From f1ddbeadaf53a489cc30fc50c5c148a42d473aaf Mon Sep 17 00:00:00 2001
From: mikiher <mikiher@gmail.com>
Date: Sat, 17 Aug 2024 06:08:32 +0300
Subject: [PATCH] Refactor menu keyoboard navigation into mixin

---
 .../modals/EditSeriesInputInnerModal.vue      |  9 +-
 client/components/ui/InputDropdown.vue        | 10 ++-
 client/components/ui/MultiSelect.vue          | 57 ++-----------
 .../components/ui/MultiSelectQueryInput.vue   | 58 ++-----------
 client/mixins/menuKeyboardNavigation.js       | 83 +++++++++++++++++++
 5 files changed, 110 insertions(+), 107 deletions(-)
 create mode 100644 client/mixins/menuKeyboardNavigation.js

diff --git a/client/components/modals/EditSeriesInputInnerModal.vue b/client/components/modals/EditSeriesInputInnerModal.vue
index 628f6829..c70097a0 100644
--- a/client/components/modals/EditSeriesInputInnerModal.vue
+++ b/client/components/modals/EditSeriesInputInnerModal.vue
@@ -8,7 +8,7 @@
         <div class="bg-bg rounded-lg px-2 py-6 sm:p-6 md:p-8" @click.stop>
           <div class="flex">
             <div class="flex-grow p-1 min-w-48 sm:min-w-64 md:min-w-80">
-              <ui-input-dropdown ref="newSeriesSelect" v-model="selectedSeries.name" :items="existingSeriesNames" :disabled="!isNewSeries" :label="$strings.LabelSeriesName" />
+              <ui-input-dropdown ref="newSeriesSelect" v-model="selectedSeries.name" :items="existingSeriesNames" :disabled="!isNewSeries" :label="$strings.LabelSeriesName" @input="seriesNameInputHandler" />
             </div>
             <div class="w-24 sm:w-28 md:w-40 p-1">
               <ui-text-input-with-label ref="sequenceInput" v-model="selectedSeries.sequence" :label="$strings.LabelSequence" />
@@ -66,6 +66,11 @@ export default {
     }
   },
   methods: {
+    seriesNameInputHandler() {
+      if (this.$refs.sequenceInput) {
+        this.$refs.sequenceInput.setFocus()
+      }
+    },
     setInputFocus() {
       if (this.isNewSeries) {
         // Focus on series input if new series
@@ -134,4 +139,4 @@ export default {
   },
   mounted() {}
 }
-</script>
\ No newline at end of file
+</script>
diff --git a/client/components/ui/InputDropdown.vue b/client/components/ui/InputDropdown.vue
index 1567fd5b..314bc6e2 100644
--- a/client/components/ui/InputDropdown.vue
+++ b/client/components/ui/InputDropdown.vue
@@ -4,13 +4,13 @@
     <div ref="wrapper" class="relative">
       <form @submit.prevent="submitForm">
         <div ref="inputWrapper" class="input-wrapper flex-wrap relative w-full shadow-sm flex items-center border border-gray-600 rounded px-2 py-2" :class="disabled ? 'pointer-events-none bg-black-300 text-gray-400' : 'bg-primary'">
-          <input ref="input" v-model="textInput" :disabled="disabled" :readonly="!editable" class="h-full w-full bg-transparent focus:outline-none px-1" @focus="inputFocus" @blur="inputBlur" />
+          <input ref="input" v-model="textInput" :disabled="disabled" :readonly="!editable" class="h-full w-full bg-transparent focus:outline-none px-1" @focus="inputFocus" @blur="inputBlur" @keydown="keydownHandler" />
         </div>
       </form>
 
       <ul ref="menu" v-show="isFocused && itemsToShow.length" class="absolute z-50 mt-0 w-full bg-bg border border-black-200 shadow-lg max-h-56 rounded py-1 text-base ring-1 ring-black ring-opacity-5 overflow-auto focus:outline-none sm:text-sm" role="listbox" aria-labelledby="listbox-label">
         <template v-for="item in itemsToShow">
-          <li :key="item" class="text-gray-50 select-none relative py-2 pr-3 cursor-pointer hover:bg-black-400" role="option" @click="clickedOption($event, item)" @mouseup.stop.prevent @mousedown.prevent>
+          <li :key="item" class="text-gray-50 select-none relative py-2 pr-3 cursor-pointer hover:bg-black-400" :class="isMenuItemSelected(item) ? 'text-yellow-300' : ''" role="option" @click="clickedOption($event, item)" @mouseup.stop.prevent @mousedown.prevent>
             <div class="flex items-center">
               <span class="font-normal ml-3 block truncate">{{ item }}</span>
             </div>
@@ -30,7 +30,10 @@
 </template>
 
