You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
261 lines
12 KiB
261 lines
12 KiB
7 months ago
|
/*
|
||
|
|
* Created by David Adams
|
||
|
|
* https://codeshack.io/multi-select-dropdown-html-javascript/
|
||
|
|
*
|
||
|
|
* Released under the MIT license
|
||
|
|
*/
|
||
|
|
class MultiSelect {
|
||
|
|
|
||
|
|
constructor(element, options = {}) {
|
||
|
|
let defaults = {
|
||
|
|
placeholder: 'Select item(s)',
|
||
|
|
max: null,
|
||
|
|
search: true,
|
||
|
|
selectAll: true,
|
||
|
|
listAll: true,
|
||
|
|
closeListOnItemSelect: false,
|
||
|
|
name: '',
|
||
|
|
width: '',
|
||
|
|
height: '',
|
||
|
|
dropdownWidth: '',
|
||
|
|
dropdownHeight: '',
|
||
|
|
data: [],
|
||
|
|
onChange: function() {},
|
||
|
|
onSelect: function() {},
|
||
|
|
onUnselect: function() {}
|
||
|
|
};
|
||
|
|
this.options = Object.assign(defaults, options);
|
||
|
|
this.selectElement = typeof element === 'string' ? document.querySelector(element) : element;
|
||
|
|
for(const prop in this.selectElement.dataset) {
|
||
|
|
if (this.options[prop] !== undefined) {
|
||
|
|
this.options[prop] = this.selectElement.dataset[prop];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
this.name = this.selectElement.getAttribute('name') ? this.selectElement.getAttribute('name') : 'multi-select-' + Math.floor(Math.random() * 1000000);
|
||
|
|
if (!this.options.data.length) {
|
||
|
|
let options = this.selectElement.querySelectorAll('option');
|
||
|
|
for (let i = 0; i < options.length; i++) {
|
||
|
|
this.options.data.push({
|
||
|
|
value: options[i].value,
|
||
|
|
text: options[i].innerHTML,
|
||
|
|
selected: options[i].selected,
|
||
|
|
html: options[i].getAttribute('data-html')
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
this.element = this._template();
|
||
|
|
this.selectElement.replaceWith(this.element);
|
||
|
|
this._updateSelected();
|
||
|
|
this._eventHandlers();
|
||
|
|
}
|
||
|
|
|
||
|
|
_template() {
|
||
|
|
let optionsHTML = '';
|
||
|
|
for (let i = 0; i < this.data.length; i++) {
|
||
|
|
optionsHTML += `
|
||
|
|
<div class="multi-select-option${this.selectedValues.includes(this.data[i].value) ? ' multi-select-selected' : ''}" data-value="${this.data[i].value}">
|
||
|
|
<span class="multi-select-option-radio"></span>
|
||
|
|
<span class="multi-select-option-text">${this.data[i].html ? this.data[i].html : this.data[i].text}</span>
|
||
|
|
</div>
|
||
|
|
`;
|
||
|
|
}
|
||
|
|
let selectAllHTML = '';
|
||
|
|
if (this.options.selectAll === true || this.options.selectAll === 'true') {
|
||
|
|
selectAllHTML = `<div class="multi-select-all">
|
||
|
|
<span class="multi-select-option-radio"></span>
|
||
|
|
<span class="multi-select-option-text">Select all</span>
|
||
|
|
</div>`;
|
||
|
|
}
|
||
|
|
let template = `
|
||
|
|
<div class="multi-select ${this.name}"${this.selectElement.id ? ' id="' + this.selectElement.id + '"' : ''} style="${this.width ? 'width:' + this.width + ';' : ''}${this.height ? 'height:' + this.height + ';' : ''}">
|
||
|
|
${this.selectedValues.map(value => `<input type="hidden" name="${this.name}[]" value="${value}">`).join('')}
|
||
|
|
<div class="multi-select-header" style="${this.width ? 'width:' + this.width + ';' : ''}${this.height ? 'height:' + this.height + ';' : ''}">
|
||
|
|
<span class="multi-select-header-max">${this.options.max ? this.selectedValues.length + '/' + this.options.max : ''}</span>
|
||
|
|
<span class="multi-select-header-placeholder">${this.placeholder}</span>
|
||
|
|
</div>
|
||
|
|
<div class="multi-select-options" style="${this.options.dropdownWidth ? 'width:' + this.options.dropdownWidth + ';' : ''}${this.options.dropdownHeight ? 'height:' + this.options.dropdownHeight + ';' : ''}">
|
||
|
|
${this.options.search === true || this.options.search === 'true' ? '<input type="text" class="multi-select-search" placeholder="Search...">' : ''}
|
||
|
|
${selectAllHTML}
|
||
|
|
${optionsHTML}
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
`;
|
||
|
|
let element = document.createElement('div');
|
||
|
|
element.innerHTML = template;
|
||
|
|
return element;
|
||
|
|
}
|
||
|
|
|
||
|
|
_eventHandlers() {
