Merge pull request #133 from Conor-Mack/feature/list-selectitems-store-context

Using store passed through context to manage ListItems

packages/materialdesign-components/src/Checkbox/Checkbox.svelte

@@ -1,5 +1,5 @@
 <script>
-  import { onMount, onDestroy, getContext } from "svelte"
+  import { onMount, onDestroy } from "svelte"
   import Formfield from "../Common/Formfield.svelte"
   import { fieldStore } from "../Common/FormfieldStore.js"
   import ClassBuilder from "../ClassBuilder.js"
@@ -7,6 +7,8 @@
 
   export let onClick = item => {}
 
+  export let _bb
+
   export let id = ""
   export let label = ""
   export let disabled = false
@@ -16,15 +18,15 @@
 
   let instance = null
   let checkbox = null
-
-  let context = getContext("BBMD:input:context")
+  let context = _bb.getContext("BBMD:input:context")
 
   onMount(() => {
     if (!!checkbox) {
       instance = new MDCCheckbox(checkbox)
       instance.indeterminate = indeterminate
       if (context !== "list-item") {
-        let fieldStore = getContext("BBMD:field-element")
+        //TODO: Fix this connected to Formfield context issue
+        let fieldStore = _bb.getContext("BBMD:field-element")
         fieldStore.setInput(instance)
       }
     }

packages/materialdesign-components/src/Common/Formfield.svelte

@@ -3,13 +3,14 @@
   import ClassBuilder from "../ClassBuilder.js"
   import { fieldStore } from "./FormfieldStore.js"
   import { MDCFormField } from "@material/form-field"
-  import { onMount, onDestroy, setContext } from "svelte"
+  import { onMount, onDestroy } from "svelte"
 
   const cb = new ClassBuilder("form-field")
 
   let store
   const unsubscribe = fieldStore.subscribe(s => (store = s))
 
+  export let _bb
   export let id = ""
   export let label = ""
   export let alignEnd = false
@@ -23,7 +24,8 @@
 
   onMount(() => {
     if (!!formField) fieldStore.set(new MDCFormField(formField))
-    setContext("BBMD:field-element", fieldStore)
+    //TODO: Fix this, _bb is coming back undefined
+    // _bb.setContext("BBMD:field-element", fieldStore)
   })
 
   onDestroy(unsubscribe)

packages/materialdesign-components/src/Common/ItemStore.js

@@ -0,0 +1,54 @@
+import { writable } from "svelte/store";
+
+function createItemsStore(componentOnSelect) {
+    const { subscribe, set, update } = writable([]);
+
+    function addItem(item) {
+        update(items => {
+            return [...items, item]                  
+        })
+        if (componentOnSelect) {
+            componentOnSelect();            
+        }
+    }
+
+    function addSingleItem(item) {
+        set([item])
+        if (componentOnSelect) {
+            componentOnSelect();            
+        }
+    }
+
+    function removeItem(itemId) {
+        update(items => {
+            let index = getItemIdx(items, itemId)
+            items.splice(index, 1);
+            return items;
+        })
+        if (componentOnSelect) {
+            componentOnSelect();            
+        }
+    }
+
+    function clearItems() {
+        set([]);
+        if (componentOnSelect) {
+            componentOnSelect();            
+        }
+    }
+
+    function getItemIdx(items, itemId) {
+        return items.findIndex(i => i._id === itemId);
+    }
+
+    return {
+        subscribe,
+        addItem,
+        addSingleItem,
+        removeItem,
+        clearItems,
+        getItemIdx
+    }
+}
+
+export default createItemsStore

packages/materialdesign-components/src/List/List.svelte

@@ -1,10 +1,13 @@
 <script>
-  import { onMount, getContext } from "svelte"
+  import { onMount, getContext, setContext } from "svelte"
   import { MDCList } from "@material/list"
+  import createItemsStore from "../Common/ItemStore.js"
   import { MDCRipple } from "@material/ripple"
   import ListItem from "./ListItem.svelte"
   import ClassBuilder from "../ClassBuilder.js"
 
+  let selectedItems
+
   export let _bb
   const cb = new ClassBuilder("list", ["one-line"])
 
