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// 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/common/content_export.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 "third_party/WebKit/public/web/WebInputEvent.h"
namespace ui {
struct LatencyInfo;
}
namespace content {
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 WebKit::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 upon Send*Event. Should return true if the event should be sent, and
// false if the event should be dropped.
virtual bool OnSendKeyboardEvent(
const NativeWebKeyboardEvent& key_event,
const ui::LatencyInfo& latency_info,
bool* is_shortcut) = 0;
virtual bool OnSendWheelEvent(
const MouseWheelEventWithLatencyInfo& wheel_event) = 0;
virtual bool OnSendMouseEvent(
const MouseEventWithLatencyInfo& mouse_event) = 0;
virtual bool OnSendTouchEvent(
const TouchEventWithLatencyInfo& touch_event) = 0;
virtual bool OnSendGestureEvent(
const GestureEventWithLatencyInfo& gesture_event) = 0;
virtual bool OnSendMouseEventImmediately(
const MouseEventWithLatencyInfo& mouse_event) = 0;
virtual bool OnSendTouchEventImmediately(
const TouchEventWithLatencyInfo& touch_event) = 0;
virtual bool OnSendGestureEventImmediately(
const GestureEventWithLatencyInfo& gesture_event) = 0;
// Called upon event ack receipt from the renderer.
virtual void OnKeyboardEventAck(const NativeWebKeyboardEvent& event,
InputEventAckState ack_result) = 0;
virtual void OnWheelEventAck(const WebKit::WebMouseWheelEvent& event,
InputEventAckState ack_result) = 0;
virtual void OnTouchEventAck(const TouchEventWithLatencyInfo& event,
InputEventAckState ack_result) = 0;
virtual void OnGestureEventAck(const WebKit::WebGestureEvent& event,
InputEventAckState ack_result) = 0;
virtual void OnUnexpectedEventAck(bool bad_message) = 0;
};
} // namespace content
#endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_ROUTER_CLIENT_H_
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