1 /*
2  * Copyright (C) 2022 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef ACCESSIBLE_ABILITY_LISTENER_H
17 #define ACCESSIBLE_ABILITY_LISTENER_H
18 
19 #include "accessibility_event_info.h"
20 
21 namespace OHOS {
22 namespace MMI {
23 class KeyEvent;
24 }
25 namespace Accessibility {
26 class AccessibleAbilityListener {
27 public:
28     virtual ~AccessibleAbilityListener() = default;
29 
30     /**
31      * @brief Called when an accessibility is connected.
32      */
33     virtual void OnAbilityConnected() = 0;
34 
35     /**
36      * @brief Called when an accessibility is disconnected.
37      */
38     virtual void OnAbilityDisconnected() = 0;
39 
40     /**
41      * @brief Called when an accessibility event occurs.
42      * @param eventInfo The information of accessible event.
43      */
44     virtual void OnAccessibilityEvent(const AccessibilityEventInfo &eventInfo) = 0;
45 
46     /**
47      * @brief Called when a key event occurs.
48      * @param keyEvent Indicates the key event to send.
49      * @return Return true if the key event has been consumed, else return return false.
50      */
51     virtual bool OnKeyPressEvent(const std::shared_ptr<MMI::KeyEvent> &keyEvent) = 0;
52 };
53 } // namespace Accessibility
54 } // namespace OHOS
55 #endif // ACCESSIBLE_ABILITY_LISTENER_H