fix(core): dont allow to select disabled dates in calendar

projects/core/components/calendar/calendar-sheet.component.ts

@@ -149,6 +149,10 @@ export class TuiCalendarSheet {
     }
 
     protected onItemClick(item: TuiDay): void {
+        if (this.rangeHasDisabledDay(item)) {
+            return;
+        }
+
         this.dayClick.emit(item);
     }
 
@@ -167,4 +171,24 @@ export class TuiCalendarSheet {
         this.hoveredItem = day;
         this.hoveredItemChange.emit(day);
     }
+
+    private rangeHasDisabledDay(item: TuiDay): boolean {
+        if (this.value instanceof TuiDayRange) {
+            const range = this.getRange(this.value, item);
+
+            for (
+                const day = range.from.toUtcNativeDate();
+                day <= range.to.toUtcNativeDate();
+                day.setDate(day.getDate() + 1)
+            ) {
+                const tuiDay = TuiDay.fromLocalNativeDate(day);
+
+                if (this.disabledItemHandler(tuiDay)) {
+                    return true;
+                }
+            }
+        }
+
+        return false;
+    }
 }

projects/demo-playwright/tests/kit/calendar-range/calendar-range.pw.spec.ts

@@ -92,5 +92,32 @@ test.describe('CalendarRange', () => {
 
             await expect(example).toHaveScreenshot('06-maximum-month-with-items.png');
         });
+
+        test('Dont allow to select disabled dates in calendar', async ({page}) => {
+            await tuiGoto(page, `${DemoRoute.CalendarRange}/API?disabledItemHandler$=1`);
+
+            await expect(example).toHaveScreenshot('08-disabled-dates-1-default.png');
+
+            const getCells = (): Locator =>
+                page.locator('[automation-id="tui-calendar-sheet__cell"]');
+
+            await getCells().nth(1).click();
+
+            await expect(example).toHaveScreenshot('08-disabled-dates-2-select-from.png');
+
+            await getCells().nth(9).hover();
+
+            await expect(example).toHaveScreenshot('08-disabled-dates-3-hover-to.png');
+
+            await getCells().nth(9).click();
+            await page.mouse.click(100, 100); // clear focus
+
+            await expect(example).toHaveScreenshot('08-disabled-dates-4-click-to.png');
+
+            await getCells().nth(0).click();
+            await page.mouse.click(100, 100); // clear focus
+
+            await expect(example).toHaveScreenshot('08-disabled-dates-5-click-to.png');
+        });
     });
 });