|
||
|
|
let headerElement = this.element.querySelector('.multi-select-header');
|
||
|
|
this.element.querySelectorAll('.multi-select-option').forEach(option => {
|
||
|
|
option.onclick = () => {
|
||
|
|
let selected = true;
|
||
|
|
if (!option.classList.contains('multi-select-selected')) {
|
||
|
|
if (this.options.max && this.selectedValues.length >= this.options.max) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
option.classList.add('multi-select-selected');
|
||
|
|
if (this.options.listAll === true || this.options.listAll === 'true') {
|
||
|
|
if (this.element.querySelector('.multi-select-header-option')) {
|
||
|
|
let opt = Array.from(this.element.querySelectorAll('.multi-select-header-option')).pop();
|
||
|
|
opt.insertAdjacentHTML('afterend', `<span class="multi-select-header-option" data-value="${option.dataset.value}">${option.querySelector('.multi-select-option-text').innerHTML}</span>`);
|
||
|
|
} else {
|
||
|
|
headerElement.insertAdjacentHTML('afterbegin', `<span class="multi-select-header-option" data-value="${option.dataset.value}">${option.querySelector('.multi-select-option-text').innerHTML}</span>`);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
this.element.querySelector('.multi-select').insertAdjacentHTML('afterbegin', `<input type="hidden" name="${this.name}[]" value="${option.dataset.value}">`);
|
||
|
|
this.data.filter(data => data.value == option.dataset.value)[0].selected = true;
|
||
|
|
} else {
|
||
|
|
option.classList.remove('multi-select-selected');
|
||
|
|
this.element.querySelectorAll('.multi-select-header-option').forEach(headerOption => headerOption.dataset.value == option.dataset.value ? headerOption.remove() : '');
|
||
|
|
this.element.querySelector(`input[value="${option.dataset.value}"]`).remove();
|
||
|
|
this.data.filter(data => data.value == option.dataset.value)[0].selected = false;
|
||
|
|
selected = false;
|
||
|
|
}
|
||
|
|
if (this.options.listAll === false || this.options.listAll === 'false') {
|
||
|
|
if (this.element.querySelector('.multi-select-header-option')) {
|
||
|
|
this.element.querySelector('.multi-select-header-option').remove();
|
||
|
|
}
|
||
|
|
headerElement.insertAdjacentHTML('afterbegin', `<span class="multi-select-header-option">${this.selectedValues.length} selected</span>`);
|
||
|
|
}
|
||
|
|
if (!this.element.querySelector('.multi-select-header-option')) {
|
||
|
|
headerElement.insertAdjacentHTML('afterbegin', `<span class="multi-select-header-placeholder">${this.placeholder}</span>`);
|
||
|
|
} else if (this.element.querySelector('.multi-select-header-placeholder')) {
|
||
|
|
this.element.querySelector('.multi-select-header-placeholder').remove();
|
||
|
|
}
|
||
|
|
if (this.options.max) {
|
||
|
|
this.element.querySelector('.multi-select-header-max').innerHTML = this.selectedValues.length + '/' + this.options.max;
|
||
|
|
}
|
||
|
|
if (this.options.search === true || this.options.search === 'true') {
|
||
|
|
this.element.querySelector('.multi-select-search').value = '';
|
||
|
|
}
|
||
|
|
this.element.querySelectorAll('.multi-select-option').forEach(option => option.style.display = 'flex');
|
||
|
|
if (this.options.closeListOnItemSelect === true || this.options.closeListOnItemSelect === 'true') {
|
||
|
|
headerElement.classList.remove('multi-select-header-active');
|
||
|
|
}
|
||
|
|
this.options.onChange(option.dataset.value, option.querySelector('.multi-select-option-text').innerHTML, option);
|
||
|
|
if (selected) {
|
||
|
|
this.options.onSelect(option.dataset.value, option.querySelector('.multi-select-option-text').innerHTML, option);
|
||
|
|
} else {
|
||
|
|
this.options.onUnselect(option.dataset.value, option.querySelector('.multi-select-option-text').innerHTML, option);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
});
|
||
|
|
headerElement.onclick = () => headerElement.classList.toggle('multi-select-header-active');
|
||
|
|
if (this.options.search === true || this.options.search === 'true') {
|
||
|
|
let search = this.element.querySelector('.multi-select-search');
|
||
|
|
search.oninput = () => {
|
||
|
|