 <script>
+import menuKeyboardNavigationMixin from '@/mixins/menuKeyboardNavigation'
+
 export default {
+  mixins: [menuKeyboardNavigationMixin],
   props: {
     value: [String, Number],
     disabled: Boolean,
@@ -81,6 +84,9 @@ export default {
     }
   },
   methods: {
+    keydownHandler(e) {
+      this.menuNavigationHandler(e)
+    },
     setFocus() {
       if (this.$refs.input && this.editable) this.$refs.input.focus()
     },
diff --git a/client/components/ui/MultiSelect.vue b/client/components/ui/MultiSelect.vue
index 7632827f..37018262 100644
--- a/client/components/ui/MultiSelect.vue
+++ b/client/components/ui/MultiSelect.vue
@@ -37,7 +37,10 @@
 </template>
 
 <script>
+import menuKeyboardNavigationMixin from '@/mixins/menuKeyboardNavigation'
+
 export default {
+  mixins: [menuKeyboardNavigationMixin],
   props: {
     value: {
       type: Array,
@@ -63,8 +66,7 @@ export default {
       typingTimeout: null,
       isFocused: false,
       menu: null,
-      filteredItems: null,
-      selectedMenuItemIndex: null
+      filteredItems: null
     }
   },
   watch: {
@@ -119,34 +121,8 @@ export default {
       this.filteredItems = results || []
     },
     keydownInput(event) {
-      let items = this.itemsToShow
-      if (event.key === 'ArrowDown' || event.key === 'ArrowUp') {
-        event.preventDefault()
-        if (!items.length) return
-        if (event.key === 'ArrowDown') {
-          if (this.selectedMenuItemIndex === null) {
-            this.selectedMenuItemIndex = 0
-          } else {
-            this.selectedMenuItemIndex = Math.min(this.selectedMenuItemIndex + 1, items.length - 1)
-          }
-        } else if (event.key === 'ArrowUp') {
-          if (this.selectedMenuItemIndex === null) {
-            this.selectedMenuItemIndex = items.length - 1
-          } else {
-            this.selectedMenuItemIndex = Math.max(this.selectedMenuItemIndex - 1, 0)
-          }
-        }
-        this.recalcScroll()
-        return
-      } else if (event.key === 'Enter') {
-        if (this.selectedMenuItemIndex !== null) {
-          this.clickedOption(event, items[this.selectedMenuItemIndex])
-        } else {
-          this.submitForm()
-        }
-        return
-      }
-      this.selectedMenuItemIndex = null
+      this.menuNavigationHandler(event)
+
       clearTimeout(this.typingTimeout)
       this.typingTimeout = setTimeout(() => {
         this.search()
@@ -161,24 +137,6 @@ export default {
         this.recalcMenuPos()
       }, 50)
     },
-    recalcScroll() {
-      if (!this.menu) return
-      var menuItems = this.menu.querySelectorAll('li')
-      if (!menuItems.length) return
-      var selectedItem = menuItems[this.selectedMenuItemIndex]
-      if (!selectedItem) return
-      var menuHeight = this.menu.offsetHeight
-      var itemHeight = selectedItem.offsetHeight
-      var itemTop = selectedItem.offsetTop
-      var itemBottom = itemTop + itemHeight
-      if (itemBottom > this.menu.scrollTop + menuHeight) {
-        let menuPaddingBottom = parseFloat(window.getComputedStyle(this.menu).paddingBottom)
-        this.menu.scrollTop = itemBottom - menuHeight + menuPaddingBottom
-      } else if (itemTop < this.menu.scrollTop) {
-        let menuPaddingTop = parseFloat(window.getComputedStyle(this.menu).paddingTop)
-        this.menu.scrollTop = itemTop - menuPaddingTop
-      }
-    },
     recalcMenuPos() {
       if (!this.menu || !this.$refs.inputWrapper) return
       var boundingBox = this.$refs.inputWrapper.getBoundingClientRect()
@@ -317,9 +275,6 @@ export default {
       this.textInput = null
       this.currentSearch = null
       this.selectedMenuItemIndex = null
-      this.$nextTick(() => {
-        this.blur()
-      })
     },
     submitForm() {
       if (!this.textInput) return
diff --git a/client/components/ui/MultiSelectQueryInput.vue b/client/components/ui/MultiSelectQueryInput.vue
index 152638db..099ee709 100644
--- a/client/components/ui/MultiSelectQueryInput.vue
+++ b/client/components/ui/MultiSelectQueryInput.vue
@@ -20,7 +20,7 @@
 
