Struct ThemeManager 

pub struct ThemeManager { /* private fields */ }

Runtime theme manager with observer notifications.

Holds one active CooljapanTheme and notifies all registered listeners whenever set_theme is called.

Example

use oxiui_core::{Color, FontSpec, Palette};
use oxiui_theme::{CooljapanTheme};
use oxiui_theme::manager::ThemeManager;
use std::sync::{Arc, Mutex};

let initial = CooljapanTheme::new(
    Palette {
        background: Color(0, 0, 0, 255),
        surface: Color(10, 10, 26, 255),
        primary: Color(255, 255, 0, 255),
        on_primary: Color(0, 0, 0, 255),
        text: Color(255, 255, 255, 255),
        muted: Color(200, 200, 200, 255),
    },
    FontSpec::new("Inter", 14.0, 400),
);
let mut manager = ThemeManager::new(initial.clone());
let called = Arc::new(Mutex::new(false));
let c = called.clone();
manager.subscribe(Box::new(move |_| { *c.lock().unwrap() = true; }));
manager.set_theme(initial);
assert!(*called.lock().unwrap());

Implementations

impl ThemeManager

pub fn new(initial: CooljapanTheme) -> Self

Construct a manager starting with initial as the active theme.

pub fn theme(&self) -> &CooljapanTheme

Return a reference to the currently active theme.

pub fn set_theme(&mut self, theme: CooljapanTheme)

Switch the active theme and notify every registered listener.

pub fn subscribe(&mut self, f: ThemeListener) -> ListenerId

Register a listener and return its ListenerId.

The listener is called synchronously inside set_theme with a reference to the new theme.

pub fn unsubscribe(&mut self, id: ListenerId)

Remove the listener registered with id.

If id is not found, this is a no-op.

pub fn listener_count(&self) -> usize

Returns the number of currently registered listeners.