numerus/web/static/numerus.js

772 lines
25 KiB
JavaScript
Raw Normal View History

Reimplement the multiselect as a custom element What i really set off on was to refactor the multiselect’s x-data context to a separate JavaScript file. I did not see the need at first, thinking that it would not matter because it was used only in a template and i was not duplicating the code in my files. However, i then realized that having the context in the template means the visitor has to download it each and every time it accesses a form with a multiselect, even if nothing changed, and, worse, it would download it multiple times if there were many multiselect controls. It makes more sense to put all that into a file that the browser would only download and parse once, if the proper caching is set. Once i realized that, it was a shame that AlpineJS has no way to do the same for the HTML structure[0], for the exact same reasons: not wanting to download many times the same extra <template> and other markup required to build the control for JavaScript users. And then i remembered that this is supposed to be custom element’s main selling point. At first i tried to create a shadow DOW to replace the <select> with the same <div> and <ul> that i used with Alpine, but it turns out that <select> is not one of the allowed elements that can have a shadow root attached[0]. Therefore, i changed the custom element to extend the <div> for the <select> and <label> instead—the same element that had the x-init context—, but i would have to define or include all the styles inside the shadow DOM, and bring the lang attribute, for it to look like it did before. Out with the shadow DOM, and modify the <div>’s contents instead. At this point the code was so far removed from the declarative way that AlpineJS promotes that i did not see much value on using it, except for its reactivity. But, given that this is such a small component, at the end decided to write it all in plain JavaScript. It is more code, at least looking only at the code i had to write, but i love how i only have to add an is="numerus-multiselect" attribute to HTML for it to work. [0]: https://github.com/alpinejs/alpine/discussions/1205 [1]: https://developer.mozilla.org/en-US/docs/Web/API/Element/attachShadow
2023-03-17 13:55:12 +00:00
class Multiselect extends HTMLDivElement {
constructor() {
super();
this.initialized = false;
this.toSearch = '';
this.highlighted = 0;
Reimplement the multiselect as a custom element What i really set off on was to refactor the multiselect’s x-data context to a separate JavaScript file. I did not see the need at first, thinking that it would not matter because it was used only in a template and i was not duplicating the code in my files. However, i then realized that having the context in the template means the visitor has to download it each and every time it accesses a form with a multiselect, even if nothing changed, and, worse, it would download it multiple times if there were many multiselect controls. It makes more sense to put all that into a file that the browser would only download and parse once, if the proper caching is set. Once i realized that, it was a shame that AlpineJS has no way to do the same for the HTML structure[0], for the exact same reasons: not wanting to download many times the same extra <template> and other markup required to build the control for JavaScript users. And then i remembered that this is supposed to be custom element’s main selling point. At first i tried to create a shadow DOW to replace the <select> with the same <div> and <ul> that i used with Alpine, but it turns out that <select> is not one of the allowed elements that can have a shadow root attached[0]. Therefore, i changed the custom element to extend the <div> for the <select> and <label> instead—the same element that had the x-init context—, but i would have to define or include all the styles inside the shadow DOM, and bring the lang attribute, for it to look like it did before. Out with the shadow DOM, and modify the <div>’s contents instead. At this point the code was so far removed from the declarative way that AlpineJS promotes that i did not see much value on using it, except for its reactivity. But, given that this is such a small component, at the end decided to write it all in plain JavaScript. It is more code, at least looking only at the code i had to write, but i love how i only have to add an is="numerus-multiselect" attribute to HTML for it to work. [0]: https://github.com/alpinejs/alpine/discussions/1205 [1]: https://developer.mozilla.org/en-US/docs/Web/API/Element/attachShadow
2023-03-17 13:55:12 +00:00
}
connectedCallback() {
if (!this.isConnected) {
return;
}
Reimplement the multiselect as a custom element What i really set off on was to refactor the multiselect’s x-data context to a separate JavaScript file. I did not see the need at first, thinking that it would not matter because it was used only in a template and i was not duplicating the code in my files. However, i then realized that having the context in the template means the visitor has to download it each and every time it accesses a form with a multiselect, even if nothing changed, and, worse, it would download it multiple times if there were many multiselect controls. It makes more sense to put all that into a file that the browser would only download and parse once, if the proper caching is set. Once i realized that, it was a shame that AlpineJS has no way to do the same for the HTML structure[0], for the exact same reasons: not wanting to download many times the same extra <template> and other markup required to build the control for JavaScript users. And then i remembered that this is supposed to be custom element’s main selling point. At first i tried to create a shadow DOW to replace the <select> with the same <div> and <ul> that i used with Alpine, but it turns out that <select> is not one of the allowed elements that can have a shadow root attached[0]. Therefore, i changed the custom element to extend the <div> for the <select> and <label> instead—the same element that had the x-init context—, but i would have to define or include all the styles inside the shadow DOM, and bring the lang attribute, for it to look like it did before. Out with the shadow DOM, and modify the <div>’s contents instead. At this point the code was so far removed from the declarative way that AlpineJS promotes that i did not see much value on using it, except for its reactivity. But, given that this is such a small component, at the end decided to write it all in plain JavaScript. It is more code, at least looking only at the code i had to write, but i love how i only have to add an is="numerus-multiselect" attribute to HTML for it to work. [0]: https://github.com/alpinejs/alpine/discussions/1205 [1]: https://developer.mozilla.org/en-US/docs/Web/API/Element/attachShadow
2023-03-17 13:55:12 +00:00
if (!this.initialized) {
for (const child of this.children) {
switch (child.nodeName) {
case 'SELECT':
this.select = child;
break;
case 'LABEL':
this.label = child;
break;
}
}
if (this.label && this.select) {
this.init();
}
}
if (this.initialized) {
this.onClickHandler = () => this.toggle();
this.tags.addEventListener('click', this.onClickHandler);
this.onSearchInputHandler = (e) => {
this.open();
this.filter(e.target.value);
}
this.onSearchKeydownHandler = (e) => {
switch (e.code) {
case "Enter":
e.preventDefault();
this.selectHighlighted();
break;
case "ArrowDown":
if (e.altKey) {
this.open();
} else {
e.preventDefault();
this.highlightNext();
}
break;
case "ArrowUp":
if (e.altKey) {
this.close();
} else {
e.preventDefault();
this.highlightPrev();
}
break;
case "Backspace":
