feat(datetime): add border property to highlightedDates

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',
+          },
         ];
       });
 

core/src/components/datetime/test/highlighted-dates/index.html

@@ -78,6 +78,10 @@ <h2>Highlight Today</h2>
           textColor: 'blue',
           backgroundColor: 'lightblue',
         },
+        {
+          date: '2023-01-07',
+          border: '2px dotted red',
+        },
       ];
 
       document.querySelector('#withCallback').highlightedDates = (isoString) => {
@@ -103,6 +107,7 @@ <h2>Highlight Today</h2>
           date: new Date().toISOString().split('T')[0],
           textColor: 'purple',
           backgroundColor: 'pink',
+          border: '2px solid purple',
         },
       ];
     </script>

core/src/components/datetime/utils/state.ts

@@ -207,6 +207,7 @@ export const getHighlightStyles = (
       return {
         textColor: matchingHighlight.textColor,
         backgroundColor: matchingHighlight.backgroundColor,
+        border: matchingHighlight.border,
       } as DatetimeHighlightStyle;
     }
   } else {