igniteui-webcomponents
Version:
Ignite UI for Web Components is a complete library of UI components, giving you the ability to build modern web applications using encapsulation and the concept of reusable components in a dependency-free approach.
302 lines • 11.7 kB
JavaScript
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
import { html, LitElement, nothing } from 'lit';
import { property, query, state } from 'lit/decorators.js';
import { range } from 'lit/directives/range.js';
import { repeat } from 'lit/directives/repeat.js';
import { styleMap } from 'lit/directives/style-map.js';
import { addThemingController } from '../../theming/theming-controller.js';
import { addKeybindings, arrowDown, arrowLeft, arrowRight, arrowUp, endKey, homeKey, } from '../common/controllers/key-bindings.js';
import { addSlotController, setSlots, } from '../common/controllers/slot.js';
import { registerComponent } from '../common/definitions/register.js';
import { EventEmitterMixin } from '../common/mixins/event-emitter.js';
import { FormAssociatedMixin } from '../common/mixins/forms/associated.js';
import { FormValueNumberTransformers } from '../common/mixins/forms/form-transformers.js';
import { createFormValueState } from '../common/mixins/forms/form-value.js';
import { asNumber, bindIf, clamp, formatString, isLTR, numberOfDecimals, roundPrecise, } from '../common/util.js';
import IgcIconComponent from '../icon/icon.js';
import IgcRatingSymbolComponent from './rating-symbol.js';
import { styles } from './themes/rating.base.css.js';
import { styles as shared } from './themes/shared/rating.common.css.js';
import { all } from './themes/themes.js';
const Slots = setSlots('symbol', 'value-label');
export default class IgcRatingComponent extends FormAssociatedMixin(EventEmitterMixin(LitElement)) {
static { this.tagName = 'igc-rating'; }
static { this.styles = [styles, shared]; }
static register() {
registerComponent(IgcRatingComponent, IgcIconComponent, IgcRatingSymbolComponent);
}
get _isInteractive() {
return !(this.readOnly || this.disabled);
}
get _hasProjectedSymbols() {
return this._symbols.length > 0;
}
get _valueText() {
const value = this._round(this.value);
return this.valueFormat
? formatString(this.valueFormat, value, this.max)
: `${value} of ${this.max}`;
}
set max(value) {
this._max = this._hasProjectedSymbols
? this._symbols.length
: Math.max(0, value);
if (this._max < this.value) {
this.value = this._max;
}
}
get max() {
return this._max;
}
set step(value) {
this._step = this.single ? 1 : clamp(value, 0.001, 1);
}
get step() {
return this._step;
}
set value(number) {
const value = this.hasUpdated
? clamp(asNumber(number), 0, this.max)
: Math.max(asNumber(number), 0);
this._formValue.setValueAndFormState(value);
}
get value() {
return this._formValue.value;
}
set single(value) {
this._single = Boolean(value);
if (this._single) {
this.step = 1;
this.value = Math.ceil(this.value);
}
}
get single() {
return this._single;
}
constructor() {
super();
this._slots = addSlotController(this, {
slots: Slots,
onChange: this._handleSlotChange,
});
this._formValue = createFormValueState(this, {
initialValue: 0,
transformers: FormValueNumberTransformers,
});
this._max = 5;
this._step = 1;
this._single = false;
this._symbols = [];
this._hoverValue = -1;
this._hoverState = false;
this.hoverPreview = false;
this.readOnly = false;
this.allowReset = false;
addThemingController(this, all);
addKeybindings(this, {
skip: () => !this._isInteractive,
bindingDefaults: { repeat: true },
})
.set(arrowUp, () => this._emitValueUpdate(this.value + this.step))
.set(arrowRight, () => this._emitValueUpdate(isLTR(this) ? this.value + this.step : this.value - this.step))
.set(arrowDown, () => this._emitValueUpdate(this.value - this.step))
.set(arrowLeft, () => this._emitValueUpdate(isLTR(this) ? this.value - this.step : this.value + this.step))
.set(homeKey, () => this._emitValueUpdate(this.step))
.set(endKey, () => this._emitValueUpdate(this.max));
}
firstUpdated() {
this._formValue.setValueAndFormState(clamp(this.value, 0, this.max));
this._pristine = true;
}
updated() {
if (this._hasProjectedSymbols) {
this._updateProjectedSymbols();
}
}
_handleClick({ clientX }) {
const value = this._calcNewValue(clientX);
const sameValue = this.value === value;
if (this.allowReset && sameValue) {
this._emitValueUpdate(0);
}
else if (!sameValue) {
this._emitValueUpdate(value);
}
}
_handlePointerMove({ clientX }) {
const value = this._calcNewValue(clientX);
if (this._hoverValue !== value) {
this._hoverValue = value;
this.emitEvent('igcHover', { detail: this._hoverValue });
}
}
_handleSlotChange({ slot, }) {
if (slot === 'symbol') {
