HackFlowy/public/js/libs/myLib/revControl.js

renderRevControl = function(rootNode, timeStamp){
	var finalCollection = []; 
	rootSnap = fetchLTE(rootNode, timeStamp ); 

	var queue = [rootSnap]; 
	while(queue.length > 0){
		snap = queue.shift(); 
		finalCollection.push(snap); 
		childrenSnaps = fetchChildren(snap); 
		_.each(childrenSnaps, function(childSnap){queue.push(childSnap)}); 
	}
	console.log("FINALCOLLECTION"); 
	console.log(finalCollection); 
	nodesCollection = new NodesCollection(finalCollection); 

}


//we want the first snap that has a timestamp lessThan or Equal to this. 
//(if none exists, then this call is made in error!). 
function fetchLTE(nodeId, timeStamp){ 
	var snapList = snapHash[nodeId]; //sorted, [0] is smallest
	for(var i = snapList.length-1 ; i >= 0; i--){ //start with biggest/mostRecent. 
		if(snapList[i].timestamp <= timeStamp){
			return snapList[i]; 
		}
	}
	alert("error!!"); 
}

function fetchChildren(subRootSnap){
	childrenSnaps = []; 
	var timeStamp = snap.timestamp; 
	_.each(subRootSnap.children, function(childId){
		childrenSnaps.push( fetchLTE(childId, timeStamp) );
	}); 
	return childrenSnaps; 
}