Revert "refactor: mystery model 3"

This reverts commit 4b721f7543.

src/main.rs

@@ -344,6 +344,21 @@ fn draw_title(f: &mut Frame, area: Rect, app: &App) {
 }
 
 fn draw_content(f: &mut Frame, area: Rect, app: &App) {
+    let side_open = app.formula_panel_open || app.category_panel_open || app.view_panel_open;
+
+    if side_open {
+        let side_w = 32u16;
+        let chunks = Layout::default()
+            .direction(Direction::Horizontal)
+            .constraints([Constraint::Min(40), Constraint::Length(side_w)])
+            .split(area);
+
+        f.render_widget(
+            GridWidget::new(&app.model, &app.mode, &app.search_query),
+            chunks[0],
+        );
+
+        let side = chunks[1];
         let panel_count = [
             app.formula_panel_open,
             app.category_panel_open,
@@ -351,53 +366,40 @@ fn draw_content(f: &mut Frame, area: Rect, app: &App) {
         ]
         .iter()
         .filter(|&&b| b)
-    .count();
+        .count() as u16;
+        let ph = side.height / panel_count.max(1);
+        let mut y = side.y;
 
-    let grid_area = if panel_count == 0 {
-        area
-    } else {
-        let chunks = Layout::default()
-            .direction(Direction::Horizontal)
-            .constraints([Constraint::Min(40), Constraint::Length(32)])
-            .split(area);
-
-        let constraints: Vec<Constraint> =
-            vec![Constraint::Ratio(1, panel_count as u32); panel_count];
-        let panel_areas = Layout::default()
-            .direction(Direction::Vertical)
-            .constraints(constraints)
-            .split(chunks[1]);
-
-        let mut slot = 0;
         if app.formula_panel_open {
+            let a = Rect::new(side.x, y, side.width, ph);
             f.render_widget(
                 FormulaPanel::new(&app.model, &app.mode, app.formula_cursor),
-                panel_areas[slot],
+                a,
             );
-            slot += 1;
+            y += ph;
         }
         if app.category_panel_open {
+            let a = Rect::new(side.x, y, side.width, ph);
             f.render_widget(
                 CategoryPanel::new(&app.model, &app.mode, app.cat_panel_cursor),
-                panel_areas[slot],
+                a,
             );
-            slot += 1;
+            y += ph;
         }
         if app.view_panel_open {
+            let a = Rect::new(side.x, y, side.width, ph);
             f.render_widget(
                 ViewPanel::new(&app.model, &app.mode, app.view_panel_cursor),
-                panel_areas[slot],
+                a,
             );
         }
-
-        chunks[0]
-    };
-
+    } else {
         f.render_widget(
             GridWidget::new(&app.model, &app.mode, &app.search_query),
-        grid_area,
+            area,
         );
     }
+}
 
 fn draw_tile_bar(f: &mut Frame, area: Rect, app: &App) {
     f.render_widget(TileBar::new(&app.model, &app.mode), area);