move tab open action to separated mod

src/app/browser/window/tab/action/open.rs

@@ -0,0 +1,66 @@
+use gtk::{
+    gio::SimpleAction,
+    glib::{uuid_string_random, GString},
+    prelude::{ActionExt, StaticVariantType, ToVariant},
+};
+
+/// [SimpleAction](https://docs.gtk.org/gio/class.SimpleAction.html) wrapper for `Open` action of `Browser` group
+pub struct Open {
+    gobject: SimpleAction,
+}
+
+impl Open {
+    // Constructors
+
+    /// Create new `Self`
+    pub fn new() -> Self {
+        Self {
+            gobject: SimpleAction::new(&uuid_string_random(), Some(&String::static_variant_type())),
+        }
+    }
+
+    // Actions
+
+    /// Emit [activate](https://docs.gtk.org/gio/signal.SimpleAction.activate.html) signal
+    /// with formatted for this action [Variant](https://docs.gtk.org/glib/struct.Variant.html) value
+    pub fn activate(&self, tab_item_id: Option<&str>) {
+        self.gobject.activate(Some(
+            &match tab_item_id {
+                Some(value) => String::from(value),
+                None => String::new(),
+            }
+            .to_variant(),
+        ));
+    }
+
+    // Events
+
+    /// Define callback function for
+    /// [SimpleAction::activate](https://docs.gtk.org/gio/signal.SimpleAction.activate.html) signal
+    pub fn connect_activate(&self, callback: impl Fn(Option<GString>) + 'static) {
+        self.gobject.connect_activate(move |_, variant| {
+            let tab_item_id = variant
+                .expect("Variant required to call this action")
+                .get::<String>()
+                .expect("Parameter type does not match `String`");
+
+            callback(match tab_item_id.is_empty() {
+                true => None,
+                false => Some(tab_item_id.into()),
+            })
+        });
+    }
+
+    // Getters
+
+    /// Get reference to [SimpleAction](https://docs.gtk.org/gio/class.SimpleAction.html) GObject
+    pub fn gobject(&self) -> &SimpleAction {
+        &self.gobject
+    }
+
+    /* @TODO not in use
+    /// Get auto-generated [action name](https://docs.gtk.org/gio/property.SimpleAction.name.html)
+    pub fn id(&self) -> GString {
+        self.gobject.name()
+    } */
+}