Gaia/Settings/docs/Keyboard Settings

elements/keyboard.html elements/keyboard_selection_add_more.html

"KeyboardContext"(js/modules/keyboard_context.js) is the core of the keyboard settings panels. It provides methods for retrieving installed keyboards and the currently enabled layouts. The information is provided using observable arrays. Whenever there is a new keyboard installed/uninstalled or a layout is enabled/disabled, "KeyboardHelper"(shared/keyboard_helper.js) notifies KeyboardContext and then it updates the corresponding arrays. The UI changes along with the arrays because we are using "ListView"(js/modules/mvvm/list_view.js) to render them.