Legend widget: Capability to customize the legend

[aboudreault]

I think we can apply the same pattern that i made for the SelectionPanel (see #71) to the Legend widget. In fact, it's only to allow the same freedom that SelectionPanel do. The user will be able to set a function for generate his legend or create a renderer for a new complex behavior. I know there are some tickets that need to be fixed for this widget and some refactoring for performance issues...... so i would like to know if you prefer that i wait before make some work in this widget.

[pagameba]

Alan, the other issues that have been reported are all related to the code that turns layers/groups on/off which exists outside of the legend widget I believe. Please go ahead and propose your change to the legend widget - I have at least one new renderer to implement already!

Actually, I'd like you to do this as a new widget, perhaps called LayerControl (?). This could supersede the existing Legend and LayerManager widgets, which we would then retrofit to extend the LayerControl widget with their own custom renderer.

[aboudreault]

I commited a first version in my sandbox.

[madair]

Reviewed and overall I would support adding this to trunk. The example VerySimpleLegend? in the HowToCustomizeLegend wiki page doesn't work well with the standard samples because of a different group/layer layout but it's just an example that can be modified. Also there was an extra comma problem in the LegendRenderer? class.

[pagameba]

Alan, please clean up the patch as suggested by Mike and then go ahead and commit. You deserve the credit.

[aboudreault]

Committed to SVN trunk r1467