63 lines
2.1 KiB
JavaScript
63 lines
2.1 KiB
JavaScript
|
//>>built
|
||
|
|
define("dojox/mvc/Bind", [
|
||
|
|
"dojo/_base/lang",
|
||
|
|
"dojo/_base/array"
|
||
|
|
], function(lang, array){
|
||
|
|
var mvc = lang.getObject("dojox.mvc", true);
|
||
|
|
/*=====
|
||
|
|
mvc = dojox.mvc;
|
||
|
|
=====*/
|
||
|
|
|
||
|
|
return lang.mixin(mvc, {
|
||
|
|
bind: function(/*dojo.Stateful*/ source, /*String*/ sourceProp,
|
||
|
|
/*dojo.Stateful*/ target, /*String*/ targetProp,
|
||
|
|
/*Function?*/ func, /*Boolean?*/ bindOnlyIfUnequal){
|
||
|
|
// summary:
|
||
|
|
// Bind the specified property of the target to the specified
|
||
|
|
// property of the source with the supplied transformation.
|
||
|
|
// source:
|
||
|
|
// The source dojo.Stateful object for the bind.
|
||
|
|
// sourceProp:
|
||
|
|
// The name of the source's property whose change triggers the bind.
|
||
|
|
// target:
|
||
|
|
// The target dojo.Stateful object for the bind whose
|
||
|
|
// property will be updated with the result of the function.
|
||
|
|
// targetProp:
|
||
|
|
// The name of the target's property to be updated with the
|
||
|
|
// result of the function.
|
||
|
|
// func:
|
||
|
|
// The optional calculation to be performed to obtain the target
|
||
|
|
// property value.
|
||
|
|
// bindOnlyIfUnequal:
|
||
|
|
// Whether the bind notification should happen only if the old and
|
||
|
|
// new values are unequal (optional, defaults to false).
|
||
|
|
var convertedValue;
|
||
|
|
return source.watch(sourceProp, function(prop, oldValue, newValue){
|
||
|
|
convertedValue = lang.isFunction(func) ? func(newValue) : newValue;
|
||
|
|
if(!bindOnlyIfUnequal || convertedValue != target.get(targetProp)){
|
||
|
|
target.set(targetProp, convertedValue);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
},
|
||
|
|
|
||
|
|
bindInputs: function(/*dojo.Stateful[]*/ sourceBindArray, /*Function*/ func){
|
||
|
|
// summary:
|
||
|
|
// Bind the values at the sources specified in the first argument
|
||
|
|
// array such that a composing function in the second argument is
|
||
|
|
// called when any of the values changes.
|
||
|
|
// sourceBindArray:
|
||
|
|
// The array of dojo.Stateful objects to watch values changes on.
|
||
|
|
// func:
|
||
|
|
// The composing function that is called when any of the source
|
||
|
|
// values changes.
|
||
|
|
// tags:
|
||
|
|
// protected
|
||
|
|
var watchHandles = [];
|
||
|
|
array.forEach(sourceBindArray, function(h){
|
||
|
|
watchHandles.push(h.watch("value", func));
|
||
|
|
});
|
||
|
|
return watchHandles;
|
||
|
|
}
|
||
|
|
});
|
||
|
|
});
|