extern crate native_windows_gui as nwg;
extern crate native_windows_derive as nwd;  // Optional. Only if the derive macro is used.

#![windows_subsystem = "windows"]
/*!
    A very simple application that shows your name in a message box.
    Unlike `basic_d`, this example uses layout to position the controls in the window
*/


extern crate native_windows_gui as nwg;
extern crate native_windows_derive as nwd;

use nwd::NwgUi;
use nwg::NativeUi;


#[derive(Default, NwgUi)]
pub struct BasicApp {
    #[nwg_control(size: (300, 115), position: (300, 300), title: "Basic example", flags: "WINDOW|VISIBLE")]
    #[nwg_events( OnWindowClose: [BasicApp::say_goodbye] )]
    window: nwg::Window,

    #[nwg_layout(parent: window, spacing: 1)]
    grid: nwg::GridLayout,

    #[nwg_control(text: "Heisenberg", focus: true)]
    #[nwg_layout_item(layout: grid, row: 0, col: 0)]
    name_edit: nwg::TextInput,

    #[nwg_control(text: "Say my name")]
    #[nwg_layout_item(layout: grid, col: 0, row: 1, row_span: 2)]
    #[nwg_events( OnButtonClick: [BasicApp::say_hello] )]
    hello_button: nwg::Button
}

impl BasicApp {

    fn say_hello(&self) {
        nwg::modal_info_message(&self.window, "Hello", &format!("Hello {}", self.name_edit.text()));
    }
    
    fn say_goodbye(&self) {
        nwg::modal_info_message(&self.window, "Goodbye", &format!("Goodbye {}", self.name_edit.text()));
        nwg::stop_thread_dispatch();
    }

}

fn main() {
    nwg::init().expect("Failed to init Native Windows GUI");
    nwg::Font::set_global_family("Segoe UI").expect("Failed to set default font");
    let _app = BasicApp::build_ui(Default::default()).expect("Failed to build UI");
    nwg::dispatch_thread_events();
}

#![windows_subsystem = "windows"]
/**
    A very simple application that show your name in a message box.

    This demo shows how to use NWG without the NativeUi trait boilerplate.
    Note that this way of doing things is alot less extensible and cannot make use of native windows derive.

    See `basic` for the NativeUi version and `basic_d` for the derive version
*/
extern crate native_windows_gui as nwg;
use std::rc::Rc;

fn main() {
    nwg::init().expect("Failed to init Native Windows GUI");
    nwg::Font::set_global_family("Segoe UI").expect("Failed to set default font");

    let mut window = Default::default();
    let mut name_edit = Default::default();
    let mut hello_button = Default::default();
    let layout = Default::default();

    nwg::Window::builder()
        .size((300, 115))
        .position((300, 300))
        .title("Basic example")
        .build(&mut window)
        .unwrap();

    nwg::TextInput::builder()
        .text("Heisenberg")
        .focus(true)
        .parent(&window)
        .build(&mut name_edit)
        .unwrap();

    nwg::Button::builder()
        .text("Say my name")
        .parent(&window)
        .build(&mut hello_button)
        .unwrap();

    nwg::GridLayout::builder()
        .parent(&window)
        .spacing(1)
        .child(0, 0, &name_edit)
        .child_item(nwg::GridLayoutItem::new(&hello_button, 0, 1, 1, 2))
        .build(&layout)
        .unwrap();

    let window = Rc::new(window);
    let events_window = window.clone();

    let handler = nwg::full_bind_event_handler(&window.handle, move |evt, _evt_data, handle| {
        use nwg::Event as E;

        match evt {
            E::OnWindowClose => 
                if &handle == &events_window as &nwg::Window {
                    nwg::modal_info_message(&events_window.handle, "Goodbye", &format!("Goodbye {}", name_edit.text()));
                    nwg::stop_thread_dispatch();
                },
            E::OnButtonClick => 
                if &handle == &hello_button {
                    nwg::modal_info_message(&events_window.handle, "Hello", &format!("Hello {}", name_edit.text()));
                },
            _ => {}
        }
    });

    nwg::dispatch_thread_events();
    nwg::unbind_event_handler(&handler);
}

#![windows_subsystem = "windows"]
/*!
    A very simple application that shows your name in a message box.
    Uses layouts to position the controls in the window
*/

extern crate native_windows_gui as nwg;
use nwg::NativeUi;