if (e.target.value === '') {
this.deselectLast();
}
break;
case "Escape":
this.close();
break;
}
};
this.search.addEventListener('input', this.onSearchInputHandler);
this.search.addEventListener('keydown', this.onSearchKeydownHandler);
this.onFocusOutHandler = (e) => {
if (this.contains(e.target)) return;
if (!e.target.isConnected) return;
this.close();
}
window.addEventListener('focusin', this.onFocusOutHandler);
document.addEventListener('click', this.onFocusOutHandler);
this.rebuild()
}
}
disconnectedCallback() {
if (this.initialized) {
this.removeTags();
this.options.innerHTML = '';
document.removeEventListener('click', this.onFocusOutHandler);
window.removeEventListener('focusin', this.onFocusOutHandler);
this.onFocusOutHandler = null;
this.search.removeEventListener('keydown', this.onSearchKeydownHandler);
this.search.removeEventListener('input', this.onSearchInputHandler);
this.onSearchInputHandler = null;
this.onSearchKeydownHandler = null;
this.tags.removeEventListener('click', this.onClickHandler);
this.onClickHandler = null;
}
Reimplement the multiselect as a custom element What i really set off on was to refactor the multiselect’s x-data context to a separate JavaScript file. I did not see the need at first, thinking that it would not matter because it was used only in a template and i was not duplicating the code in my files. However, i then realized that having the context in the template means the visitor has to download it each and every time it accesses a form with a multiselect, even if nothing changed, and, worse, it would download it multiple times if there were many multiselect controls. It makes more sense to put all that into a file that the browser would only download and parse once, if the proper caching is set. Once i realized that, it was a shame that AlpineJS has no way to do the same for the HTML structure[0], for the exact same reasons: not wanting to download many times the same extra <template> and other markup required to build the control for JavaScript users. And then i remembered that this is supposed to be custom element’s main selling point. At first i tried to create a shadow DOW to replace the <select> with the same <div> and <ul> that i used with Alpine, but it turns out that <select> is not one of the allowed elements that can have a shadow root attached[0]. Therefore, i changed the custom element to extend the <div> for the <select> and <label> instead—the same element that had the x-init context—, but i would have to define or include all the styles inside the shadow DOM, and bring the lang attribute, for it to look like it did before. Out with the shadow DOM, and modify the <div>’s contents instead. At this point the code was so far removed from the declarative way that AlpineJS promotes that i did not see much value on using it, except for its reactivity. But, given that this is such a small component, at the end decided to write it all in plain JavaScript. It is more code, at least looking only at the code i had to write, but i love how i only have to add an is="numerus-multiselect" attribute to HTML for it to work. [0]: https://github.com/alpinejs/alpine/discussions/1205 [1]: https://developer.mozilla.org/en-US/docs/Web/API/Element/attachShadow
2023-03-17 13:55:12 +00:00
}
init() {
this.initialized = true;
this.select.style.display = 'none';
for (const option of this.select.options) {
option.dataset.numerusSearch = Multiselect.normalize(option.textContent);
}
this.tags = document.createElement('div');
this.append(this.tags);
this.tags.classList.add('tags');
this.search = document.createElement('input');
this.tags.append(this.search);
this.search.id = this.select.id;
this.select.removeAttribute('id');
this.select.setAttribute('aria-hidden', 'true');
this.search.setAttribute('spellcheck', 'false');
this.search.setAttribute('autocomplete', 'false');
this.search.setAttribute('role', 'combobox');
Reimplement the multiselect as a custom element What i really set off on was to refactor the multiselect’s x-data context to a separate JavaScript file. I did not see the need at first, thinking that it would not matter because it was used only in a template and i was not duplicating the code in my files. However, i then realized that having the context in the template means the visitor has to download it each and every time it accesses a form with a multiselect, even if nothing changed, and, worse, it would download it multiple times if there were many multiselect controls. It makes more sense to put all that into a file that the browser would only download and parse once, if the proper caching is set. Once i realized that, it was a shame that AlpineJS has no way to do the same for the HTML structure[0], for the exact same reasons: not wanting to download many times the same extra <template> and other markup required to build the control for JavaScript users. And then i remembered that this is supposed to be custom element’s main selling point. At first i tried to create a shadow DOW to replace the <select> with the same <div> and <ul> that i used with Alpine, but it turns out that <select> is not one of the allowed elements that can have a shadow root attached[0]. Therefore, i changed the custom element to extend the <div> for the <select> and <label> instead—the same element that had the x-init context—, but i would have to define or include all the styles inside the shadow DOM, and bring the lang attribute, for it to look like it did before. Out with the shadow DOM, and modify the <div>’s contents instead. At this point the code was so far removed from the declarative way that AlpineJS promotes that i did not see much value on using it, except for its reactivity. But, given that this is such a small component, at the end decided to write it all in plain JavaScript. It is more code, at least looking only at the code i had to write, but i love how i only have to add an is="numerus-multiselect" attribute to HTML for it to work. [0]: https://github.com/alpinejs/alpine/discussions/1205 [1]: https://developer.mozilla.org/en-US/docs/Web/API/Element/attachShadow
2023-03-17 13:55:12 +00:00
// Must come after the search input
this.tags.append(this.label);
this.options = document.createElement('ul');
this.append(this.options);
this.options.id = this.search.id + '-options-' + Array.from(crypto.getRandomValues(new Uint8Array(4))).map(n => n.toString(16)).join('');
this.search.setAttribute('aria-controls', this.options.id);
Reimplement the multiselect as a custom element What i really set off on was to refactor the multiselect’s x-data context to a separate JavaScript file. I did not see the need at first, thinking that it would not matter because it was used only in a template and i was not duplicating the code in my files. However, i then realized that having the context in the template means the visitor has to download it each and every time it accesses a form with a multiselect, even if nothing changed, and, worse, it would download it multiple times if there were many multiselect controls. It makes more sense to put all that into a file that the browser would only download and parse once, if the proper caching is set. Once i realized that, it was a shame that AlpineJS has no way to do the same for the HTML structure[0], for the exact same reasons: not wanting to download many times the same extra <template> and other markup required to build the control for JavaScript users. And then i remembered that this is supposed to be custom element’s main selling point. At first i tried to create a shadow DOW to replace the <select> with the same <div> and <ul> that i used with Alpine, but it turns out that <select> is not one of the allowed elements that can have a shadow root attached[0]. Therefore, i changed the custom element to extend the <div> for the <select> and <label> instead—the same element that had the x-init context—, but i would have to define or include all the styles inside the shadow DOM, and bring the lang attribute, for it to look like it did before. Out with the shadow DOM, and modify the <div>’s contents instead. At this point the code was so far removed from the declarative way that AlpineJS promotes that i did not see much value on using it, except for its reactivity. But, given that this is such a small component, at the end decided to write it all in plain JavaScript. It is more code, at least looking only at the code i had to write, but i love how i only have to add an is="numerus-multiselect" attribute to HTML for it to work. [0]: https://github.com/alpinejs/alpine/discussions/1205 [1]: https://developer.mozilla.org/en-US/docs/Web/API/Element/attachShadow
