How can get the item localized/unlocalized info on Component/Page selection

Question

I have a custom button created in the ribbon of tridion.

If an item either Component/Page has been selected i need to get the info whether the item is localized or not. Based on that custom button will be enabled/disabled.

For getting the tcmid of the selected component/page i am currently writing as

selection.getItem(0); in my javascript.

Similarly, how can i get the localized info of the selected item(Component/Page)

Answer 1

Just check the isLocalized method of the item:

var itemUri = selection.getItem(0);
var item = $models.getItem(itemUri);
if (item.isLocalized())
{
   // Do your magic here
}

I've left out the error handling and potential loading of the item, for simplicity.

Answer 2

The Properties and Methods of the UI JavaScript Objects can be found in the SDL Tridion 2011 SP1 GUI Extension API documentation which you can find on http://docportal.sdl.com/sdltridion

Just check in the Tridion.ContentManager Namespace and you will find things like Component.getInfo() and Component.getBlueprintHierarchy() from which you can extract this kind of information.