Module textbox 

Driving a single-line text input (widget::text_box()) from the raw UI events a Yog screen receives — click:X:Y, drag:X:Y, release:X:Y, key:KEY:MODS and char:CODEPOINT — like ScrollState does for scroll views.

static SEARCH: Mutex<TextBoxState> = Mutex::new(TextBoxState::new());

// render: feed the text, caret and focus into the tree
SEARCH.lock().unwrap().apply(root.find_mut("search").unwrap());

// events: with the last frame's layout node of "search"; return `true`
// from the `register_ui` handler when it's consumed, so Esc unfocuses
// the box instead of closing the screen
match SEARCH.lock().unwrap().handle(event, node) {
    TextBoxEvent::Ignored => { /* not for the box: buttons etc. */ }
    TextBoxEvent::Changed => { /* re-filter */ }
    TextBoxEvent::Submitted => { /* Enter */ }
    TextBoxEvent::Handled => {}
}

Structs

TextBoxState

Text, caret, selection and focus of one text box.

Enums

TextBoxEvent

What TextBoxState::handle did with an event.