2023-03-17 13:55:12 +00:00
this.options.classList.add('options');
this.options.setAttribute('role', 'listbox');
Reimplement the multiselect as a custom element What i really set off on was to refactor the multiselect’s x-data context to a separate JavaScript file. I did not see the need at first, thinking that it would not matter because it was used only in a template and i was not duplicating the code in my files. However, i then realized that having the context in the template means the visitor has to download it each and every time it accesses a form with a multiselect, even if nothing changed, and, worse, it would download it multiple times if there were many multiselect controls. It makes more sense to put all that into a file that the browser would only download and parse once, if the proper caching is set. Once i realized that, it was a shame that AlpineJS has no way to do the same for the HTML structure[0], for the exact same reasons: not wanting to download many times the same extra <template> and other markup required to build the control for JavaScript users. And then i remembered that this is supposed to be custom element’s main selling point. At first i tried to create a shadow DOW to replace the <select> with the same <div> and <ul> that i used with Alpine, but it turns out that <select> is not one of the allowed elements that can have a shadow root attached[0]. Therefore, i changed the custom element to extend the <div> for the <select> and <label> instead—the same element that had the x-init context—, but i would have to define or include all the styles inside the shadow DOM, and bring the lang attribute, for it to look like it did before. Out with the shadow DOM, and modify the <div>’s contents instead. At this point the code was so far removed from the declarative way that AlpineJS promotes that i did not see much value on using it, except for its reactivity. But, given that this is such a small component, at the end decided to write it all in plain JavaScript. It is more code, at least looking only at the code i had to write, but i love how i only have to add an is="numerus-multiselect" attribute to HTML for it to work. [0]: https://github.com/alpinejs/alpine/discussions/1205 [1]: https://developer.mozilla.org/en-US/docs/Web/API/Element/attachShadow
2023-03-17 13:55:12 +00:00
this.close();
}
rebuildOptions() {
this.options.innerHTML = '';
let highlight = true;
Reimplement the multiselect as a custom element What i really set off on was to refactor the multiselect’s x-data context to a separate JavaScript file. I did not see the need at first, thinking that it would not matter because it was used only in a template and i was not duplicating the code in my files. However, i then realized that having the context in the template means the visitor has to download it each and every time it accesses a form with a multiselect, even if nothing changed, and, worse, it would download it multiple times if there were many multiselect controls. It makes more sense to put all that into a file that the browser would only download and parse once, if the proper caching is set. Once i realized that, it was a shame that AlpineJS has no way to do the same for the HTML structure[0], for the exact same reasons: not wanting to download many times the same extra <template> and other markup required to build the control for JavaScript users. And then i remembered that this is supposed to be custom element’s main selling point. At first i tried to create a shadow DOW to replace the <select> with the same <div> and <ul> that i used with Alpine, but it turns out that <select> is not one of the allowed elements that can have a shadow root attached[0]. Therefore, i changed the custom element to extend the <div> for the <select> and <label> instead—the same element that had the x-init context—, but i would have to define or include all the styles inside the shadow DOM, and bring the lang attribute, for it to look like it did before. Out with the shadow DOM, and modify the <div>’s contents instead. At this point the code was so far removed from the declarative way that AlpineJS promotes that i did not see much value on using it, except for its reactivity. But, given that this is such a small component, at the end decided to write it all in plain JavaScript. It is more code, at least looking only at the code i had to write, but i love how i only have to add an is="numerus-multiselect" attribute to HTML for it to work. [0]: https://github.com/alpinejs/alpine/discussions/1205 [1]: https://developer.mozilla.org/en-US/docs/Web/API/Element/attachShadow
2023-03-17 13:55:12 +00:00
for (const option of this.select.options) {
if (!this.isOptionSelectable(option)) {
continue;
}
const li = document.createElement('li');
this.options.append(li);
li.id = this.options.id + '-' + option.index;
li.dataset.index = option.index;
Reimplement the multiselect as a custom element What i really set off on was to refactor the multiselect’s x-data context to a separate JavaScript file. I did not see the need at first, thinking that it would not matter because it was used only in a template and i was not duplicating the code in my files. However, i then realized that having the context in the template means the visitor has to download it each and every time it accesses a form with a multiselect, even if nothing changed, and, worse, it would download it multiple times if there were many multiselect controls. It makes more sense to put all that into a file that the browser would only download and parse once, if the proper caching is set. Once i realized that, it was a shame that AlpineJS has no way to do the same for the HTML structure[0], for the exact same reasons: not wanting to download many times the same extra <template> and other markup required to build the control for JavaScript users. And then i remembered that this is supposed to be custom element’s main selling point. At first i tried to create a shadow DOW to replace the <select> with the same <div> and <ul> that i used with Alpine, but it turns out that <select> is not one of the allowed elements that can have a shadow root attached[0]. Therefore, i changed the custom element to extend the <div> for the <select> and <label> instead—the same element that had the x-init context—, but i would have to define or include all the styles inside the shadow DOM, and bring the lang attribute, for it to look like it did before. Out with the shadow DOM, and modify the <div>’s contents instead. At this point the code was so far removed from the declarative way that AlpineJS promotes that i did not see much value on using it, except for its reactivity. But, given that this is such a small component, at the end decided to write it all in plain JavaScript. It is more code, at least looking only at the code i had to write, but i love how i only have to add an is="numerus-multiselect" attribute to HTML for it to work. [0]: https://github.com/alpinejs/alpine/discussions/1205 [1]: https://developer.mozilla.org/en-US/docs/Web/API/Element/attachShadow
