From 57a21adb38331ee5d74dacd1b0a2568f41a2d21e Mon Sep 17 00:00:00 2001
From: Liam DeBeasi <liamdebeasi@users.noreply.github.com>
Date: Tue, 26 Jul 2022 13:40:05 -0400
Subject: [PATCH] fix(datetime): switching presentation closes month/year
 picker (#25667)

---
 core/src/components/datetime/datetime.tsx     |  7 +++++++
 .../test/presentation/datetime.e2e.ts         | 21 +++++++++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/core/src/components/datetime/datetime.tsx b/core/src/components/datetime/datetime.tsx
index 86b9b7ca4e..8008e4a8fe 100644
--- a/core/src/components/datetime/datetime.tsx
+++ b/core/src/components/datetime/datetime.tsx
@@ -1027,6 +1027,13 @@ export class Datetime implements ComponentInterface {
     this.destroyInteractionListeners();
 
     this.initializeListeners();
+
+    /**
+     * The month/year picker from the date interface
+     * should be closed as it is not available in non-date
+     * interfaces.
+     */
+    this.showMonthAndYear = false;
   }
 
   private processValue = (value?: string | null) => {
diff --git a/core/src/components/datetime/test/presentation/datetime.e2e.ts b/core/src/components/datetime/test/presentation/datetime.e2e.ts
index 8f254747c2..137c625fad 100644
--- a/core/src/components/datetime/test/presentation/datetime.e2e.ts
+++ b/core/src/components/datetime/test/presentation/datetime.e2e.ts
@@ -83,6 +83,27 @@ test.describe('datetime: presentation', () => {
 
     expect(ionChangeSpy.length).toBe(1);
   });
+
+  test('switching presentation should close month/year picker', async ({ page }, testInfo) => {
+    await test.skip(testInfo.project.metadata.rtl === true, 'This feature does not have RTL specific behaviors.');
+
+    await page.setContent(`
+      <ion-datetime presentation="date"></ion-datetime>
+    `);
+
+    await page.waitForSelector('.datetime-ready');
+
+    const datetime = page.locator('ion-datetime');
+    const monthYearButton = page.locator('ion-datetime .calendar-month-year');
+    await monthYearButton.click();
+
+    await expect(datetime).toHaveClass(/show-month-and-year/);
+
+    await datetime.evaluate((el: HTMLIonDatetimeElement) => (el.presentation = 'time'));
+    await page.waitForChanges();
+
+    await expect(datetime).not.toHaveClass(/show-month-and-year/);
+  });
 });
 
 test.describe('datetime: presentation: time', () => {