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mathias |
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if(!dojo._hasResource["dojox.wire.ml.Invocation"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
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dojo._hasResource["dojox.wire.ml.Invocation"] = true;
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dojo.provide("dojox.wire.ml.Invocation");
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dojo.require("dojox.wire.ml.Action");
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dojo.declare("dojox.wire.ml.Invocation", dojox.wire.ml.Action, {
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// summary:
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// A widget to invoke a method or publish a topic
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// description:
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// This widget represents a controller task to invoke a method or
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// publish a topic when an event (a function) or a topic is issued.
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// object:
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// A scope of a method to invoke
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// method:
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// A name of a method to invoke
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// topic:
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// A name of a topic to publish
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// parameters:
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// Arguments for the method or the topic
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// result:
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// A property to store a return value of the method call
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// error:
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// A property to store an error on the method call
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object: "",
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method: "",
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topic: "",
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parameters: "",
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result: "",
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error: "",
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_run: function(){
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// summary:
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// Invoke a method or publish a topic
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// description:
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// If 'topic' is specified, the topic is published with arguments
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// specified to 'parameters'.
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// If 'method' and 'object' are specified, the method is invoked
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// with arguments specified to 'parameters' and set the return
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// value to a property specified to 'result'.
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// 'object', 'parameters' and 'result' can specify properties of
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// a widget or an DOM element with the dotted notation.
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// If 'parameters' are omitted, the arguments to this method are
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// passed as is.
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if(this.topic){
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var args = this._getParameters(arguments);
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try{
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dojo.publish(this.topic, args);
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this.onComplete();
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}catch(e){
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this.onError(e);
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}
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}else if(this.method){
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var scope = (this.object ? dojox.wire.ml._getValue(this.object) : dojo.global);
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if(!scope){
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return; //undefined
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}
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var args = this._getParameters(arguments);
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var func = scope[this.method];
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if(!func){
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func = scope.callMethod;
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if(!func){
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return; //undefined
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}
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args = [this.method, args];
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}
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try{
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var connected = false;
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if(scope.getFeatures){
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var features = scope.getFeatures();
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if((this.method == "fetch" && features["dojo.data.api.Read"]) ||
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(this.method == "save" && features["dojo.data.api.Write"])){
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var arg = args[0];
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if(!arg.onComplete){
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arg.onComplete = function(){};
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}
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//dojo.connect(arg, "onComplete", this, "onComplete");
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this.connect(arg, "onComplete", "onComplete");
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if(!arg.onError){
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arg.onError = function(){};
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}
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//dojo.connect(arg, "onError", this, "onError");
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this.connect(arg, "onError", "onError");
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connected = true;
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}
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}
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var r = func.apply(scope, args);
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if(!connected){
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if(r && (r instanceof dojo.Deferred)){
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var self = this;
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r.addCallbacks(
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function(result){self.onComplete(result);},
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function(error){self.onError(error);}
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);
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}else{
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this.onComplete(r);
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}
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}
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}catch(e){
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this.onError(e);
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}
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}
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},
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onComplete: function(/*anything*/result){
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// summary:
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// A function called when the method or the topic publish
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// completed
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// description:
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// If 'result' attribute is specified, the result object also set
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// to the specified property.
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// result:
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// The return value of a method or undefined for a topic
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if(this.result){
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dojox.wire.ml._setValue(this.result, result);
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}
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if(this.error){ // clear error
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dojox.wire.ml._setValue(this.error, "");
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}
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},
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onError: function(/*anything*/error){
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// summary:
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// A function called on an error occurs
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// description:
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// If 'error' attribute is specified, the error object also set to
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// the specified property.
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// error:
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// The exception or error occurred
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if(this.error){
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if(error && error.message){
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error = error.message;
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}
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dojox.wire.ml._setValue(this.error, error);
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}
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},
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_getParameters: function(/*Array*/args){
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// summary:
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// Returns arguments to a method or topic to invoke
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// description:
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// This method retunrs an array of arguments specified by
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// 'parameters' attribute, a comma-separated list of IDs and
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// their properties in a dotted notation.
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// If 'parameters' are omitted, the original arguments are
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// used.
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// args:
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// Arguments to a trigger event or topic
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if(!this.parameters){
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// use arguments as is
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return args; //Array
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}
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var parameters = [];
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var list = this.parameters.split(",");
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if(list.length == 1){
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var parameter = dojox.wire.ml._getValue(list[0], args);
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if(dojo.isArray(parameter)){
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parameters = parameter;
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}else{
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parameters.push(parameter);
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}
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}else{
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for(var i in list){
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parameters.push(dojox.wire.ml._getValue(list[i], args));
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}
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}
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return parameters; //Array
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}
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});
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}
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