2023-03-17 13:55:12 +00:00
li.textContent = option.textContent;
li.addEventListener('click', () => this.selectOption(option, true));
if (highlight && (option.index >= this.highlighted)) {
highlight = false;
this.highlight(null, li);
}
}
if (highlight) {
this.highlight(null, this.options.querySelector('li:last-child'));
}
}
highlightNext() {
const current = this.currentHighlighted();
if (!current) {
return;
}
this.highlight(current, current.nextElementSibling);
}
highlightPrev() {
const current = this.currentHighlighted();
if (!current) {
return;
Reimplement the multiselect as a custom element What i really set off on was to refactor the multiselect’s x-data context to a separate JavaScript file. I did not see the need at first, thinking that it would not matter because it was used only in a template and i was not duplicating the code in my files. However, i then realized that having the context in the template means the visitor has to download it each and every time it accesses a form with a multiselect, even if nothing changed, and, worse, it would download it multiple times if there were many multiselect controls. It makes more sense to put all that into a file that the browser would only download and parse once, if the proper caching is set. Once i realized that, it was a shame that AlpineJS has no way to do the same for the HTML structure[0], for the exact same reasons: not wanting to download many times the same extra <template> and other markup required to build the control for JavaScript users. And then i remembered that this is supposed to be custom element’s main selling point. At first i tried to create a shadow DOW to replace the <select> with the same <div> and <ul> that i used with Alpine, but it turns out that <select> is not one of the allowed elements that can have a shadow root attached[0]. Therefore, i changed the custom element to extend the <div> for the <select> and <label> instead—the same element that had the x-init context—, but i would have to define or include all the styles inside the shadow DOM, and bring the lang attribute, for it to look like it did before. Out with the shadow DOM, and modify the <div>’s contents instead. At this point the code was so far removed from the declarative way that AlpineJS promotes that i did not see much value on using it, except for its reactivity. But, given that this is such a small component, at the end decided to write it all in plain JavaScript. It is more code, at least looking only at the code i had to write, but i love how i only have to add an is="numerus-multiselect" attribute to HTML for it to work. [0]: https://github.com/alpinejs/alpine/discussions/1205 [1]: https://developer.mozilla.org/en-US/docs/Web/API/Element/attachShadow
2023-03-17 13:55:12 +00:00
}
this.highlight(current, current.previousElementSibling);
}
highlight(current, upcoming) {
if (!upcoming) {
return;
}
if (current) {
current.classList.remove('highlight');
}
upcoming.classList.remove('highlight');
this.search.setAttribute('aria-activedescendant', upcoming.id);
this.highlighted = upcoming.dataset.index;
upcoming.classList.add('highlight');
}
currentHighlighted() {
return document.getElementById(this.search.getAttribute('aria-activedescendant'));
Reimplement the multiselect as a custom element What i really set off on was to refactor the multiselect’s x-data context to a separate JavaScript file. I did not see the need at first, thinking that it would not matter because it was used only in a template and i was not duplicating the code in my files. However, i then realized that having the context in the template means the visitor has to download it each and every time it accesses a form with a multiselect, even if nothing changed, and, worse, it would download it multiple times if there were many multiselect controls. It makes more sense to put all that into a file that the browser would only download and parse once, if the proper caching is set. Once i realized that, it was a shame that AlpineJS has no way to do the same for the HTML structure[0], for the exact same reasons: not wanting to download many times the same extra <template> and other markup required to build the control for JavaScript users. And then i remembered that this is supposed to be custom element’s main selling point. At first i tried to create a shadow DOW to replace the <select> with the same <div> and <ul> that i used with Alpine, but it turns out that <select> is not one of the allowed elements that can have a shadow root attached[0]. Therefore, i changed the custom element to extend the <div> for the <select> and <label> instead—the same element that had the x-init context—, but i would have to define or include all the styles inside the shadow DOM, and bring the lang attribute, for it to look like it did before. Out with the shadow DOM, and modify the <div>’s contents instead. At this point the code was so far removed from the declarative way that AlpineJS promotes that i did not see much value on using it, except for its reactivity. But, given that this is such a small component, at the end decided to write it all in plain JavaScript. It is more code, at least looking only at the code i had to write, but i love how i only have to add an is="numerus-multiselect" attribute to HTML for it to work. [0]: https://github.com/alpinejs/alpine/discussions/1205 [1]: https://developer.mozilla.org/en-US/docs/Web/API/Element/attachShadow
2023-03-17 13:55:12 +00:00
}
isOptionSelectable(option) {
if (!option) {
return false;
}
Reimplement the multiselect as a custom element What i really set off on was to refactor the multiselect’s x-data context to a separate JavaScript file. I did not see the need at first, thinking that it would not matter because it was used only in a template and i was not duplicating the code in my files. However, i then realized that having the context in the template means the visitor has to download it each and every time it accesses a form with a multiselect, even if nothing changed, and, worse, it would download it multiple times if there were many multiselect controls. It makes more sense to put all that into a file that the browser would only download and parse once, if the proper caching is set. Once i realized that, it was a shame that AlpineJS has no way to do the same for the HTML structure[0], for the exact same reasons: not wanting to download many times the same extra <template> and other markup required to build the control for JavaScript users. And then i remembered that this is supposed to be custom element’s main selling point. At first i tried to create a shadow DOW to replace the <select> with the same <div> and <ul> that i used with Alpine, but it turns out that <select> is not one of the allowed elements that can have a shadow root attached[0]. Therefore, i changed the custom element to extend the <div> for the <select> and <label> instead—the same element that had the x-init context—, but i would have to define or include all the styles inside the shadow DOM, and bring the lang attribute, for it to look like it did before. Out with the shadow DOM, and modify the <div>’s contents instead. At this point the code was so far removed from the declarative way that AlpineJS promotes that i did not see much value on using it, except for its reactivity. But, given that this is such a small component, at the end decided to write it all in plain JavaScript. It is more code, at least looking only at the code i had to write, but i love how i only have to add an is="numerus-multiselect" attribute to HTML for it to work. [0]: https://github.com/alpinejs/alpine/discussions/1205 [1]: https://developer.mozilla.org/en-US/docs/Web/API/Element/attachShadow
