ms.android.js-bridge.1.0.2.source-code.jsi.js Maven / Gradle / Ivy
(function (window) {
///////////////////////////////////////////////////////////////////////////
// Promises
var Promise = (function () {
// Store setTimeout reference so promise-polyfill will be unaffected by
// other code modifying setTimeout (like sinon.useFakeTimers())
var setTimeoutFunc = setTimeout;
function noop() {
}
// Use polyfill for setImmediate for performance gains
var asap = (typeof setImmediate === 'function' && setImmediate) ||
function (fn) {
setTimeoutFunc(fn, 1);
};
var onUnhandledRejection = function onUnhandledRejection(err) {
if (typeof console !== 'undefined' && console) {
console.warn('Possible Unhandled Promise Rejection:', err);
}
};
// Polyfill for Function.prototype.bind
function bind(fn, thisArg) {
return function () {
fn.apply(thisArg, arguments);
};
}
function Promise(fn) {
if (typeof this !== 'object') throw new TypeError('Promises must be constructed via new');
if (typeof fn !== 'function') throw new TypeError('not a function');
this._state = 0;
this._handled = false;
this._value = undefined;
this._deferreds = [];
doResolve(fn, this);
}
function handle(self, deferred) {
while (self._state === 3) {
self = self._value;
}
if (self._state === 0) {
self._deferreds.push(deferred);
return;
}
self._handled = true;
asap(function () {
var cb = self._state === 1 ? deferred.onFulfilled : deferred.onRejected;
if (cb === null) {
(self._state === 1 ? resolve : reject)(deferred.promise, self._value);
return;
}
var ret;
try {
ret = cb(self._value);
} catch (e) {
reject(deferred.promise, e);
return;
}
resolve(deferred.promise, ret);
});
}
function resolve(self, newValue) {
try {
// Promise Resolution Procedure: https://github.com/promises-aplus/promises-spec#the-promise-resolution-procedure
if (newValue === self) throw new TypeError('A promise cannot be resolved with itself.');
if (newValue && (typeof newValue === 'object' || typeof newValue === 'function')) {
var then = newValue.then;
if (newValue instanceof Promise) {
self._state = 3;
self._value = newValue;
finale(self);
return;
} else if (typeof then === 'function') {
doResolve(bind(then, newValue), self);
return;
}
}
self._state = 1;
self._value = newValue;
finale(self);
} catch (e) {
reject(self, e);
}
}
function reject(self, newValue) {
self._state = 2;
self._value = newValue;
finale(self);
}
function finale(self) {
if (self._state === 2 && self._deferreds.length === 0) {
asap(function () {
if (!self._handled) {
onUnhandledRejection(self._value);
}
});
}
for (var i = 0, len = self._deferreds.length; i < len; i++) {
handle(self, self._deferreds[i]);
}
self._deferreds = null;
}
function Handler(onFulfilled, onRejected, promise) {
this.onFulfilled = typeof onFulfilled === 'function' ? onFulfilled : null;
this.onRejected = typeof onRejected === 'function' ? onRejected : null;
this.promise = promise;
}
/**
* Take a potentially misbehaving resolver function and make sure
* onFulfilled and onRejected are only called once.
*
* Makes no guarantees about asynchrony.
*/
function doResolve(fn, self) {
var done = false;
try {
fn(function (value) {
if (done) return;
done = true;
resolve(self, value);
}, function (reason) {
if (done) return;
done = true;
reject(self, reason);
});
} catch (ex) {
if (done) return;
done = true;
reject(self, ex);
}
}
Promise.prototype['catch'] = function (onRejected) {
return this.then(null, onRejected);
};
Promise.prototype['finally'] = function (always) {
return this.then(always, always);
};
Promise.prototype.then = function (onFulfilled, onRejected) {
var prom = new (this.constructor)(noop);
handle(this, new Handler(onFulfilled, onRejected, prom));
return prom;
};
Promise.all = function (arr) {
var args = Array.prototype.slice.call(arr);
return new Promise(function (resolve, reject) {
if (args.length === 0) return resolve([]);
var remaining = args.length;
function res(i, val) {
try {
if (val && (typeof val === 'object' || typeof val === 'function')) {
var then = val.then;
if (typeof then === 'function') {
then.call(val, function (val) {
res(i, val);
}, reject);
return;
}
}
args[i] = val;
if (--remaining === 0) {
resolve(args);
}
} catch (ex) {
reject(ex);
}
}
for (var i = 0; i < args.length; i++) {
res(i, args[i]);
}
});
};
Promise.resolve = function (value) {
if (value && typeof value === 'object' && value.constructor === Promise) {
return value;
}
return new Promise(function (resolve) {
resolve(value);
});
};
Promise.reject = function (value) {
return new Promise(function (resolve, reject) {
reject(value);
});
};
Promise.race = function (values) {
return new Promise(function (resolve, reject) {
for (var i = 0, len = values.length; i < len; i++) {
values[i].then(resolve, reject);
}
});
};
return Promise;
})();
///////////////////////////////////////////////////////////////////////////
// Interfaces
var jsi = function (name, method, args) {
var callbackName = jsi.callbackIndex++;
var remoteResource = document.createElement('iframe');
var promise = new Promise(function (resolve, reject) {
/* Setup callback! */
jsi[callbackName] = [resolve, reject];
/* Trigger fire */
remoteResource.setAttribute('src', jsi.prefix + name +
"/" + method + "/" + callbackName +
"/?r=" + Math.random() +
"&args=" + encodeURIComponent(JSON.stringify(args)));
document.head.appendChild(remoteResource);
});
return promise.finally(function () {
remoteResource.remove();
delete jsi[callbackName];
});
};
jsi.prefix = "jsi://";
jsi.callbackIndex = 0;
jsi.event = function (name, data) {
var event = document.createEvent('HTMLEvents');
event.initEvent(name, true, true);
event.data = data;
document.dispatchEvent(event);
};
jsi.define = function (name, methods) {
var obj = {};
for (var methodIndex in methods) {
/* Prevent iteration over toString and such */
if (!methods.hasOwnProperty(methodIndex)) continue;
/* Create a promise based proxy method using jsi */
(function (methodName) {
obj[methodName] = function () {
return jsi(name, methodName, Array.prototype.slice.call(arguments));
};
}(methods[methodIndex]));
}
window[name] = obj;
console.log("JSI: installed interface " + name + " with " + JSON.stringify(methods));
};
window.jsi = jsi;
})(window);© 2015 - 2025 Weber Informatics LLC | Privacy Policy