feat: add floating and docked searchable file picker

src/session.rs

@@ -36,6 +36,12 @@ impl EditorSession {
         if let Err(error) = editor.set_leader(&config.leader) {
             notices.push(format!("leader {:?}: {error}", config.leader));
         }
+        if let Err(error) = editor.set_file_explorer_side(&config.file_explorer_side) {
+            notices.push(format!(
+                "file explorer side {:?}: {error}",
+                config.file_explorer_side
+            ));
+        }
         let mut plugins = BTreeMap::new();
         for path in config.plugins {
             match RubyPlugin::start(&path) {
@@ -158,6 +164,80 @@ Vamp.command("healthy") { |editor, args| editor.replace "healthy #{args}" }
         }
     }
 
+    #[test]
+    fn configured_picker_presentations_preserve_editing_and_docked_focus() {
+        let fixture = Fixture::new();
+        fixture.file("buffer.txt", "alpha");
+        let mut session = fixture.open(
+            r#"
+Vamp.configure do |config|
+  config.file_explorer_side = "left"
+  config.bind "ctrl+o", config.core.file_picker
+  config.bind "ctrl+e", config.core.file_explorer
+end
+"#,
+        );
+        assert_eq!(
+            session.editor().file_explorer_side(),
+            crate::files::DockSide::Left
+        );
+        session.handle(Input::Ctrl('e'));
+        assert_eq!(
+            session.editor().file_picker().unwrap().presentation,
+            crate::files::FilePresentation::Docked
+        );
+        for ch in "dir e\u{301}".chars() {
+            session.handle(Input::Char(ch));
+        }
+        session.handle(Input::Backspace);
+        assert_eq!(session.editor().file_picker().unwrap().query, "dir ");
+        session.handle(Input::Escape);
+        assert!(!session.editor().file_picker().unwrap().focused);
+        session.handle(Input::Char('i'));
+        for ch in " a b ".chars() {
+            session.handle(Input::Char(ch));
+        }
+        session.handle(Input::Escape);
+        assert_eq!(session.editor().lines(), &[" a b alpha"]);
+        session.handle(Input::Ctrl('o'));
+        assert_eq!(
+            session.editor().file_picker().unwrap().presentation,
+            crate::files::FilePresentation::Floating
+        );
+        assert_eq!(session.editor().file_picker().unwrap().query, "dir ");
+        session.handle(Input::Escape);
+        assert!(session.editor().file_picker().is_none());
+        session.handle(Input::Char('u'));
+        assert_eq!(session.editor().lines(), &["alpha"]);
+    }
+
+    #[test]
+    fn invalid_explorer_side_preserves_default_and_valid_bindings() {
+        let fixture = Fixture::new();
+        fixture.file("buffer.txt", "abc");
+        let mut session = fixture.open(
+            r#"
+Vamp.configure do |config|
+  config.file_explorer_side = "diagonal"
+  config.bind "n", config.core.right
+end
+"#,
+        );
+        assert_eq!(
+            session.editor().file_explorer_side(),
+            crate::files::DockSide::Right
+        );
+        session.handle(Input::Char('n'));
+        assert_eq!(
+            session.editor().cursor(),
+            crate::editor::Cursor { row: 0, column: 1 }
+        );
+        session.handle(Input::Char('i'));
+        session.handle(Input::Char('!'));
+        session.handle(Input::Escape);
+        assert_eq!(session.editor().lines(), &["a!bc"]);
+    }
+
     #[test]
     fn no_config_uses_space_leader_for_palette_and_write() {
         let fixture = Fixture::new();
@@ -962,6 +1042,18 @@ end
             ("config.leader = 7", "leader key must be a String"),
             ("config.leader = nil", "leader key must be a String"),
             (r#"config.leader = """#, "leader key must not be empty"),
+            (
+                "config.file_explorer_side = 7",
+                "file explorer side must be a String",
+            ),
+            (
+                "config.file_explorer_side = nil",
+                "file explorer side must be a String",
+            ),
+            (
+                r#"config.file_explorer_side = """#,
+                "file explorer side must not be empty",
+            ),
             (r#"config.bind "n", "core.insert""#, "TypeError"),
             (r#"config.bind "n", nil, mode: "insert""#, "TypeError"),
             (r#"config.bind "n", config.modes.insert"#, "TypeError"),