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switch.ts
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switch.ts
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// eslint-disable-next-line max-classes-per-file
import { WUPCssIconHover, WUPcssHidden } from "../styles";
import WUPBaseControl, { SetValueReasons } from "./baseControl";
const tagName = "wup-switch";
declare global {
namespace WUP.Switch {
interface EventMap extends WUP.BaseControl.EventMap {}
interface ValidityMap extends WUP.BaseControl.ValidityMap {}
interface NewOptions {
/** Reversed-style (switch+label for true vs label+switch)
* @defaultValue false */
reverse: boolean;
}
interface Options<T = boolean, VM = ValidityMap> extends WUP.BaseControl.Options<T, VM>, NewOptions {}
interface JSXProps<C = WUPSwitchControl> extends WUP.BaseControl.JSXProps<C>, WUP.Base.OnlyNames<NewOptions> {
"w-reverse"?: boolean | "";
/** @deprecated use `initValue` instead */
defaultChecked?: boolean;
}
}
interface HTMLElementTagNameMap {
[tagName]: WUPSwitchControl; // add element to document.createElement
}
namespace JSX {
interface IntrinsicElements {
/** Form-control with toggle button
* @see {@link WUPSwitchControl} */
[tagName]: WUP.Base.ReactHTML<WUPSwitchControl> & WUP.Switch.JSXProps; // add element to tsx/jsx intellisense (react)
}
}
}
// @ts-ignore - because Preact & React can't work together
declare module "preact/jsx-runtime" {
namespace JSX {
// eslint-disable-next-line @typescript-eslint/no-unused-vars
interface HTMLAttributes<RefType> {}
interface IntrinsicElements {
/** Form-control with toggle button
* @see {@link WUPSwitchControl} */
[tagName]: HTMLAttributes<WUPSwitchControl> & WUP.Switch.JSXProps; // add element to tsx/jsx intellisense (preact)
}
}
}
/** Form-control with toggle button
* @example
const el = document.createElement("wup-switch");
el.$options.name = "isDarkMode";
el.$options.label = "Dark Mode";
el.$initValue = false;
const form = document.body.appendChild(document.createElement("wup-form"));
form.appendChild(el);
// or HTML
<wup-form>
<wup-switch w-name="isDarkMode" w-label="Dark Mode" w-initvalue="false"/>
</wup-form>;
* @tutorial innerHTML @example
* <label>
* <input type='checkbox'/>
* <strong>{$options.label}</strong>
* <span bar>
* <span thumb></span>
* </span>
* </label> */
export default class WUPSwitchControl<
TOptions extends WUP.Switch.Options = WUP.Switch.Options,
EventMap extends WUP.Switch.EventMap = WUP.Switch.EventMap
> extends WUPBaseControl<boolean, TOptions, EventMap> {
#ctr = this.constructor as typeof WUPSwitchControl;
static get $styleRoot(): string {
return `:root {
--ctrl-switch-padding: 1em;
--ctrl-switch-on: #fff;
--ctrl-switch-off: #fff;
--ctrl-switch-off-bg: #9f9f9f;
--ctrl-switch-on-bg: var(--ctrl-focus);
--ctrl-switch-shadow: #0003;
--ctrl-switch-h: var(--ctrl-icon-size);
--ctrl-switch-w: calc(var(--ctrl-icon-size) * 2.8);
--ctrl-switch-r: calc(var(--ctrl-icon-size) * 1.4);
}
[wupdark] {
--ctrl-switch-on: #e7e7e7;
--ctrl-switch-off: #e7e7e7;
--ctrl-switch-off-bg: #707070;
--ctrl-switch-shadow: #000;
}`;
}
static get $style(): string {
return `${super.$style}
:host {
background: none;
cursor: pointer;
}
:host[readonly] {
cursor: initial;
}
:host label {
display: flex;
gap: 0.5em;
padding: var(--ctrl-switch-padding);
}
:host strong {
box-sizing: border-box;
text-overflow: ellipsis;
overflow: hidden;
white-space: nowrap;
font-weight: normal;
text-decoration: none;
color: inherit;
