Revert "refactor: mystery model 3"

This reverts commit 4b721f7543.

src/main.rs

@@ -344,59 +344,61 @@ fn draw_title(f: &mut Frame, area: Rect, app: &App) {
 }
 
 fn draw_content(f: &mut Frame, area: Rect, app: &App) {
-    let panel_count = [
+    let side_open = app.formula_panel_open || app.category_panel_open || app.view_panel_open;
-        app.formula_panel_open,
-        app.category_panel_open,
-        app.view_panel_open,
-    ]
-    .iter()
-    .filter(|&&b| b)
-    .count();
 
-    let grid_area = if panel_count == 0 {
+    if side_open {
-        area
+        let side_w = 32u16;
-    } else {
         let chunks = Layout::default()
             .direction(Direction::Horizontal)
-            .constraints([Constraint::Min(40), Constraint::Length(32)])
+            .constraints([Constraint::Min(40), Constraint::Length(side_w)])
             .split(area);
 
-        let constraints: Vec<Constraint> =
+        f.render_widget(
-            vec![Constraint::Ratio(1, panel_count as u32); panel_count];
+            GridWidget::new(&app.model, &app.mode, &app.search_query),
-        let panel_areas = Layout::default()
+            chunks[0],
-            .direction(Direction::Vertical)
+        );
-            .constraints(constraints)
+
-            .split(chunks[1]);
+        let side = chunks[1];
+        let panel_count = [
+            app.formula_panel_open,
+            app.category_panel_open,
+            app.view_panel_open,
+        ]
+        .iter()
+        .filter(|&&b| b)
+        .count() as u16;
+        let ph = side.height / panel_count.max(1);
+        let mut y = side.y;
 
-        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,
             );
         }
-
+    } else {
-        chunks[0]
+        f.render_widget(
-    };
+            GridWidget::new(&app.model, &app.mode, &app.search_query),
-
+            area,
-    f.render_widget(
+        );
-        GridWidget::new(&app.model, &app.mode, &app.search_query),
+    }
-        grid_area,
-    );
 }
 
 fn draw_tile_bar(f: &mut Frame, area: Rect, app: &App) {