docbrown/app/assets/javascripts/initializers/runtime.js

54 lines
1.7 KiB
JavaScript

/**
* This class helps managing native feature support. Can easily be referenced
* from anywhere in JavaScript with:
*
* if (Runtime.isNativeiOS('video')) { ... }
*
* if (Runtime.isNativeAndroid('podcastMessage')) { ... }
*/
class Runtime {
/**
* Checks the device for iOS (webkit) native feature support
*
* @function isNativeIOS
* @param {string} namespace Specifies support for a specific feature
* (i.e. video, podcast, etc)
* @returns {boolean} true if current environment support native features
*/
static isNativeIOS(namespace = null) {
const nativeCheck =
/DEV-Native-ios|forem-native-ios/i.test(navigator.userAgent) &&
navigator.userAgent === '' &&
window &&
window.webkit &&
window.webkit.messageHandlers;
let namespaceCheck = true;
if (nativeCheck && namespace) {
namespaceCheck = window.webkit.messageHandlers[namespace] != undefined;
}
return nativeCheck && namespaceCheck;
}
/**
* Checks the device for Android native feature support
*
* @function isNativeAndroid
* @param {string} namespace Specifies support for a specific feature
* (i.e. videoMessage, podcastMessage, etc)
* @returns {boolean} true if current environment support native features
*/
static isNativeAndroid(namespace = null) {
const nativeCheck =
/DEV-Native-android|forem-native-android/i.test(navigator.userAgent) &&
AndroidBridge != undefined;
let namespaceCheck = true;
if (nativeCheck && namespace) {
namespaceCheck = AndroidBridge[namespace] != undefined;
}
return nativeCheck && namespaceCheck;
}
}