blob: 98b8a998266c1d8811455651984ccb6832492cd9 [file] [log] [blame]
// 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.
#include "ui/events/blink/web_input_event_traits.h"
namespace ui {
// All callbacks invoked from the compositor thread.
class InputHandlerProxyClient {
// Called just before the InputHandlerProxy shuts down.
virtual void WillShutdown() = 0;
// Dispatch a non blocking event to the main thread. This is used when a
// gesture fling from a touchpad is processed and the target only has
// passive event listeners.
virtual void DispatchNonBlockingEventToMainThread(
WebScopedInputEvent event,
const ui::LatencyInfo& latency_info) = 0;
// |HandleInputEventWithLatencyInfo/RouteToTypeSpecificHandler| will respond
// to overscroll by calling the passed in callback. Otherwise |DidOverscroll|
// will be fired.
virtual void DidOverscroll(
const gfx::Vector2dF& accumulated_overscroll,
const gfx::Vector2dF& latest_overscroll_delta,
const gfx::Vector2dF& current_fling_velocity,
const gfx::PointF& causal_event_viewport_point,
const cc::OverscrollBehavior& overscroll_behavior) = 0;
virtual void DidAnimateForInput() = 0;
virtual void DidStartScrollingViewport() = 0;
// Used to send a GSB to the main thread when the scrolling should switch to
// the main thread.
virtual void GenerateScrollBeginAndSendToMainThread(
const blink::WebGestureEvent& update_event) = 0;
virtual void SetWhiteListedTouchAction(
cc::TouchAction touch_action,
uint32_t unique_touch_event_id,
InputHandlerProxy::EventDisposition event_disposition) = 0;
virtual ~InputHandlerProxyClient() {}
} // namespace ui