export entire TextView widget reference to the Search component

src/app/browser/window/tab/item/page/search/subject.rs

@@ -0,0 +1,28 @@
+mod tag;
+
+use tag::Tag;
+
+use gtk::{
+    prelude::{TextBufferExt, TextViewExt},
+    TextView,
+};
+
+pub struct Subject {
+    pub text_view: TextView,
+    pub tag: Tag,
+}
+
+impl Subject {
+    // Constructors
+
+    /// Create new `Self`
+    pub fn new(text_view: TextView) -> Self {
+        // Init components
+        // * create new tag objects required for new buffer,
+        //   instead of re-use existing refs (maybe the bug)
+        let tag = Tag::new(text_view.buffer().tag_table());
+
+        // Init `Self`
+        Self { text_view, tag }
+    }
+}