O'Reilly logo

ExtGWT Rich Internet Application Cookbook by Odili Charles Opute

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Linking combos

Perhaps more than once you have wanted to tie two or even more combo boxes together, such as for showing the countries in a continent, states in a particular country, languages within a locale, products within a category, students in a faculty, and so on, such that both of them would load all available data normally. But, if a selection has been made in the parent Category combo then the Products combo should only show products from the selected Category.

GXT's extensive array of widget lifecycle events can be employed to create this functionality. We can either craft this solution by preloading and populating both combos and then locally filtering the store of the child combo based on the selection made on the parent combo; or ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required