Alex- Thanks. The issue is when a user clicks a column header, all the column headers are re-created and now there is no way to know what just happened since any state of that click event is lost. So I guess I am forced to save it outside the headerRenderer.
I suppose I can store the column index of what was clicked, then each column when it redraws itself can get that int (if it's not -1), look that value up in the 'columns' array and see if itself is it. If so, then display the appropriate up/down arrow. --- In flexcoders@yahoogroups.com, "Alex Harui" <[EMAIL PROTECTED]> wrote: > > People do some really tricky things in customized DGs like having > headers grow and shrink or other rows grow and shrink based on rollover > states and selection and what not. Right now the DG aggressively > redraws to make sure we don't make assumptions about what can change. > > > > In theory, your custom header renderers should derive their state from > some description of the sort. That's a good model/view design and the > cost should be insignificant. Maybe the way you're checking is > non-optimal. > > > > -Alex > > > > ________________________________ > > From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On > Behalf Of e_baggg > Sent: Thursday, May 31, 2007 10:18 AM > To: flexcoders@yahoogroups.com > Subject: [flexcoders] DataGrid HeaderRenderer Recreates every click > > > > I have a server-side sort on my DataGrid which means I had to > implement my own headerRenderer to handle the click event, sort, and > server calls. > > I am trying to create the asc/desc arrow now but I realized that any > click event on the DataGrid instantiates a new Object of the > headerRenderer (all of them actually). In other words, my > headerRenderer mxml implementation, the creationComplete event gets > called any time ANYTHING is clicked in the grid, including a row. > > This is a problem for many reasons, but the most significant one being > that I cannot store the state if the column is ascending/descending > based on the user's click. I could store this externally in the model > but that is very bad b/c then I'd also have to store which column was > clicked and then the other columns have to check if it is itself and > remove the arrow if they have one. Does anyone know why the > headerRenderer is re-creating an instance of itself every time or > faced this issue? > > Thanks in advance. >
