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Jeremi,
Agreed. Manipulation part
(addNode, events etc ) threw me off as it seemed that you wanted
Tree API and DataGrid-like cell renderer. Very nice control.
Regards,
Anatole
----- Original Message -----
Sent: Sunday, April 23, 2006 2:41
AM
Subject: Re: [flexcoders] How would I do
something like this....
hi
Anatole,
I'm talking about datagrid too, never thought about extending
tree and add in those function. (especially in flex 2 the implementation
changed a lot).
I should add this to my original post:
if what
the user want is providing a *view* into the hierarchy data, then a simple
item renderer inside first column of the datagrid should do the trick, this
should just take 2-3 days.
but the project I'm working on (which will
be public in the end of May) requires the capability to let user manipulate
those nodes (add/remove/rename/drag-drop/cut/copy/paste), which made it a lot
complex then I original thought. (acutally what you said is what I thought it
should be in the beginning - that weekend when I started prototyping - but
after digging into it I found that's totally another
story)
jeremy.
On 4/23/06, Anatole
Tartakovsky <[EMAIL PROTECTED]> wrote:
Jeremy,
Actually, I was not
suggesting to rewrite UI/datagrid - I was suggesting not to use tree
- datagrid would work fine the way it is now. The changes to
datagrid would be very "localized": just sorting to take in
consideration the hierarchy (essentially making sure you have custom sort
function based on parent preceding column sort), minor changes
like making sure first column locking works, etc. In either case the code is
based on datagrid and not on the tree, with opening/closing of the nodes
based upon filtering of the data, add custom renderer to the first column to
paint / outdent first label and integrate it with filter
function.
Quick and dirty approach
allows you to do most of that code inline within the mxml/data definition
itself doing the above code explicitly.
Thank you,
Anatole
PS. Obviously, disabling sorting or column
reordering would further simplify the task.
----- Original Message -----
Sent:
Saturday, April 22, 2006 11:14 PM
Subject:
Re: [flexcoders] How would I do something like this....
well, just flip
thru my gridtree component (http://tinyurl.com/grcfs)
developed two months ago (which is still in a mess), it's around 2000 lines
of code (after refactoring it three times) and lot of algorithm behind to
handle following
function:
addNode
removeNode
cutNode
copyNode
pasteNode
indent/outdent
code
I think the first methods Anatole mentioned will definitely be a
b***h to tackel with, for the nature of List-based component is a little bit
tricky then it looks (all the list items are dynamically generated and draw
on the screen, this will cause some trouble)
I'm currently
implementing gridtree using item renderer for the first column, it's pretty
much the same work to extends gridbase and "inject" the tree grid code into
it so the API would be more compatible, by using this method I could easily
feed a non-xml structure (ie:resultset from java/php) to the component and
let it draw the hierarchy and set indent/outdent of each node.
now
I'm thinking maybe I should draw those lines and plus sign instead of a
simple arrowhead, so it's more like VS2005 :-)
FYI, the
component took a whole weekend for prototyping and concept-proofing,
*but*, it took almost one and a half month for debugging and refactoring to
stablize the code and become really usable in the on-going
product/project.
originally I want to open-source the component but
later on this become one of my assigned day-job project (so I can
fulltime developing it with the approval of my employer), but anyway, I
would love to answer any related questions.
jeremy.
On 4/23/06, Anatole
Tartakovsky <[EMAIL PROTECTED]> wrote:
Depends on your requirements:
For generic case it is 3 step
process:
1. Wait for beta 3 that supposely comes with
the source code.
2. Study the code for data grid header,
treeview, datagrid, etc
3. Write your own code for the
control inherited on the top of BaseGrid, with automatic wrapper
for the first column - 1500-2000 lines in total to support generic
case
For quick and dirty :
Create first column as cell renderer. I
believe I posted code in this group for Flex 1.5 tree cell renderer that
allowed to add nodes lines to the regular tree - you just paint it within
item - still about 200 lines of code for core functionality, another 100
lines for cascade retrieve/grouped sort on the header clicks, 2-3 days of
work altogether
Have not seen anything in the public domain,
just few developed "for hire" in consulting gigs.
HTH,
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