1 /*
2  * Copyright (C) 2023 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.systemui.keyevent.domain.interactor
18 
19 import android.view.KeyEvent
20 import com.android.systemui.back.domain.interactor.BackActionInteractor
21 import com.android.systemui.dagger.SysUISingleton
22 import com.android.systemui.keyguard.domain.interactor.KeyguardKeyEventInteractor
23 import javax.inject.Inject
24 
25 /**
26  * Sends key events to the appropriate interactors and then acts upon key events that haven't
27  * already been handled but should be handled by SystemUI.
28  *
29  * To observe any key event states, see [KeyEventInteractor].
30  */
31 @SysUISingleton
32 class SysUIKeyEventHandler
33 @Inject
34 constructor(
35     private val backActionInteractor: BackActionInteractor,
36     private val keyguardKeyEventInteractor: KeyguardKeyEventInteractor,
37 ) {
dispatchKeyEventnull38     fun dispatchKeyEvent(event: KeyEvent): Boolean {
39         if (keyguardKeyEventInteractor.dispatchKeyEvent(event)) {
40             return true
41         }
42 
43         when (event.keyCode) {
44             KeyEvent.KEYCODE_BACK -> {
45                 if (event.handleAction()) {
46                     backActionInteractor.onBackRequested()
47                 }
48                 return true
49             }
50         }
51         return false
52     }
53 
interceptMediaKeynull54     fun interceptMediaKey(event: KeyEvent): Boolean {
55         return keyguardKeyEventInteractor.interceptMediaKey(event)
56     }
57 
dispatchKeyEventPreImenull58     fun dispatchKeyEventPreIme(event: KeyEvent): Boolean {
59         return keyguardKeyEventInteractor.dispatchKeyEventPreIme(event)
60     }
61 
62     companion object {
63         // Most actions shouldn't be handled on the down event and instead handled on subsequent
64         // key events like ACTION_UP.
KeyEventnull65         fun KeyEvent.handleAction(): Boolean {
66             return action != KeyEvent.ACTION_DOWN
67         }
68     }
69 }
70