#[derive(Default)]
pub struct BasicApp {
    window: nwg::Window,
    layout: nwg::GridLayout,
    name_edit: nwg::TextInput,
    hello_button: nwg::Button
}

impl BasicApp {

    fn say_hello(&self) {
        nwg::modal_info_message(&self.window, "Hello", &format!("Hello {}", self.name_edit.text()));
    }
    
    fn say_goodbye(&self) {
        nwg::modal_info_message(&self.window, "Goodbye", &format!("Goodbye {}", self.name_edit.text()));
        nwg::stop_thread_dispatch();
    }

}

//
// ALL of this stuff is handled by native-windows-derive
//
mod basic_app_ui {
    use native_windows_gui as nwg;
    use super::*;
    use std::rc::Rc;
    use std::cell::RefCell;
    use std::ops::Deref;

    pub struct BasicAppUi {
        inner: Rc<BasicApp>,
        default_handler: RefCell<Option<nwg::EventHandler>>
    }

    impl nwg::NativeUi<BasicAppUi> for BasicApp {
        fn build_ui(mut data: BasicApp) -> Result<BasicAppUi, nwg::NwgError> {
            use nwg::Event as E;
            
            // Controls
            nwg::Window::builder()
                .flags(nwg::WindowFlags::WINDOW | nwg::WindowFlags::VISIBLE)
                .size((300, 115))
                .position((300, 300))
                .title("Basic example")
                .build(&mut data.window)?;

            nwg::TextInput::builder()
                .text("Heisenberg")
                .parent(&data.window)
                .focus(true)
                .build(&mut data.name_edit)?;

            nwg::Button::builder()
                .text("Say my name")
                .parent(&data.window)
                .build(&mut data.hello_button)?;

            // Wrap-up
            let ui = BasicAppUi {
                inner: Rc::new(data),
                default_handler: Default::default(),
            };

            // Events
            let evt_ui = Rc::downgrade(&ui.inner);
            let handle_events = move |evt, _evt_data, handle| {
                if let Some(ui) = evt_ui.upgrade() {
                    match evt {
                        E::OnButtonClick => 
                            if &handle == &ui.hello_button {
                                BasicApp::say_hello(&ui);
                            },
                        E::OnWindowClose => 
                            if &handle == &ui.window {
                                BasicApp::say_goodbye(&ui);
                            },
                        _ => {}
                    }
                }
            };

           *ui.default_handler.borrow_mut() = Some(nwg::full_bind_event_handler(&ui.window.handle, handle_events));

           // Layouts
           nwg::GridLayout::builder()
            .parent(&ui.window)
            .spacing(1)
            .child(0, 0, &ui.name_edit)
            .child_item(nwg::GridLayoutItem::new(&ui.hello_button, 0, 1, 1, 2))
            .build(&ui.layout)?;

            return Ok(ui);
        }
    }

    impl Drop for BasicAppUi {
        /// To make sure that everything is freed without issues, the default handler must be unbound.
        fn drop(&mut self) {
            let handler = self.default_handler.borrow();
            if handler.is_some() {
                nwg::unbind_event_handler(handler.as_ref().unwrap());
            }
        }
    }

    impl Deref for BasicAppUi {
        type Target = BasicApp;

        fn deref(&self) -> &BasicApp {
            &self.inner
        }
    }
}

fn main() {
    nwg::init().expect("Failed to init Native Windows GUI");
    nwg::Font::set_global_family("Segoe UI").expect("Failed to set default font");
    let _ui = BasicApp::build_ui(Default::default()).expect("Failed to build UI");
    nwg::dispatch_thread_events();
}