@@ -13,20 +16,39 @@
 
   export let onSelect = selectedItems => {}
 
-  export let variant = "one-line"
-  //items: [{text: string | {primary: string, secondary: string}, value: any, selected: bool}...n]
-  export let items = []
   export let singleSelection = false
+  export let variant = "two-line"
   export let inputElement = null
 
+  let selectedItemsStore
+
   let role = "listbox"
 
+  function createOrAcceptItemStore() {
+    let store = _bb.getContext("BBMD:list:selectItemStore")
+    if (!!store) {
+      selectedItemsStore = store
+    } else {
+      selectedItemsStore = createItemsStore(() => onSelect($selectedItemsStore))
+      _bb.setContext("BBMD:list:selectItemStore", selectedItemsStore)
+    }
+  }
+
   onMount(() => {
+    createOrAcceptItemStore()
+
+    _bb.setContext("BBMD:list:props", {
+      inputElement,
+      variant,
+      singleSelection,
+    })
     if (!!list) {
+      if (!inputElement) {
         instance = new MDCList(list)
         instance.singleSelection = singleSelection
         instance.listElements.map(element => new MDCRipple(element))
       }
+    }
 
     let context = getContext("BBMD:list:context")
     if (context === "menu") {
@@ -39,28 +61,6 @@
     }
   })
 
-  function handleSelectedItem(item) {
-    if (!item.disabled) {
-      if (singleSelection || inputElement === "radiobutton") {
-        items.forEach(i => {
-          if (i.selected) i.selected = false
-        })
-      }
-
-      let idx = items.indexOf(item)
-      if (!!item.selected) {
-        items[idx].selected = !item.selected
-      } else {
-        items[idx].selected = true
-      }
-      onSelect(items.filter(item => item.selected))
-    }
-  }
-
-  $: useDoubleLine =
-    variant == "two-line" &&
-    items.every(i => typeof i.text == "object" && "primary" in i.text)
-
   $: list && _bb.attachChildren(list)
 
   $: modifiers = { variant }

packages/materialdesign-components/src/List/ListItem.svelte

@@ -3,15 +3,23 @@
   import { Radiobutton } from "../Radiobutton"
   import { Checkbox } from "../Checkbox"
   import ClassBuilder from "../ClassBuilder.js"
+  import shortid from "shortid"
 
   const cb = new ClassBuilder("list-item")
 
   export let onClick = item => {}
 
+  let _id
+  let listProps = null
+
+  let selectedItems
+
+  export let _bb
+
+  export let value = null
   export let text = ""
   export let secondaryText = ""
-  export let variant = "two-line"
-  export let inputElement = null
+
   export let leadingIcon = ""
   export let trailingIcon = ""
   export let selected = false
@@ -20,32 +28,63 @@
   let role = "option"
 
   onMount(() => {
-    let context = getContext("BBMD:list:context")
+    _id = shortid.generate()
+
+    selectedItems = _bb.getContext("BBMD:list:selectItemStore")
+
+    listProps = _bb.getContext("BBMD:list:props")
+
+    let context = _bb.getContext("BBMD:list:context")
     if (context === "menu") {
       role = "menuitem"
     }
   })
 
-  $: if (!!inputElement) {
-    setContext("BBMD:input:context", "list-item")
+  function handleClick() {
+    let item = {
+      _id,
+      value,
+      text,
+      secondaryText,
+      selected,
+      disabled,
+    }
+    if (!disabled) {
+      if (
+        listProps.singleSelection ||
+        listProps.inputElement === "radiobutton"
+      ) {
+        selectedItems.addSingleItem(item)
+      } else {
+        let idx = selectedItems.getItemIdx($selectedItems, _id)
+        if (idx > -1) {
+          selectedItems.removeItem(_id)
+        } else {
+          selectedItems.addItem(item)
+        }
+      }
+    }
   }
 
+  $: if (listProps && !!listProps.inputElement) {
+    _bb.setContext("BBMD:input:context", "list-item")
+  }
+
+  $: isSelected =
+    $selectedItems && selectedItems.getItemIdx($selectedItems, _id) > -1
+
   $: modifiers = {
-    selected,
+    selected: isSelected && (!listProps || !listProps.inputElement),
     disabled,
   }
   $: props = { modifiers }
   $: listItemClass = cb.build({ props })
 
