/** - * @class Ext.direct.RemotingProvider - * @extends Ext.direct.JsonProvider - * - *- - \ No newline at end of file + + + + +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:
- *- * In the example above, the server side "multiply" function will be passed two - * arguments (2 and 4). The "multiply" method should return the value 8 which will be - * available as the result in the example above. - */ - - /** - * @cfg {String/Object} namespace - * Namespace for the Remoting Provider (defaults to the browser global scope of window). - * Explicitly specify the namespace Object, or specify a String to have a - * {@link Ext#namespace namespace created} implicitly. - */ - - /** - * @cfg {String} url - * Required. The url to connect to the {@link Ext.Direct} server-side router. - */ - - /** - * @cfg {String} enableUrlEncode - * Specify which param will hold the arguments for the method. - * Defaults to 'data'. - */ - - /** - * @cfg {Number/Boolean} enableBuffer - *-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. - */ - maxRetries: 1, - - 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 = (typeof this.namespace === 'string') ? 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] = {}); - var 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]; - var 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 - }; - - // send only needed data - var 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[typeof this.enableUrlEncode == 'string' ? 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(typeof this.enableBuffer == 'number' ? 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; - var 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;
/** + * @class Ext.direct.RemotingProvider + * @extends Ext.direct.JsonProvider + * + * <p>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).</p> + * + * <p>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.</p> + * + * <p>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.</p> + */ +Ext.define('Ext.direct.RemotingProvider', { + + /* Begin Definitions */ + + alias: 'direct.remotingprovider', + + extend: 'Ext.direct.JsonProvider', + + requires: [ + 'Ext.util.MixedCollection', + 'Ext.util.DelayedTask', + 'Ext.direct.Transaction', + 'Ext.direct.RemotingMethod' + ], + + /* End Definitions */ + + /** + * @cfg {Object} actions + * Object literal defining the server side actions and methods. For example, if + * the Provider is configured with: + * <pre><code> +"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 + }] +} + * </code></pre> + * <p>Note that a Store is not required, a server method can be called at any time. + * In the following example a <b>client side</b> handler is used to call the + * server side method "multiply" in the server-side "TestAction" Class:</p> + * <pre><code> +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 + } + } +); + * </code></pre> + * In the example above, the server side "multiply" function will be passed two + * arguments (2 and 4). The "multiply" method should return the value 8 which will be + * available as the <tt>result</tt> in the example above. + */ + + /** + * @cfg {String/Object} namespace + * Namespace for the Remoting Provider (defaults to the browser global scope of <i>window</i>). + * Explicitly specify the namespace Object, or specify a String to have a + * {@link Ext#namespace namespace created} implicitly. + */ + + /** + * @cfg {String} url + * <b>Required</b>. The url to connect to the {@link Ext.direct.Manager} server-side router. + */ + + /** + * @cfg {String} enableUrlEncode + * Specify which param will hold the arguments for the method. + * Defaults to <tt>'data'</tt>. + */ + + /** + * @cfg {Number/Boolean} enableBuffer + * <p><tt>true</tt> or <tt>false</tt> 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.</p> + * <br><p>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.</p> + */ + enableBuffer: 10, + + /** + * @cfg {Number} maxRetries + * Number of times to re-attempt delivery on failure of a call. + */ + maxRetries: 1, + + /** + * @cfg {Number} timeout + * The timeout to use for each request. + */ + timeout: undefined, + + constructor : function(config){ + var me = this; + me.callParent(arguments); + me.