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

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Invocation.js (4 KB)

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