fix: options reset on add / remove

muxinc · Jul 28, 2023 · 285a1b0 · 285a1b0
1 parent 403df15
commit 285a1b0
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Showing 2 changed files with 43 additions and 8 deletions.
diff --git a/src/js/experimental/media-chrome-listbox.js b/src/js/experimental/media-chrome-listbox.js
@@ -92,7 +92,6 @@ class MediaChromeListbox extends globalThis.HTMLElement {
 
   #keysSoFar = '';
   #clearKeysTimeout = null;
-  #slot;
   #metaPressed = false;
 
   constructor(options = {}) {
@@ -137,7 +136,7 @@ class MediaChromeListbox extends globalThis.HTMLElement {
     return indicator;
   }
 
-  get #options() {
+  get options() {
     // First query the light dom children for any options.
 
     /** @type NodeListOf<HTMLOptionElement> */
@@ -152,15 +151,15 @@ class MediaChromeListbox extends globalThis.HTMLElement {
   }
 
   get selectedOptions() {
-    return this.#options.filter(el => el.selected);
+    return this.options.filter(el => el.selected);
   }
 
   get value() {
     return this.selectedOptions[0]?.value || this.selectedOptions[0]?.textContent;
   }
 
   set value(newValue) {
-    const option = this.#options.find(el => el.value === newValue || el.textContent === newValue);
+    const option = this.options.find(el => el.value === newValue || el.textContent === newValue);
 
     if (!option) return;
 
@@ -314,7 +313,7 @@ class MediaChromeListbox extends globalThis.HTMLElement {
     const oldSelectedOptions = [...this.selectedOptions];
 
     if (!this.hasAttribute('aria-multiselectable') || this.getAttribute('aria-multiselectable') !== 'true') {
-      this.#options.forEach(el => (el.selected = false));
+      this.options.forEach(el => (el.selected = false));
     }
 
     if (toggle) {
@@ -330,7 +329,7 @@ class MediaChromeListbox extends globalThis.HTMLElement {
 
   handleMovement(e) {
     const { key } = e;
-    const els = this.#options;
+    const els = this.options;
 
     let currentOption = this.#getOption(e);
     if (!currentOption) {
@@ -379,7 +378,7 @@ class MediaChromeListbox extends globalThis.HTMLElement {
 
     if (!option || option.hasAttribute('disabled')) return;
 
-    this.#options.forEach(el => el.setAttribute('tabindex', '-1'));
+    this.options.forEach(el => el.setAttribute('tabindex', '-1'));
     option.setAttribute('tabindex', '0');
 
     this.handleSelection(e, this.hasAttribute('aria-multiselectable') && this.getAttribute('aria-multiselectable') === 'true');
@@ -388,7 +387,7 @@ class MediaChromeListbox extends globalThis.HTMLElement {
   #searchOption(key) {
     this.#clearKeysOnDelay();
 
-    const els = this.#options;
+    const els = this.options;
     const activeIndex = els.findIndex(el => el.getAttribute('tabindex') === '0');
 
     // always accumulate the key

diff --git a/src/js/experimental/media-chrome-option.js b/src/js/experimental/media-chrome-option.js
@@ -64,6 +64,7 @@ class MediaChromeOption extends globalThis.HTMLElement {
 
   /** @see https://html.spec.whatwg.org/multipage/form-elements.html#concept-option-dirtiness */
   #dirty = false;
+  #ownerElement;
 
   constructor() {
     super();
@@ -126,15 +127,50 @@ class MediaChromeOption extends globalThis.HTMLElement {
     }
 
     this.setAttribute('role', 'option');
+
+    this.#ownerElement = closestOptionsContainer(this, this.parentNode);
+    this.#reset();
   }
 
   disconnectedCallback() {
     this.disable();
+
+    this.#reset();
+    this.#ownerElement = null;
+  }
+
+  #reset() {
+    const options = this.#ownerElement?.options;
+    if (!options) return;
+
+    const hasActiveOption = options.some(option => option.getAttribute('tabindex') === '0');
+    // If the user set an element as active, we should use that rather than assume a default.
+    if (hasActiveOption) return;
+
+    // Default to the aria-selected element if there isn't an active element already.
+    let selectedOption = options.find(option => option.getAttribute('aria-selected') === 'true');
+
+    // If there isn't an active element or a selected element, default to the first element.
+    if (!selectedOption) selectedOption = options[0];
+
+    selectedOption?.setAttribute('tabindex', '0');
+    selectedOption?.setAttribute('aria-selected', 'true');
   }
 
   handleClick() {}
 }
 
+function closestOptionsContainer(childNode, parentNode) {
+  if (!childNode) return null;
+
+  const { host } = childNode.getRootNode();
+  if (!parentNode && host) return closestOptionsContainer(childNode, host);
+
+  if (parentNode?.options) return parentNode;
+
+  return closestOptionsContainer(parentNode, parentNode?.parentNode);
+}
+
 if (!globalThis.customElements.get('media-chrome-option')) {
   globalThis.customElements.define('media-chrome-option', MediaChromeOption);
 }