I think I am finally getting some where. In case you don't know what I have
been up to I will bring you up to speed. I am building a file explorer where
the left side will only be directories. When you select a directory the
contents (files) will show up in a datagrid on the right. I was having some
issue with display branches but I solved that by inserting an empty array on
any folder i knew had children.
Now I am trying to append the directories when the user starts drilling
down. So first I have an onItemOpen() method for when the folder is opened.
All this does is figure out the path and call my server side function that
will retrieve me a list of directories for a given path.
private function onItemOpen(event:TreeEvent):void {
var path:String = event.item.path;
FileManager.getDirectories(path);
}
I have a onResult method for the getDirectories() method called
listDirectories(). What I am doing here is
1. getting the list of directories.
2. if the tree data provider (_directorheies) is null we know this is the
base.
3. if not I am trying to figure out a way to append this array (or swap out)
with the children empty array i have as a placeholder.
Is this the right approach? I am obviously doing something wrong, hope
someone can point that out!
private function listDirectories(event:ResultEvent):void {
var dirs:Array = event.result as Array;
var parent:String = dirs[0].parent;
var pos:uint = -1;
// if the _directories array is null this is our root
request
if(_directories == null) {
_directories = dirs;
}else {
// we know the parent of the item that was clicked, find
the array position
for(var i in _directories){
if(_directories[i].path == parent){
pos = i;
break;
}
}
//if we found the position append the directories to the
children node
_directories[i].children = dirs;
trace(ObjectUtil.toString(_directories));
}
}
