The {@link Ext.direct.RemotingProvider RemotingProvider} exposes access to - * server side methods on the client (a remote procedure call (RPC) type of - * connection where the client can initiate a procedure on the server).
- * - *This allows for code to be organized in a fashion that is maintainable, - * while providing a clear path between client and server, something that is - * not always apparent when using URLs.
- * - *To accomplish this the server-side needs to describe what classes and methods - * are available on the client-side. This configuration will typically be - * outputted by the server-side Ext.Direct stack when the API description is built.
- */ -Ext.direct.RemotingProvider = Ext.extend(Ext.direct.JsonProvider, { - /** - * @cfg {Object} actions - * Object literal defining the server side actions and methods. For example, if - * the Provider is configured with: - *
-"actions":{ // each property within the 'actions' object represents a server side Class
- "TestAction":[ // array of methods within each server side Class to be
- { // stubbed out on client
- "name":"doEcho",
- "len":1
- },{
- "name":"multiply",// name of method
- "len":2 // The number of parameters that will be used to create an
- // array of data to send to the server side function.
- // Ensure the server sends back a Number, not a String.
- },{
- "name":"doForm",
- "formHandler":true, // direct the client to use specialized form handling method
- "len":1
- }]
-}
- * Note that a Store is not required, a server method can be called at any time. - * In the following example a client side handler is used to call the - * server side method "multiply" in the server-side "TestAction" Class:
- *
-TestAction.multiply(
- 2, 4, // pass two arguments to server, so specify len=2
- // callback function after the server is called
- // result: the result returned by the server
- // e: Ext.Direct.RemotingEvent object
- function(result, e){
- var t = e.getTransaction();
- var action = t.action; // server side Class called
- var method = t.method; // server side method called
- if(e.status){
- var answer = Ext.encode(result); // 8
-
- }else{
- var msg = e.message; // failure message
- }
- }
-);
- * true or false to enable or disable combining of method - * calls. If a number is specified this is the amount of time in milliseconds - * to wait before sending a batched request (defaults to 10).
- *Calls which are received within the specified timeframe will be - * concatenated together and sent in a single request, optimizing the - * application by reducing the amount of round trips that have to be made - * to the server.
- */ - enableBuffer: 10, - - /** - * @cfg {Number} maxRetries - * Number of times to re-attempt delivery on failure of a call. Defaults to 1. - */ - maxRetries: 1, - - /** - * @cfg {Number} timeout - * The timeout to use for each request. Defaults to undefined. - */ - timeout: undefined, - - constructor : function(config){ - Ext.direct.RemotingProvider.superclass.constructor.call(this, config); - this.addEvents( - /** - * @event beforecall - * Fires immediately before the client-side sends off the RPC call. - * By returning false from an event handler you can prevent the call from - * executing. - * @param {Ext.direct.RemotingProvider} provider - * @param {Ext.Direct.Transaction} transaction - */ - 'beforecall', - /** - * @event call - * Fires immediately after the request to the server-side is sent. This does - * NOT fire after the response has come back from the call. - * @param {Ext.direct.RemotingProvider} provider - * @param {Ext.Direct.Transaction} transaction - */ - 'call' - ); - this.namespace = (Ext.isString(this.namespace)) ? Ext.ns(this.namespace) : this.namespace || window; - this.transactions = {}; - this.callBuffer = []; - }, - - // private - initAPI : function(){ - var o = this.actions; - for(var c in o){ - var cls = this.namespace[c] || (this.namespace[c] = {}), - ms = o[c]; - for(var i = 0, len = ms.length; i < len; i++){ - var m = ms[i]; - cls[m.name] = this.createMethod(c, m); - } - } - }, - - // inherited - isConnected: function(){ - return !!this.connected; - }, - - connect: function(){ - if(this.url){ - this.initAPI(); - this.connected = true; - this.fireEvent('connect', this); - }else if(!this.url){ - throw 'Error initializing RemotingProvider, no url configured.'; - } - }, - - disconnect: function(){ - if(this.connected){ - this.connected = false; - this.fireEvent('disconnect', this); - } - }, - - onData: function(opt, success, xhr){ - if(success){ - var events = this.getEvents(xhr); - for(var i = 0, len = events.length; i < len; i++){ - var e = events[i], - t = this.getTransaction(e); - this.fireEvent('data', this, e); - if(t){ - this.doCallback(t, e, true); - Ext.Direct.removeTransaction(t); - } - } - }else{ - var ts = [].concat(opt.ts); - for(var i = 0, len = ts.length; i < len; i++){ - var t = this.getTransaction(ts[i]); - if(t && t.retryCount < this.maxRetries){ - t.retry(); - }else{ - var e = new Ext.Direct.ExceptionEvent({ - data: e, - transaction: t, - code: Ext.Direct.exceptions.TRANSPORT, - message: 'Unable to connect to the server.', - xhr: xhr - }); - this.fireEvent('data', this, e); - if(t){ - this.doCallback(t, e, false); - Ext.Direct.removeTransaction(t); - } - } - } - } - }, - - getCallData: function(t){ - return { - action: t.action, - method: t.method, - data: t.data, - type: 'rpc', - tid: t.tid - }; - }, - - doSend : function(data){ - var o = { - url: this.url, - callback: this.onData, - scope: this, - ts: data, - timeout: this.timeout - }, callData; - - if(Ext.isArray(data)){ - callData = []; - for(var i = 0, len = data.length; i < len; i++){ - callData.push(this.getCallData(data[i])); - } - }else{ - callData = this.getCallData(data); - } - - if(this.enableUrlEncode){ - var params = {}; - params[Ext.isString(this.enableUrlEncode) ? this.enableUrlEncode : 'data'] = Ext.encode(callData); - o.params = params; - }else{ - o.jsonData = callData; - } - Ext.Ajax.request(o); - }, - - combineAndSend : function(){ - var len = this.callBuffer.length; - if(len > 0){ - this.doSend(len == 1 ? this.callBuffer[0] : this.callBuffer); - this.callBuffer = []; - } - }, - - queueTransaction: function(t){ - if(t.form){ - this.processForm(t); - return; - } - this.callBuffer.push(t); - if(this.enableBuffer){ - if(!this.callTask){ - this.callTask = new Ext.util.DelayedTask(this.combineAndSend, this); - } - this.callTask.delay(Ext.isNumber(this.enableBuffer) ? this.enableBuffer : 10); - }else{ - this.combineAndSend(); - } - }, - - doCall : function(c, m, args){ - var data = null, hs = args[m.len], scope = args[m.len+1]; - - if(m.len !== 0){ - data = args.slice(0, m.len); - } - - var t = new Ext.Direct.Transaction({ - provider: this, - args: args, - action: c, - method: m.name, - data: data, - cb: scope && Ext.isFunction(hs) ? hs.createDelegate(scope) : hs - }); - - if(this.fireEvent('beforecall', this, t) !== false){ - Ext.Direct.addTransaction(t); - this.queueTransaction(t); - this.fireEvent('call', this, t); - } - }, - - doForm : function(c, m, form, callback, scope){ - var t = new Ext.Direct.Transaction({ - provider: this, - action: c, - method: m.name, - args:[form, callback, scope], - cb: scope && Ext.isFunction(callback) ? callback.createDelegate(scope) : callback, - isForm: true - }); - - if(this.fireEvent('beforecall', this, t) !== false){ - Ext.Direct.addTransaction(t); - var isUpload = String(form.getAttribute("enctype")).toLowerCase() == 'multipart/form-data', - params = { - extTID: t.tid, - extAction: c, - extMethod: m.name, - extType: 'rpc', - extUpload: String(isUpload) - }; - - // change made from typeof callback check to callback.params - // to support addl param passing in DirectSubmit EAC 6/2 - Ext.apply(t, { - form: Ext.getDom(form), - isUpload: isUpload, - params: callback && Ext.isObject(callback.params) ? Ext.apply(params, callback.params) : params - }); - this.fireEvent('call', this, t); - this.processForm(t); - } - }, - - processForm: function(t){ - Ext.Ajax.request({ - url: this.url, - params: t.params, - callback: this.onData, - scope: this, - form: t.form, - isUpload: t.isUpload, - ts: t - }); - }, - - createMethod : function(c, m){ - var f; - if(!m.formHandler){ - f = function(){ - this.doCall(c, m, Array.prototype.slice.call(arguments, 0)); - }.createDelegate(this); - }else{ - f = function(form, callback, scope){ - this.doForm(c, m, form, callback, scope); - }.createDelegate(this); - } - f.directCfg = { - action: c, - method: m - }; - return f; - }, - - getTransaction: function(opt){ - return opt && opt.tid ? Ext.Direct.getTransaction(opt.tid) : null; - }, - - doCallback: function(t, e){ - var fn = e.status ? 'success' : 'failure'; - if(t && t.cb){ - var hs = t.cb, - result = Ext.isDefined(e.result) ? e.result : e.data; - if(Ext.isFunction(hs)){ - hs(result, e); - } else{ - Ext.callback(hs[fn], hs.scope, [result, e]); - Ext.callback(hs.callback, hs.scope, [result, e]); - } - } - } -}); +/** + * @class Ext.direct.RemotingProvider + * @extends Ext.direct.JsonProvider + * + *The {@link Ext.direct.RemotingProvider RemotingProvider} exposes access to + * server side methods on the client (a remote procedure call (RPC) type of + * connection where the client can initiate a procedure on the server).