this.element.querySelectorAll('.multi-select-option').forEach(option => {
|
||
|
|
option.style.display = option.querySelector('.multi-select-option-text').innerHTML.toLowerCase().indexOf(search.value.toLowerCase()) > -1 ? 'flex' : 'none';
|
||
|
|
});
|
||
|
|
};
|
||
|
|
}
|
||
|
|
if (this.options.selectAll === true || this.options.selectAll === 'true') {
|
||
|
|
let selectAllButton = this.element.querySelector('.multi-select-all');
|
||
|
|
selectAllButton.onclick = () => {
|
||
|
|
let allSelected = selectAllButton.classList.contains('multi-select-selected');
|
||
|
|
this.element.querySelectorAll('.multi-select-option').forEach(option => {
|
||
|
|
let dataItem = this.data.find(data => data.value == option.dataset.value);
|
||
|
|
if (dataItem && ((allSelected && dataItem.selected) || (!allSelected && !dataItem.selected))) {
|
||
|
|
option.click();
|
||
|
|
}
|
||
|
|
});
|
||
|
|
selectAllButton.classList.toggle('multi-select-selected');
|
||
|
|
};
|
||
|
|
}
|
||
|
|
if (this.selectElement.id && document.querySelector('label[for="' + this.selectElement.id + '"]')) {
|
||
|
|
document.querySelector('label[for="' + this.selectElement.id + '"]').onclick = () => {
|
||
|
|
headerElement.classList.toggle('multi-select-header-active');
|
||
|
|
};
|
||
|
|
}
|
||
|
|
document.addEventListener('click', event => {
|
||
|
|
if (!event.target.closest('.' + this.name) && !event.target.closest('label[for="' + this.selectElement.id + '"]')) {
|
||
|
|
headerElement.classList.remove('multi-select-header-active');
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
_updateSelected() {
|
||
|
|
if (this.options.listAll === true || this.options.listAll === 'true') {
|
||
|
|
this.element.querySelectorAll('.multi-select-option').forEach(option => {
|
||
|
|
if (option.classList.contains('multi-select-selected')) {
|
||
|
|
this.element.querySelector('.multi-select-header').insertAdjacentHTML('afterbegin', `<span class="multi-select-header-option" data-value="${option.dataset.value}">${option.querySelector('.multi-select-option-text').innerHTML}</span>`);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
} else {
|
||
|
|
if (this.selectedValues.length > 0) {
|
||
|
|
this.element.querySelector('.multi-select-header').insertAdjacentHTML('afterbegin', `<span class="multi-select-header-option">${this.selectedValues.length} selected</span>`);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (this.element.querySelector('.multi-select-header-option')) {
|
||
|
|
this.element.querySelector('.multi-select-header-placeholder').remove();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
get selectedValues() {
|
||
|
|
return this.data.filter(data => data.selected).map(data => data.value);
|
||
|
|
}
|
||
|
|
|
||
|
|
get selectedItems() {
|
||
|
|
return this.data.filter(data => data.selected);
|
||
|
|
}
|
||
|
|
|
||
|
|
set data(value) {
|
||
|
|
this.options.data = value;
|
||
|
|
}
|
||
|
|
|
||
|
|
get data() {
|
||
|
|
return this.options.data;
|
||
|
|
}
|
||
|
|
|
||
|
|
set selectElement(value) {
|
||
|
|
this.options.selectElement = value;
|
||
|
|
}
|
||
|
|
|
||
|
|
get selectElement() {
|
||
|
|
return this.options.selectElement;
|
||
|
|
}
|
||
|
|
|
||
|
|
set element(value) {
|
||
|
|
this.options.element = value;
|
||
|
|
}
|
||
|
|
|
||
|
|
get element() {
|
||
|
|
return this.options.element;
|
||
|
|
}
|
||
|
|
|
||
|
|
set placeholder(value) {
|
||
|
|
this.options.placeholder = value;
|
||
|
|
}
|
||
|
|
|
||
|
|
get placeholder() {
|
||
|
|
return this.options.placeholder;
|
||
|
|
}
|
||
|
|
|
||
|
|
set name(value) {
|
||
|
|
this.options.name = value;
|
||
|
|
}
|
||
|
|
|
||
|
|
get name() {
|
||
|
|
return this.options.name;
|
||
|
|
}
|
||
|
|
|
||
|
|
set width(value) {
|
||
|
|
this.options.width = value;
|
||
|
|
}
|
||
|
|
|
||
|
|
get width() {
|
||
|
|
return this.options.width;
|
||
|
|
}
|
||
|
|
|
||
|
|
set height(value) {
|
||
|
|
this.options.height = value;
|
||
|
|
}
|
||
|
|
|
||
|
|
get height() {
|
||
|
|
return this.options.height;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
document.querySelectorAll('[data-multi-select]').forEach(select => new MultiSelect(select));
|