2023-03-17 13:55:12 +00:00
if (option.selected) {
return false;
}
return this.toSearch === '' || option.dataset.numerusSearch.includes(this.toSearch);
}
selectOption(option, selected) {
if (!option) {
return;
}
if (option.selected !== selected) {
option.selected = selected;
this.select.dispatchEvent(new Event('change', {bubbles: true}));
this.toSearch = this.search.value = '';
this.rebuild();
}
Reimplement the multiselect as a custom element What i really set off on was to refactor the multiselect’s x-data context to a separate JavaScript file. I did not see the need at first, thinking that it would not matter because it was used only in a template and i was not duplicating the code in my files. However, i then realized that having the context in the template means the visitor has to download it each and every time it accesses a form with a multiselect, even if nothing changed, and, worse, it would download it multiple times if there were many multiselect controls. It makes more sense to put all that into a file that the browser would only download and parse once, if the proper caching is set. Once i realized that, it was a shame that AlpineJS has no way to do the same for the HTML structure[0], for the exact same reasons: not wanting to download many times the same extra <template> and other markup required to build the control for JavaScript users. And then i remembered that this is supposed to be custom element’s main selling point. At first i tried to create a shadow DOW to replace the <select> with the same <div> and <ul> that i used with Alpine, but it turns out that <select> is not one of the allowed elements that can have a shadow root attached[0]. Therefore, i changed the custom element to extend the <div> for the <select> and <label> instead—the same element that had the x-init context—, but i would have to define or include all the styles inside the shadow DOM, and bring the lang attribute, for it to look like it did before. Out with the shadow DOM, and modify the <div>’s contents instead. At this point the code was so far removed from the declarative way that AlpineJS promotes that i did not see much value on using it, except for its reactivity. But, given that this is such a small component, at the end decided to write it all in plain JavaScript. It is more code, at least looking only at the code i had to write, but i love how i only have to add an is="numerus-multiselect" attribute to HTML for it to work. [0]: https://github.com/alpinejs/alpine/discussions/1205 [1]: https://developer.mozilla.org/en-US/docs/Web/API/Element/attachShadow
2023-03-17 13:55:12 +00:00
}
selectHighlighted() {
Reimplement the multiselect as a custom element What i really set off on was to refactor the multiselect’s x-data context to a separate JavaScript file. I did not see the need at first, thinking that it would not matter because it was used only in a template and i was not duplicating the code in my files. However, i then realized that having the context in the template means the visitor has to download it each and every time it accesses a form with a multiselect, even if nothing changed, and, worse, it would download it multiple times if there were many multiselect controls. It makes more sense to put all that into a file that the browser would only download and parse once, if the proper caching is set. Once i realized that, it was a shame that AlpineJS has no way to do the same for the HTML structure[0], for the exact same reasons: not wanting to download many times the same extra <template> and other markup required to build the control for JavaScript users. And then i remembered that this is supposed to be custom element’s main selling point. At first i tried to create a shadow DOW to replace the <select> with the same <div> and <ul> that i used with Alpine, but it turns out that <select> is not one of the allowed elements that can have a shadow root attached[0]. Therefore, i changed the custom element to extend the <div> for the <select> and <label> instead—the same element that had the x-init context—, but i would have to define or include all the styles inside the shadow DOM, and bring the lang attribute, for it to look like it did before. Out with the shadow DOM, and modify the <div>’s contents instead. At this point the code was so far removed from the declarative way that AlpineJS promotes that i did not see much value on using it, except for its reactivity. But, given that this is such a small component, at the end decided to write it all in plain JavaScript. It is more code, at least looking only at the code i had to write, but i love how i only have to add an is="numerus-multiselect" attribute to HTML for it to work. [0]: https://github.com/alpinejs/alpine/discussions/1205 [1]: https://developer.mozilla.org/en-US/docs/Web/API/Element/attachShadow
2023-03-17 13:55:12 +00:00
if (!this.isOpen()) {
return;
}
const option = this.select.options[this.highlighted];
if (this.isOptionSelectable(option)) {
this.selectOption(option, true);
Reimplement the multiselect as a custom element What i really set off on was to refactor the multiselect’s x-data context to a separate JavaScript file. I did not see the need at first, thinking that it would not matter because it was used only in a template and i was not duplicating the code in my files. However, i then realized that having the context in the template means the visitor has to download it each and every time it accesses a form with a multiselect, even if nothing changed, and, worse, it would download it multiple times if there were many multiselect controls. It makes more sense to put all that into a file that the browser would only download and parse once, if the proper caching is set. Once i realized that, it was a shame that AlpineJS has no way to do the same for the HTML structure[0], for the exact same reasons: not wanting to download many times the same extra <template> and other markup required to build the control for JavaScript users. And then i remembered that this is supposed to be custom element’s main selling point. At first i tried to create a shadow DOW to replace the <select> with the same <div> and <ul> that i used with Alpine, but it turns out that <select> is not one of the allowed elements that can have a shadow root attached[0]. Therefore, i changed the custom element to extend the <div> for the <select> and <label> instead—the same element that had the x-init context—, but i would have to define or include all the styles inside the shadow DOM, and bring the lang attribute, for it to look like it did before. Out with the shadow DOM, and modify the <div>’s contents instead. At this point the code was so far removed from the declarative way that AlpineJS promotes that i did not see much value on using it, except for its reactivity. But, given that this is such a small component, at the end decided to write it all in plain JavaScript. It is more code, at least looking only at the code i had to write, but i love how i only have to add an is="numerus-multiselect" attribute to HTML for it to work. [0]: https://github.com/alpinejs/alpine/discussions/1205 [1]: https://developer.mozilla.org/en-US/docs/Web/API/Element/attachShadow
2023-03-17 13:55:12 +00:00
}
}
deselectLast() {
const options = this.select.options;
for (let i = options.length - 1; i >= 0; i--) {
const option = options[i];
if (option.selected) {
this.selectOption(option, false);
break;
}
}
}
rebuild() {
this.rebuildTags();
this.rebuildOptions();
}
removeTags() {
