feat(mobile-accessibility): add Mobile Accessibility plugin (#1505)

* feature(plugin): mobile-accessibility

fix #1304

* fixed linting

* lint

* usage

* optimized promises

src/@ionic-native/plugins/mobile-accessibility/index.ts

@@ -0,0 +1,224 @@
+import { Plugin, Cordova, IonicNativePlugin } from '@ionic-native/core';
+import { Injectable } from '@angular/core';
+
+/**
+ * @name Mobile Accessibility
+ * @description
+ * This plugin exposes information on the status of various accessibility features of mobile operating systems, including, for example, whether a screen reader is running, invert colors is enabled, and the preferred scaling for text.
+ * It also allows an application to send a string to be spoken by the screen reader, or a command to stop the screen reader from speaking.
+ *
+ * @usage
+ * ```typescript
+ * import { MobileAccessibility } from 'ionic-native';
+ *
+ *
+ * constructor(private mobileAccessibility: MobileAccessibility) { }
+ *
+ * ...
+ *
+ * if(this.mobileAccessibility.isScreenReaderRunningCallback();
+ *
+ * ```
+ */
+@Plugin({
+  pluginName: 'MobileAccessibility',
+  plugin: 'https://github.com/phonegap/phonegap-mobile-accessibility.git',
+  pluginRef: 'MobileAccessibilityNotifications',
+  repo: 'https://github.com/phonegap/phonegap-mobile-accessibility',
+  platforms: ['Amazon Fire OS', 'Android', 'iOS']
+})
+@Injectable()
+export class MobileAccessibility extends IonicNativePlugin {
+
+  MobileAccessibilityNotifications: {
+    ANNOUNCEMENT: 'ANNOUNCEMENT',
+    BOLD_TEXT_STATUS_CHANGED: 'BOLD_TEXT_STATUS_CHANGED',
+    CLOSED_CAPTIONING_STATUS_CHANGED: 'CLOSED_CAPTIONING_STATUS_CHANGED',
+    DARKER_SYSTEM_COLORS_STATUS_CHANGED: 'DARKER_SYSTEM_COLORS_STATUS_CHANGED',
+    GRAYSCALE_STATUS_CHANGED: 'GRAYSCALE_STATUS_CHANGED',
+    GUIDED_ACCESS_STATUS_CHANGED: 'GUIDED_ACCESS_STATUS_CHANGED',
+    INVERT_COLORS_STATUS_CHANGED: 'INVERT_COLORS_STATUS_CHANGED',
+    LAYOUT_CHANGED: 'LAYOUT_CHANGED',
+    MONO_AUDIO_STATUS_CHANGED: 'MONO_AUDIO_STATUS_CHANGED',
+    PAGE_SCROLLED: 'PAGE_SCROLLED',
+    REDUCE_MOTION_STATUS_CHANGED: 'REDUCE_MOTION_STATUS_CHANGED',
+    REDUCE_TRANSPARENCY_STATUS_CHANGED: 'REDUCE_TRANSPARENCY_STATUS_CHANGED',
+    SCREEN_CHANGED: 'SCREEN_CHANGED',
+    SCREEN_READER_STATUS_CHANGED: 'SCREEN_READER_STATUS_CHANGED',
+    SPEAK_SCREEN_STATUS_CHANGED: 'SPEAK_SCREEN_STATUS_CHANGED',
+    SPEAK_SELECTION_STATUS_CHANGED: 'SPEAK_SELECTION_STATUS_CHANGED',
+    SWITCH_CONTROL_STATUS_CHANGED: 'SWITCH_CONTROL_STATUS_CHANGED',
+    TOUCH_EXPLORATION_STATUS_CHANGED: 'TOUCH_EXPLORATION_STATUS_CHANGED'
+  };
+
+  /**
+   * Makes an asynchronous call to native MobileAccessibility to determine if a screen reader is running.
+   * @returns result {Promise<boolean>}  A result method to receive the boolean result asynchronously from the native MobileAccessibility plugin.
+   */
+  @Cordova()
+  isScreenReaderRunning(): Promise<boolean> { return; }
+
+  /**
+   * An iOS-specific proxy for the MobileAccessibility.isScreenReaderRunning method
+   * @returns result {Promise<boolean>} A result method to receive the boolean result asynchronously from the native MobileAccessibility plugin.
+   */
+  @Cordova({ platforms: ['iOS'] })
+  isVoiceOverRunningCallback(): Promise<boolean> { return; }
+
+  /**
+   * An Android/Amazon Fire OS-specific proxy for the MobileAccessibility.isScreenReaderRunning method.
+   * @returns result {Promise<boolean>}  A result method to receive the boolean result asynchronously from the native MobileAccessibility plugin.
+   */
+  @Cordova({ platforms: ['Amazon Fire OS', 'Android'] })
+  isTalkBackRunningCallback(): Promise<boolean> { return; }
+
+  /**
+   * On Android, this method returns true if ChromeVox is active and properly initialized with access to the text to speech API in the WebView.
+   * If TalkBack is running but ChromeVox is not active, this method is useful to alert the user of a potential problem.
+   * @returns result {Promise<boolean>} Returns the result
+   */