-  $: useTwoLine = variant === "two-line" && !!secondaryText
+  $: useTwoLine =
+    listProps && listProps.variant === "two-line" && !!secondaryText
 </script>
 
-<li
-  class={listItemClass}
-  role="option"
-  aria-selected={selected}
-  tabindex="0"
-  on:click={onClick}>
+<li class={listItemClass} role="option" tabindex="0" on:click={handleClick}>
   {#if leadingIcon}
     <span class="mdc-list-item__graphic material-icons" aria-hidden="true">
       {leadingIcon}
@@ -58,11 +97,11 @@
     {:else}{text}{/if}
   </span>
 
-  {#if inputElement}
-    {#if inputElement === 'radiobutton'}
-      <Radiobutton checked={selected} {disabled} />
-    {:else if inputElement === 'checkbox'}
-      <Checkbox checked={selected} {disabled} />
+  {#if listProps}
+    {#if listProps.inputElement === 'radiobutton'}
+      <Radiobutton checked={isSelected} {disabled} {_bb} />
+    {:else if listProps.inputElement === 'checkbox'}
+      <Checkbox checked={isSelected} {disabled} {_bb} />
     {/if}
   {:else if trailingIcon}
     <!-- TODO: Adapt label to accept class prop to handle this. Context is insufficient -->

packages/materialdesign-components/src/Radiobutton/Radiobutton.svelte

@@ -1,10 +1,11 @@
 <script>
-  import { onMount, onDestroy, getContext } from "svelte"
+  import { onMount, onDestroy } from "svelte"
   import Formfield from "../Common/Formfield.svelte"
   import ClassBuilder from "../ClassBuilder.js"
   import { MDCRadio } from "@material/radio"
 
   export let onClick = item => {}
+  export let _bb
 
   export let id = ""
   export let label = ""
@@ -16,13 +17,13 @@
   let instance = null
   let radiobtn = null
 
-  let context = getContext("BBMD:input:context")
+  let context = _bb.getContext("BBMD:input:context")
 
   onMount(() => {
     if (!!radiobtn) {
       instance = new MDCRadio(radiobtn)
       if (context !== "list-item") {
-        let fieldStore = getContext("BBMD:field-element")
+        let fieldStore = _bb.getContext("BBMD:field-element")
         fieldStore.setInput(instance)
       }
     }

packages/materialdesign-components/src/Test/TestApp.svelte

@@ -32,10 +32,6 @@
             Button,
             BodyBoundToStore,
             Textfield,
-            Checkbox,
-            Checkboxgroup,
-            Radiobutton,
-            Radiobuttongroup,
             Icon,
             Datatable,
             CustomersIndexTable,

packages/materialdesign-components/src/Test/props.js

@@ -117,12 +117,13 @@ export const props = {
   CustomersIndexTable: indexDatatable(templateOptions)[0].props,
   List: {
     _component: "@budibase/materialdesign-components/List",
+    variant: "two-line",
+    singleSelection: false,
+    onSelect: selected => console.log(selected),
     _children: [
       {
         _component: "@budibase/materialdesign-components/ListItem",
         _children: [],
-        variant: "two-line",
-        singleSelection: true,
         text: "Curry",
         secondaryText: "Chicken or Beef",
         value: 0,
@@ -131,8 +132,6 @@ export const props = {
       {
         _component: "@budibase/materialdesign-components/ListItem",
         _children: [],
-        variant: "two-line",
-        singleSelection: true,
         text: "Pastie",
         secondaryText: "Bap with Mayo",
         value: 1,
@@ -141,15 +140,10 @@ export const props = {
       {
         _component: "@budibase/materialdesign-components/ListItem",
         _children: [],
-        variant: "two-line",
-        singleSelection: true,
         text: "Fish",
         secondaryText: "Salmon or Cod",
         value: 2,
       },
-    ],
-    variant: "two-line",
-    singleSelection: true,
-    onSelect: selected => console.log(selected),
+    ]
   },
 }