       <ul ref="menu" v-show="showMenu" class="absolute z-60 w-full bg-bg border border-black-200 shadow-lg max-h-56 rounded-md py-1 text-base ring-1 ring-black ring-opacity-5 overflow-auto focus:outline-none sm:text-sm" role="listbox" aria-labelledby="listbox-label">
         <template v-for="item in itemsToShow">
-          <li :key="item.id" class="text-gray-50 select-none relative py-2 pr-9 cursor-pointer hover:bg-black-400" :class="itemsToShow[selectedMenuItemIndex] === item ? 'text-yellow-300' : ''" role="option" @click="clickedOption($event, item)" @mouseup.stop.prevent @mousedown.prevent>
+          <li :key="item.id" class="text-gray-50 select-none relative py-2 pr-9 cursor-pointer hover:bg-black-400" :class="isMenuItemSelected(item) ? 'text-yellow-300' : ''" role="option" @click="clickedOption($event, item)" @mouseup.stop.prevent @mousedown.prevent>
             <div class="flex items-center">
               <span class="font-normal ml-3 block truncate">{{ item.name }}</span>
             </div>
@@ -40,7 +40,10 @@
 </template>
 
 <script>
+import menuKeyboardNavigationMixin from '@/mixins/menuKeyboardNavigation'
+
 export default {
+  mixins: [menuKeyboardNavigationMixin],
   props: {
     value: {
       type: Array,
@@ -63,8 +66,7 @@ export default {
       typingTimeout: null,
       isFocused: false,
       menu: null,
-      items: [],
-      selectedMenuItemIndex: null
+      items: []
     }
   },
   watch: {
@@ -124,34 +126,7 @@ export default {
       this.items = results || []
     },
     keydownInput(event) {
-      let items = this.itemsToShow
-      if (event.key === 'ArrowDown' || event.key === 'ArrowUp') {
-        event.preventDefault()
-        if (!items.length) return
-        if (event.key === 'ArrowDown') {
-          if (this.selectedMenuItemIndex === null) {
-            this.selectedMenuItemIndex = 0
-          } else {
-            this.selectedMenuItemIndex = Math.min(this.selectedMenuItemIndex + 1, items.length - 1)
-          }
-        } else if (event.key === 'ArrowUp') {
-          if (this.selectedMenuItemIndex === null) {
-            this.selectedMenuItemIndex = items.length - 1
-          } else {
-            this.selectedMenuItemIndex = Math.max(this.selectedMenuItemIndex - 1, 0)
-          }
-        }
-        this.recalcScroll()
-        return
-      } else if (event.key === 'Enter') {
-        if (this.selectedMenuItemIndex !== null) {
-          this.clickedOption(event, items[this.selectedMenuItemIndex])
-        } else {
-          this.submitForm()
-        }
-        return
-      }
-      this.selectedMenuItemIndex = null
+      this.menuNavigationHandler(event)
       clearTimeout(this.typingTimeout)
       this.typingTimeout = setTimeout(() => {
         this.search()
@@ -166,24 +141,6 @@ export default {
         this.recalcMenuPos()
       }, 50)
     },
-    recalcScroll() {
-      if (!this.menu) return
-      var menuItems = this.menu.querySelectorAll('li')
-      if (!menuItems.length) return
-      var selectedItem = menuItems[this.selectedMenuItemIndex]
-      if (!selectedItem) return
-      var menuHeight = this.menu.offsetHeight
-      var itemHeight = selectedItem.offsetHeight
-      var itemTop = selectedItem.offsetTop
-      var itemBottom = itemTop + itemHeight
-      if (itemBottom > this.menu.scrollTop + menuHeight) {
-        let menuPaddingBottom = parseFloat(window.getComputedStyle(this.menu).paddingBottom)
-        this.menu.scrollTop = itemBottom - menuHeight + menuPaddingBottom
-      } else if (itemTop < this.menu.scrollTop) {
-        let menuPaddingTop = parseFloat(window.getComputedStyle(this.menu).paddingTop)
-        this.menu.scrollTop = itemTop - menuPaddingTop
-      }
-    },
     recalcMenuPos() {
