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use gtk::{
gio::SimpleAction,
glib::uuid_string_random,
prelude::{ActionExt, ToVariant},
};
// Defaults
/// C-compatible variant type
const DEFAULT_STATE: i32 = -1;
/// [SimpleAction](https://docs.gtk.org/gio/class.SimpleAction.html) wrapper for `Home` action of `Window` group
pub struct Bookmark {
pub simple_action: SimpleAction,
}
impl Default for Bookmark {
fn default() -> Self {
Self::new()
}
}
impl Bookmark {
// Constructors
/// Create new `Self`
pub fn new() -> Self {
Self {
simple_action: SimpleAction::new_stateful(
&uuid_string_random(),
None,
&DEFAULT_STATE.to_variant(),
),
}
}
// Actions
/// Emit [activate](https://docs.gtk.org/gio/signal.SimpleAction.activate.html) signal
pub fn activate(&self) {
self.simple_action.activate(None);
}
/// Change action [state](https://docs.gtk.org/gio/method.SimpleAction.set_state.html)
/// * set `DEFAULT_STATE` on `None`
pub fn change_state(&self, state: Option<i32>) {
self.simple_action.change_state(
&match state {
Some(value) => value,
None => DEFAULT_STATE,
}
.to_variant(),
)
}
// Events
/// Define callback function for
/// [SimpleAction::activate](https://docs.gtk.org/gio/signal.SimpleAction.activate.html) signal
pub fn connect_activate(&self, callback: impl Fn(Option<i32>) + 'static) {
self.simple_action.connect_activate(move |this, _| {
let state = this
.state()
.expect("State value required")
.get::<i32>()
.expect("Parameter type does not match `i32`");
callback(if state == DEFAULT_STATE {
None
} else {
Some(state)
})
});
}
}