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| 1 | +import { Controller } from '@hotwired/stimulus'; |
| 2 | + |
| 3 | +const DEFAULT_ITEMS_SELECTOR = ':scope > :is(div, fieldset)'; |
| 4 | +var ButtonType; |
| 5 | +(function (ButtonType) { |
| 6 | + ButtonType["Add"] = "add"; |
| 7 | + ButtonType["Delete"] = "delete"; |
| 8 | +})(ButtonType || (ButtonType = {})); |
| 9 | +class controller extends Controller { |
| 10 | + connect() { |
| 11 | + this.connectCollection(this.element); |
| 12 | + } |
| 13 | + connectCollection(parent) { |
| 14 | + parent.querySelectorAll('[data-prototype]').forEach((el) => { |
| 15 | + const collectionEl = el; |
| 16 | + const items = this.getItems(collectionEl); |
| 17 | + collectionEl.dataset.currentIndex = items.length.toString(); |
| 18 | + this.addAddButton(collectionEl); |
| 19 | + this.getItems(collectionEl).forEach(itemEl => this.addDeleteButton(collectionEl, itemEl)); |
| 20 | + }); |
| 21 | + } |
| 22 | + getItems(collectionElement) { |
| 23 | + return collectionElement.querySelectorAll(collectionElement.dataset.itemsSelector || DEFAULT_ITEMS_SELECTOR); |
| 24 | + } |
| 25 | + createButton(collectionEl, buttonType) { |
| 26 | + const buttonTemplateID = collectionEl.dataset[`${buttonType}ButtonTemplateId`]; |
| 27 | + if (buttonTemplateID && 'content' in document.createElement('template')) { |
| 28 | + const buttonTemplate = document.getElementById(buttonTemplateID); |
| 29 | + if (!buttonTemplate) |
| 30 | + throw new Error(`element with ID "${buttonTemplateID}" not found`); |
| 31 | + return buttonTemplate.content.cloneNode(true); |
| 32 | + } |
| 33 | + const button = document.createElement('button'); |
| 34 | + button.type = 'button'; |
| 35 | + button.textContent = buttonType === ButtonType.Add ? 'Add' : 'Delete'; |
| 36 | + return button; |
| 37 | + } |
| 38 | + addItem(collectionEl) { |
| 39 | + const currentIndex = collectionEl.dataset.currentIndex; |
| 40 | + collectionEl.dataset.currentIndex++; |
| 41 | + const collectionNamePattern = collectionEl.id.replace(/_/g, '(?:_|\\[|]\\[)'); |
| 42 | + const prototype = collectionEl.dataset.prototype |
| 43 | + .replace('__name__label__', currentIndex) |
| 44 | + .replace(new RegExp(`(${collectionNamePattern}(?:_|]\\[))__name__`, 'g'), `$1${currentIndex}`); |
| 45 | + const fakeEl = document.createElement('div'); |
| 46 | + fakeEl.innerHTML = prototype; |
| 47 | + const itemEl = fakeEl.firstElementChild; |
| 48 | + this.connectCollection(itemEl); |
| 49 | + this.addDeleteButton(collectionEl, itemEl); |
| 50 | + const items = this.getItems(collectionEl); |
| 51 | + items.length ? items[items.length - 1].insertAdjacentElement('afterend', itemEl) : collectionEl.prepend(itemEl); |
| 52 | + } |
| 53 | + addAddButton(collectionEl) { |
| 54 | + const addButton = this.createButton(collectionEl, ButtonType.Add); |
| 55 | + addButton.onclick = (e) => { |
| 56 | + e.preventDefault(); |
| 57 | + this.addItem(collectionEl); |
| 58 | + }; |
| 59 | + collectionEl.appendChild(addButton); |
| 60 | + } |
| 61 | + addDeleteButton(collectionEl, itemEl) { |
| 62 | + const deleteButton = this.createButton(collectionEl, ButtonType.Delete); |
| 63 | + deleteButton.onclick = (e) => { |
| 64 | + e.preventDefault(); |
| 65 | + itemEl.remove(); |
| 66 | + }; |
| 67 | + itemEl.appendChild(deleteButton); |
| 68 | + } |
| 69 | +} |
| 70 | + |
| 71 | +export { controller as default }; |
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