how to add JCombox inside JtreeTable

[Siddharth Mehrotra]

Hi,
I have been struggling to add a jcomboox inside a jtreetable.
can anyone assist me with some code snippet.

[sachin pathak]

Originally posted by Siddharth Mehrotra:
Hi,
I have been struggling to add a jcomboox inside a jtreetable.
can anyone assist me with some code snippet.

I could not get your question properly, but if it is somewhat like this
" I want to add a JComboBox inside a JTree or JTable" then the solution is easy.
Create a custom table model and custom CellRenderer. from the getXxxRendererComponent() method of the renderer, return a JComboBox as a renderer. If you want this JComboBox to be editable then there is lot of work that needs to be done. In addition to create arenderer, you will need to create a custom editor component, and use is as a editor for your tree or table. Return the JComboBox from the method getXxxEditorComponent, you can find the details in core JAva vol-2 or the best source is Graphic Java (Swing Volume, i dont recall the volume number).
MVC will take care of all other factors.
It is these kinds of situations which makes java score over microsoft technologies.

[Siddharth Mehrotra]

hi sachin,
you have given some light to what my problem is,
actually when i said treetable, it is a table where i have set a tree renderer for one column, so i have a jtree inside i a jtable.
so eventually i feel i need a cellrenderer for jcombobox, you have mentioned a method in your statement can you, elaborate more on that with respect to JTable.

[Siddharth Mehrotra]

hi sachin ,
I have been able to add the combobox,
but it is not working, i mean i can see the first element, but when i expannd the combo i dont see any data of the combo, and after collapsing the combo it gets back to the same, state showing the first element.

let me tell you what i have done,
I created the combobox insside the method getTableCellRendererComponent,
and returned it.
is it right, i guess i will have to modify the getvalueat and setvalueta methods also, but i have no clue as to how shoud i modify the same, for using combobox.

[sachin pathak]

is it right, i guess i will have to modify the getvalueat and setvalueta methods also, but i have no clue as to how shoud i modify the same, for
using combobox.[/QB]
I think you are going in the right direction. this is just a fundamental method that needs to be overridden, there are various supporting methods like getPreferredSize, and a ling list of methods which you need to override if you want this kind of functionality, I would let you know once I get some time from my current assignment, its long time I have used them. If you are ready to wait then Ican send you a code also in one weeks time, I will have to recode everything once again.
As far as the problem regarding the selection, you need to create a TableCellEditor for sure, it has various support methods like isEditing, editingStart, editingEnd, etc, which will allow you to get a very fine control on the behaviour of your editor component. Once you have a separate renderer component properly in place, I dont think you need to override getValuAt method again. the renderer should take care of it.