Re: [flexcoders] File Explorer
So I am working with the file explorer and I came across another problem.
Server side I am writing out the following xml
>
> __,_._,_
>
My 1st problem is when its an array collection I know how to get the 1st
item (getItemAt(0)) but here i have no idea how to tell the tree to expand.
private function buildTree(event:ResultEvent):void {
_treedata = new XML(event.result);
tree.expandChildrenOf(_treedata,true);
}
Also, now that I have my basic structure, i am not quite sure what the
approach is. Here i have a listener function so that when the folder is
opened we can make another trip the server.
private function onItemOpen(event:TreeEvent):void {
var path:String = event.it...@path;
//trip to the server.
}
** on that trip back to the server do I have a different function that re
writes my xml strucutre or am I just inserting the new xml block somewhere?
If I am just inserting how do I replace the block
If anyone has an example of what I am doing please let me know.
RE: [flexcoders] File Explorer
"...talking about directories, I might as well go build them all out now..." Try it. But if the server is large, there may still be thousands of directories. But maybe not. Did I say "try it"? Tracy From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of Dan Vega Sent: Wednesday, December 17, 2008 7:00 PM To: flexcoders@yahoogroups.com Subject: Re: [flexcoders] File Explorer Thank you so much! After screwing around with this for awhile I am finding that to be the real problem. When you get into unlimited numbers of sub directories the array collection becomes very hard to manage. I think to return my list of files an arrayCollection will work just fine but for the directory structure I am going to produce xml. Also I think when we we are just talking about directories, I might as well go build them all out now __,_,_ Thank You Dan Vega
Re: [flexcoders] File Explorer
Thank you so much! After screwing around with this for awhile I am finding that to be the real problem. When you get into unlimited numbers of sub directories the array collection becomes very hard to manage. I think to return my list of files an arrayCollection will work just fine but for the directory structure I am going to produce xml. Also I think when we we are just talking about directories, I might as well go build them all out now > __,_,_ > Thank You Dan Vega
RE: [flexcoders] File Explorer
"If I am going to be updating this collection (deleting / adding /
renaming directories) that I should be using an ArrayCollection" Don't
believe everything that you hear. Demand an explanation "why".
I advise staying with XML. Like the filesystem structure, XML is
inherently hierarchical. The collections are not, and as Ivo shows, you
will have to do some work to make the hierarchy accessible. XML will
just be there.
Plus, e4x is very powerful for manipulating hierarchies, where the
nested collections are not.
Tracy
From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On
Behalf Of ivo
Sent: Wednesday, December 17, 2008 12:47 PM
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] File Explorer
I worked on something similar not too long ago and my approach for #1
was to load top-level folders only and only drill inward with a server
call as the user clicks on the expand arrow on individual folders. It
made it appear more responsive for huge structures.
For #2 you can have each of your nodes be an object with a 'children'
member that is an ArrayCollection of node objects. When
inserting/removing you operate on the children ArrayCollection directly
and the Tree will reflect the change on the next screen update.
var _children:ArrayCollection = new ArrayCollection();//add your child
nodes to this
var _parent:Object = {label: 'parent', children: _children} //this would
be the parent object
var _dp:ArrayCollection = new ArrayCollection([_parent]); //data
provider for tree
- Ivo
From: Dan Vega
To: flexcoders@yahoogroups.com
Sent: Wednesday, December 17, 2008 6:01:36 AM
Subject: [flexcoders] File Explorer
I am building a full featured file explorer and I am stuck on one part
of the application. On the left hand side I will have a base root
directory (root) and a listing of all directories that fall under it (no
end). When you click on a folder they will show up in the datagrid to
the right. My question is actually 2 parts.
1.) What approach should I take. Do I make one call to my server and
build the entire folder structure, then return either and
arraycollection or xmllistcollection or should I just grab the list of
directories and show an arrow next to directories with sub directories
indicating that there are sub directories. When you click on that folder
make another call to the server to grab that sub directory list and so
on.
2.) The second part of the question is i heard that If I am going to be
updating this collection (deleting / adding / renaming directories) that
I should be using an ArrayCollection. The question is when I have data
like there is below, how do I break it down into parent/child nodes?
Every example I have seen of the tree always uses xml as the data and in
those examples its clear how to break down child / parent relationships.
