add find action

src/app.rs

@@ -173,6 +173,14 @@ impl App {
                 ),
                 &["<Primary>b"],
             ),
+            (
+                format!(
+                    "{}.{}",
+                    browser.window.action.id,
+                    browser.window.action.find.simple_action.name()
+                ),
+                &["<Primary>f"],
+            ),
             (
                 format!(
                     "{}.{}",

src/app/browser/window/action.rs

@@ -2,6 +2,7 @@ mod append;
 mod bookmark;
 mod close;
 mod close_all;
+mod find;
 mod history_back;
 mod history_forward;
 mod home;
@@ -14,6 +15,7 @@ use append::Append;
 use bookmark::Bookmark;
 use close::Close;
 use close_all::CloseAll;
+use find::Find;
 use history_back::HistoryBack;
 use history_forward::HistoryForward;
 use home::Home;
@@ -38,6 +40,7 @@ pub struct Action {
     pub bookmark: Rc<Bookmark>,
     pub close_all: Rc<CloseAll>,
     pub close: Rc<Close>,
+    pub find: Rc<Find>,
     pub history_back: Rc<HistoryBack>,
     pub history_forward: Rc<HistoryForward>,
     pub home: Rc<Home>,
@@ -60,6 +63,7 @@ impl Action {
         let bookmark = Rc::new(Bookmark::new());
         let close = Rc::new(Close::new());
         let close_all = Rc::new(CloseAll::new());
+        let find = Rc::new(Find::new());
         let history_back = Rc::new(HistoryBack::new());
         let history_forward = Rc::new(HistoryForward::new());
         let home = Rc::new(Home::new());
@@ -79,6 +83,7 @@ impl Action {
         simple_action_group.add_action(&bookmark.simple_action);
         simple_action_group.add_action(&close_all.simple_action);
         simple_action_group.add_action(&close.simple_action);
+        simple_action_group.add_action(&find.simple_action);
         simple_action_group.add_action(&history_back.simple_action);
         simple_action_group.add_action(&history_forward.simple_action);
         simple_action_group.add_action(&home.simple_action);
@@ -93,6 +98,7 @@ impl Action {
             bookmark,
             close_all,
             close,
+            find,
             history_back,
             history_forward,
             home,

src/app/browser/window/action/find.rs

@@ -0,0 +1,64 @@
+use gtk::{
+    gio::SimpleAction,
+    glib::uuid_string_random,
+    prelude::{ActionExt, ToVariant},
+};
+
+// Defaults
+
+/// C-compatible variant type
+const DEFAULT_STATE: i32 = -1;
+
+/// [SimpleAction](https://docs.gtk.org/gio/class.SimpleAction.html) wrapper for `Find` action of `Window` group
+pub struct Find {
+    pub simple_action: SimpleAction,
+}
+
+impl Find {
+    // Constructors
+
+    /// Create new `Self`
+    pub fn new() -> Self {
+        Self {
+            simple_action: SimpleAction::new_stateful(
+                &uuid_string_random(),
+                None,
+                &DEFAULT_STATE.to_variant(),
+            ),
+        }
+    }
+
+    // Actions
+
+    /// Change action [state](https://docs.gtk.org/gio/method.SimpleAction.set_state.html)
+    /// * set `DEFAULT_STATE` on `None`
+    pub fn change_state(&self, state: Option<i32>) {
+        self.simple_action.change_state(
+            &match state {
+                Some(value) => value,
+                None => DEFAULT_STATE,
+            }
+            .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<i32>) + 'static) {
+        self.simple_action.connect_activate(move |this, _| {
+            let state = this
+                .state()
+                .expect("State value required")
+                .get::<i32>()
+                .expect("Parameter type does not match `i32`");
+
+            callback(if state == DEFAULT_STATE {
+                None
+            } else {
+                Some(state)
+            })
+        });
+    }
+}

src/app/browser/window/header/bar/menu.rs

@@ -36,6 +36,12 @@ impl Menu {
                     window_action.reload.simple_action.name()
                 )));
 
+                main_page.append(Some("Find.."), Some(&format!(
+                    "{}.{}",
+                    window_action.id,
+                    window_action.find.simple_action.name()
+                )));
+
                 main_page.append(Some("Save as.."), Some(&format!(
                     "{}.{}",
                     window_action.id,

src/app/browser/window/tab.rs

@@ -75,6 +75,7 @@ impl Tab {
                 action.bookmark.change_state(state);
                 action.close_all.change_state(state);
                 action.close.change_state(state);
+                action.find.change_state(state);
                 action.history_back.change_state(state);
                 action.history_forward.change_state(state);
                 action.home.change_state(state);

src/app/browser/window/tab/menu.rs

@@ -25,6 +25,15 @@ impl Menu {
             )),
         );
 
+        main.append(
+            Some("Find.."),
+            Some(&format!(
+                "{}.{}",
+                window_action.id,
+                window_action.find.simple_action.name()
+            )),
+        );
+
         main.append(
             Some("Save as.."),
             Some(&format!(