1 line
6.1 KiB
JavaScript
1 line
6.1 KiB
JavaScript
const smForm = document.createElement("template"); smForm.innerHTML = ` <style> *{ padding: 0; margin: 0; box-sizing: border-box; } :host{ display: grid; width: 100%; } form{ display: inherit; gap: var(--gap, 1.5rem); width: 100%; } </style> <form part="form" onsubmit="return false"> <slot></slot> </form> `, customElements.define("sm-form", class extends HTMLElement { constructor() { super(), this.attachShadow({ mode: "open" }).append(smForm.content.cloneNode(!0)), this.form = this.shadowRoot.querySelector("form"), this.formElements, this.submitButton, this.resetButton, this.invalidFields = !1, this.mutationObserver, this.debounce = this.debounce.bind(this), this._checkValidity = this._checkValidity.bind(this), this.handleKeydown = this.handleKeydown.bind(this), this.reset = this.reset.bind(this), this.elementsChanged = this.elementsChanged.bind(this) } debounce(t, e) { let s = null; return (...i) => { window.clearTimeout(s), s = window.setTimeout(() => { t.apply(null, i) }, e) } } _checkValidity() { this.submitButton && (this.invalidFields = this._requiredElements.filter(([t, e]) => e ? !t.isValid : !t.checkValidity()), this.submitButton.disabled = this.invalidFields.length > 0) } handleKeydown(t) { if ("Enter" === t.key && t.target.tagName.includes("INPUT")) { if (this.invalidFields.length) for (let [e, s] of this._requiredElements) { let i = s ? !e.isValid : !e.checkValidity(); if (i) { (e?.shadowRoot?.lastElementChild || e).animate([{ transform: "translateX(-1rem)" }, { transform: "translateX(1rem)" }, { transform: "translateX(-0.5rem)" }, { transform: "translateX(0.5rem)" }, { transform: "translateX(0)" },], { duration: 300, easing: "ease" }), s ? e.focusIn() : e.focus(); break } } else this.submitButton && this.submitButton.click(), this.dispatchEvent(new CustomEvent("submit", { bubbles: !0, composed: !0 })) } } reset() { this.formElements.forEach(t => t.reset()) } elementsChanged() { this._requiredElements = [], this.formElements = [...this.querySelectorAll("input, sm-input, sm-textarea, sm-checkbox, tags-input, file-input, sm-switch, sm-radio")], this.formElements.forEach(t => { t.hasAttribute("required") && this._requiredElements.push([t, t.tagName.includes("-")]) }), this.submitButton = this.querySelector('[variant="primary"], [type="submit"]'), this.resetButton = this.querySelector('[type="reset"]'), this.resetButton && this.resetButton.addEventListener("click", this.reset), this._checkValidity() } connectedCallback() { this.shadowRoot.querySelector("slot").addEventListener("slotchange", this.elementsChanged), this.addEventListener("input", this.debounce(this._checkValidity, 100)), this.addEventListener("keydown", this.debounce(this.handleKeydown, 100)), this.mutationObserver = new MutationObserver(t => { t.forEach(t => { "childList" === t.type && this.elementsChanged() }) }), this.mutationObserver.observe(this, { childList: !0, subtree: !0 }) } disconnectedCallback() { this.removeEventListener("input", this.debounce(this._checkValidity, 100)), this.removeEventListener("keydown", this.debounce(this.handleKeydown, 100)), this.mutationObserver.disconnect() } }); |