fix(theming): App order selector should keep the focus on click

Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>

apps/theming/src/components/AppOrderSelector.vue

@@ -2,6 +2,7 @@
 	<ol ref="listElement" data-cy-app-order class="order-selector">
 		<AppOrderSelectorElement v-for="app,index in appList"
 			:key="`${app.id}${renderCount}`"
+			ref="selectorElements"
 			:app="app"
 			:is-first="index === 0 || !!appList[index - 1].default"
 			:is-last="index === value.length - 1"
@@ -14,7 +15,7 @@
 
 <script lang="ts">
 import { useSortable } from '@vueuse/integrations/useSortable'
-import { PropType, computed, defineComponent, ref } from 'vue'
+import { PropType, computed, defineComponent, onUpdated, ref } from 'vue'
 
 import AppOrderSelectorElement from './AppOrderSelectorElement.vue'
 
@@ -81,6 +82,19 @@ export default defineComponent({
 		 */
 		useSortable(listElement, appList, { filter: '.order-selector-element--disabled' })
 
+		/**
+		 * Array of all AppOrderSelectorElement components used to for keeping the focus after button click
+		 */
+		const selectorElements = ref<InstanceType<typeof AppOrderSelectorElement>[]>([])
+
+		/**
+		 * We use the updated hook here to verify all selector elements keep the focus on the last pressed button
+		 * This is needed to be done in this component to make sure Sortable.JS has finished sorting the elements before focussing an element
+		 */
+		onUpdated(() => {
+			selectorElements.value.forEach(element => element.keepFocus())
+		})
+
 		/**
 		 * Handle element is moved up
 		 * @param index The index of the element that is moved
@@ -119,6 +133,7 @@ export default defineComponent({
 			moveUp,
 
 			renderCount,
+			selectorElements,
 		}
 	},
 })

apps/theming/src/components/AppOrderSelectorElement.vue

@@ -52,7 +52,7 @@
 import type { PropType } from 'vue'
 
 import { translate as t } from '@nextcloud/l10n'
-import { defineComponent, nextTick, onUpdated, ref } from 'vue'
+import { defineComponent, nextTick, ref } from 'vue'
 
 import IconArrowDown from 'vue-material-design-icons/ArrowDown.vue'
 import IconArrowUp from 'vue-material-design-icons/ArrowUp.vue'
@@ -116,10 +116,12 @@ export default defineComponent({
 		}
 
 		/**
-		 * onUpdated hook is used to reset the focus on the last used button (if requested)
+		 * Reset the focus on the last used button.
 		 * If the button is now visible anymore (because this element is the first/last) then the opposite button is focussed
+		 *
+		 * This function is exposed to the "AppOrderSelector" component which triggers this when the list was successfully rerendered
 		 */
-		onUpdated(() => {
+		const keepFocus = () => {
 			if (needsFocus !== 0) {
 				// focus requested
 				if ((needsFocus === 1 || props.isLast) && !props.isFirst) {
@@ -130,7 +132,7 @@ export default defineComponent({
 				}
 			}
 			needsFocus = 0
-		})
+		}
 
 		return {
 			buttonUp,
@@ -139,6 +141,8 @@ export default defineComponent({
 			moveUp,
 			moveDown,
 
+			keepFocus,
+
 			t,
 		}
 	},