Function window_size 

pub fn window_size() -> Cmd

Creates a command that requests the current window size.

This command sends a RequestWindowSizeMsg to the program. The terminal will respond with a WindowSizeMsg containing its current dimensions. This is useful for responsive layouts that adapt to terminal size.

Examples

use bubbletea_rs::{command, Model, Msg, WindowSizeMsg};

struct MyModel {
    width: u16,
    height: u16,
}

impl Model for MyModel {
    fn init() -> (Self, Option<command::Cmd>) {
        let model = Self { width: 0, height: 0 };
        // Get initial window size
        (model, Some(command::window_size()))
    }

    fn update(&mut self, msg: Msg) -> Option<command::Cmd> {
        if let Some(size_msg) = msg.downcast_ref::<WindowSizeMsg>() {
            self.width = size_msg.width;
            self.height = size_msg.height;
        }
        None
    }
     
    fn view(&self) -> String {
        format!("Window size: {}x{}", self.width, self.height)
    }
}