feat(widget): add COSMIC search widget

src/widget/search/model.rs

@@ -0,0 +1,37 @@
+// Copyright 2023 System76 <info@system76.com>
+// SPDX-License-Identifier: MPL-2.0
+
+use super::State;
+use crate::iced;
+
+/// A model for managing the state of a search widget.
+pub struct Model {
+    pub input_id: iced::widget::text_input::Id,
+    pub phrase: String,
+    pub state: State,
+}
+
+impl Model {
+    /// Focuses the search field.
+    #[must_use]
+    pub fn focus<Message: 'static>(&mut self) -> crate::iced::Command<Message> {
+        self.state = State::Active;
+        iced::widget::text_input::focus(self.input_id.clone())
+    }
+
+    /// Check if the search field is currently active.
+    #[must_use]
+    pub fn is_active(&self) -> bool {
+        self.state == State::Active
+    }
+}
+
+impl Default for Model {
+    fn default() -> Self {
+        Self {
+            input_id: iced::widget::text_input::Id::unique(),
+            phrase: String::with_capacity(32),
+            state: State::Inactive,
+        }
+    }
+}