+  @Cordova({ platforms: ['Amazon Fire OS', 'Android'] })
+  isChromeVoxActive(): Promise<boolean> { return; }
+
+  /**
+   *
+   * @returns result {Promise<boolean>} Returns the result
+   */
+  @Cordova({ platforms: ['iOS'] })
+  isBoldTextEnabledCallback(): Promise<boolean> { return; }
+
+  /**
+   *
+   * @returns result {Promise<boolean>} Returns the result
+   */
+  @Cordova()
+  isClosedCaptioningEnabledCallback(): Promise<boolean> { return; }
+
+  /**
+   *
+   * @returns result {Promise<boolean>} Returns the result
+   */
+  @Cordova({ platforms: ['iOS'] })
+  isDarkerSystemColorsEnabledCallback(): Promise<boolean> { return; }
+
+  /**
+   *
+   * @returns result {Promise<boolean>} Returns the result
+   */
+  @Cordova({ platforms: ['iOS'] })
+  isGrayscaleEnabledCallback(): Promise<boolean> { return; }
+
+  /**
+   *
+   * @returns result {Promise<boolean>} Returns the result
+   */
+  @Cordova({ platforms: ['iOS'] })
+  isGuidedAccessEnabledCallback(): Promise<boolean> { return; }
+
+  /**
+   *
+   * @returns result {Promise<boolean>} Returns the result
+   */
+  @Cordova({ platforms: ['iOS'] })
+  isInvertColorsEnabledCallback(): Promise<boolean> { return; }
+
+  /**
+   *
+   * @returns result {Promise<boolean>} Returns the result
+   */
+  @Cordova({ platforms: ['iOS'] })
+  isMonoAudioEnabledCallback(): Promise<boolean> { return; }
+
+  /**
+   *
+   * @returns result {Promise<boolean>} Returns the result
+   */
+  @Cordova({ platforms: ['iOS'] })
+  isReduceMotionEnabledCallback(): Promise<boolean> { return; }
+
+  /**
+   *
+   * @returns result {Promise<boolean>} Returns the result
+   */
+  @Cordova({ platforms: ['iOS'] })
+  isReduceTransparencyEnabledCallback(): Promise<boolean> { return; }
+
+  /**
+   *
+   * @returns result {Promise<boolean>} Returns the result
+   */
+  @Cordova({ platforms: ['iOS'] })
+  isSpeakScreenEnabledCallback(): Promise<boolean> { return; }
+
+  /**
+   *
+   * @returns result {Promise<boolean>} Returns the result
+   */
+  @Cordova({ platforms: ['iOS'] })
+  isSpeakSelectionEnabledCallback(): Promise<boolean> { return; }
+
+  /**
+   *
+   * @returns result {Promise<boolean>} Returns the result
+   */
+  @Cordova({ platforms: ['iOS'] })
+  isSwitchControlRunningCallback(): Promise<boolean> { return; }
+
+  /**
+   *
+   * @returns result {Promise<boolean>} Returns the result
+   */
+  @Cordova({ platforms: ['Amazon Fire OS', 'Android'] })
+  isTouchExplorationEnabledCallback(): Promise<boolean> { return; }
+
+  /**
+   *
+   * * @returns {Promise<number>} Returns the result
+   */
+  @Cordova()
+  getTextZoomCallback(): Promise<number> { return; }
+
+  /**
+   * @param textZoom {nuber} A percentage value by which text in the WebView should be scaled.
+   */
+  @Cordova({ sync: true })
+  setTextZoom(textZoom: number): void { }
+
+  /**
+   *
+   */
+  @Cordova({ sync: true })
+  updateTextZoom(): void { }
+
+  /**
+   * A Boolean value which specifies whether to use the preferred text zoom of a default percent value of 100.
+   * @param value {boolean} Returns the result
+   */
+  @Cordova({ sync: true })
+  usePreferredTextZoom(value: boolean): void { }
+
+  /**
+   * Posts a notification with a string for the screen reader to announce if it is running.
+   * @param mobileAccessibilityNotification {any}
+   * @param value {string} A string to be announced by a screen reader.
+   * @returns result {Promise<boolean>} Returns the result
+   */
+  @Cordova({ platforms: ['iOS'] })
+  postNotification(mobileAccessibilityNotification: any, value: string): Promise<boolean> { return; }
+
+  /**
+   * Speaks a given string through the screenreader. On Android, if ChromeVox is active, it will use the specified queueMode and properties.
+   * @param value {string}
+   * @param queueMode {mumber}
+   * @param properties {any}
+   */
+  @Cordova({ sync: true })
+  speak(value: string, queueMode?: number, properties?: any): void { }
+
+  /**
+   * Stops speech.
+   */
+  @Cordova({ sync: true })
+  stop(): void { }
+
+}