       if (!this.menu || !this.$refs.inputWrapper) return
       var boundingBox = this.$refs.inputWrapper.getBoundingClientRect()
@@ -323,9 +280,6 @@ export default {
       this.textInput = null
       this.currentSearch = null
       this.selectedMenuItemIndex = null
-      this.$nextTick(() => {
-        this.blur()
-      })
     },
     submitForm() {
       if (!this.textInput) return
diff --git a/client/mixins/menuKeyboardNavigation.js b/client/mixins/menuKeyboardNavigation.js
new file mode 100644
index 00000000..96a70c74
--- /dev/null
+++ b/client/mixins/menuKeyboardNavigation.js
@@ -0,0 +1,83 @@
+/**
+ * Mixin for keyboard navigation in dropdown menus.
+ * This can be used in any component that has a dropdown menu with <li> items.
+ * The following example shows how to use this mixin in your component:
+ * <template>
+ *   <div>
+ *     <input type="text" @keydown="menuNavigationHandler">
+ *     <ul ref="menu">
+ *       <li v-for="(item, index) in itemsToShow" :key="index" :class="isMenuItemSelected(item) ? ... : ''" @click="clickedOption($event, item)">
+ *         {{ item }}
+ *       </li>
+ *     </ul>
+ *   </div>
+ * </template>
+ *
+ * This mixin assumes the following are defined in your component:
+ * itemsToShow: Array of items to show in the dropdown
+ * clickedOption: Event handler for when an item is clicked
+ * submitForm: Event handler for when the form is submitted
+ *
+ * It also assumes you have a ref="menu" on the menu element.
+ */
+export default {
+  data() {
+    return {
+      selectedMenuItemIndex: null
+    }
+  },
+  methods: {
+    menuNavigationHandler(event) {
+      let items = this.itemsToShow
+      if (event.key === 'ArrowDown' || event.key === 'ArrowUp') {
+        event.preventDefault()
+        if (!items.length) return
+        if (event.key === 'ArrowDown') {
+          if (this.selectedMenuItemIndex === null) {
+            this.selectedMenuItemIndex = 0
+          } else {
+            this.selectedMenuItemIndex = Math.min(this.selectedMenuItemIndex + 1, items.length - 1)
+          }
+        } else if (event.key === 'ArrowUp') {
+          if (this.selectedMenuItemIndex === null) {
+            this.selectedMenuItemIndex = items.length - 1
+          } else {
+            this.selectedMenuItemIndex = Math.max(this.selectedMenuItemIndex - 1, 0)
+          }
+        }
+        this.recalcScroll()
+      } else if (event.key === 'Enter') {
+        event.preventDefault()
+        if (this.selectedMenuItemIndex !== null) {
+          this.clickedOption(event, items[this.selectedMenuItemIndex])
+        } else {
+          this.submitForm()
+        }
+      } else {
+        this.selectedMenuItemIndex = null
+      }
+    },
+    recalcScroll() {
+      const menu = this.$refs.menu
+      if (!menu) return
+      var menuItems = menu.querySelectorAll('li')
+      if (!menuItems.length) return
+      var selectedItem = menuItems[this.selectedMenuItemIndex]
+      if (!selectedItem) return
+      var menuHeight = menu.offsetHeight
+      var itemHeight = selectedItem.offsetHeight
+      var itemTop = selectedItem.offsetTop
+      var itemBottom = itemTop + itemHeight
+      if (itemBottom > menu.scrollTop + menuHeight) {
+        let menuPaddingBottom = parseFloat(window.getComputedStyle(menu).paddingBottom)
+        menu.scrollTop = itemBottom - menuHeight + menuPaddingBottom
+      } else if (itemTop < menu.scrollTop) {
+        let menuPaddingTop = parseFloat(window.getComputedStyle(menu).paddingTop)
+        menu.scrollTop = itemTop - menuPaddingTop
+      }
+    },
+    isMenuItemSelected(item) {
+      return this.selectedMenuItemIndex !== null && this.itemsToShow[this.selectedMenuItemIndex] === item
+    }
+  }
+}