define([
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"../_base/array", "../_base/declare", "../_base/lang", "./RpcService", "../io/script"],
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function(array, declare, lang, RpcService, script){
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// module:
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// dojo/rpc/JsonpService
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return declare("dojo.rpc.JsonpService", RpcService, {
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// summary:
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// Generic JSONP service. Minimally extends RpcService to allow
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// easy definition of nearly any JSONP style service. Example
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// SMD files exist in dojox.data
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constructor: function(args, requiredArgs){
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if(this.required){
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if(requiredArgs){
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lang.mixin(this.required, requiredArgs);
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}
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array.forEach(this.required, function(req){
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if(req=="" || req==undefined){
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throw new Error("Required Service Argument not found: "+req);
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}
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});
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}
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},
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strictArgChecks: false,
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bind: function(method, parameters, deferredRequestHandler, url){
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// summary:
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// JSONP bind method. Takes remote method, parameters,
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// deferred, and a url, calls createRequest to make a JSON-RPC
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// envelope and passes that off with bind.
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// method: string
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// The name of the method we are calling
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// parameters: array
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// The parameters we are passing off to the method
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// deferredRequestHandler: deferred
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// The Deferred object for this particular request
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var def = script.get({
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url: url||this.serviceUrl,
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callbackParamName: this.callbackParamName||"callback",
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content: this.createRequest(parameters),
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timeout: this.timeout,
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handleAs: "json",
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preventCache: true
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});
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def.addCallbacks(this.resultCallback(deferredRequestHandler), this.errorCallback(deferredRequestHandler));
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},
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createRequest: function(parameters){
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// summary:
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// create a JSONP req
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// params: array
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// The array of parameters for this request;
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var params = (lang.isArrayLike(parameters) && parameters.length==1) ?
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parameters[0] : {};
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lang.mixin(params,this.required);
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return params;
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}
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});
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});
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