show diffed files path in title

Author: Stephan Dilly

src/components/diff.rs

@@ -293,11 +293,13 @@ impl DrawableComponent for DiffComponent {
             style_title = style_title.modifier(Modifier::BOLD);
         }
 
+        let title =
+            format!("{}{}", strings::TITLE_DIFF, self.current.path);
         f.render_widget(
             Paragraph::new(self.get_text(r.width, r.height).iter())
                 .block(
                     Block::default()
-                        .title(strings::TITLE_DIFF)
+                        .title(title.as_str())
                         .borders(Borders::ALL)
                         .border_style(style_border)
                         .title_style(style_title),

src/strings.rs

@@ -1,5 +1,5 @@
 pub static TITLE_STATUS: &str = "Unstaged Changes [1]";
-pub static TITLE_DIFF: &str = "Diff";
+pub static TITLE_DIFF: &str = "Diff: ";
 pub static TITLE_INDEX: &str = "Staged Changes [2]";
 
 pub static TAB_STATUS: &str = "Status";