}
:host [bar] {
display: inline-flex;
align-items: center;
overflow: visible;
width: var(--ctrl-switch-w);
min-width: var(--ctrl-switch-w);
height: var(--ctrl-switch-h);
border-radius: 999px;
color: whitesmoke;
background: var(--ctrl-switch-off-bg);
}
${WUPCssIconHover(":host", "[thumb]")}
:host [thumb] {
z-index: 2;
display: inline-block;
height: var(--ctrl-switch-r);
width: var(--ctrl-switch-r);
background: var(--ctrl-switch-off);
box-shadow: 0 1px 4px 0 var(--ctrl-switch-shadow);
border-radius: 50%;
transform: translateX(-1px);
}
:host input { ${WUPcssHidden} }
:host[checked] [bar] {
background-color: var(--ctrl-switch-on-bg);
}
:host[checked] [thumb] {
background: var(--ctrl-switch-on);
transform: translateX(var(--ctrl-switch-w)) translateX(calc(-100% + 1px));
}
:host[w-reverse] label {
flex-direction: row-reverse;
}
:host[w-reverse] strong {
margin-right: auto;
}
@media not all and (prefers-reduced-motion) {
:host [bar] { transition: background-color var(--anim); }
:host [thumb] { transition: transform var(--anim); }
}`;
}
static $isEqual(v1: boolean | undefined, v2: boolean | undefined): boolean {
return !!v1 === !!v2;
}
static get observedAttributes(): Array<string> {
const arr = super.observedAttributes;
arr.push("defaultchecked");
return arr;
}
static $defaults: WUP.Switch.Options = {
...WUPBaseControl.$defaults,
validationRules: { ...WUPBaseControl.$defaults.validationRules },
reverse: false,
};
get $value(): boolean {
return !!super.$value as boolean;
}
set $value(v: boolean) {
super.$value = !!v;
}
override parse(text: string): boolean | undefined {
return text === "" || text === "1" || text.toLowerCase() === "true";
}
override valueToStorage(v: boolean): string | null {
return v ? "1" : null;
}
protected override renderControl(): void {
this.$refInput.id = this.#ctr.$uniqueId;
this.$refLabel.setAttribute("for", this.$refInput.id);
this.$refInput.type = "checkbox";
this.$refLabel.appendChild(this.$refInput);
this.$refLabel.appendChild(this.$refTitle);
const sp = document.createElement("span");
sp.setAttribute("bar", "");
sp.appendChild(document.createElement("span")).setAttribute("thumb", "");
this.$refLabel.appendChild(sp);
this.appendChild(this.$refLabel);
}
protected override gotReady(): void {
super.gotReady();
this.$refInput.oninput = (e) => this.gotInput(e);
}
/** Called when user changes value via click or keyboard */
protected gotInput(e: Event): void {
const el = e.target as HTMLInputElement;
if (this.$isReadOnly) {
el.checked = !el.checked;
} else {
this.setValue(el.checked, SetValueReasons.userInput);
}
}
protected override setValue(v: boolean, reason: SetValueReasons): boolean | null {
const r = super.setValue(v, reason);
this.$refInput.checked = !!v;
this.setAttr("checked", this.$refInput.checked, true);
return r;
}
protected override gotChanges(propsChanged: Array<keyof WUP.Switch.Options | any> | null): void {
super.gotChanges(propsChanged as any);
this.setAttr("w-reverse", this._opts.reverse, true);
}
override gotFormChanges(propsChanged: Array<keyof WUP.Form.Options> | null): void {
super.gotFormChanges(propsChanged);
this.setAttr.call(this.$refInput, "aria-readonly", this.$isReadOnly);
}
protected override attributeChangedCallback(name: string, oldValue: string | null, newValue: string | null): void {
if (name === "defaultchecked") {
name = "initvalue";
}
super.attributeChangedCallback(name, oldValue, newValue);
}
}
customElements.define(tagName, WUPSwitchControl);