Enum WindowRole 

pub enum WindowRole {
    Primary,
    Secondary,
}

Whether a window keeps the app alive (docs/windows.md close policy).

A separate axis from WindowKind, which describes chrome. They correlate (a preferences panel is the archetypal window that should not hold an app open), but they are not the same question, and conflating them would leave no way to say “an ordinary-looking tool window that shouldn’t outlive the documents”.

Note the word “secondary” is overloaded around windows: elsewhere in day it means “a window other than the first one opened”. Here it means “does not keep the app alive”, which is about lifetime, not about order of creation.

Variants

Primary

Closing the last one of these ends the app.

Secondary

Never keeps the app alive: when the last Primary closes, the app exits and takes these with it, however many are open.

Trait Implementations

impl Clone for WindowRole

fn clone(&self) -> WindowRole

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for WindowRole

impl Debug for WindowRole

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for WindowRole

fn default() -> WindowRole

Returns the “default value” for a type.

impl Eq for WindowRole

impl From<WindowKind> for WindowRole

fn from(kind: WindowKind) -> WindowRole

The default pairing: an ordinary window holds the app open, a preferences panel does not. An app that needs a different answer sets the role itself.

impl PartialEq for WindowRole

fn eq(&self, other: &WindowRole) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for WindowRole