IPC::Message* message) = 0; 31 32 // WebInputEvents 33 virtual void SendMouseEvent( 34 const MouseEventWithLatencyInfo& mouse_event) = 0; 35 virtual void SendWheelEvent( 36 const MouseWheelEventWithLatencyInfo& wheel_event) = 0; 37 virtual void SendKeyboardEvent( 38 const NativeWebKeyboardEvent& key_event, 39 const ui::LatencyInfo& latency_info) = 0; 40 virtual void SendGestureEvent( 41 const GestureEventWithLatencyInfo& gesture_event) = 0; 42 virtual void SendTouchEvent( 43 const TouchEventWithLatencyInfo& touch_event) = 0; 44 virtual void SendMouseEventImmediately( 45 const MouseEventWithLatencyInfo& mouse_event) = 0; 46 virtual void SendTouchEventImmediately( 47 const TouchEventWithLatencyInfo& touch_event) = 0; 48 virtual void SendGestureEventImmediately( 49 const GestureEventWithLatencyInfo& gesture_event) = 0; 50 51 // Returns the oldest queued or in-flight keyboard event sent to the router. 52 virtual const NativeWebKeyboardEvent* GetLastKeyboardEvent() const = 0; 53 54 // Returns |true| if the caller should immediately forward touch events to the 55 // router. When |false|, the caller can forego sending touch events, and 56 // instead consume them directly. 57 virtual bool ShouldForwardTouchEvent() const = 0; 58 59 // Returns |true| if the caller should immediately forward the provided 60 // |gesture_event| to the router. 61 virtual bool ShouldForwardGestureEvent( 62 const GestureEventWithLatencyInfo& gesture_event) const = 0; 63 64 // Returns |true| if the router has any queued or in-flight gesture events. 65 virtual bool HasQueuedGestureEvents() const = 0; 66 }; 67 68 } // namespace content 69 70 #endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_ROUTER_H_ 71
