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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
16import { AsyncCallback} from '@ohos.base';
17import inputMonitor from '@ohos.multimodalInput.inputMonitor';
18import {
19  Log,
20  CommonConstants,
21  settingsDataManager,
22  localEventManager,
23  EventConstants
24} from '@ohos/common';
25import dataShare from '@ohos.data.dataShare';
26import GestureNavigationExecutors from './GestureNavigationExecutors';
27import display from '@ohos.display';
28
29const TAG = 'GestureNavigationManage';
30
31export class GestureNavigationManager {
32  private readonly uri: string | null = null;
33  private helper: dataShare.DataShareHelper;
34  private MAX_RETRY_TIME = 10;
35  private readonly sGestureNavigationExecutors: GestureNavigationExecutors = GestureNavigationExecutors.getInstance();
36  private touchEventCallback: inputMonitor.TouchEventReceiver | null = null;
37
38  private constructor() {
39    this.uri = settingsDataManager.getUri(CommonConstants.NAVIGATION_BAR_STATUS_KEY);
40    this.helper = settingsDataManager.getHelper(globalThis.desktopContext, this.uri);
41  }
42
43  private setValue(value: string) {
44    settingsDataManager.setValue(this.helper, CommonConstants.NAVIGATION_BAR_STATUS_KEY, value);
45  }
46
47  private getValue() {
48    return settingsDataManager.getValue(this.helper, CommonConstants.NAVIGATION_BAR_STATUS_KEY, '1');
49  }
50
51  /**
52   * Monitor data changes.
53   * @param callback
54   */
55  private registerListenForDataChanges(callback: AsyncCallback<void>) {
56    this.helper = settingsDataManager.getHelper(globalThis.desktopContext, this.uri);
57    Log.showInfo(TAG, 'helper:' + this.helper +  'registerListenForDataChanges uri:' + this.uri);
58    this.helper.on('dataChange', this.uri, callback);
59  }
60
61  initWindowSize(display: display.Display) {
62    if (globalThis.sGestureNavigationExecutors) {
63      globalThis.sGestureNavigationExecutors.setScreenWidth(display.width);
64      globalThis.sGestureNavigationExecutors.setScreenHeight(display.height);
65      this.touchEventCallback = globalThis.sGestureNavigationExecutors.touchEventCallback
66        .bind(globalThis.sGestureNavigationExecutors);
67      settingsDataManager.createDataShareHelper(this.MAX_RETRY_TIME);
68    }
69  }
70
71  private getGestureNavigationStatus() {
72    Log.showDebug(TAG, 'getGestureNavigationStatus enter');
73    let gestureNavigationStatus = null;
74    try {
75      gestureNavigationStatus = this.getValue();
76      Log.showDebug(TAG, `getGestureNavigationStatus gestureNavigationStatus:  ${gestureNavigationStatus}`);
77      this.handleEventSwitches(gestureNavigationStatus);
78
79      // 初始化时保持弹窗的距离底部的位置和（打开/关闭）三键时的位置一致
80      AppStorage.setOrCreate('NavigationBarStatusValue', gestureNavigationStatus === '0' ? true : false);
81
82      this.registerListenForDataChanges(this.dataChangesCallback.bind(this));
83    } catch (error) {
84      Log.showError(TAG, `getGestureNavigationStatus error: ${JSON.stringify(error)}`);
85    }
86  }
87
88  private dataChangesCallback(data: any) {
89    Log.showInfo(TAG, 'dataChangesCallback data:' + data);
90    const getRetValue = this.getValue();
91    this.handleEventSwitches(getRetValue);
92    AppStorage.setOrCreate('NavigationBarStatusValue', getRetValue === '0' ? true : false);
93    localEventManager.sendLocalEventSticky(EventConstants.EVENT_NAVIGATOR_BAR_STATUS_CHANGE, getRetValue);
94  }
95
96  private turnOnTouchEventCallback() {
97    Log.showWarn(TAG, 'turnOnTouchEventCallback start');
98    inputMonitor.on('touch', this.touchEventCallback);
99  }
100
101  private turnOffTouchEventCallback() {
102    Log.showWarn(TAG, 'turnOffTouchEventCallback start');
103    inputMonitor.off('touch', this.touchEventCallback);
104  }
105
106  private handleEventSwitches(gestureNavigationStatus: string) {
107    if (gestureNavigationStatus == '0') {
108      this.turnOnTouchEventCallback();
109    } else {
110      this.turnOffTouchEventCallback();
111    }
112  }
113
114  /**
115   * Get the GestureNavigationManage instance.
116   */
117  static getInstance(): GestureNavigationManager {
118    if (globalThis.sGestureNavigationManager == null) {
119      globalThis.sGestureNavigationManager = new GestureNavigationManager();
120    }
121    return globalThis.sGestureNavigationManager;
122  }
123}