ywapi.js

ywapi.js

(function () {
  /**
   *  YWApiCore
   */
  YWApiCore = {
    __GLOBAL_FUNC_INDEX__: 0,

    invokeClientMethod: function (module, name, parameters, callback) {
      var url = "mm://" + module + "/" + name + "?p=" + encodeURIComponent(JSON.stringify(parameters || {}));
      if (callback) {
        var name;
        if (typeof callback == "function") {
          name = YWApiCore.createGlobalFuncForCallback(callback);
        } else {
          name = callback;
        }

        url = url + "&cb=" + name;
      }
      console.log("[API]" + url);
      window.webkit.messageHandlers.YYWKWebViewAPI.postMessage(url);
    },

    createGlobalFuncForCallback: function (callback) {
      if (callback) {
        var name = "__GLOBAL_CALLBACK__" + YWApiCore.__GLOBAL_FUNC_INDEX__++;
        window[name] = function () {
          var args = arguments;
          var func = typeof callback == "function" ? callback : window[callback];
          //we need to use setimeout here to avoid ui thread being frezzen
          setTimeout(function () {
            func.apply(null, args);
          }, 0);
        };
        return name;
      }
      return null;
    },

    invokeWebMethod: function (callback, returnValue) {
      YWApiCore.invokeCallbackWithArgs(callback, [returnValue]);
    },

    invokeCallbackWithArgs: function (callback, args) {
      if (callback) {
        var func = null;
        var tmp;
        if (typeof callback == "function") {
          func = callback;
        } else if ((tmp = window[callback]) && typeof tmp == "function") {
          func = tmp;
        }
        if (func) {
          setTimeout(function () {
            func.apply(null, args);
          }, 0);
        }
      }
    },
  };
})();