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 + * @param {Object} meta The meta data + */ + '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 + * @param {Object} meta The meta data + */ + 'call' + ); + me.namespace = (Ext.isString(me.namespace)) ? Ext.ns(me.namespace) : me.namespace || window; + me.transactions = Ext.create('Ext.util.MixedCollection'); + me.callBuffer = []; + }, + + /** + * Initialize the API + * @private + */ + initAPI : function(){ + var actions = this.actions, + namespace = this.namespace, + action, + cls, + methods, + i, + len, + method; + + for (action in actions) { + cls = namespace[action]; + if (!cls) { + cls = namespace[action] = {}; + } + methods = actions[action]; + + for (i = 0, len = methods.length; i < len; ++i) { + method = Ext.create('Ext.direct.RemotingMethod', methods[i]); + cls[method.name] = this.createHandler(action, method); + } + } + }, + + /** + * Create a handler function for a direct call. + * @private + * @param {String} action The action the call is for + * @param {Object} method The details of the method + * @return {Function} A JS function that will kick off the call + */ + createHandler : function(action, method){ + var me = this, + handler; + + if (!method.formHandler) { + handler = function(){ + me.configureRequest(action, method, Array.prototype.slice.call(arguments, 0)); + }; + } else { + handler = function(form, callback, scope){ + me.configureFormRequest(action, method, form, callback, scope); + }; + } + handler.directCfg = { + action: action, + method: method + }; + return handler; + }, + + // inherit docs + isConnected: function(){ + return !!this.connected; + }, + + // inherit docs + connect: function(){ + var me = this; + + if (me.url) { + me.initAPI(); + me.connected = true; + me.fireEvent('connect', me); + } else if(!me.url) { + //<debug> + Ext.Error.raise('Error initializing RemotingProvider, no url configured.'); + //</debug> + } + }, + + // inherit docs + disconnect: function(){ + var me = this; + + if (me.connected) { + me.connected = false; + me.fireEvent('disconnect', me); + } + }, + + /** + * Run any callbacks related to the transaction. + * @private + * @param {Ext.direct.Transaction} transaction The transaction + * @param {Ext.direct.Event} event The event + */ + runCallback: function(transaction, event){ + var funcName = event.status ? 'success' : 'failure', + callback, + result; + + if (transaction && transaction.callback) { + callback = transaction.callback; + result = Ext.isDefined(event.result) ? event.result : event.data; + + if (Ext.isFunction(callback)) { + callback(result, event); + } else { + Ext.callback(callback[funcName], callback.scope, [result, event]); + Ext.callback(callback.callback, callback.scope, [result, event]); + } + } + }, + + /** + * React to the ajax request being completed + * @private + */ + onData: function(options, success, response){ + var me = this, + i = 0, + len, + events, + event, + transaction, + transactions; + + if (success) { + events = me.createEvents(response); + for (len = events.length; i < len; ++i) { + event = events[i]; + transaction = me.getTransaction(event); + me.fireEvent('data', me, event); + if (transaction) { + me.runCallback(transaction, event, true); + Ext.direct.Manager.removeTransaction(transaction); + } + } + } else { + transactions = [].concat(options.transaction); + for (len = transactions.length; i < len; ++i) { + transaction = me.getTransaction(transactions[i]); + if (transaction && transaction.retryCount < me.maxRetries) { + transaction.retry(); + } else { + event = Ext.create('Ext.direct.ExceptionEvent', { + data: null, + transaction: transaction, + code: Ext.direct.Manager.self.exceptions.TRANSPORT, + message: 'Unable to connect to the server.', + xhr: response + }); + me.fireEvent('data', me, event); + if (transaction) { + me.runCallback(transaction, event, false); + Ext.direct.Manager.removeTransaction(transaction); + } + } + } + } + }, + + /** + * Get transaction from XHR options + * @private + * @param {Object} options The options sent to the Ajax request + * @return {Ext.direct.Transaction} The transaction, null if not found + */ + getTransaction: function(options){ + return options && options.tid ? Ext.direct.Manager.getTransaction(options.tid) : null; + }, + + /** + * Configure a direct request + * @private + * @param {String} action The action being executed + * @param {Object} method The being executed + */ + configureRequest: function(action, method, args){ + var me = this, + callData = method.getCallData(args), + data = callData.data, + callback = callData.callback, + scope = callData.scope, + transaction; + + transaction = Ext.create('Ext.direct.Transaction', { + provider: me, + args: args, + action: action, + method: method.name, + data: data, + callback: scope && Ext.isFunction(callback) ? Ext.Function.bind(callback, scope) : callback + }); + + if (me.fireEvent('beforecall', me, transaction, method) !