Reimplement the multiselect as a custom element What i really set off on was to refactor the multiselect’s x-data context to a separate JavaScript file. I did not see the need at first, thinking that it would not matter because it was used only in a template and i was not duplicating the code in my files. However, i then realized that having the context in the template means the visitor has to download it each and every time it accesses a form with a multiselect, even if nothing changed, and, worse, it would download it multiple times if there were many multiselect controls. It makes more sense to put all that into a file that the browser would only download and parse once, if the proper caching is set. Once i realized that, it was a shame that AlpineJS has no way to do the same for the HTML structure[0], for the exact same reasons: not wanting to download many times the same extra <template> and other markup required to build the control for JavaScript users. And then i remembered that this is supposed to be custom element’s main selling point. At first i tried to create a shadow DOW to replace the <select> with the same <div> and <ul> that i used with Alpine, but it turns out that <select> is not one of the allowed elements that can have a shadow root attached[0]. Therefore, i changed the custom element to extend the <div> for the <select> and <label> instead—the same element that had the x-init context—, but i would have to define or include all the styles inside the shadow DOM, and bring the lang attribute, for it to look like it did before. Out with the shadow DOM, and modify the <div>’s contents instead. At this point the code was so far removed from the declarative way that AlpineJS promotes that i did not see much value on using it, except for its reactivity. But, given that this is such a small component, at the end decided to write it all in plain JavaScript. It is more code, at least looking only at the code i had to write, but i love how i only have to add an is="numerus-multiselect" attribute to HTML for it to work. [0]: https://github.com/alpinejs/alpine/discussions/1205 [1]: https://developer.mozilla.org/en-US/docs/Web/API/Element/attachShadow
2023-03-17 13:55:12 +00:00
this.tags.querySelectorAll('.tag').forEach((tag) => tag.remove());
}
rebuildTags() {
this.removeTags();
Reimplement the multiselect as a custom element What i really set off on was to refactor the multiselect’s x-data context to a separate JavaScript file. I did not see the need at first, thinking that it would not matter because it was used only in a template and i was not duplicating the code in my files. However, i then realized that having the context in the template means the visitor has to download it each and every time it accesses a form with a multiselect, even if nothing changed, and, worse, it would download it multiple times if there were many multiselect controls. It makes more sense to put all that into a file that the browser would only download and parse once, if the proper caching is set. Once i realized that, it was a shame that AlpineJS has no way to do the same for the HTML structure[0], for the exact same reasons: not wanting to download many times the same extra <template> and other markup required to build the control for JavaScript users. And then i remembered that this is supposed to be custom element’s main selling point. At first i tried to create a shadow DOW to replace the <select> with the same <div> and <ul> that i used with Alpine, but it turns out that <select> is not one of the allowed elements that can have a shadow root attached[0]. Therefore, i changed the custom element to extend the <div> for the <select> and <label> instead—the same element that had the x-init context—, but i would have to define or include all the styles inside the shadow DOM, and bring the lang attribute, for it to look like it did before. Out with the shadow DOM, and modify the <div>’s contents instead. At this point the code was so far removed from the declarative way that AlpineJS promotes that i did not see much value on using it, except for its reactivity. But, given that this is such a small component, at the end decided to write it all in plain JavaScript. It is more code, at least looking only at the code i had to write, but i love how i only have to add an is="numerus-multiselect" attribute to HTML for it to work. [0]: https://github.com/alpinejs/alpine/discussions/1205 [1]: https://developer.mozilla.org/en-US/docs/Web/API/Element/attachShadow
2023-03-17 13:55:12 +00:00
let empty = true;
for (const option of this.select.options) {
if (!option.selected) {
continue;
}
empty = false;
const tag = document.createElement('div');
this.tags.insertBefore(tag, this.search);
tag.classList.add('tag');
tag.dataset.numerusSearch = option.dataset.numerusSearch;
const span = document.createElement('span');
tag.append(span);
span.textContent = option.textContent;
const button = document.createElement('button');
tag.append(button);
button.type = 'button';
button.textContent = '×';
button.addEventListener('click', (e) => {
e.stopPropagation();
this.selectOption(option, false)
});
}
if (empty) {
this.search.setAttribute('placeholder', this.label.textContent);
} else {
this.search.removeAttribute('placeholder');
}
}
close() {
this.options.style.display = 'none';
this.search.setAttribute('aria-expanded', 'false');
Reimplement the multiselect as a custom element What i really set off on was to refactor the multiselect’s x-data context to a separate JavaScript file. I did not see the need at first, thinking that it would not matter because it was used only in a template and i was not duplicating the code in my files. However, i then realized that having the context in the template means the visitor has to download it each and every time it accesses a form with a multiselect, even if nothing changed, and, worse, it would download it multiple times if there were many multiselect controls. It makes more sense to put all that into a file that the browser would only download and parse once, if the proper caching is set. Once i realized that, it was a shame that AlpineJS has no way to do the same for the HTML structure[0], for the exact same reasons: not wanting to download many times the same extra <template> and other markup required to build the control for JavaScript users. And then i remembered that this is supposed to be custom element’s main selling point. At first i tried to create a shadow DOW to replace the <select> with the same <div> and <ul> that i used with Alpine, but it turns out that <select> is not one of the allowed elements that can have a shadow root attached[0]. Therefore, i changed the custom element to extend the <div> for the <select> and <label> instead—the same element that had the x-init context—, but i would have to define or include all the styles inside the shadow DOM, and bring the lang attribute, for it to look like it did before. Out with the shadow DOM, and modify the <div>’s contents instead. At this point the code was so far removed from the declarative way that AlpineJS promotes that i did not see much value on using it, except for its reactivity. But, given that this is such a small component, at the end decided to write it all in plain JavaScript. It is more code, at least looking only at the code i had to write, but i love how i only have to add an is="numerus-multiselect" attribute to HTML for it to work. [0]: https://github.com/alpinejs/alpine/discussions/1205 [1]: https://developer.mozilla.org/en-US/docs/Web/API/Element/attachShadow
2023-03-17 13:55:12 +00:00
}
open() {
this.options.removeAttribute('style');
this.search.setAttribute('aria-expanded', 'true');
