Add hacked multiselect for testing

packages/builder/src/components/common/LinkedRecordSelector.svelte

@@ -4,31 +4,30 @@
   import api from "builderStore/api"
   import { Select, Label } from "@budibase/bbui"
   import { capitalise } from "../../helpers"
+  import MultiSelect from "components/common/MultiSelect.svelte"
 
   export let schema
   export let linkedRecords = []
 
-  let records = []
 
   $: label = capitalise(schema.name)
   $: linkedModelId = schema.modelId
   $: linkedModel = $backendUiStore.models.find(
     model => model._id === linkedModelId
   )
+  $: promise = fetchRecords(linkedModelId)
 
-  async function fetchRecords() {
-    const FETCH_RECORDS_URL = `/api/${linkedModelId}/records`
+  async function fetchRecords(linkedModelId) {
+    const FETCH_RECORDS_URL = `/api/${}/records`
     const response = await api.get(FETCH_RECORDS_URL)
-    records = await response.json()
+    const result = await response.json()
+    console.log(result)
+    return result
   }
 
   function getPrettyName(record) {
     return record[linkedModel.primaryDisplay || "_id"]
   }
-
-  onMount(() => {
-    fetchRecords()
-  })
 </script>
 
 {#if linkedModel.primaryDisplay == null}
@@ -39,10 +38,16 @@
     table.
   </Label>
 {:else}
-  <Select thin secondary bind:value={linkedRecords[0]} {label}>
-    <option value="">Choose an option</option>
-    {#each records as record}
-      <option value={record._id}>{getPrettyName(record)}</option>
-    {/each}
-  </Select>
+  {#await promise then records}
+    <MultiSelect
+      thin
+      secondary
+      bind:value={linkedRecords}
+      {label}
+      placeholder="Choose an option">
+      {#each records as record}
+        <option value={record._id}>{getPrettyName(record)}</option>
+      {/each}
+    </MultiSelect>
+  {/await}
 {/if}

