Control

tty_form::control

Trait Control 

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pub trait Control {
    // Required methods
    fn focusable(&self) -> bool;
    fn update(&mut self, input: KeyEvent);
    fn help(&self) -> Option<Segment>;
    fn text(&self) -> (Segment, Option<u16>);
    fn drawer(&self) -> Option<DrawerContents>;
    fn evaluation(&self) -> Option<(DependencyId, Evaluation)>;
    fn dependency(&self) -> Option<(DependencyId, Action)>;
    fn evaluate(&self, evaluation: &Evaluation) -> bool;
    fn add_to(self, step: &mut CompoundStep);
}
Expand description

An element of a CompoundStep which may be a focusable input.

Required Methods§

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fn focusable(&self) -> bool

Whether this control is a focusable input.

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fn update(&mut self, input: KeyEvent)

Updates the control’s state from the given input event.

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fn help(&self) -> Option<Segment>

This control’s descriptive help text, if available.

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fn text(&self) -> (Segment, Option<u16>)

This control’s rendered contents and an optional offset for the cursor.

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fn drawer(&self) -> Option<DrawerContents>

This control’s drawer contents, if available.

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fn evaluation(&self) -> Option<(DependencyId, Evaluation)>

This control’s dependency evaluation which other controls may react to.

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fn dependency(&self) -> Option<(DependencyId, Action)>

This control’s dependency which it may react to.

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fn evaluate(&self, evaluation: &Evaluation) -> bool

Perform an evaluation against this control’s current state.

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fn add_to(self, step: &mut CompoundStep)

Finish configuration and add this control to the specified form step.

Implementors§