Added WindowHandle

Closes #109

Cargo.lock

@@ -1178,7 +1178,7 @@ checksum = "e2db585e1d738fc771bf08a151420d3ed193d9d895a36df7f6f8a9456b911ddc"
 [[package]]
 name = "kludgine"
 version = "0.6.1"
-source = "git+https://github.com/khonsulabs/kludgine#4da9c9aef372ea6ae22fc18095a098d7189984c2"
+source = "git+https://github.com/khonsulabs/kludgine#daf7a2df751c2e77ac226d3ddf5a408b85172cc9"
 dependencies = [
  "ahash",
  "alot",
@@ -3232,9 +3232,9 @@ dependencies = [
 
 [[package]]
 name = "winnow"
-version = "0.5.30"
+version = "0.5.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9b5c3db89721d50d0e2a673f5043fc4722f76dcc352d7b1ab8b8288bed4ed2c5"
+checksum = "97a4882e6b134d6c28953a387571f1acdd3496830d5e36c5e3a1075580ea641c"
 dependencies = [
  "memchr",
 ]

src/app.rs

@@ -5,6 +5,7 @@ use kludgine::app::{AppEvent, AsApplication};
 
 use crate::utils::IgnorePoison;
 use crate::window::sealed::WindowCommand;
+use crate::window::WindowHandle;
 
 /// A Gooey application that has not started running yet.
 pub struct PendingApp {
@@ -116,7 +117,7 @@ pub trait Run: Sized {
 /// A type that can be opened as a window in an application.
 pub trait Open: Sized {
     /// Opens the provided type as a window inside of `app`.
-    fn open<App>(self, app: &App) -> crate::Result
+    fn open<App>(self, app: &App) -> crate::Result<Option<WindowHandle>>
     where
         App: Application;
 

src/widget.rs

@@ -467,7 +467,7 @@ impl<T> Open for T
 where
     T: MakeWidget,
 {
-    fn open<App>(self, app: &App) -> crate::Result
+    fn open<App>(self, app: &App) -> crate::Result<Option<crate::window::WindowHandle>>
     where
         App: Application,
     {

src/window.rs

@@ -327,12 +327,12 @@ impl<Behavior> Open for Window<Behavior>
 where
     Behavior: WindowBehavior,
 {
-    fn open<App>(self, app: &App) -> crate::Result
+    fn open<App>(self, app: &App) -> crate::Result<Option<WindowHandle>>
     where
         App: Application,
     {
         let gooey = app.gooey().clone();
-        let _handle = GooeyWindow::<Behavior>::open_with(
+        let handle = GooeyWindow::<Behavior>::open_with(
             app,
             sealed::Context {
                 user: self.context,
@@ -356,7 +356,7 @@ where
             },
         )?;
 
-        Ok(())
+        Ok(handle.map(WindowHandle::from))
     }
 
     fn run_in(self, app: PendingApp) -> crate::Result {
@@ -1318,6 +1318,18 @@ where
             WindowCommand::Redraw => {
                 window.set_needs_redraw();
             }
+            WindowCommand::RequestClose => {
+                let mut window = RunningWindow::new(
+                    window,
+                    &self.gooey,
+                    &self.focused,
+                    &self.occluded,
+                    &self.inner_size,
+                );
+                if self.behavior.close_requested(&mut window) {
+                    window.close();
+                }
+            }
         }
     }
 }
@@ -1386,7 +1398,7 @@ pub(crate) mod sealed {
     #[derive(Clone)]
     pub enum WindowCommand {
         Redraw,
-        // RequestClose,
+        RequestClose,
     }
 }
 
@@ -1487,3 +1499,22 @@ fn default_family(query: Family<'_>) -> Option<FamilyOwned> {
         .and_then(|output| String::from_utf8(output.stdout).ok())
         .map(FamilyOwned::Name)
 }
+
+/// A handle to an open Gooey window.
+pub struct WindowHandle(kludgine::app::WindowHandle<sealed::WindowCommand>);
+
+impl WindowHandle {
+    /// Request that the window closes.
+    ///
+    /// A window may disallow itself from being closed by customizing
+    /// [`WindowBehavior::close_requested`].
+    pub fn request_close(&self) {
+        let _result = self.0.send(sealed::WindowCommand::RequestClose);
+    }
+}
+
+impl From<kludgine::app::WindowHandle<sealed::WindowCommand>> for WindowHandle {
+    fn from(handle: kludgine::app::WindowHandle<sealed::WindowCommand>) -> Self {
+        WindowHandle(handle)
+    }
+}