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use gtk::prelude::{BoxExt, ButtonExt, GtkWindowExt, OrientableExt, WidgetExt};
use relm4::{
actions::{AccelsPlus, ActionName, ActionablePlus, RelmAction, RelmActionGroup},
gtk, send, AppUpdate, Model, RelmApp, Sender, WidgetPlus, Widgets,
};
#[derive(Default)]
struct AppModel {
counter: u8,
}
enum AppMsg {
Increment,
Decrement,
}
impl Model for AppModel {
type Msg = AppMsg;
type Widgets = AppWidgets;
type Components = ();
}
impl AppUpdate for AppModel {
fn update(&mut self, msg: AppMsg, _components: &(), _sender: Sender<AppMsg>) -> bool {
match msg {
AppMsg::Increment => {
self.counter = self.counter.wrapping_add(1);
}
AppMsg::Decrement => {
self.counter = self.counter.wrapping_sub(1);
}
}
true
}
}
#[relm4::widget]
impl Widgets<AppModel, ()> for AppWidgets {
view! {
main_window = gtk::ApplicationWindow {
set_title: Some("Simple app"),
set_default_width: 300,
set_default_height: 100,
set_child = Some(>k::Box) {
set_orientation: gtk::Orientation::Vertical,
set_margin_all: 5,
set_spacing: 5,
append = >k::Button {
set_label: "Increment",
set_action<TestU8Action>: 1,
connect_clicked(sender) => move |_| {
send!(sender, AppMsg::Increment);
},
},
append = >k::Button::with_label("Decrement") {
connect_clicked(sender) => move |_| {
send!(sender, AppMsg::Decrement);
},
},
append = >k::Label {
set_margin_all: 5,
set_label: watch! { &format!("Counter: {}", model.counter) },
},
append = >k::MenuButton {
set_menu_model: Some(&menu_model),
}
},
}
}
fn pre_init() {
let menu_model = gtk::gio::Menu::new();
menu_model.append(Some("Stateless"), Some(&TestAction::action_name()));
}
fn post_init() {
let app = relm4::gtk_application();
app.set_accelerators_for_action::<TestAction>(&["<primary>W"]);
let group = RelmActionGroup::<WindowActionGroup>::new();
let action: RelmAction<TestAction> = RelmAction::new_stateless(move |_| {
println!("Statelesss action!");
send!(sender, AppMsg::Increment);
});
let action2: RelmAction<TestU8Action> =
RelmAction::new_stateful_with_target_value(&0, |_, state, value| {
println!("Stateful action -> state: {}, value: {}", state, value);
*state += value;
});
group.add_action(action);
group.add_action(action2);
let actions = group.into_action_group();
main_window.insert_action_group("win", Some(&actions));
}
}
relm4::new_action_group!(WindowActionGroup, "win");
relm4::new_stateless_action!(TestAction, WindowActionGroup, "test");
relm4::new_stateful_action!(TestU8Action, WindowActionGroup, "test2", u8, u8);
fn main() {
let model = AppModel::default();
let app = RelmApp::new(model);
app.run();
}