From 8a52d175ab8fdc3418effe1bc9cb286accf8ab31 Mon Sep 17 00:00:00 2001
From: Daniel Leroux <daniel.leroux@siemens.com>
Date: Fri, 5 Aug 2022 13:20:19 +0200
Subject: [PATCH] fix(core/dropdown): migrate to shadowdom

---
 packages/core/component-doc.json              |  4 +-
 .../core/scss/v7/components/_dropdown.scss    |  8 +-
 .../src/components/dropdown/dropdown.scss     | 10 +++
 .../core/src/components/dropdown/dropdown.tsx | 73 ++++++++++++++-----
 packages/react-test-app/src/App.tsx           | 25 ++++++-
 5 files changed, 95 insertions(+), 25 deletions(-)

diff --git a/packages/core/component-doc.json b/packages/core/component-doc.json
index a3806fcd6e0..747e6bdb661 100644
--- a/packages/core/component-doc.json
+++ b/packages/core/component-doc.json
@@ -1,5 +1,5 @@
 {
-  "timestamp": "2022-08-05T07:16:39",
+  "timestamp": "2022-08-05T11:17:25",
   "compiler": {
     "name": "@stencil/core",
     "version": "2.15.2",
@@ -1415,7 +1415,7 @@
     },
     {
       "filePath": "./src/components/dropdown/dropdown.tsx",
-      "encapsulation": "scoped",
+      "encapsulation": "shadow",
       "tag": "cw-dropdown",
       "readme": "# cw-dropdown\n\n\n",
       "docs": "",
diff --git a/packages/core/scss/v7/components/_dropdown.scss b/packages/core/scss/v7/components/_dropdown.scss
index 53d4b14fe39..434bccd7be5 100755
--- a/packages/core/scss/v7/components/_dropdown.scss
+++ b/packages/core/scss/v7/components/_dropdown.scss
@@ -57,7 +57,8 @@
 .dropdown-menu {
   background-color: var(--theme-menu--background);
   @include text-default-single;
-  border: var(--theme-menu--border-thickness) solid var(--theme-menu--border--color);
+  border: var(--theme-menu--border-thickness) solid
+    var(--theme-menu--border--color);
   border-radius: var(--theme-menu--border-radius);
   max-width: 100vw;
   padding: $tiny-space 0;
@@ -97,6 +98,11 @@
   border: 1px solid transparent;
   color: var(--theme-menu-item--color);
 
+  &:focus {
+    background-color: var(--theme-menu-item--background);
+    color: var(--theme-menu-item--color);
+  }
+
   &:focus-visible {
     outline: none;
     background-color: var(--theme-menu-item--background);
diff --git a/packages/core/src/components/dropdown/dropdown.scss b/packages/core/src/components/dropdown/dropdown.scss
index b19352df78e..a7e4ac9ca6e 100644
--- a/packages/core/src/components/dropdown/dropdown.scss
+++ b/packages/core/src/components/dropdown/dropdown.scss
@@ -1,3 +1,13 @@
+@import '~bootstrap/scss/functions';
+@import './../../../scss/v7/common-variables';
+@import '~bootstrap/scss/variables';
+@import '~bootstrap/scss/mixins';
+@import '~bootstrap/scss/dropdown';
+
+@import './../../../scss/v7/mixins/fonts';
+@import './../../../scss/v7/mixins/text-truncation';
+@import './../../../scss/v7/components/dropdown';
+
 :host {
   min-width: 0px;
 }
diff --git a/packages/core/src/components/dropdown/dropdown.tsx b/packages/core/src/components/dropdown/dropdown.tsx
index c257c2902c1..8a5ce167d9a 100644
--- a/packages/core/src/components/dropdown/dropdown.tsx
+++ b/packages/core/src/components/dropdown/dropdown.tsx
@@ -1,13 +1,29 @@
 /*
  * COPYRIGHT (c) Siemens AG 2018-2022 ALL RIGHTS RESERVED.
  */
-import { createPopper, Instance as PopperInstance, Placement, PositioningStrategy } from '@popperjs/core';
-import { Component, Element, Event, EventEmitter, h, Host, Listen, Method, Prop, Watch } from '@stencil/core';
+import {
+  createPopper,
+  Instance as PopperInstance,
+  Placement,
+  PositioningStrategy,
+} from '@popperjs/core';
+import {
+  Component,
+  Element,
+  Event,
+  EventEmitter,
+  h,
+  Host,
+  Listen,
+  Method,
+  Prop,
+  Watch,
+} from '@stencil/core';
 