+ * + *This allows for code to be organized in a fashion that is maintainable, + * while providing a clear path between client and server, something that is + * not always apparent when using URLs.
+ * + *To accomplish this the server-side needs to describe what classes and methods + * are available on the client-side. This configuration will typically be + * outputted by the server-side Ext.Direct stack when the API description is built.
+ */ +Ext.direct.RemotingProvider = Ext.extend(Ext.direct.JsonProvider, { + /** + * @cfg {Object} actions + * Object literal defining the server side actions and methods. For example, if + * the Provider is configured with: + *
+"actions":{ // each property within the 'actions' object represents a server side Class
+ "TestAction":[ // array of methods within each server side Class to be
+ { // stubbed out on client
+ "name":"doEcho",
+ "len":1
+ },{
+ "name":"multiply",// name of method
+ "len":2 // The number of parameters that will be used to create an
+ // array of data to send to the server side function.
+ // Ensure the server sends back a Number, not a String.
+ },{
+ "name":"doForm",
+ "formHandler":true, // direct the client to use specialized form handling method
+ "len":1
+ }]
+}
+ * Note that a Store is not required, a server method can be called at any time. + * In the following example a client side handler is used to call the + * server side method "multiply" in the server-side "TestAction" Class:
+ *
+TestAction.multiply(
+ 2, 4, // pass two arguments to server, so specify len=2
+ // callback function after the server is called
+ // result: the result returned by the server
+ // e: Ext.Direct.RemotingEvent object
+ function(result, e){
+ var t = e.getTransaction();
+ var action = t.action; // server side Class called
+ var method = t.method; // server side method called
+ if(e.status){
+ var answer = Ext.encode(result); // 8
+
+ }else{
+ var msg = e.message; // failure message
+ }
+ }
+);
+ * true or false to enable or disable combining of method + * calls. If a number is specified this is the amount of time in milliseconds + * to wait before sending a batched request (defaults to 10).
+ *Calls which are received within the specified timeframe will be + * concatenated together and sent in a single request, optimizing the + * application by reducing the amount of round trips that have to be made + * to the server.
+ */ + enableBuffer: 10, + + /** + * @cfg {Number} maxRetries + * Number of times to re-attempt delivery on failure of a call. Defaults to 1. + */ + maxRetries: 1, + + /** + * @cfg {Number} timeout + * The timeout to use for each request. Defaults to undefined. + */ + timeout: undefined, + + constructor : function(config){ + Ext.direct.RemotingProvider.superclass.constructor.call(this, config); + this.addEvents( + /** + * @event beforecall + * Fires immediately before the client-side sends off the RPC call. + * By returning false from an event handler you can prevent the call from + * executing. + * @param {Ext.direct.RemotingProvider} provider + * @param {Ext.Direct.Transaction} transaction + */ + 'beforecall', + /** + * @event call + * Fires immediately after the request to the server-side is sent. This does + * NOT fire after the response has come back from the call. + * @param {Ext.direct.RemotingProvider} provider + * @param {Ext.Direct.Transaction} transaction + */ + 'call' + ); + this.namespace = (Ext.isString(this.namespace)) ? Ext.ns(this.namespace) : this.namespace || window; + this.transactions = {}; + this.callBuffer = []; + }, + + // private + initAPI : function(){ + var o = this.actions; + for(var c in o){ + var cls = this.namespace[c] || (this.namespace[c] = {}), + ms = o[c]; + for(var i = 0, len = ms.length; i < len; i++){ + var m = ms[i]; + cls[m.name] = this.createMethod(c, m); + } + } + }, + + // inherited + isConnected: function(){ + return !!this.connected; + }, + + connect: function(){ + if(this.url){ + this.initAPI(); + this.connected = true; + this.fireEvent('connect', this); + }else if(!this.url){ + throw 'Error initializing RemotingProvider, no url configured.'; + } + }, + + disconnect: function(){ + if(this.connected){ + this.connected = false; + this.fireEvent('disconnect', this); + } + }, + + onData: function(opt, success, xhr){ + if(success){ + var events = this.getEvents(xhr); + for(var i = 0, len = events.length; i < len; i++){ + var e = events[i], + t = this.getTransaction(e); + this.fireEvent('data', this, e); + if(t){ + this.doCallback(t, e, true); + Ext.Direct.removeTransaction(t); + } + } + }else{ + var ts = [].concat(opt.ts); + for(var i = 0, len = ts.length; i < len; i++){ + var t = this.getTransaction(ts[i]); + if(t && t.retryCount < this.maxRetries){ + t.retry(); + }else{ + var e = new Ext.Direct.ExceptionEvent({ + data: e, + transaction: t, + code: Ext.Direct.exceptions.TRANSPORT, + message: 'Unable to connect to the server.', + xhr: xhr + }); + this.fireEvent('data', this, e); + if(t){ + this.doCallback(t, e, false); + Ext.Direct.removeTransaction(t); + } + } + } + } + }, + + getCallData: function(t){ + return { + action: t.action, + method: t.method, + data: t.data, + type: 'rpc', + tid: t.tid + }; + }, + + doSend : function(data){ + var o = { + url: this.url, + callback: this.onData, + scope: this, + ts: data, + timeout: this.timeout + }, callData; + + if(Ext.isArray(data)){ + callData = []; + for(var i = 0, len = data.length; i < len; i++){ + callData.push(this.getCallData(data[i])); + } + }else{ + callData = this.getCallData(data); + } + + if(this.enableUrlEncode){ + var params = {}; + params[Ext.isString(this.enableUrlEncode) ? this.enableUrlEncode : 'data'] = Ext.encode(callData); + o.params = params; + }else{ + o.jsonData = callData; + } + Ext.Ajax.request(o); + }, + + combineAndSend : function(){ + var len = this.callBuffer.length; + if(len > 0){ + this.doSend(len == 1 ? this.callBuffer[0] : this.callBuffer); + this.callBuffer = []; + } + }, + + queueTransaction: function(t){ + if(t.form){ + this.processForm(t); + return; + } + this.callBuffer.push(t); + if(this.enableBuffer){ + if(!this.callTask){ + this.callTask = new Ext.util.DelayedTask(this.combineAndSend, this); + } + this.callTask.delay(Ext.isNumber(this.enableBuffer) ? this.enableBuffer : 10); + }else{ + this.combineAndSend(); + } + }, + + doCall : function(c, m, args){ + var data = null, hs = args[m.len], scope = args[m.len+1]; + + if(m.len !== 0){ + data = args.slice(0, m.len); + } + + var t = new Ext.Direct.Transaction({ + provider: this, + args: args, + action: c, + method: m.name, + data: data, + cb: scope && Ext.isFunction(hs) ? hs.createDelegate(scope) : hs + }); + + if(this.fireEvent('beforecall', this, t) !== false){ + Ext.Direct.addTransaction(t); + this.queueTransaction(t); + this.fireEvent('call', this, t); + } + }, + + doForm : function(c, m, form, callback, scope){ + var t = new Ext.Direct.Transaction({ + provider: this, + action: c, + method: m.name, + args:[form, callback, scope], + cb: scope && Ext.isFunction(callback) ? callback.createDelegate(scope) : callback, + isForm: true + }); + + if(this.fireEvent('beforecall', this, t) !== false){ + Ext.Direct.addTransaction(t); + var isUpload = String(form.getAttribute("enctype")).toLowerCase() == 'multipart/form-data', + params = { + extTID: t.tid, + extAction: c, + extMethod: m.name, + extType: 'rpc', + extUpload: String(isUpload) + }; + + // change made from typeof callback check to callback.params + // to support addl param passing in DirectSubmit EAC 6/2 + Ext.apply(t, { + form: Ext.getDom(form), + isUpload: isUpload, + params: callback && Ext.isObject(callback.params) ? Ext.apply(params, callback.params) : params + }); + this.fireEvent('call', this, t); + this.processForm(t); + } + }, + + processForm: function(t){ + Ext.Ajax.request({ + url: this.url, + params: t.params, + callback: this.onData, + scope: this, + form: t.form, + isUpload: t.isUpload, + ts: t + }); + }, + + createMethod : function(c, m){ + var f; + if(!m.formHandler){ + f = function(){ + this.doCall(c, m, Array.prototype.slice.call(arguments, 0)); + }.createDelegate(this); + }else{ + f = function(form, callback, scope){ + this.doForm(c, m, form, callback, scope); + }.createDelegate(this); + } + f.directCfg = { + action: c, + method: m + }; + return f; + }, + + getTransaction: function(opt){ + return opt && opt.tid ? Ext.Direct.getTransaction(opt.tid) : null; + }, + + doCallback: function(t, e){ + var fn = e.status ? 'success' : 'failure'; + if(t && t.cb){ + var hs = t.cb, + result = Ext.isDefined(e.result) ? e.result : e.data; + if(Ext.isFunction(hs)){ + hs(result, e); + } else{ + Ext.callback(hs[fn], hs.scope, [result, e]); + Ext.callback(hs.callback, hs.scope, [result, e]); + } + } + } +}); Ext.Direct.PROVIDERS['remoting'] = Ext.direct.RemotingProvider; \ No newline at end of file