frontend: the advoware GUI

Signed-off-by: Ralf Zerres <ralf.zerres@networkx.de>

frontend/examples/messages.rs

@@ -0,0 +1,86 @@
+// // This examples shows how you could send messages between different widgets / views.
+
+// use orbtk::*;
+
+// mod sender {
+//     use orbtk::*;
+//     use std::{cell::Cell, rc::Rc};
+
+//     #[derive(Default)]
+//     struct SenderState {
+//         send_message: Cell<bool>,
+//     }
+
+//     impl State for SenderState {
+//         fn update(&mut self, ctx: &mut Context<'_>) {
+//             if self.send_message.get() {
+//                 ctx.send_message("receiver_view", StringMessage::from("Hello from sender."));
+//             }
+//         }
+//     }
+
+//     widget!(SenderView);
+
+//     impl Widget for SenderView {
+//         fn create() -> Self {
+//             let state = Rc::new(SenderState::default());
+//             let send_state = state.clone();
+
+//             SenderView::new()
+//                 .debug_name("SenderView")
+//                 .child(
+//                     Button::create()
+//                         .text("Send message")
+//                         .on_click(move |_| -> bool {
+//                             send_state.send_message.set(true);
+//                             true
+//                         }),
+//                 )
+//                 .state(state)
+//         }
+//     }
+// }
+
+// mod receiver {
+//     use super::sender;
+//     use orbtk::*;
+//     use std::rc::Rc;
+
+//     struct ReceiverState;
+
+//     impl State for ReceiverState {
+//         fn receive_messages(&self, _context: &mut Context<'_>, messages: &Vec<MessageBox>) {
+//             for message in messages {
+//                 if let Ok(message) = message.downcast_ref::<StringMessage>() {
+//                     println!("Message received: {}", message.0);
+//                 }
+//             }
+//         }
+//     }
+
+//     widget!(ReceiverView);
+
+//     impl Widget for ReceiverView {
+//         fn create() -> Self {
+//             ReceiverView::new()
+//                 .debug_name("ReceiverView")
+//                 .child(Container::create().child(sender::SenderView::create()))
+//                 .attach(Selector::default().id("receiver_view"))
+//                 .state(Rc::new(ReceiverState))
+//         }
+//     }
+// }
+
+// fn main() {
+//     let mut application = Application::default();
+//     application
+//         .create_window()
+//         .bounds((100.0, 100.0, 420.0, 730.0))
+//         .title("OrbTk - minimal example")
+//         .root(receiver::ReceiverView::create())
+//         .debug_flag(true)
+//         .build();
+//     application.run();
+// }
+
+fn main() {}