Detecting double-click in the action of a JButton

Question

I have a similar problem to the poster of http://forum.java.sun.com/thread.jsp?forum=52&thread=93004 and I'm wondering if anyone has a better solution.
A fuller description of my problem.
My JButtons represents certain pallette items. Clicking a pallete item puts the button in a selected state (changes its border to show it's selected). The action on this button sets a mode state on the canvas to indicate what was selected. I then click on a canvas workspace to place an instance of that item onto the canvas based on the current mode.
The selected JButton then pops up and the user needs to select a new pallette icon.
What I want as an option so that if a pallette button is double-clicked it remains selected even after the item has been placed on the canvas allowing the user to place several copies around the canvas before selecting another item.
I'd like if possible to determine this from the buttons action rather than registering a listener to the button because parts of the framework I am using pass just the actions around.
I could do this by looking at the time between actions being triggered but this seems like a messy solution (can I pickup the operating system settings for double-click delay).
Any other ideas?

Answer 1

thebobster,
This doesn't answer your original question, so if you're determined to use d-clicks on a JButton, don't bother reading further.
I've always found double-clicking on a JButton non-intuitive, not to mention messy to implement. I prefer CTRL-click, etc, to indicate a sticky click.
Perhaps you could use an image to indicate your palette button: you'll need just 2 images--up-state and down-state--and d-clicks will be easy to implement.
--A