| // 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/basictypes.h" |
| #include "content/port/browser/event_with_latency_info.h" |
| #include "content/port/common/input_event_ack_state.h" |
| #include "content/public/browser/native_web_keyboard_event.h" |
| #include "ipc/ipc_listener.h" |
| #include "third_party/WebKit/public/web/WebInputEvent.h" |
| |
| namespace content { |
| |
| class InputRouterClient; |
| |
| // 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: |
| virtual ~InputRouter() {} |
| |
| // Should be called only in response to |SetNeedsFlush| requests made via |
| // the |InputRouterClient|. |
| virtual void Flush() = 0; |
| |
| // Send and take ownership of the the given InputMsg_*. This should be used |
| // only for event types not associated with a WebInputEvent. Returns true on |
| // success and false otherwise. |
| virtual bool SendInput(scoped_ptr<IPC::Message> message) = 0; |
| |
| // WebInputEvents |
| virtual void SendMouseEvent( |
| const MouseEventWithLatencyInfo& mouse_event) = 0; |
| virtual void SendWheelEvent( |
| const MouseWheelEventWithLatencyInfo& wheel_event) = 0; |
| virtual void SendKeyboardEvent( |
| const NativeWebKeyboardEvent& key_event, |
| const ui::LatencyInfo& latency_info, |
| bool is_shortcut) = 0; |
| virtual void SendGestureEvent( |
| const GestureEventWithLatencyInfo& gesture_event) = 0; |
| virtual void SendTouchEvent( |
| const TouchEventWithLatencyInfo& touch_event) = 0; |
| |
| // Returns the oldest queued or in-flight keyboard event sent to the router. |
| virtual const NativeWebKeyboardEvent* GetLastKeyboardEvent() const = 0; |
| |
| // Returns |true| if the caller should immediately forward touch events to the |
| // router. When |false|, the caller can forego sending touch events, and |
| // instead consume them directly. |
| virtual bool ShouldForwardTouchEvent() const = 0; |
| |
| // Allow the router to make more informed input handling decisions based on |
| // the current view. |
| enum ViewFlags { |
| VIEW_FLAGS_NONE = 0, |
| FIXED_PAGE_SCALE = 1 << 0, |
| MOBILE_VIEWPORT = 1 << 1 |
| }; |
| virtual void OnViewUpdated(int view_flags) = 0; |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_ROUTER_H_ |