feat: scope the no-options slot (#1083)

Resolves #1071, Resolves #1081

https://vue-select.org/guide/slots.html#improving-the-default-no-options-text

docs/.vuepress/components/BetterNoOptions.vue

@@ -0,0 +1,16 @@
+<template>
+  <v-select>
+    <template v-slot:no-options="{ search, searching }">
+      <template v-if="searching">
+        No results found for <em>{{ search }}</em>.
+      </template>
+      <em style="opacity: 0.5;" v-else>Start typing to search for a country.</em>
+    </template>
+  </v-select>
+</template>
+
+<script>
+export default {
+  name: 'BetterNoOptions',
+};
+</script>

docs/api/slots.md

@@ -7,13 +7,16 @@ Slots can be used to change the look and feel of the UI, or to simply swap out t
 
 ### `selected-option`
 
-#### Scope: 
+#### Scope:
 
 - `option {Object}` - A selected option
 
 ```html
-<slot name="selected-option" v-bind="(typeof option === 'object')?option:{[label]: option}">
+<slot
-	{{ getOptionLabel(option) }}
+  name="selected-option"
+  v-bind="(typeof option === 'object')?option:{[label]: option}"
+>
+  {{ getOptionLabel(option) }}
 </slot>
 ```
 
@@ -27,16 +30,32 @@ Slots can be used to change the look and feel of the UI, or to simply swap out t
 - `multiple {Boolean}` - If the component supports the selection of multiple values
 
 ```html
-<slot v-for="option in valueAsArray" name="selected-option-container"
+<slot
-			:option="(typeof option === 'object')?option:{[label]: option}" :deselect="deselect" :multiple="multiple" :disabled="disabled">
+  v-for="option in valueAsArray"
-	<span class="selected-tag" v-bind:key="option.index">
+  name="selected-option-container"
-		<slot name="selected-option" v-bind="(typeof option === 'object')?option:{[label]: option}">
+  :option="(typeof option === 'object')?option:{[label]: option}"
-			{{ getOptionLabel(option) }}
+  :deselect="deselect"
-		</slot>
+  :multiple="multiple"
-		<button v-if="multiple" :disabled="disabled" @click="deselect(option)" type="button" class="close" aria-label="Remove option">
+  :disabled="disabled"
-			<span aria-hidden="true">&times;</span>
+>
-		</button>
+  <span class="selected-tag" v-bind:key="option.index">
-	</span>
+    <slot
+      name="selected-option"
+      v-bind="(typeof option === 'object')?option:{[label]: option}"
+    >
+      {{ getOptionLabel(option) }}
+    </slot>
+    <button
+      v-if="multiple"
+      :disabled="disabled"
+      @click="deselect(option)"
+      type="button"
+      class="close"
+      aria-label="Remove option"
+    >
+      <span aria-hidden="true">&times;</span>
+    </button>
+  </span>
 </slot>
 ```
 
@@ -44,28 +63,56 @@ Slots can be used to change the look and feel of the UI, or to simply swap out t
 
 ### `spinner`
 
+#### Scope:
+
+- `loading {Boolean}` - if the component is in a loading state
+
 ```html
-<slot name="spinner">
+<slot name="spinner" v-bind="scope.spinner">
-	<div class="spinner" v-show="mutableLoading">Loading...</div>
+  <div class="vs__spinner" v-show="mutableLoading">Loading...</div>
 </slot>
 ```
 
-### `no-options`
+### `open-indicator`
 
-```html
+```js
-<slot name="no-options">Sorry, no matching options.</slot>
+attributes : {
+  'ref': 'openIndicator',
+  'role': 'presentation',
+  'class': 'vs__open-indicator',
+}
+```
+
+```vue
+<slot name="open-indicator" v-bind="scope.openIndicator">
+  <component :is="childComponents.OpenIndicator" v-if="!noDrop" v-bind="scope.openIndicator.attributes"/>
+</slot>
 ```
 
 ## Dropdown
 
 ### `option`
 
-#### Scope:
-
 - `option {Object}` - The currently iterated option from `filteredOptions`
 
 ```html
-<slot name="option" v-bind="(typeof option === 'object')?option:{[label]: option}">
+<slot
-	{{ getOptionLabel(option) }}
+  name="option"
+  v-bind="(typeof option === 'object')?option:{[label]: option}"
+>
+  {{ getOptionLabel(option) }}
+</slot>
+```
+
+### `no-options`
+
+The no options slot is displayed in the dropdown when `filteredOptions.length === 0`.
+
+- `search {String}` - the current search text
+- `searching {Boolean}` - if the component has search text
+
+```vue
+<slot name="no-options" v-bind="scope.noOptions">
+  Sorry, no matching options.
 </slot>
 ```

docs/guide/slots.md

@@ -1,22 +1,32 @@
 ::: tip 🚧
 This section of the guide is a work in progress! Check back soon for an update.
-Vue Select currently offers quite a few scoped slots, and you can check out the 
+Vue Select currently offers quite a few scoped slots, and you can check out the
 [API Docs for Slots](../api/slots.md) in the meantime while a good guide is put together.
 :::
 
-#### Scoped Slot `option`
+### Scoped Slot `option`
 
 vue-select provides the scoped `option` slot in order to create custom dropdown templates.
 
 ```html
 <v-select :options="options" label="title">
-    <template v-slot:option="option">
+  <template v-slot:option="option">
-        <span :class="option.icon"></span>
+    <span :class="option.icon"></span>
-        {{ option.title }}
+    {{ option.title }}
-    </template>
+  </template>
-  </v-select>
+</v-select>
-``` 
+```
 
 Using the `option` slot with props `"option"` provides the current option variable to the template.
 
 <CodePen url="NXBwYG" height="500"/>
+
+### Improving the default `no-options` text
+
+The `no-options` slot is displayed in the dropdown when `filteredOptions === 0`. By default, it
+displays _Sorry, no matching options_. You can add more contextual information by using the slot
+in your own apps.
+
+<BetterNoOptions />
+
+<<< @/.vuepress/components/BetterNoOptions.vue

src/components/Select.vue

@@ -70,8 +70,8 @@
               {{ getOptionLabel(option) }}
             </slot>
           </li>
-          <li v-if="!filteredOptions.length" class="vs__no-options" @mousedown.stop="">
+          <li v-if="filteredOptions.length === 0" class="vs__no-options" @mousedown.stop="">
-            <slot name="no-options">Sorry, no matching options.</slot>
+            <slot name="no-options" v-bind="scope.noOptions">Sorry, no matching options.</slot>
           </li>
         </template>
       </ul>
@@ -1013,6 +1013,10 @@
           spinner: {
             loading: this.mutableLoading
           },
+          noOptions: {
+            search: this.search,
+            searching: this.searching,
+          },
           openIndicator: {
             attributes: {
               'ref': 'openIndicator',

tests/unit/Slots.spec.js

@@ -56,4 +56,20 @@ describe('Scoped Slots', () => {
 
       expect(Select.find({ref: 'dropdownMenu'}).text()).toEqual('onetwothree');
     });
+
+  it('noOptions slot receives the current search text', async () => {
+    const noOptions = jest.fn();
+    const Select = mountDefault({}, {
+      scopedSlots: {'no-options': noOptions},
+    });
+
+    Select.vm.search = 'something not there';
+    Select.vm.open = true;
+    await Select.vm.$nextTick();
+
+    expect(noOptions).toHaveBeenCalledWith({
+      search: 'something not there',
+      searching: true,
+    })
+  });
 });