Merge Controller and View structs into one Application struct.

The `View` sturct was mostly a layer of indirection, and the controller benefitted by absorbing the gtk::Application
subclass parts, so now those two are merged into a new gtk::Application subclass.

src/view/mod.rs

@@ -1,170 +1,11 @@
 //! The view presented to the user.
 //!
-//! This module contains gtk widgets and helper struct needed to present the graphical user interface.
+//! This module contains gtk widgets needed to present the graphical user interface.
 
 mod graph_view;
 mod node;
-pub mod port;
+mod port;
 
 pub use graph_view::GraphView;
 pub use node::Node;
-
-use gtk::{
-    gio,
-    glib::{self, clone},
-    prelude::*,
-    subclass::prelude::ObjectSubclassExt,
-};
-use pipewire::spa::Direction;
-
-use crate::controller::MediaType;
-
-// FIXME: This should be in its own .css file.
-static STYLE: &str = "
-.audio {
-    background: rgb(50,100,240);
-	color: black;
-}
-
-.video {
-    background: rgb(200,200,0);
-	color: black;
-}
-
-.midi {
-    background: rgb(200,0,50);
-    color: black;
-}
-";
-
-mod imp {
-    use super::*;
-    use gtk::{glib, subclass::prelude::*};
-
-    #[derive(Default)]
-    pub struct View {
-        pub(super) graphview: GraphView,
-    }
-
-    #[glib::object_subclass]
-    impl ObjectSubclass for View {
-        const NAME: &'static str = "HelvumApplication";
-        type Type = super::View;
-        type ParentType = gtk::Application;
-
-        fn new() -> Self {
-            View {
-                graphview: GraphView::new(),
-            }
-        }
-    }
-
-    impl ObjectImpl for View {}
-    impl ApplicationImpl for View {
-        fn activate(&self, app: &Self::Type) {
-            let scrollwindow = gtk::ScrolledWindowBuilder::new()
-                .child(&self.graphview)
-                .build();
-            let window = gtk::ApplicationWindowBuilder::new()
-                .application(app)
-                .default_width(1280)
-                .default_height(720)
-                .title("Helvum - Pipewire Patchbay")
-                .child(&scrollwindow)
-                .build();
-            window
-                .get_settings()
-                .set_property_gtk_application_prefer_dark_theme(true);
-            window.show();
-        }
-
-        fn startup(&self, app: &Self::Type) {
-            self.parent_startup(app);
-
-            // Load CSS from the STYLE variable.
-            let provider = gtk::CssProvider::new();
-            provider.load_from_data(STYLE.as_bytes());
-            gtk::StyleContext::add_provider_for_display(
-                &gtk::gdk::Display::get_default().expect("Error initializing gtk css provider."),
-                &provider,
-                gtk::STYLE_PROVIDER_PRIORITY_APPLICATION,
-            );
-        }
-    }
-    impl GtkApplicationImpl for View {}
-}
-
-glib::wrapper! {
-    pub struct View(ObjectSubclass<imp::View>)
-        @extends gio::Application, gtk::Application,
-        @implements gio::ActionGroup, gio::ActionMap;
-}
-
-
-
-impl View {
-    /// Create the view.
-    /// This will set up the entire user interface and prepare it for being run.
-    pub(super) fn new() -> Self {
-        let app: View = glib::Object::new(&[("application-id", &"org.freedesktop.ryuukyu.helvum")])
-            .expect("Failed to create new Application");
-
-        // Add <Control-Q> shortcut for quitting the application.
-        let quit = gtk::gio::SimpleAction::new("quit", None);
-        quit.connect_activate(clone!(@weak app => move |_, _| {
-            app.quit();
-        }));
-        app.set_accels_for_action("app.quit", &["<Control>Q"]);
-        app.add_action(&quit);
-
-        app
-    }
-
-    /// Add a new node to the view.
-    pub fn add_node(&self, id: u32, name: &str) {
-        let imp = imp::View::from_instance(self);
-        imp.graphview.add_node(id, crate::view::Node::new(name));
-    }
-
-    /// Add a new port to the view.
-    pub fn add_port(
-        &self,
-        node_id: u32,
-        port_id: u32,
-        port_name: &str,
-        port_direction: Direction,
-        port_media_type: Option<MediaType>,
-    ) {
-        let imp = imp::View::from_instance(self);
-        imp.graphview.add_port(
-            node_id,
-            port_id,
-            port::Port::new(port_id, port_name, port_direction, port_media_type),
-        );
-    }
-
-    /// Add a new link to the view.
-    pub fn add_link(&self, id: u32, link: crate::PipewireLink) {
-        let imp = imp::View::from_instance(self);
-        imp.graphview.add_link(id, link);
-    }
-
-    /// Remove the node with the specified id from the view.
-    pub fn remove_node(&self, id: u32) {
-        let imp = imp::View::from_instance(self);
-        imp.graphview.remove_node(id);
-    }
-
-    /// Remove the port with the id `id` from the node with the id `node_id`
-    /// from the view.
-    pub fn remove_port(&self, id: u32, node_id: u32) {
-        let imp = imp::View::from_instance(self);
-        imp.graphview.remove_port(id, node_id);
-    }
-
-    /// Remove the link with the specified id from the view.
-    pub fn remove_link(&self, id: u32) {
-        let imp = imp::View::from_instance(self);
-        imp.graphview.remove_link(id);
-    }
-}
+pub use port::Port;