** Any help on this how to move forward with this would be great help **
[0] (Object)#3
Attributes = ""
DateLastModified = Sat Nov 1 13:21:02 GMT-0400 2008
Directory = "H:\JRun4"
hasDirs = 0
Mode = ""
Name = "bin"
Path = "H:\JRun4\bin"
Size = 0
Type = "Dir"
[1] (Object)#4
Attributes = ""
DateLastModified = Fri Aug 3 21:55:23 GMT-0400 2007
Directory = "H:\JRun4"
hasDirs = 1
Mode = ""
Name = "docs"
Path = "H:\JRun4\docs"
Size = 0
Type = "Dir"
Thank You
Dan Vega
danv...@gmail. com <mailto:danv...@gmail.com>
http://www.danvega. org <http://www.danvega.org>
Re: [flexcoders] File Explorer
I worked on something similar not too long ago and my approach for #1 was to
load top-level folders only and only drill inward with a server call as the
user clicks on the expand arrow on individual folders. It made it appear more
responsive for huge structures.
For #2 you can have each of your nodes be an object with a 'children' member
that is an ArrayCollection of node objects. When inserting/removing you operate
on the children ArrayCollection directly and the Tree will reflect the change
on the next screen update.
var _children:ArrayCollection = new ArrayCollection();//add your child nodes to
this
var _parent:Object = {label: 'parent', children: _children} //this would be the
parent object
var _dp:ArrayCollection = new ArrayCollection([_parent]); //data provider for
tree
- Ivo
From: Dan Vega
To: flexcoders@yahoogroups.com
Sent: Wednesday, December 17, 2008 6:01:36 AM
Subject: [flexcoders] File Explorer
I am building a full featured file explorer and I am stuck on one part of the
application. On the left hand side I will have a base root directory (root) and
a listing of all directories that fall under it (no end). When you click on a
folder they will show up in the datagrid to the right. My question is actually
2 parts.
1.) What approach should I take. Do I make one call to my server and build the
entire folder structure, then return either and arraycollection or
xmllistcollection or should I just grab the list of directories and show an
arrow next to directories with sub directories indicating that there are sub
directories. When you click on that folder make another call to the server to
grab that sub directory list and so on.
2.) The second part of the question is i heard that If I am going to be
updating this collection (deleting / adding / renaming directories) that I
should be using an ArrayCollection. The question is when I have data like there
is below, how do I break it down into parent/child nodes? Every example I have
seen of the tree always uses xml as the data and in those examples its clear
how to break down child / parent relationships.
** Any help on this how to move forward with this would be great help **
[0] (Object)#3
Attributes = ""
DateLastModified = Sat Nov 1 13:21:02 GMT-0400 2008
Directory = "H:\JRun4"
hasDirs = 0
Mode = ""
Name = "bin"
Path = "H:\JRun4\bin"
Size = 0
Type = "Dir"
[1] (Object)#4
Attributes = ""
DateLastModified = Fri Aug 3 21:55:23 GMT-0400 2007
Directory = "H:\JRun4"
hasDirs = 1
Mode = ""
Name = "docs"
Path = "H:\JRun4\docs"
Size = 0
Type = "Dir"
Thank You
Dan Vega
danv...@gmail. com
http://www.danvega. org
[flexcoders] File Explorer
I am building a full featured file explorer and I am stuck on one part of the application. On the left hand side I will have a base root directory (root) and a listing of all directories that fall under it (no end). When you click on a folder they will show up in the datagrid to the right. My question is actually 2 parts. 1.) What approach should I take. Do I make one call to my server and build the entire folder structure, then return either and arraycollection or xmllistcollection or should I just grab the list of directories and show an arrow next to directories with sub directories indicating that there are sub directories. When you click on that folder make another call to the server to grab that sub directory list and so on. 2.) The second part of the question is i heard that If I am going to be updating this collection (deleting / adding / renaming directories) that I should be using an ArrayCollection. The question is when I have data like there is below, how do I break it down into parent/child nodes? Every example I have seen of the tree always uses xml as the data and in those examples its clear how to break down child / parent relationships. ** Any help on this how to move forward with this would be great help ** [0] (Object)#3 Attributes = "" DateLastModified = Sat Nov 1 13:21:02 GMT-0400 2008 Directory = "H:\JRun4" hasDirs = 0 Mode = "" Name = "bin" Path = "H:\JRun4\bin" Size = 0 Type = "Dir" [1] (Object)#4 Attributes = "" DateLastModified = Fri Aug 3 21:55:23 GMT-0400 2007 Directory = "H:\JRun4" hasDirs = 1 Mode = "" Name = "docs" Path = "H:\JRun4\docs" Size = 0 Type = "Dir" Thank You Dan Vega danv...@gmail.com http://www.danvega.org
