[WIP] Add keyboard focus border for dropdown options

Signed-off-by: Christopher Ng <chrng8@gmail.com>

Author: Pytal

src/components/Select.vue

@@ -107,10 +107,12 @@
               isOptionDeselectable(option) && index === typeAheadPointer,
             'vs__dropdown-option--selected': isOptionSelected(option),
             'vs__dropdown-option--highlight': index === typeAheadPointer,
+            'vs__dropdown-option--kb-focus':
+              isKeyboardNavigation && index === typeAheadPointer,
             'vs__dropdown-option--disabled': !selectable(option),
           }"
           :aria-selected="index === typeAheadPointer ? true : null"
-          @mouseover="selectable(option) ? (typeAheadPointer = index) : null"
+          @mouseover="onMouseOver(option, index)"
           @click.prevent.stop="selectable(option) ? select(option) : null"
         >
           <slot name="option" v-bind="normalizeOptionForSlot(option)">
@@ -675,6 +677,7 @@ export default {
       search: '',
       open: false,
       isComposing: false,
+      isKeyboardNavigation: false,
       pushedTags: [],
       // eslint-disable-next-line vue/no-reserved-keys
       _value: [], // Internal value managed by Vue Select if no `value` prop is passed
@@ -1309,6 +1312,20 @@ export default {
       this.mousedown = false
     },
 
+    /**
+     * Event-Handler for option mouseover
+     * @param {Object|String} option
+     * @param {Number} index
+     * @return {void}
+     */
+    onMouseOver(option, index) {
+      this.isKeyboardNavigation = false
+      if (!this.selectable(option)) {
+        return
+      }
+      this.typeAheadPointer = index
+    },
+
     /**
      * Search <input> KeyBoardEvent handler.
      * @param {KeyboardEvent} e
@@ -1330,6 +1347,7 @@ export default {
         //  up.prevent
         38: (e) => {
           e.preventDefault()
+          this.isKeyboardNavigation = true
           if (!this.open) {
             this.open = true
             return
@@ -1339,6 +1357,7 @@ export default {
         //  down.prevent
         40: (e) => {
           e.preventDefault()
+          this.isKeyboardNavigation = true
           if (!this.open) {
             this.open = true
             return

src/css/global/variables.css

@@ -54,9 +54,12 @@
     --vs-dropdown-option-padding: 3px 20px;
 
     /* Active State */
-    --vs-dropdown-option--active-bg: #5897fb;
+    --vs-dropdown-option--active-bg: #136CFB;
     --vs-dropdown-option--active-color: #fff;
 
+    /* Keyboard Focus State */
+    --vs-dropdown-option--kb-focus-box-shadow: inset 0px 0px 0px 2px #2B2B2B;
+
     /* Deselect State */
     --vs-dropdown-option--deselect-bg: #fb5858;
     --vs-dropdown-option--deselect-color: #fff;

src/css/modules/dropdown-option.css

@@ -14,6 +14,10 @@
     color: var(--vs-dropdown-option--active-color);
 }
 
+.vs__dropdown-option--kb-focus {
+    box-shadow: var(--vs-dropdown-option--kb-focus-box-shadow);
+}
+
 .vs__dropdown-option--deselect {
     background: var(--vs-dropdown-option--deselect-bg);
     color: var(--vs-dropdown-option--deselect-color);