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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} from '@ohos/common';
23import GestureNavigationExecutors from './GestureNavigationExecutors';
24
25const TAG = 'GestureNavigationManage';
26
27export class GestureNavigationManager {
28  private readonly uri: string | null = null;
29  private helper: any = null;
30  private readonly sGestureNavigationExecutors: GestureNavigationExecutors = GestureNavigationExecutors.getInstance();
31  private touchEventCallback: inputMonitor.TouchEventReceiver | null = null;
32
33  private constructor() {
34    this.uri = settingsDataManager.getUri(CommonConstants.NAVIGATION_BAR_STATUS_KEY);
35    this.helper = settingsDataManager.getHelper(globalThis.desktopContext, this.uri);
36  }
37
38  private setValue(value: string) {
39    settingsDataManager.setValue(this.helper, CommonConstants.NAVIGATION_BAR_STATUS_KEY, value);
40  }
41
42  private getValue() {
43    return settingsDataManager.getValue(this.helper, CommonConstants.NAVIGATION_BAR_STATUS_KEY, '1');
44  }
45
46  /**
47   * Monitor data changes.
48   * @param callback
49   */
50  private registerListenForDataChanges(callback: AsyncCallback<void>) {
51    this.helper = settingsDataManager.getHelper(globalThis.desktopContext, this.uri);
52    Log.showInfo(TAG, "helper:" + this.helper +  "  registerListenForDataChanges uri:" + this.uri);
53    this.helper.on('dataChange', this.uri, callback);
54  }
55
56  initWindowSize(display: any) {
57    if (globalThis.sGestureNavigationExecutors) {
58      globalThis.sGestureNavigationExecutors.setScreenWidth(display.width);
59      globalThis.sGestureNavigationExecutors.setScreenHeight(display.height);
60      this.touchEventCallback = globalThis.sGestureNavigationExecutors.touchEventCallback
61        .bind(globalThis.sGestureNavigationExecutors);
62      settingsDataManager.createDataShareHelper();
63    }
64  }
65
66  private getGestureNavigationStatus() {
67    Log.showDebug(TAG, 'getGestureNavigationStatus enter');
68    let gestureNavigationStatus = null;
69    try{
70      gestureNavigationStatus = this.getValue();
71      Log.showDebug(TAG, `getGestureNavigationStatus gestureNavigationStatus:  ${gestureNavigationStatus}`);
72      this.handleEventSwitches(gestureNavigationStatus);
73      this.registerListenForDataChanges(this.dataChangesCallback.bind(this));
74    }catch (error) {
75      Log.showError(TAG, `getGestureNavigationStatus error: ${JSON.stringify(error)}`);
76    }
77  }
78
79  private dataChangesCallback(data: any) {
80    Log.showInfo(TAG, "dataChangesCallback data:" + data);
81    const getRetValue = this.getValue();
82    this.handleEventSwitches(getRetValue);
83    AppStorage.setOrCreate('NavigationBarStatusValue', getRetValue == '0' ? true : false);
84  }
85
86  private turnOnTouchEventCallback() {
87    Log.showWarn(TAG, 'turnOnTouchEventCallback start');
88    inputMonitor.on('touch', this.touchEventCallback);
89  }
90
91  private turnOffTouchEventCallback() {
92    Log.showWarn(TAG, 'turnOffTouchEventCallback start');
93    inputMonitor.off('touch', this.touchEventCallback);
94  }
95
96  private handleEventSwitches(gestureNavigationStatus: string) {
97    if (gestureNavigationStatus == '0') {
98      this.turnOnTouchEventCallback();
99    } else {
100      this.turnOffTouchEventCallback();
101    }
102  }
103
104  /**
105   * Get the GestureNavigationManage instance.
106   */
107  static getInstance(): GestureNavigationManager {
108    if (globalThis.sGestureNavigationManager == null) {
109      globalThis.sGestureNavigationManager = new GestureNavigationManager();
110    }
111    return globalThis.sGestureNavigationManager;
112  }
113}