== false) { + Ext.direct.Manager.addTransaction(transaction); + me.queueTransaction(transaction); + me.fireEvent('call', me, transaction, method); + } + }, + + /** + * Gets the Ajax call info for a transaction + * @private + * @param {Ext.direct.Transaction} transaction The transaction + * @return {Object} The call params + */ + getCallData: function(transaction){ + return { + action: transaction.action, + method: transaction.method, + data: transaction.data, + type: 'rpc', + tid: transaction.id + }; + }, + + /** + * Sends a request to the server + * @private + * @param {Object/Array} data The data to send + */ + sendRequest : function(data){ + var me = this, + request = { + url: me.url, + callback: me.onData, + scope: me, + transaction: data, + timeout: me.timeout + }, callData, + enableUrlEncode = me.enableUrlEncode, + i = 0, + len, + params; + + + if (Ext.isArray(data)) { + callData = []; + for (len = data.length; i < len; ++i) { + callData.push(me.getCallData(data[i])); + } + } else { + callData = me.getCallData(data); + } + + if (enableUrlEncode) { + params = {}; + params[Ext.isString(enableUrlEncode) ? enableUrlEncode : 'data'] = Ext.encode(callData); + request.params = params; + } else { + request.jsonData = callData; + } + Ext.Ajax.request(request); + }, + + /** + * Add a new transaction to the queue + * @private + * @param {Ext.direct.Transaction} transaction The transaction + */ + queueTransaction: function(transaction){ + var me = this, + enableBuffer = me.enableBuffer; + + if (transaction.form) { + me.sendFormRequest(transaction); + return; + } + + me.callBuffer.push(transaction); + if (enableBuffer) { + if (!me.callTask) { + me.callTask = Ext.create('Ext.util.DelayedTask', me.combineAndSend, me); + } + me.callTask.delay(Ext.isNumber(enableBuffer) ? enableBuffer : 10); + } else { + me.combineAndSend(); + } + }, + + /** + * Combine any buffered requests and send them off + * @private + */ + combineAndSend : function(){ + var buffer = this.callBuffer, + len = buffer.length; + + if (len > 0) { + this.sendRequest(len == 1 ? buffer[0] : buffer); + this.callBuffer = []; + } + }, + + /** + * Configure a form submission request + * @private + * @param {String} action The action being executed + * @param {Object} method The method being executed + * @param {HTMLElement} form The form being submitted + * @param {Function} callback (optional) A callback to run after the form submits + * @param {Object} scope (optional) A scope to execute the callback in + */ + configureFormRequest : function(action, method, form, callback, scope){ + var me = this, + transaction = Ext.create('Ext.direct.Transaction', { + provider: me, + action: action, + method: method.name, + args: [form, callback, scope], + callback: scope && Ext.isFunction(callback) ? Ext.Function.bind(callback, scope) : callback, + isForm: true + }), + isUpload, + params; + + if (me.fireEvent('beforecall', me, transaction, method) !== false) { + Ext.direct.Manager.addTransaction(transaction); + isUpload = String(form.getAttribute("enctype")).toLowerCase() == 'multipart/form-data'; + + params = { + extTID: transaction.id, + extAction: action, + extMethod: method.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(transaction, { + form: Ext.getDom(form), + isUpload: isUpload, + params: callback && Ext.isObject(callback.params) ? Ext.apply(params, callback.params) : params + }); + me.fireEvent('call', me, transaction, method); + me.sendFormRequest(transaction); + } + }, + + /** + * Sends a form request + * @private + * @param {Ext.direct.Transaction} transaction The transaction to send + */ + sendFormRequest: function(transaction){ + Ext.Ajax.request({ + url: this.url, + params: transaction.params, + callback: this.onData, + scope: this, + form: transaction.form, + isUpload: transaction.isUpload, + transaction: transaction + }); + } + +}); ++ +