remove RcFrontend & RcLayout

[skip ci]

wgui/src/task.rs

@@ -0,0 +1,50 @@
+use crate::components::button::ComponentButton;
+use std::{cell::RefCell, collections::VecDeque, rc::Rc};
+
+pub struct Tasks<TaskType>(Rc<RefCell<VecDeque<TaskType>>>);
+
+impl<T> Clone for Tasks<T> {
+	fn clone(&self) -> Self {
+		Self(self.0.clone())
+	}
+}
+
+impl<TaskType: 'static> Tasks<TaskType> {
+	pub fn new() -> Self {
+		Self(Rc::new(RefCell::new(VecDeque::new())))
+	}
+
+	pub fn push(&self, task: TaskType) {
+		self.0.borrow_mut().push_back(task);
+	}
+
+	pub fn drain(&mut self) -> VecDeque<TaskType> {
+		let mut tasks = self.0.borrow_mut();
+		std::mem::take(&mut *tasks)
+	}
+}
+
+impl<TaskType: 'static> Default for Tasks<TaskType> {
+	fn default() -> Self {
+		Self::new()
+	}
+}
+
+impl<TaskType: Clone + 'static> Tasks<TaskType> {
+	pub fn handle_button(&self, button: &Rc<ComponentButton>, task: TaskType) {
+		button.on_click({
+			let this = self.clone();
+			Box::new(move |_, _| {
+				this.push(task.clone());
+				Ok(())
+			})
+		});
+	}
+
+	pub fn make_callback(&self, task: TaskType) -> Rc<dyn Fn()> {
+		let this = self.clone();
+		Rc::new(move || {
+			this.push(task.clone());
+		})
+	}
+}