 @Component({
   tag: 'cw-dropdown',
   styleUrl: 'dropdown.scss',
-  scoped: true,
+  shadow: true,
 })
 export class Dropdown {
   @Element() hostElement!: HTMLCwDropdownElement;
@@ -110,27 +126,39 @@ export class Dropdown {
   @Watch('show')
   async changedShow(newShow: boolean) {
     if (newShow) {
-      this.anchorElement = this.anchor ? this.resolveElement(this.anchor) : this.resolveElement(this.trigger);
+      this.anchorElement = this.anchor
+        ? this.resolveElement(this.anchor)
+        : this.resolveElement(this.trigger);
 
       if (this.anchorElement) {
         this.popperInstance?.destroy();
-        this.popperInstance = createPopper(this.anchorElement, this.dropdownRef, {
-          placement: this.placement,
-          strategy: this.positioningStrategy,
-          onFirstUpdate: ({ elements }) => {
-            if (this.adjustDropdownWidthToReferenceWith || this.adjustDropdownWidthToReferenceWidth) {
-              const { popper, reference } = elements;
-              const width = reference.getBoundingClientRect().width;
-              popper.style.width = `${width}px`;
-            }
-          },
-        });
+        this.popperInstance = createPopper(
+          this.anchorElement,
+          this.dropdownRef,
+          {
+            placement: this.placement,
+            strategy: this.positioningStrategy,
+            onFirstUpdate: ({ elements }) => {
+              if (
+                this.adjustDropdownWidthToReferenceWith ||
+                this.adjustDropdownWidthToReferenceWidth
+              ) {
+                const { popper, reference } = elements;
+                const width = reference.getBoundingClientRect().width;
+                popper.style.width = `${width}px`;
+              }
+            },
+          }
+        );
       }
     }
   }
 
   @Watch('trigger')
-  changedTrigger(newTriggerValue: string | HTMLElement, oldTriggerValue: string | HTMLElement) {
+  changedTrigger(
+    newTriggerValue: string | HTMLElement,
+    oldTriggerValue: string | HTMLElement
+  ) {
     if (newTriggerValue) {
       this.registerListener(newTriggerValue);
     }
@@ -146,7 +174,12 @@ export class Dropdown {
   clickOutside(event: Event) {
     const target = event.target as HTMLElement;
 
-    if (this.show === false || this.closeBehavior === false || this.anchorElement === target || this.triggerElement === target) {
+    if (
+      this.show === false ||
+      this.closeBehavior === false ||
+      this.anchorElement === target ||
+      this.triggerElement === target
+    ) {
       return;
     }
 
@@ -196,10 +229,10 @@ export class Dropdown {
   render() {
     return (
       <Host
-        ref={ref => (this.dropdownRef = ref)}
+        ref={(ref) => (this.dropdownRef = ref)}
         class={{
           'dropdown-menu': true,
-          'show': this.show,
+          show: this.show,
         }}
         style={{
           margin: '0',
@@ -207,7 +240,7 @@ export class Dropdown {
         }}
       >
         <div style={{ display: 'contents' }}>
-          { this.header ? <div class="dropdown-header">{this.header}</div>: ''}
+          {this.header ? <div class="dropdown-header">{this.header}</div> : ''}
           <slot></slot>
         </div>
       </Host>
diff --git a/packages/react-test-app/src/App.tsx b/packages/react-test-app/src/App.tsx
index 837149a8dd5..af9807c4b0d 100644
--- a/packages/react-test-app/src/App.tsx
+++ b/packages/react-test-app/src/App.tsx
@@ -1,9 +1,30 @@
-import { CwIcon } from '@siemens/ix-react';
+import { CwDropdown, CwDropdownItem, CwIcon } from '@siemens/ix-react';
+import { useState } from 'react';
 
 function App() {
+  const [items] = useState(['Item 1', 'Abc 2', 'Blabla 3']);
+  const [filter, setFilter] = useState('');
+
   return (
     <div>
-      <CwIcon name="print" />
+      <CwIcon name="print" style={{ color: 'red' }} id="test" />
+      <CwDropdown trigger={'test'} closeBehavior="outside">
+        <input
+          onInput={(e) => setFilter((e.target as HTMLInputElement).value)}
+        />
+
+        {items
+          .filter((i) => {
+            if (!filter) {
+              return true;
+            }
+
+            return i.includes(filter);
+          })
+          .map((i) => (
+            <CwDropdownItem label={i} key={i} />
+          ))}
+      </CwDropdown>
     </div>
   );
 }