wgui: WguiWindow, open/close

wgui/src/windowing.rs

@@ -0,0 +1,110 @@
+use std::{cell::RefCell, rc::Rc};
+
+use glam::Vec2;
+use taffy::prelude::length;
+
+use crate::{
+	assets::AssetPath,
+	components::button::ComponentButton,
+	event::EventListenerCollection,
+	globals::WguiGlobals,
+	layout::{Layout, LayoutTask, LayoutTasks, WidgetPair},
+	parser::{self, Fetchable, ParserState},
+	widget::div::WidgetDiv,
+};
+
+struct OpenedWindow {
+	layout_tasks: LayoutTasks,
+	widget: WidgetPair,
+
+	#[allow(dead_code)]
+	state: ParserState,
+}
+
+impl Drop for OpenedWindow {
+	fn drop(&mut self) {
+		self.layout_tasks.push(LayoutTask::RemoveWidget(self.widget.id));
+	}
+}
+
+struct State {
+	opened_window: Option<OpenedWindow>,
+}
+
+#[derive(Clone)]
+pub struct WguiWindow(Rc<RefCell<State>>);
+
+pub struct WguiWindowParams<'a> {
+	pub position: Vec2,
+	pub globals: WguiGlobals,
+	pub layout: &'a mut Layout,
+	pub listeners: &'a mut EventListenerCollection<(), ()>,
+}
+
+impl Default for WguiWindow {
+	fn default() -> Self {
+		Self(Rc::new(RefCell::new(State { opened_window: None })))
+	}
+}
+
+impl WguiWindow {
+	pub fn close(&self) {
+		self.0.borrow_mut().opened_window = None;
+	}
+
+	pub fn open(&mut self, params: WguiWindowParams) -> anyhow::Result<()> {
+		// close previous one if it's already open
+		self.close();
+
+		const XML_PATH: AssetPath = AssetPath::WguiInternal("wgui/window_frame.xml");
+
+		let (widget, _) = params.layout.add_topmost_child(
+			WidgetDiv::create(),
+			taffy::Style {
+				position: taffy::Position::Absolute,
+				margin: taffy::Rect {
+					left: length(params.position.x),
+					right: length(0.0),
+					top: length(params.position.y),
+					bottom: length(0.0),
+				},
+				..Default::default()
+			},
+		)?;
+
+		let state = parser::parse_from_assets(
+			&parser::ParseDocumentParams {
+				globals: params.globals,
+				path: XML_PATH,
+				extra: Default::default(),
+			},
+			params.layout,
+			params.listeners,
+			widget.id,
+		)?;
+
+		let but_close = state.fetch_component_as::<ComponentButton>("but_close").unwrap();
+		but_close.on_click({
+			let this = self.clone();
+			Box::new(move |_common, _e| {
+				this.close();
+				Ok(())
+			})
+		});
+
+		let button = state.fetch_component_as::<ComponentButton>("button").unwrap();
+
+		button.on_click(Box::new(move |_common, _e| {
+			log::info!("click");
+			Ok(())
+		}));
+
+		self.0.borrow_mut().opened_window = Some(OpenedWindow {
+			widget,
+			state,
+			layout_tasks: params.layout.tasks.clone(),
+		});
+
+		Ok(())
+	}
+}