[tui] Open application with no editor tab.

The explorer can be used to open the first tab.

src/tui/about.rs

@@ -1,4 +1,3 @@
-use log::trace;
 use ratatui::buffer::Buffer;
 use ratatui::layout::{Constraint, Direction, Layout, Rect};
 use ratatui::style::{Modifier, Style};

src/tui/app.rs

@@ -48,7 +48,7 @@ impl<'a> App<'a> {
     pub fn new(root_path: PathBuf) -> Result<Self> {
         trace!(target:Self::id(), "Building {}", Self::id());
         let app = Self {
-            editor_tabs: EditorTab::new(&root_path.join("src/tui/app.rs")),
+            editor_tabs: EditorTab::new(None),
             explorer: Explorer::new(&root_path)?,
             logger: Logger::new(),
             menu_bar: MenuBar::new(),
@@ -61,17 +61,6 @@ impl<'a> App<'a> {
     /// Logic that should be executed once on application startup.
     pub fn start(&mut self) -> Result<()> {
         trace!(target:Self::id(), "Starting App");
-        let root_path = self.explorer.root_path.clone();
-        let editor = self
-            .editor_tabs
-            .current_editor_mut()
-            .context("Failed to get current editor in App::start")?;
-        editor
-            .set_contents(&root_path.join("src/tui/app.rs"))
-            .context(format!(
-                "Failed to initialize editor contents to path: {root_path:?}"
-            ))?;
-        editor.component_state.set_focus(Focus::Active);
         Ok(())
     }
 

src/tui/editor_tab.rs

@@ -23,13 +23,25 @@ impl EditorTab {
         "EditorTab"
     }
 
-    pub fn new(path: &std::path::PathBuf) -> Self {
+    pub fn new(path: Option<&std::path::PathBuf>) -> Self {
         trace!(target:Self::id(), "Building EditorTab with path {path:?}");
-        let tab_order = vec![path.to_string_lossy().to_string()];
-        Self {
-            editors: HashMap::from([(tab_order.first().unwrap().to_owned(), Editor::new(path))]),
-            tab_order,
-            current_editor: 0,
+        match path {
+            None => Self {
+                editors: HashMap::new(),
+                tab_order: Vec::new(),
+                current_editor: 0,
+            },
+            Some(path) => {
+                let tab_order = vec![path.to_string_lossy().to_string()];
+                Self {
+                    editors: HashMap::from([(
+                        tab_order.first().unwrap().to_owned(),
+                        Editor::new(path),
+                    )]),
+                    tab_order,
+                    current_editor: 0,
+                }
+            }
         }
     }