feat(datetime): add border property to highlightedDates (#30534)

Issue number: resolves #29833

---------

- Adds the `border` property for customizing the border of highlighted dates
- Adds the `border` to the e2e test for highlightedDates
- Updates screenshots

---------

Co-authored-by: Brandy Smith <6577830+brandyscarney@users.noreply.github.com>

Author: brandyscarney

core/src/components/datetime/datetime-interface.ts

@@ -22,15 +22,15 @@ export type DatetimePresentation = 'date-time' | 'time-date' | 'date' | 'time' |
 
 export type TitleSelectedDatesFormatter = (selectedDates: string[]) => string;
 
-export type DatetimeHighlightStyle =
-  | {
-      textColor: string;
-      backgroundColor?: string;
-    }
-  | {
-      textColor?: string;
-      backgroundColor: string;
-    };
+/**
+ * DatetimeHighlightStyle must include textColor, backgroundColor, or border.
+ * It cannot be an empty object.
+ */
+export type DatetimeHighlightStyle = {
+  textColor?: string;
+  backgroundColor?: string;
+  border?: string;
+} & ({ textColor: string } | { backgroundColor: string } | { border: string });
 
 export type DatetimeHighlight = { date: string } & DatetimeHighlightStyle;
 

core/src/components/datetime/datetime.tsx

@@ -2335,6 +2335,7 @@ export class Datetime implements ComponentInterface {
                         `${dateStyle ? dateStyle.backgroundColor : ''}`,
                         'important'
                       );
+                      el.style.setProperty('border', `${dateStyle ? dateStyle.border : ''}`, 'important');
                     }
                   }}
                   tabindex="-1"

core/src/components/datetime/test/highlighted-dates/datetime.e2e.ts

@@ -21,16 +21,19 @@ configs({ directions: ['ltr'] }).forEach(({ title, screenshot, config }) => {
             date: '2023-01-01', // ensure selected date style overrides highlight
             textColor: '#800080',
             backgroundColor: '#ffc0cb',
+            border: '2px solid purple',
           },
           {
             date: '2023-01-02',
             textColor: '#b22222',
             backgroundColor: '#fa8072',
+            border: '2px solid purple',
           },
           {
             date: '2023-01-03',
             textColor: '#0000ff',
             backgroundColor: '#add8e6',
+            border: '2px solid purple',
           },
         ];
       });
@@ -52,20 +55,23 @@ configs({ directions: ['ltr'] }).forEach(({ title, screenshot, config }) => {
             return {
               textColor: '#b22222',
               backgroundColor: '#fa8072',
+              border: '2px solid purple',
             };
           }
 
           if (utcDay % 5 === 0) {
             return {
               textColor: '#800080',
               backgroundColor: '#ffc0cb',
+              border: '2px solid purple',
             };
           }
 
           if (utcDay % 3 === 0) {
             return {
               textColor: '#0000ff',
               backgroundColor: '#add8e6',
+              border: '2px solid purple',
             };
           }
 
@@ -77,7 +83,7 @@ configs({ directions: ['ltr'] }).forEach(({ title, screenshot, config }) => {
       await expect(datetime).toHaveScreenshot(screenshot(`datetime-highlightedDates-callback`));
     });
 
-    test('should render highlights correctly when only using one color or the other', async ({ page }) => {
+    test('should render highlights correctly when only using only one color property', async ({ page }) => {
       const datetime = page.locator('ion-datetime');
 
       await datetime.evaluate((el: HTMLIonDatetimeElement) => {
@@ -90,6 +96,10 @@ configs({ directions: ['ltr'] }).forEach(({ title, screenshot, config }) => {
             date: '2023-01-03',
             textColor: '#0000ff',
           },
+          {
+            date: '2023-01-04',
+            border: '2px solid purple',
+          },
         ];
       });