source: Dev/trunk/src/client/dojox/lang/aspect/cflow.js

dojo.provide("dojox.lang.aspect.cflow");


(function(){
        var aop = dojox.lang.aspect;
        
        aop.cflow = function(/*Object*/ instance, /*String|RegExp|Array?*/ method){
                // summary:
                //              Returns true if the context stack contains a context for a given
                //              instance that satisfies a given method name criteria.
                //
                // instance:
                //              An instance to be matched. If null, any context will be examined.
                //              Otherwise the context should belong to this instance.
                //
                // method:
                //              An optional pattern to be matched against a method name. Can be a string,
                //              a RegExp object or an array of strings and RegExp objects.
                //              If it is omitted, any name will satisfy the criteria.
        
                if(arguments.length > 1 && !(method instanceof Array)){
                        method = [method];
                }
        
                var contextStack = aop.getContextStack();
                for(var i = contextStack.length - 1; i >= 0; --i){
                        var c = contextStack[i];
                        // check if instance matches
                        if(instance && c.instance != instance){ continue; }
                        if(!method){ return true; }
                        var n = c.joinPoint.targetName;
                        for(var j = method.length - 1; j >= 0; --j){
                                var m = method[j];
                                if(m instanceof RegExp){
                                        if(m.test(n)){ return true; }
                                }else{
                                        if(n == m){ return true; }
                                }
                        }
                }
                return false;   // Boolean
        };
})();