dees-catalog/ts_web/elements/dees-form.ts
2024-02-03 11:26:15 +01:00

206 lines
5.4 KiB
TypeScript

import {
customElement,
html,
type TemplateResult,
DeesElement,
type CSSResult,
} from '@design.estate/dees-element';
import * as domtools from '@design.estate/dees-domtools';
import { DeesInputCheckbox } from './dees-input-checkbox.js';
import { DeesInputText } from './dees-input-text.js';
import { DeesInputQuantitySelector } from './dees-input-quantityselector.js';
import { DeesInputRadio } from './dees-input-radio.js';
import { DeesFormSubmit } from './dees-form-submit.js';
import { DeesTable } from './dees-table.js';
import { demoFunc } from './dees-form.demo.js';
import { DeesInputIban } from './dees-input-iban.js';
// Unified set for form input types
const FORM_INPUT_TYPES = [
DeesInputCheckbox,
DeesInputIban,
DeesInputText,
DeesInputQuantitySelector,
DeesInputRadio,
DeesTable,
];
export type TFormInputElement =
| DeesInputCheckbox
| DeesInputIban
| DeesInputText
| DeesInputQuantitySelector
| DeesInputRadio
| DeesTable<any>;
declare global {
interface HTMLElementTagNameMap {
'dees-form': DeesForm;
}
}
@customElement('dees-form')
export class DeesForm extends DeesElement {
public static demo = demoFunc;
public name: string = 'myform';
public changeSubject = new domtools.plugins.smartrx.rxjs.Subject();
public readyDeferred = domtools.plugins.smartpromise.defer();
public render(): TemplateResult {
return html`
<style>
:host {
display: contents;
}
</style>
<slot></slot>
`;
}
public async firstUpdated() {
const formChildren = this.getFormElements();
this.updateRequiredStatus();
for (const child of formChildren) {
child.changeSubject.subscribe(async () => {
const valueObject = await this.collectFormData();
this.changeSubject.next(valueObject);
console.log(valueObject);
this.updateRequiredStatus();
});
}
await this.addBehaviours();
this.readyDeferred.resolve();
}
public getFormElements(): Array<TFormInputElement> {
return Array.from(this.children).filter((child) =>
FORM_INPUT_TYPES.includes(child.constructor as any)
) as unknown as TFormInputElement[];
}
public getSubmitButton(): DeesFormSubmit | undefined {
return Array.from(this.children).find(
(child) => child instanceof DeesFormSubmit
) as DeesFormSubmit;
}
public async updateRequiredStatus() {
console.log('checking the required status.');
let requiredOK = true;
for (const childArg of this.getFormElements()) {
if (childArg.required && !childArg.value) {
requiredOK = false;
}
}
if (this.getSubmitButton()) {
this.getSubmitButton().disabled = !requiredOK;
}
}
/**
* collects the form data
* @returns
*/
public async collectFormData() {
const children = this.getFormElements();
const valueObject: { [key: string]: string | number | boolean | any[] } = {};
for (const child of children) {
if (!child.key) {
console.log(`form element with label "${child.label}" has no key. skipping.`);
}
valueObject[child.key] = child.value;
}
return valueObject;
}
public async gatherAndDispatch() {
const valueObject = await this.collectFormData();
const formDataEvent = new CustomEvent('formData', {
detail: {
data: valueObject,
},
bubbles: true,
});
this.dispatchEvent(formDataEvent);
console.log('dispatched data:');
console.log(valueObject);
}
public setStatus(
visualStateArg: 'normal' | 'pending' | 'error' | 'success',
textStateArg: string
) {
const inputChildren = this.getFormElements();
const submitButton = this.getSubmitButton();
switch (visualStateArg) {
case 'normal':
submitButton.disabled = false;
submitButton.status = 'normal';
for (const inputChild of inputChildren) {
inputChild.disabled = false;
}
break;
case 'pending':
submitButton.disabled = true;
submitButton.status = 'pending';
for (const inputChild of inputChildren) {
inputChild.disabled = true;
}
break;
case 'success':
submitButton.disabled = true;
submitButton.status = 'success';
for (const inputChild of inputChildren) {
inputChild.disabled = true;
}
break;
case 'error':
submitButton.disabled = true;
submitButton.status = 'error';
for (const inputChild of inputChildren) {
inputChild.disabled = true;
}
break;
}
submitButton.text = textStateArg;
}
/**
* resets the form
*/
reset() {
const inputChildren = this.getFormElements();
const submitButton = this.getSubmitButton();
for (const inputChild of inputChildren) {
inputChild.value = null;
}
this.setStatus('normal', 'Submit');
}
public async addBehaviours() {
// Use event delegation
this.addEventListener('keydown', (event: KeyboardEvent) => {
const target = event.target as DeesElement;
if (!FORM_INPUT_TYPES.includes(target.constructor as any)) return;
if (event.key === 'Enter') {
const children = this.getFormElements();
const currentIndex = children.indexOf(target as any);
if (currentIndex < children.length - 1) {
children[currentIndex + 1].focus();
} else {
target.blur();
this.getSubmitButton()?.focus();
}
}
});
}
}