kopia lustrzana https://github.com/shoelace-style/shoelace
169 wiersze
4.2 KiB
TypeScript
169 wiersze
4.2 KiB
TypeScript
import { Component, Event, EventEmitter, Method, Prop, State, Watch, h } from '@stencil/core';
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let id = 0;
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/**
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* @since 2.0
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* @status stable
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*
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* @slot - The switch's label.
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*
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* @part base - The component's base wrapper.
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* @part control - The switch control.
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* @part thumb - The switch position indicator.
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* @part label - The switch label.
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*/
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@Component({
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tag: 'sl-switch',
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styleUrl: 'switch.scss',
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shadow: true
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})
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export class Switch {
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switchId = `switch-${++id}`;
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labelId = `switch-label-${id}`;
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input: HTMLInputElement;
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@State() hasFocus = false;
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/** The switch's name attribute. */
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@Prop() name: string;
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/** The switch's value attribute. */
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@Prop() value: string;
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/** Set to true to disable the switch. */
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@Prop() disabled = false;
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/** Set to true to make the switch a required field. */
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@Prop() required = false;
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/** Set to true to draw the switch in a checked state. */
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@Prop({ mutable: true, reflect: true }) checked = false;
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/** This will be true when the control is in an invalid state. Validity is determined by the `required` prop. */
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@Prop({ mutable: true, reflect: true }) invalid = false;
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@Watch('checked')
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handleCheckedChange() {
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this.input.checked = this.checked;
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this.slChange.emit();
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}
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/** Emitted when the control loses focus. */
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@Event({ eventName: 'sl-blur' }) slBlur: EventEmitter;
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/** Emitted when the control's checked state changes. */
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@Event({eventName: 'sl-change' }) slChange: EventEmitter;
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/** Emitted when the control gains focus. */
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@Event({eventName: 'sl-focus' }) slFocus: EventEmitter;
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connectedCallback() {
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this.handleClick = this.handleClick.bind(this);
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this.handleBlur = this.handleBlur.bind(this);
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this.handleFocus = this.handleFocus.bind(this);
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this.handleKeyDown = this.handleKeyDown.bind(this);
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this.handleMouseDown = this.handleMouseDown.bind(this);
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}
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/** Sets focus on the switch. */
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@Method()
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async setFocus() {
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this.input.focus();
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}
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/** Removes focus from the switch. */
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@Method()
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async removeFocus() {
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this.input.blur();
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}
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/** Checks for validity and shows the browser's validation message if the control is invalid. */
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@Method()
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async reportValidity() {
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return this.input.reportValidity();
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}
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/** Sets a custom validation message. If `message` is not empty, the field will be considered invalid. */
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@Method()
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async setCustomValidity(message: string) {
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this.input.setCustomValidity(message);
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this.invalid = !this.input.checkValidity();
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}
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handleClick() {
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this.checked = this.input.checked;
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}
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handleBlur() {
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this.hasFocus = false;
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this.slBlur.emit();
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}
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handleFocus() {
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this.hasFocus = true;
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this.slFocus.emit();
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}
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handleKeyDown(event: KeyboardEvent) {
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if (event.key === 'ArrowLeft') {
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event.preventDefault();
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this.checked = false;
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}
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if (event.key === 'ArrowRight') {
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event.preventDefault();
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this.checked = true;
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}
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}
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handleMouseDown(event: MouseEvent) {
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// Prevent clicks on the label from briefly blurring the input
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event.preventDefault();
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this.input.focus();
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}
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render() {
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return (
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<label
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part="base"
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htmlFor={this.switchId}
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class={{
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switch: true,
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'switch--checked': this.checked,
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'switch--disabled': this.disabled,
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'switch--focused': this.hasFocus
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}}
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onMouseDown={this.handleMouseDown}
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>
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<span part="control" class="switch__control">
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<span part="thumb" class="switch__thumb" />
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<input
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ref={el => (this.input = el)}
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id={this.switchId}
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type="checkbox"
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name={this.name}
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value={this.value}
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checked={this.checked}
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disabled={this.disabled}
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required={this.required}
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role="switch"
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aria-checked={this.checked}
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aria-labelledby={this.labelId}
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onClick={this.handleClick}
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onBlur={this.handleBlur}
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onFocus={this.handleFocus}
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onKeyDown={this.handleKeyDown}
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/>
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</span>
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<span part="label" id={this.labelId} class="switch__label">
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<slot />
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</span>
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</label>
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);
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}
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}
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