Reimplement the multiselect as a custom element What i really set off on was to refactor the multiselect’s x-data context to a separate JavaScript file. I did not see the need at first, thinking that it would not matter because it was used only in a template and i was not duplicating the code in my files. However, i then realized that having the context in the template means the visitor has to download it each and every time it accesses a form with a multiselect, even if nothing changed, and, worse, it would download it multiple times if there were many multiselect controls. It makes more sense to put all that into a file that the browser would only download and parse once, if the proper caching is set. Once i realized that, it was a shame that AlpineJS has no way to do the same for the HTML structure[0], for the exact same reasons: not wanting to download many times the same extra <template> and other markup required to build the control for JavaScript users. And then i remembered that this is supposed to be custom element’s main selling point. At first i tried to create a shadow DOW to replace the <select> with the same <div> and <ul> that i used with Alpine, but it turns out that <select> is not one of the allowed elements that can have a shadow root attached[0]. Therefore, i changed the custom element to extend the <div> for the <select> and <label> instead—the same element that had the x-init context—, but i would have to define or include all the styles inside the shadow DOM, and bring the lang attribute, for it to look like it did before. Out with the shadow DOM, and modify the <div>’s contents instead. At this point the code was so far removed from the declarative way that AlpineJS promotes that i did not see much value on using it, except for its reactivity. But, given that this is such a small component, at the end decided to write it all in plain JavaScript. It is more code, at least looking only at the code i had to write, but i love how i only have to add an is="numerus-multiselect" attribute to HTML for it to work. [0]: https://github.com/alpinejs/alpine/discussions/1205 [1]: https://developer.mozilla.org/en-US/docs/Web/API/Element/attachShadow
2023-03-17 13:55:12 +00:00
}
toggle() {
if (this.isOpen()) {
this.close();
} else {
this.open();
}
}
isOpen() {
return !this.options.hasAttribute('style');
}
filter(search) {
this.toSearch = Multiselect.normalize(search);
this.rebuildOptions()
}
static normalize(s) {
return s.normalize('NFD').replace(/\p{Diacritic}/gu, '').toLowerCase().trim();
}
}
class Tags extends HTMLDivElement {
constructor() {
super();
this.initialized = false;
this.tags = [];
}
connectedCallback() {
if (!this.isConnected) {
return;
}
if (!this.initialized) {
for (const child of this.children) {
switch (child.nodeName) {
case 'INPUT':
this.input = child;
break;
case 'LABEL':
this.label = child;
break;
}
}
if (this.label && this.input) {
this.init();
}
}
if (this.initialized) {
this.onSearchKeydownHandler = (e) => {
switch (e.code) {
case "Space":
e.preventDefault();
// fallthrough
case "Enter":
if (e.target.value.trim() !== '') {
e.preventDefault();
this.createTag();
}
break;
case "Backspace":
if (e.target.value === '') {
this.removeLastTag();
}
break;
}
}
this.search.addEventListener('keydown', this.onSearchKeydownHandler);
this.onFocusOutHandler = (e) => {
if (this.contains(e.target)) return;
if (!e.target.isConnected) return;
if (this.search.value && this.search.value.trim() !== '') {
this.createTag();
}
this.dispatchEvent(new CustomEvent("numerus-tags-out", {bubbles: true}))
};
window.addEventListener('focusin', this.onFocusOutHandler);
document.addEventListener('click', this.onFocusOutHandler);
this.rebuild();
}
}
disconnectedCallback() {
if (this.initialized) {
this.removeTags();
document.removeEventListener('click', this.onFocusOutHandler);
window.removeEventListener('focusin', this.onFocusOutHandler);
this.onFocusOutHandler = null;
this.search.removeEventListener('keydown', this.onSearchKeydownHandler);
this.onSearchKeydownHandler = null;
}
}
init() {
this.initialized = true;
this.tagList = document.createElement('div');
this.append(this.tagList);
this.tagList.classList.add('tags');
this.input.type = 'hidden';
const tagsText = this.input.value.split(',');
for (const tagText of tagsText) {
const tagNormalized = Tags.normalize(tagText);
if (tagNormalized !== '' && this.tags.indexOf(tagNormalized) === -1) {
this.tags.push(tagNormalized);
}
}
this.search = document.createElement('input');
this.tagList.append(this.search);
this.search.id = this.input.id;
this.input.removeAttribute('id');
this.search.setAttribute('type', 'search');
this.input.setAttribute('aria-hidden', 'true');
this.search.setAttribute('spellcheck', 'false');
this.search.setAttribute('autocomplete', 'false');
// Must come after the search input
this.tagList.append(this.label);
const conditionsId = this.input.dataset.conditions;
if (conditionsId !== "") {
const conditions = document.getElementById(conditionsId);
if (conditions) {
const details = document.createElement('details');
details.classList.add('menu');
this.tagList.append(details);
const summary = document.createElement('summary');
details.append(summary);
const ul = document.createElement('ul');
ul.setAttribute('role', 'menu');
details.append(ul);
const options = conditions.querySelectorAll('label');
if (options && options.length > 0) {
summary.textContent = options[0].textContent.trim();
}
for (const option of options) {
const li = document.createElement('li');
li.setAttribute('role', 'presentation');
li.append(option);
ul.append(li);
const checkbox = option.querySelector('input');
if (checkbox && checkbox.checked) {
summary.textContent = option.textContent.trim();
}
}
conditions.remove();
details.addEventListener('toggle', function (e) {
const menu = e.target.querySelector('[role="menu"]');
if (e.target.open) {
const rect = menu.getBoundingClientRect();
if (rect.right > document.body.clientWidth) {
menu.style.left = Math.ceil(document.body.clientWidth - rect.right) + 'px';
}
console.log(rect, document.body.clientWidth);
} else {
menu.style.left = 0;
}
});
}
}
}
removeTags() {
this.tagList.querySelectorAll('.tag').forEach((tag) => tag.remove());
}
rebuild() {
const newValue = this.tags.join(',');
if (newValue !== this.input.value) {
this.input.value = newValue;
this.input.dispatchEvent(new Event('change', {bubbles: true}));
}
this.removeTags();
if (this.tags.length === 0) {
this.search.setAttribute('placeholder', this.label.textContent);
} else {
this.search.removeAttribute('placeholder');
for (const tagText of this.tags) {
const tag = document.createElement('div');
this.tagList.insertBefore(tag, this.search);
tag.classList.add('tag');
const span = document.createElement('span');
tag.append(span);
span.textContent = tagText;
const button = document.createElement('button');
tag.append(button);
button.type = 'button';
button.textContent = '×';
button.addEventListener('click', (e) => {
e.stopPropagation();
this.removeTag(tagText);
this.search.focus();
});
}
}
}
createTag() {
const tagText = Tags.normalize(this.search.value);
this.search.value = '';
if (this.tags.indexOf(tagText) === -1) {
this.tags.push(tagText);
this.rebuild();
}
}
static normalize(s) {
return s.normalize('NFD').replace(/\p{Diacritic}/gu, '').toLowerCase().trim();
}
removeLastTag() {
this.tags.pop();
this.rebuild();
}
removeTag(tagText) {
this.tags.splice(this.tags.indexOf(tagText), 1);
this.rebuild();
}
}
class ProductSearch extends HTMLDivElement {
constructor() {
super();
this.initialized = false;
this.tags = [];
}
connectedCallback() {
if (!this.isConnected) {
return;
}
if (!this.initialized) {
for (const child of this.children) {
switch (child.nodeName) {
case 'INPUT':
this.input = child;
break;
case 'LABEL':
this.label = child;
