Modify programmatically plugin parameters joomla

I would like to make a plugin that lets you use the google 开发者_StackOverflow社区fonts. But I want the user to be able to choose from all fonts available. To do this I cannot use a static xml manifest for the menu but I need to create a updated list of the fonts in real time.

So how can I modify the plugin parameters programmatically? Is it also possible to use javascript to add some behavior to the menus for some ajax work?

Thanks

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You need to create a custom element and add it to the plugin's xml file.

The following doc will let you know how to add custom element to a form.

You just need to change it according to your needs.

http://docs.joomla.org/Adding_a_multiple_item_select_list_parameter_type

This doc is just for example, you should be able to use this exact code, for example, you need not worry about saving the params. Joomla automatically saves the params of any plugin.