feat(model): add model for ColumnView

Added model that are GObject for generating values in tables.

src/model/mod.rs

@@ -1,2 +1,15 @@
 pub mod builder_traits;
 pub mod models;
+
+use crate::gtk::glib;
+use glib::Object;
+
+glib::wrapper! {
+    pub struct ResultValue(ObjectSubclass<models::ResultValue>);
+}
+
+impl ResultValue {
+    pub fn new(val: f64) -> Self {
+        Object::builder().property("value", val).build()
+    }
+}

src/model/models.rs

@@ -1,3 +1,12 @@
+use std::cell::Cell;
+
+use crate::gtk;
+
+use glib::Properties;
+use gtk::glib;
+use gtk::prelude::*;
+use gtk::subclass::prelude::*;
+
 #[repr(usize)]
 #[derive(Clone)]
 pub enum HammingMode {
@@ -11,3 +20,20 @@ pub struct EventHandler<F, C> {
 }
 
 pub type SchemeCharacteristics = (f64, f64, f64, f64, f64, f64);
+
+#[derive(Properties, Default)]
+#[properties(wrapper_type = super::ResultValue)]
+pub struct ResultValue {
+    #[property(get, set)]
+    value: Cell<f64>,
+}
+
+// The central trait for subclassing a GObject
+#[glib::object_subclass]
+impl ObjectSubclass for ResultValue {
+    const NAME: &'static str = "MyGtkAppCustomButton";
+    type Type = super::ResultValue;
+}
+
+#[glib::derived_properties]
+impl ObjectImpl for ResultValue {}