break;
}
}
if (this.label && this.input) {
this.init();
}
}
if (this.initialized) {
this.onSearchKeydownHandler = (e) => {
switch (e.code) {
case "Enter":
e.preventDefault();
this.selectHighlighted();
break;
case "ArrowDown":
if (e.altKey) {
this.open();
} else {
e.preventDefault();
this.highlightNext();
}
break;
case "ArrowUp":
if (e.altKey) {
this.close();
} else {
e.preventDefault();
this.highlightPrev();
}
break;
case "Escape":
this.close();
break;
}
};
this.input.addEventListener('keydown', this.onSearchKeydownHandler);
this.onFocusOutHandler = (e) => {
if (this.contains(e.target)) return;
if (!e.target.isConnected) return;
this.close();
}
window.addEventListener('focusin', this.onFocusOutHandler);
document.addEventListener('click', this.onFocusOutHandler);
}
}
disconnectedCallback() {
if (this.initialized) {
document.removeEventListener('click', this.onFocusOutHandler);
window.removeEventListener('focusin', this.onFocusOutHandler);
this.onFocusOutHandler = null;
this.input.removeEventListener('keydown', this.onSearchKeydownHandler);
this.onSearchKeydownHandler = null;
}
}
init() {
this.initialized = true;
this.input.setAttribute('spellcheck', 'false');
this.input.setAttribute('autocomplete', 'false');
this.input.setAttribute('role', 'combobox');
this.options = document.createElement('ul');
this.append(this.options);
this.options.classList.add('options')
this.options.setAttribute('role', 'listbox')
this.options.dataset.hxOn = "htmx:afterSettle: this.parentNode.settled()";
const indicator = document.createElement('img');
this.append(indicator);
indicator.classList.add('htmx-indicator');
indicator.src = '/static/bars.svg';
this.close();
}
settled() {
this.open();
}
open() {
this.options.removeAttribute('style');
this.input.setAttribute('aria-expanded', 'true');
const products = this.options.querySelectorAll('li[id]');
if (products.length > 0) {
this.highlight(this.currentHighlighted(), products.item(0));
}
}
close() {
this.input.removeAttribute('aria-activedescendant');
this.input.setAttribute('aria-expanded', 'false');
this.options.style.display = 'none';
}
highlightNext() {
const current = this.currentHighlighted();
if (!current) {
return;
}
this.highlight(current, current.nextElementSibling);
}
highlightPrev() {
const current = this.currentHighlighted();
if (!current) {
return;
}
this.highlight(current, current.previousElementSibling);
}
highlight(current, upcoming) {
if (!upcoming) {
return;
}
if (current) {
current.classList.remove('highlight');
}
this.input.setAttribute('aria-activedescendant', upcoming.id);
this.highlighted = upcoming.dataset.index;
upcoming.classList.add('highlight');
}
selectHighlighted() {
const highlighted = this.currentHighlighted();
if (highlighted) {
highlighted.click();
}
}
currentHighlighted() {
return document.getElementById(this.input.getAttribute('aria-activedescendant'));
}
}
Reimplement the multiselect as a custom element What i really set off on was to refactor the multiselect’s x-data context to a separate JavaScript file. I did not see the need at first, thinking that it would not matter because it was used only in a template and i was not duplicating the code in my files. However, i then realized that having the context in the template means the visitor has to download it each and every time it accesses a form with a multiselect, even if nothing changed, and, worse, it would download it multiple times if there were many multiselect controls. It makes more sense to put all that into a file that the browser would only download and parse once, if the proper caching is set. Once i realized that, it was a shame that AlpineJS has no way to do the same for the HTML structure[0], for the exact same reasons: not wanting to download many times the same extra <template> and other markup required to build the control for JavaScript users. And then i remembered that this is supposed to be custom element’s main selling point. At first i tried to create a shadow DOW to replace the <select> with the same <div> and <ul> that i used with Alpine, but it turns out that <select> is not one of the allowed elements that can have a shadow root attached[0]. Therefore, i changed the custom element to extend the <div> for the <select> and <label> instead—the same element that had the x-init context—, but i would have to define or include all the styles inside the shadow DOM, and bring the lang attribute, for it to look like it did before. Out with the shadow DOM, and modify the <div>’s contents instead. At this point the code was so far removed from the declarative way that AlpineJS promotes that i did not see much value on using it, except for its reactivity. But, given that this is such a small component, at the end decided to write it all in plain JavaScript. It is more code, at least looking only at the code i had to write, but i love how i only have to add an is="numerus-multiselect" attribute to HTML for it to work. [0]: https://github.com/alpinejs/alpine/discussions/1205 [1]: https://developer.mozilla.org/en-US/docs/Web/API/Element/attachShadow
2023-03-17 13:55:12 +00:00
customElements.define('numerus-multiselect', Multiselect, {extends: 'div'});
customElements.define('numerus-tags', Tags, {extends: 'div'});
customElements.define('numerus-product-search', ProductSearch, {extends: 'div'});
let savedTitle = '';
htmx.onLoad((target) => {
if (target.tagName === 'DIALOG') {
const details = document.querySelectorAll('details[open]');
for (const detail of details) {
detail.removeAttribute('open');
}
savedTitle = document.title;
document.title = target.querySelector('h2').textContent + ' — ' + savedTitle.substring(savedTitle.indexOf("—") + 1);
target.showModal();
const button = target.querySelector('.close-dialog');
if (button) {
button.addEventListener('click', (e) => {
htmx.trigger(e.target, 'closeModal');
}, {once: true});
}
}
})
htmx.on('htmx:configRequest', function (e) {
const element = e.detail.elt;
if (element && element.nodeName === 'FORM') {
let submitter = e.detail.triggeringEvent.submitter;
if (submitter) {
const action = submitter.attributes['formaction'];
if (action && action.value) {
e.detail.path = action.value;
}
}
}
})
htmx.on('closeModal', () => {
const openDialog = document.querySelector('dialog[open]');
if (!openDialog) {
return;
}
openDialog.close();
openDialog.remove();
document.title = savedTitle;
});
htmx.on(document, 'alpine:init', () => {
document.body.classList.remove('filters-visible');
Alpine.data('snackbar', () => ({
show: false, toast: "", toasts: [], timeoutId: null, init() {
htmx.on('htmx:error', (error) => {
this.showError(error.detail.errorInfo.error);
});
}, showError(message) {
this.toasts.push(message);
this.popUp();
}, popUp() {
if (this.toasts.length === 0) {
return;
}
if (this.show) {
this.dismiss();
return;
}
if (this.toast !== "") {
// It will show after remove calls popUp again.
return;
}
this.toast = this.toasts[0];
this.show = true;
this.timeoutId = setTimeout(this.dismiss.bind(this), 4000);
}, dismiss() {
if (!this.show) {
// already dismissed
return;
}
this.show = false;
clearTimeout(this.timeoutId);
this.timeoutId = setTimeout(this.remove.bind(this), 350);
}, remove() {
clearTimeout(this.timeoutId);
this.toasts.splice(0, 1);
this.toast = "";
this.popUp();
},
}));
});
function updateCurrentMenuItem() {
const path = window.location.pathname;
const items = document.querySelectorAll('body > nav a');
items.forEach((item, i) => {
const matches = path === item.pathname;
if (matches || (i !== 0 && path.startsWith(item.pathname))) {
item.setAttribute('aria-current', 'page');
} else {
item.removeAttribute('aria-current');
}
});
}
htmx.on('htmx:pushedIntoHistory', updateCurrentMenuItem);
htmx.on('htmx:replacedInHistory', updateCurrentMenuItem);