Struct ColorPicker 

pub struct ColorPicker { /* private fields */ }

Pick a colour. Returns it as a string in the ColorFormat chosen.

Implementations

impl ColorPicker

pub fn new(prompt: impl Into<String>) -> ColorPicker

pub fn format(self, format: ColorFormat) -> Self

pub fn value(self, value: impl Into<String>) -> Self

Start with this typed: a name to filter by, or a colour.

pub fn default(self, color: impl Into<String>) -> Self

The colour returned without a terminal, and for an empty line at a line prompt. One that is not a colour (ColorPicker::is_color) is reported when the line prompt starts, and is no default.

pub fn is_color(text: &str) -> bool

Whether text is a colour the picker takes: a rich name, #rrggbb, rgb(r,g,b) or color(N). Check a default with it up front.

pub fn height(self, rows: usize) -> Self

Show at most rows colours at once (default 10).

pub fn palette(self, on: bool) -> Self

Start on the palette grid.

pub fn rebind(self, action: &str, keys: impl IntoIterator<Item = Key>) -> Self

Make keys do action (in context color; see keymap) on this picker only; no keys unbinds it.

pub fn theme(self, theme: Theme) -> Self

pub fn with_mouse(self, on: bool) -> Self

Report the mouse: a click focuses a colour, a second click picks it.

Trait Implementations

impl Component for ColorPicker

type Output = String

fn handle(&mut self, event: &Event, context: &Context<'_>) -> Flow<String>

Handle one event. Ctrl+C never arrives here: the event loop ends the component with Outcome::Interrupted.

fn keymap(&self) -> Keymap

The bindings this component has right now, for a help overlay, a shortcut list or status-bar hints to read (see keymap). A container’s include its focused child’s, before its own. The default declares none.

fn render(&self, context: &Context<'_>) -> View

Render the current state.

fn mouse(&self) -> bool

Whether the component wants mouse events (#476): clicks, drags and the wheel. Off by default, since reporting the mouse takes text selection away from the terminal; a component turns it on when its caller opts in, and run then enables mouse reporting for the session.

fn default_value(&self) -> Option<String>

The value to return when the terminal is not interactive and the policy asks for defaults. None: there is none.

fn prompt( &mut self, io: &mut dyn LineIo, ) -> Result<Option<String>, NotInteractive>

Ask for the value line by line, for when the terminal is not interactive and the policy asks for a prompt. The default says the component has no line-based form.

fn start(&mut self, context: &Context<'_>) -> Flow<Self::Output>

Called once, before the component is first painted, with the terminal’s size: for work that needs it, such as rendering content at the width. Returning Done or Cancel finishes the component without waiting for an event. The default does nothing.

fn tick(&self) -> Option<Duration>

How often the component wants Event::Tick, for a spinner or a countdown. None (the default): never.

fn focusable(&self) -> bool

Whether the component takes focus in a container: Tab stops on it and keys go to it. The default: yes. A label, or a component that has finished, says no.

fn focus_step(&mut self, forward: bool) -> bool

Move focus to the next (forward) or previous focus stop inside this component, for Tab and Shift+Tab. false when there is none after the current one, so the container moves on to its next child. The default, for a component that is one stop: false.

fn focus_enter(&mut self, forward: bool) -> bool

Take focus from outside: at the first stop inside when forward, at the last otherwise. false when nothing in it can take focus. The default: whether the component is focusable.