1 line
4.2 KiB
JavaScript
1 line
4.2 KiB
JavaScript
const smForm = document.createElement("template"); smForm.innerHTML = '\n <style>\n *{\n padding: 0;\n margin: 0;\n box-sizing: border-box;\n }\n :host{\n display: grid;\n width: 100%;\n }\n form{\n display: inherit;\n gap: var(--gap, 1.5rem);\n width: 100%;\n }\n </style>\n <form part="form" onsubmit="return false">\n <slot></slot>\n </form>\n ', 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.invalidFieldsCount, this.skipSubmit = !1, this.isFormValid = void 0, this.supportedElements = "input, sm-input, sm-textarea, sm-checkbox, tags-input, file-input, sm-switch, sm-radio", this.formElements = [], this._requiredElements = [], 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) } static get observedAttributes() { return ["skip-submit"] } get validity() { return this.isFormValid } debounce(e, t) { let i = null; return (...s) => { window.clearTimeout(i), i = window.setTimeout((() => { e.apply(null, s) }), t) } } _checkValidity() { this.submitButton && 0 !== this._requiredElements.length && (this.invalidFieldsCount = 0, this._requiredElements.forEach((([e, t]) => { (!e.disabled && t && !e.isValid || !t && !e.checkValidity()) && this.invalidFieldsCount++ })), this.isFormValid !== (0 === this.invalidFieldsCount) && (this.isFormValid = 0 === this.invalidFieldsCount, this.dispatchEvent(new CustomEvent(this.isFormValid ? "valid" : "invalid", { bubbles: !0, composed: !0 })), this.skipSubmit || (this.submitButton.disabled = !this.isFormValid))) } handleKeydown(e) { if ("Enter" === e.key && e.target.tagName.includes("INPUT")) if (0 === this.invalidFieldsCount) this.submitButton && this.submitButton.click(), this.dispatchEvent(new CustomEvent("submit", { bubbles: !0, composed: !0 })); else for (const [e, t] of this._requiredElements) { if (t ? !e.isValid : !e.checkValidity()) { (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" }), t ? e.focusIn() : e.focus(); break } } } reset() { this.formElements.forEach((([e, t]) => { if (t) e.reset(); else switch (e.type) { case "checkbox": case "radio": e.checked = !1; break; default: e.value = "" } })), this._checkValidity() } elementsChanged() { this.formElements = [...this.querySelectorAll(this.supportedElements)].map((e => [e, e.tagName.includes("-")])), this._requiredElements = this.formElements.filter((([e]) => e.hasAttribute("required"))), 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() { const e = this.debounce(this.elementsChanged, 100); this.addEventListener("input", this.debounce(this._checkValidity, 100)), this.addEventListener("keydown", this.debounce(this.handleKeydown, 100)), this.shadowRoot.querySelector("slot").addEventListener("slotchange", e), this.mutationObserver = new MutationObserver((t => { t.forEach((t => { ("childList" === t.type && [...t.addedNodes].some((e => 1 === e.nodeType && e.querySelector(this.supportedElements))) || [...t.removedNodes].some((e => 1 === e.nodeType && e.querySelector(this.supportedElements)))) && e() })) })), this.mutationObserver.observe(this, { childList: !0, subtree: !0 }) } attributeChangedCallback(e, t, i) { "skip-submit" === e && (this.skipSubmit = null !== i) } disconnectedCallback() { this.removeEventListener("input", this.debounce(this._checkValidity, 100)), this.removeEventListener("keydown", this.debounce(this.handleKeydown, 100)), this.mutationObserver.disconnect() } }); |