blob: d2eaa35e0f81bd2f7c257e7e0af5cf6294504ebd (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
// Copyright 2018 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 UI_EVENTS_ANDROID_EVENT_HANDLER_ANDROID_H_
#define UI_EVENTS_ANDROID_EVENT_HANDLER_ANDROID_H_
#include "base/optional.h"
#include "base/time/time.h"
#include "ui/events/events_export.h"
namespace ui {
class DragEventAndroid;
class GestureEventAndroid;
class KeyEventAndroid;
class MotionEventAndroid;
// Dispatches events to appropriate targets. The default implementations of
// all of the specific handlers do nothing. Implementations should set
// themselves to the ViewAndroid in the view tree to get the calls routed.
// Use bool return type to stop propagating the call i.e. overriden method
// should return true to indicate that the event was handled and stop
// the processing.
class EVENTS_EXPORT EventHandlerAndroid {
public:
virtual bool OnDragEvent(const DragEventAndroid& event);
virtual bool OnTouchEvent(const MotionEventAndroid& event);
virtual bool OnMouseEvent(const MotionEventAndroid& event);
virtual bool OnMouseWheelEvent(const MotionEventAndroid& event);
virtual bool OnGestureEvent(const GestureEventAndroid& event);
virtual void OnSizeChanged();
virtual void OnPhysicalBackingSizeChanged(
base::Optional<base::TimeDelta> deadline_override);
virtual void OnBrowserControlsHeightChanged();
virtual void OnControlsResizeViewChanged();
virtual bool OnGenericMotionEvent(const MotionEventAndroid& event);
virtual bool OnKeyUp(const KeyEventAndroid& event);
virtual bool DispatchKeyEvent(const KeyEventAndroid& event);
virtual bool ScrollBy(float delta_x, float delta_y);
virtual bool ScrollTo(float x, float y);
};
} // namespace ui
#endif // UI_EVENTS_ANDROID_EVENT_HANDLER_ANDROID_H_
|
