add extjs 6.0.1 sources

[extjs.git] / extjs / packages / ux / src / google / Api.js

/**\r
 * This base class can be used by derived classes to dynamically require Google API's.\r
 */\r
Ext.define('Ext.ux.google.Api', {\r
    mixins: [\r
        'Ext.mixin.Mashup'\r
    ],\r
\r
    requiredScripts: [\r
        '//www.google.com/jsapi'\r
    ],\r
\r
    statics: {\r
        loadedModules: {\r
            /*\r
             *  feeds: [ callback1, callback2, .... ]  transitions to -> feeds : true  (when complete)\r
             */\r
        }\r
    },\r
\r
    onClassExtended: function(cls, data, hooks) {\r
        var onBeforeClassCreated = hooks.onBeforeCreated,\r
            Api = this; // the Ext.ux.google.Api class\r
\r
        hooks.onBeforeCreated = function(cls, data) {\r
            var me = this,\r
                apis = [],\r
                requiresGoogle = Ext.Array.from(data.requiresGoogle),\r
                loadedModules = Api.loadedModules,\r
                remaining = 0,\r
                callback = function () {\r
                    if (! --remaining) {\r
                        onBeforeClassCreated.call(me, cls, data, hooks);\r
                    }\r
                    Ext.env.Ready.unblock();\r
                },\r
                api, i, length;\r
\r
            /*\r
             *  requiresGoogle: [\r
             *      'feeds',\r
             *      { api: 'feeds', version: '1.x',\r
             *        callback : fn, nocss : true }  //optionals\r
             *  ]\r
             */\r
            length = requiresGoogle.length;\r
\r
            for (i = 0; i < length; ++i) {\r
                if (Ext.isString(api = requiresGoogle[i])) {\r
                    apis.push({ api: api });\r
                } else if(Ext.isObject(api)) {\r
                    apis.push(Ext.apply({}, api));\r
                }\r
            }\r
\r
            Ext.each(apis, function (api) {\r
                var name = api.api,\r
                    version = String(api.version || '1.x'),\r
                    module = loadedModules[name];\r
\r
                if (!module) {\r
                    ++remaining;\r
                    Ext.env.Ready.block();\r
                    loadedModules[name] = module = [ callback ].concat(api.callback || []);\r
\r
                    delete api.api;\r
                    delete api.version;\r
\r
                    //TODO:  window.google assertion?\r
\r
                    google.load(\r
                        name,\r
                        version,\r
                        Ext.applyIf({\r
                            callback    : function () {\r
                                loadedModules[name] = true;\r
\r
                                for (var n = module.length; n-- > 0; ) {\r
                                    module[n]();    //iterate callbacks in reverse\r
                                }\r
                            }\r
                        }, api)\r
                    );\r
\r
                } else if (module !== true) {\r
                    module.push(callback);\r
                }\r
            });\r
\r
            if (!remaining) {\r
                onBeforeClassCreated.call(me, cls, data, hooks);\r
            }\r
        };\r
    }\r
});\r