blob: 8d3e7d4bed2b96d3ef79ad7a686967aaf5a50c74 [file] [log] [blame]
// Copyright 2015 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 <memory>
#include "content/common/content_export.h"
#include "content/common/input/input_event_ack.h"
#include "third_party/blink/public/platform/web_input_event_result.h"
namespace blink {
class WebGestureEvent;
class WebMouseEvent;
namespace gfx {
class Vector2dF;
namespace content {
class RenderWidgetInputHandler;
// Consumers of RenderWidgetInputHandler implement this delegate in order to
// transport input handling information across processes.
class CONTENT_EXPORT RenderWidgetInputHandlerDelegate {
// Called when animations due to focus change have completed (if any).
virtual void FocusChangeComplete() = 0;
// Called to forward a gesture event to the compositor thread, to effect
// the elastic overscroll effect.
virtual void ObserveGestureEventAndResult(
const blink::WebGestureEvent& gesture_event,
const gfx::Vector2dF& unused_delta,
const cc::OverscrollBehavior& overscroll_behavior,
bool event_processed) = 0;
// Notifies that a key event was just handled.
virtual void OnDidHandleKeyEvent() = 0;
// Notifies that an overscroll was completed from Blink.
virtual void OnDidOverscroll(const ui::DidOverscrollParams& params) = 0;
// Notifies the delegate of the |input_handler| managing it.
virtual void SetInputHandler(RenderWidgetInputHandler* input_handler) = 0;
// Call this if virtual keyboard should be displayed, e.g. after a tap on an
// input field on mobile. Note that we do this just by setting a bit in
// text input state and update it to the browser such that browser process can
// be up to date when showing virtual keyboard.
virtual void ShowVirtualKeyboard() = 0;
// Send an update of text input state to the browser process.
virtual void UpdateTextInputState() = 0;
// Clear the text input state.
virtual void ClearTextInputState() = 0;
// Notifies that a gesture event is about to be handled.
// Returns true if no further handling is needed. In that case, the event
// won't be sent to WebKit.
virtual bool WillHandleGestureEvent(const blink::WebGestureEvent& event) = 0;
// Notifies that a mouse event is about to be handled.
// Returns true if no further handling is needed. In that case, the event
// won't be sent to WebKit or trigger DidHandleMouseEvent().
virtual bool WillHandleMouseEvent(const blink::WebMouseEvent& event) = 0;
virtual ~RenderWidgetInputHandlerDelegate() {}
} // namespace content