Added ESC shortcut to close maximized pane and disabled other shortcuts while a pane is maximized

src/ui/composable_view.rs

@@ -47,6 +47,7 @@ impl eframe::App for ComposableView {
                 ((Modifiers::NONE, Key::H), PaneAction::SplitH),
                 ((Modifiers::NONE, Key::C), PaneAction::Close),
                 ((Modifiers::SHIFT, Key::Escape), PaneAction::Maximize),
+                ((Modifiers::NONE, Key::Escape), PaneAction::Exit),
             ];
             pane_action = pane_action.or(shortcuts::map_to_action(ctx, &key_action_pairs[..])
                 .map(|action| (action, hovered_pane)));
@@ -56,6 +57,7 @@ impl eframe::App for ComposableView {
         if let Some((action, hovered_tile)) = pane_action.take() {
             match action {
                 PaneAction::SplitH => {
+                    if self.maximized_pane.is_none() {
                         let hovered_tile_pane = panes_tree.tiles.remove(hovered_tile).unwrap();
                         let left_pane = panes_tree.tiles.insert_new(hovered_tile_pane);
                         let right_pane = panes_tree.tiles.insert_pane(Pane::default());
@@ -68,7 +70,9 @@ impl eframe::App for ComposableView {
                             ))),
                         );
                     }
+                }
                 PaneAction::SplitV => {
+                    if self.maximized_pane.is_none() {
                         let hovered_tile_pane = panes_tree.tiles.remove(hovered_tile).unwrap();
                         let replaced = panes_tree.tiles.insert_new(hovered_tile_pane);
                         let lower_pane = panes_tree.tiles.insert_pane(Pane::default());
@@ -81,9 +85,10 @@ impl eframe::App for ComposableView {
                             ))),
                         );
                     }
+                }
                 PaneAction::Close => {
                     // Ignore if the root pane is the only one
-                    if panes_tree.tiles.len() != 1 {
+                    if panes_tree.tiles.len() != 1 && self.maximized_pane.is_none() {
                         panes_tree.remove_recursively(hovered_tile);
                     }
                 }
@@ -111,6 +116,11 @@ impl eframe::App for ComposableView {
                         }
                     }
                 }
+                PaneAction::Exit => {
+                    if self.maximized_pane.is_some() {
+                        self.maximized_pane = None;
+                    }
+                }
             }
         }
 
@@ -279,4 +289,5 @@ pub enum PaneAction {
     Close,
     Replace(Box<Pane>),
     Maximize,
+    Exit,
 }