added instructions

src/examples.rs

@@ -4,6 +4,8 @@ pub fn todo_app() -> Element {
     let todo = vec!["Todo", "Hovering", "Completed", "Foo", "Bar"];
 
     rsx! {
+        @SetStyle(todo_styling())
+
         text { class: "title", static "Todo list app made with OSUI" }
         text { class: "title", "{}", "-".repeat(crossterm::terminal::size().unwrap().0 as usize) }
         for (t in todo) {

src/lib.rs

@@ -37,6 +37,7 @@ pub mod utils;
 pub mod prelude {
     pub use crate::ui::Color::*;
     pub use crate::ui::Font::*;
+    pub use crate::ui::Instruction::*;
     pub use crate::ui::Number::{Auto, Center};
     pub use crate::{self as osui, css, ersx, launch, rsx, ui::*, Handler};
     pub use crate::{call, Children, Element, ElementCore, ElementWidget};
@@ -69,6 +70,9 @@ pub trait ElementWidget: ElementCore + std::fmt::Debug {
     fn event(&mut self, event: crossterm::event::Event, document: &Document) {
         _ = (event, document)
     }
+    fn initialize(&mut self, document: &mut Document) {
+        _ = document
+    }
 }
 
 //////////////////////////////////////////////////////////////////////////////////////////////////
@@ -80,7 +84,7 @@ pub struct Handler<T>(pub Arc<Mutex<dyn FnMut(&mut T, crossterm::event::Event, &
 pub struct Document {
     element: *mut Element,
     running: *mut Option<bool>,
-    css: ui::Css,
+    pub css: ui::Css,
 }
 
 #[derive(Debug)]
@@ -168,9 +172,10 @@ impl Document {
     pub fn draw(&mut self, element: &mut Element) {
         self.element = element;
     }
-    pub fn run(&self) -> bool {
+    pub fn run(&mut self) -> bool {
         unsafe { *self.running = None }
         let element = unsafe { &mut *self.element };
+        element.initialize(self);
 
         // Send initial event
         element.event(crossterm::event::Event::FocusGained, self);

src/main.rs

@@ -1,8 +1,5 @@
-use osui::{
-    examples::{todo_app, todo_styling},
-    launch,
-};
+use osui::{examples::todo_app, launch};
 
 fn main() {
-    launch!(todo_app(), todo_styling());
+    launch!(todo_app());
 }

src/rsx.rs

@@ -12,6 +12,11 @@ macro_rules! check_expr {
 }
 #[macro_export]
 macro_rules! parse_rsx_param {
+    ($elem:expr, @ $($i:ident)::+($($inner:tt)*) $($rest:tt)*) => {
+        $elem.instructions.push($($i)::+($($inner)*));
+        osui::parse_rsx_param!($elem, $($rest)*);
+    };
+
     ($elem:expr, static $text:expr) => {
         $elem.children.set_static_force(format!($text))
     };

src/ui/mod.rs

@@ -20,11 +20,17 @@ impl ElementWidget for Text<'_> {
     }
 }
 
+#[derive(Debug)]
+pub enum Instruction {
+    SetStyle(Css),
+}
+
 #[element]
 #[elem_fn]
 #[derive(Default, Debug)]
 pub struct Div {
     pub styling: Option<std::collections::HashMap<StyleName, Style>>,
+    pub instructions: Vec<Instruction>,
 }
 
 impl ElementWidget for Div<'_> {
@@ -66,6 +72,16 @@ impl ElementWidget for Div<'_> {
             }
         }
     }
+
+    fn initialize(&mut self, document: &mut Document) {
+        for inst in &self.instructions {
+            match inst {
+                Instruction::SetStyle(s) => {
+                    document.css.extend(s.clone().into_iter());
+                }
+            }
+        }
+    }
 }
 
 #[element]

src/ui/styles.rs

@@ -62,8 +62,6 @@ pub enum Number {
 #[derive(PartialEq, Eq, Hash, Debug, Clone)]
 pub enum StyleName {
     Class(String),
-    Id(String),
-    Component(String),
     ClassState(String, String),
 }