this._symbols = this._slots.getAssignedElements('symbol', {
selector: IgcRatingSymbolComponent.tagName,
});
if (this._hasProjectedSymbols) {
this.max = this._symbols.length;
}
}
}
_handleHoverEnabled() {
this._hoverState = true;
}
_handleHoverDisabled() {
this._hoverState = false;
}
_emitValueUpdate(next) {
this._setTouchedState();
const clamped = clamp(next, 0, this.max);
if (clamped !== this.value) {
this.value = clamped;
this.emitEvent('igcChange', { detail: this.value });
}
}
_calcNewValue(x) {
const { width, left, right } = this._container?.getBoundingClientRect() ?? new DOMRect(1, 1, 1, 1);
const percent = isLTR(this) ? (x - left) / width : (right - x) / width;
const value = this._round(this.max * percent);
return clamp(value, this.step, this.max);
}
_round(value) {
return roundPrecise(Math.ceil(value / this.step) * this.step, numberOfDecimals(this.step));
}
_updateProjectedSymbols() {
const ltr = isLTR(this);
const partFull = '[part="symbol full"]';
const partEmpty = '[part="symbol empty"]';
for (const [i, symbol] of this._symbols.entries()) {
const full = symbol.renderRoot.querySelector(partFull);
const empty = symbol.renderRoot.querySelector(partEmpty);
const { forward, backward } = this._clipSymbol(i, ltr);
if (full) {
full.style.clipPath = forward;
}
if (empty) {
empty.style.clipPath = backward;
}
}
}
_clipSymbol(index, isLTR = true) {
const value = this._hoverState ? this._hoverValue : this.value;
const progress = index + 1 - value;
const exclusive = progress === 0 || value === index + 1 ? 0 : 1;
const selection = this.single ? exclusive : progress;
const activate = (p) => clamp(p * 100, 0, 100);
const forward = `inset(0 ${activate(isLTR ? selection : 1 - selection)}% 0 0)`;
const backward = `inset(0 0 0 ${activate(isLTR ? 1 - selection : selection)}%)`;
return {
backward: isLTR ? backward : forward,
forward: isLTR ? forward : backward,
};
}
stepUp(n = 1) {
this.value += this._round(n * this.step);
}
stepDown(n = 1) {
this.value -= this._round(n * this.step);
}
_renderSymbols() {
const ltr = isLTR(this);
return html `
${repeat(range(this.max), (i) => i, (i) => {
const { forward, backward } = this._clipSymbol(i, ltr);
return html `
<igc-rating-symbol exportparts="symbol, full, empty">
<igc-icon
collection="default"
name="star_filled"
style=${styleMap({ clipPath: forward })}
></igc-icon>
<igc-icon
collection="default"
name="star_outlined"
style=${styleMap({ clipPath: backward })}
slot="empty"
></igc-icon>
</igc-rating-symbol>
`;
})}
`;
}
render() {
const hoverActive = this.hoverPreview && this._isInteractive;
const valueLabelHidden = !this._slots.hasAssignedNodes('value-label', true);
return html `
<label part="label" id="rating-label" ?hidden=${!this.label}
>${this.label}</label
>
<div
part="base"
role="slider"
tabindex=${this.disabled ? -1 : 0}
aria-labelledby="rating-label"
aria-valuemin="0"
aria-valuenow=${this.value}
aria-valuemax=${this.max}
aria-valuetext=${this._valueText}
>
<div
aria-hidden="true"
part="symbols"
=${bindIf(this._isInteractive, this._handleClick)}
=${bindIf(hoverActive, this._handleHoverEnabled)}
=${bindIf(hoverActive, this._handleHoverDisabled)}
=${bindIf(hoverActive, this._handleHoverDisabled)}
=${bindIf(hoverActive, this._handlePointerMove)}
>
<slot name="symbol">
${this._hasProjectedSymbols ? nothing : this._renderSymbols()}
</slot>
</div>
<label part="value-label" ?hidden=${valueLabelHidden}>
<slot name="value-label"></slot>
</label>
</div>
`;
}
}
__decorate([
query('[part="symbols"]', true)
], IgcRatingComponent.prototype, "_container", void 0);
__decorate([
state()
], IgcRatingComponent.prototype, "_hoverValue", void 0);
__decorate([
state()
], IgcRatingComponent.prototype, "_hoverState", void 0);
__decorate([
property({ type: Number })
], IgcRatingComponent.prototype, "max", null);
__decorate([
property({ type: Number })
], IgcRatingComponent.prototype, "step", null);
__decorate([
property()
], IgcRatingComponent.prototype, "label", void 0);
__decorate([
property({ attribute: 'value-format' })
], IgcRatingComponent.prototype, "valueFormat", void 0);
__decorate([
property({ type: Number })
], IgcRatingComponent.prototype, "value", null);
__decorate([
property({ type: Boolean, reflect: true, attribute: 'hover-preview' })
], IgcRatingComponent.prototype, "hoverPreview", void 0);
__decorate([
property({ type: Boolean, reflect: true, attribute: 'readonly' })
], IgcRatingComponent.prototype, "readOnly", void 0);
__decorate([
property({ type: Boolean, reflect: true })
], IgcRatingComponent.prototype, "single", null);
__decorate([
property({ type: Boolean, reflect: true, attribute: 'allow-reset' })
], IgcRatingComponent.prototype, "allowReset", void 0);
//# sourceMappingURL=rating.js.map