packages/builder/src/components/common/MultiSelect.svelte

@@ -0,0 +1,336 @@
+<script>
+  import { onMount } from "svelte"
+  import { fly } from "svelte/transition"
+  import { Label } from "@budibase/bbui"
+
+  export let value = []
+  export let readonly = false
+  export let placeholder = ""
+  export let label
+
+  let input,
+    inputValue,
+    options = [],
+    activeOption,
+    showOptions = false,
+    selected = {},
+    first = true,
+    slot
+  const iconClearPath =
+    "M19 6.41L17.59 5 12 10.59 6.41 5 5 6.41 10.59 12 5 17.59 6.41 19 12 13.41 17.59 19 19 17.59 13.41 12z"
+
+  onMount(() => {
+    slot.querySelectorAll("option").forEach(o => {
+      o.selected && !value.includes(o.value) && (value = [...value, o.value])
+      options = [...options, { value: o.value, name: o.textContent }]
+    })
+    value &&
+      (selected = options.reduce(
+        (obj, op) =>
+          value.includes(op.value) ? { ...obj, [op.value]: op } : obj,
+        {}
+      ))
+    first = false
+    console.log(options)
+  })
+
+  $: if (!first) value = Object.values(selected).map(o => o.value)
+  $: filtered = options.filter(o =>
+    inputValue ? o.name.toLowerCase().includes(inputValue.toLowerCase()) : o
+  )
+  $: if (
+    (activeOption && !filtered.includes(activeOption)) ||
+    (!activeOption && inputValue)
+  )
+    activeOption = filtered[0]
+
+  function add(token) {
+    if (!readonly) selected[token.value] = token
+  }
+
+  function remove(value) {
+    if (!readonly) {
+      const { [value]: val, ...rest } = selected
+      selected = rest
+    }
+  }
+
+  function optionsVisibility(show) {
+    if (readonly) return
+    if (typeof show === "boolean") {
+      showOptions = show
+      show && input.focus()
+    } else {
+      showOptions = !showOptions
+    }
+    if (!showOptions) {
+      activeOption = undefined
+    }
+  }
+
+  function handleKeyup(e) {
+    if (e.keyCode === 13) {
+      Object.keys(selected).includes(activeOption.value)
+        ? remove(activeOption.value)
+        : add(activeOption)
+      inputValue = ""
+    }
+    if ([38, 40].includes(e.keyCode)) {
+      // up and down arrows
+      const increment = e.keyCode === 38 ? -1 : 1
+      const calcIndex = filtered.indexOf(activeOption) + increment
+      activeOption =
+        calcIndex < 0
+          ? filtered[filtered.length - 1]
+          : calcIndex === filtered.length
+          ? filtered[0]
+          : filtered[calcIndex]
+    }
+  }
+
+  function handleBlur(e) {
+    optionsVisibility(false)
+  }
+
+  function handleTokenClick(e) {
+    if (e.target.closest(".token-remove")) {
+      e.stopPropagation()
+      remove(e.target.closest(".token").dataset.id)
+    } else if (e.target.closest(".remove-all")) {
+      selected = []
+      inputValue = ""
+    } else {
+      optionsVisibility(true)
+    }
+  }
+
+  function handleOptionMousedown(e) {
+    const value = e.target.dataset.value
+    if (selected[value]) {
+      remove(value)
+    } else {
+      add(options.filter(o => o.value === value)[0])
+      input.focus()
+    }
+  }
+</script>
+
+<div>
+  {#if label}
+    <Label extraSmall grey>{label}</Label>
+  {/if}
+  <div class="multiselect" class:readonly>
+    <div class="tokens" class:showOptions on:click={handleTokenClick}>
+      {#each Object.values(selected) as s}
+        <div class="token" data-id={s.value}>
+          <span>{s.name}</span>
+          {#if !readonly}
+            <div class="token-remove" title="Remove {s.name}">
+              <svg
+                class="icon-clear"
+                xmlns="http://www.w3.org/2000/svg"
+                width="18"
+                height="18"
+                viewBox="0 0 24 24">
+                <path d={iconClearPath} />
+              </svg>
+            </div>
+          {/if}
+        </div>
+      {/each}
+      <div class="actions">
+        {#if !readonly}
+          <input
+            autocomplete="off"
+            bind:value={inputValue}
+            bind:this={input}
+            on:keyup={handleKeyup}
+            on:blur={handleBlur}
+            {placeholder} />
+          <div
+            class="remove-all"
+            title="Remove All"
+            class:hidden={!Object.keys(selected).length}>
+            <svg
+              class="icon-clear"
+              xmlns="http://www.w3.org/2000/svg"
+              width="18"
+              height="18"
+              viewBox="0 0 24 24">
+              <path d={iconClearPath} />
+            </svg>
+          </div>
+          <svg
+            class="dropdown-arrow"
+            xmlns="http://www.w3.org/2000/svg"
+            width="18"
+            height="18"
+            viewBox="0 0 18 18">
+            <path d="M5 8l4 4 4-4z" />
+          </svg>
+        {/if}
+      </div>
+    </div>
+
+    <select bind:this={slot} type="multiple" class="hidden">
+      <slot />
+    </select>
+
+    {#if showOptions}
+      <ul
+        class="options"
+        transition:fly={{ duration: 200, y: 5 }}
+        on:mousedown|preventDefault={handleOptionMousedown}>
+        {#each filtered as option}
+          <li
+            class:selected={selected[option.value]}
+            class:active={activeOption === option}
+            data-value={option.value}>
+            {option.name}
+          </li>
+        {/each}
+      </ul>
+    {/if}
+  </div>
+</div>
+
+<style>
+  .multiselect {
+    background-color: white;
+    border-bottom: 1px solid hsl(0, 0%, 70%);
+    position: relative;
+  }
+  .multiselect:not(.readonly):hover {
+    border-bottom-color: hsl(0, 0%, 50%);
+  }
+
+  .tokens {
+    align-items: center;
+    display: flex;
+    flex-wrap: wrap;
+    position: relative;
+  }
+  .tokens::after {
+    background: none repeat scroll 0 0 transparent;
+    bottom: -1px;
+    content: "";
+    display: block;
+    height: 2px;
+    left: 50%;
+    position: absolute;
+    background: hsl(45, 100%, 51%);
+    transition: width 0.3s ease 0s, left 0.3s ease 0s;
+    width: 0;
+  }
+  .tokens.showOptions::after {
+    width: 100%;
+    left: 0;
+  }
+  .token {
+    align-items: center;
+    background-color: hsl(214, 17%, 92%);
+    border-radius: 1.25rem;
+    display: flex;
+    margin: 0.25rem 0.5rem 0.25rem 0;
+    max-height: 1.3rem;
+    padding: 0.25rem 0.5rem 0.25rem 0.5rem;
+    transition: background-color 0.3s;
+    white-space: nowrap;
+  }
+  .token:hover {
+    background-color: hsl(214, 15%, 88%);
+  }
+  .readonly .token {
+    color: hsl(0, 0%, 40%);
+  }
+  .token-remove,
+  .remove-all {
+    align-items: center;
+    background-color: hsl(214, 15%, 55%);
+    border-radius: 50%;
+    color: hsl(214, 17%, 92%);
+    display: flex;
+    justify-content: center;
+    height: 1.25rem;
+    margin-left: 0.25rem;
+    min-width: 1.25rem;
+  }
+  .token-remove:hover,
+  .remove-all:hover {
+    background-color: hsl(215, 21%, 43%);
+    cursor: pointer;
+  }
+
+  .actions {
+    align-items: center;
+    display: flex;
+    flex: 1;
+    min-width: 15rem;
+  }
+
+  input {
+    border: none;
+    font-size: 1.5rem;
+    line-height: 1.5rem;
+    margin: 0;
+    outline: none;
+    padding: 0;
+    width: 100%;
+  }
+
+  .dropdown-arrow path {
+    fill: hsl(0, 0%, 70%);
+  }
+  .multiselect:hover .dropdown-arrow path {
+    fill: hsl(0, 0%, 50%);
+  }
+
+  .icon-clear path {
+    fill: white;
+  }
+
+  .options {
+    box-shadow: 0px 2px 4px rgba(0, 0, 0, 0.1), 0px -2px 4px rgba(0, 0, 0, 0.1);
+    left: 0;
+    list-style: none;
+    margin-block-end: 0;
+    margin-block-start: 0;
+    max-height: 70vh;
+    overflow: auto;
+    padding-inline-start: 0;
+    position: absolute;
+    top: calc(100% + 1px);
+    width: 100%;
+  }
+  li {
+    background-color: white;
+    cursor: pointer;
+    padding: 0.5rem;
+  }
+  li:last-child {
+    border-bottom-left-radius: 0.2rem;
+    border-bottom-right-radius: 0.2rem;
+  }
+  li:not(.selected):hover {
+    background-color: hsl(214, 17%, 92%);
+  }
+  li.selected {
+    background-color: hsl(232, 54%, 41%);
+    color: white;
+  }
+  li.selected:nth-child(even) {
+    background-color: hsl(232, 50%, 45%);
+    color: white;
+  }
+  li.active {
+    background-color: hsl(214, 17%, 88%);
+  }
+  li.selected.active,
+  li.selected:hover {
+    background-color: hsl(232, 48%, 50%);
+  }
+
+  .hidden {
+    display: none;
+  }
+</style>