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Meter.ts
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Meter.ts
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/*
Copyright 2020 Adobe. All rights reserved.
This file is licensed to you under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License. You may obtain a copy
of the License at http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under
the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
OF ANY KIND, either express or implied. See the License for the specific language
governing permissions and limitations under the License.
*/
import {
CSSResultArray,
html,
PropertyValues,
SizedMixin,
SpectrumElement,
TemplateResult,
} from '@spectrum-web-components/base';
import {
property,
query,
} from '@spectrum-web-components/base/src/decorators.js';
import { getLabelFromSlot } from '@spectrum-web-components/shared/src/get-label-from-slot.js';
import { ObserveSlotText } from '@spectrum-web-components/shared/src/observe-slot-text.js';
import { LanguageResolutionController } from '@spectrum-web-components/reactive-controllers/src/LanguageResolution.js';
import '@spectrum-web-components/field-label/sp-field-label.js';
import styles from './meter.css.js';
/**
* @element sp-meter
*
* @slot - text labeling the Meter
*/
export class Meter extends SizedMixin(ObserveSlotText(SpectrumElement, '')) {
public static override get styles(): CSSResultArray {
return [styles];
}
@property({ type: Number })
public progress = 0;
@property({ type: Boolean, reflect: true, attribute: 'over-background' })
public overBackground = false;
@property({ type: Boolean, reflect: true })
public notice = false;
@property({ type: Boolean, reflect: true })
public negative = false;
@property({ type: Boolean, reflect: true })
public positive = false;
@property({ type: String, reflect: true })
public label = '';
@query('slot')
private slotEl!: HTMLSlotElement;
private languageResolver = new LanguageResolutionController(this);
@property({ type: Boolean, reflect: true, attribute: 'side-label' })
// called sideLabel
public sideLabel = false;
@property({ type: String, reflect: true })
public static: 'white' | undefined;
protected override render(): TemplateResult {
return html`
<sp-field-label size=${this.size} class="label">
${this.slotHasContent ? html`` : this.label}
<slot @slotchange=${this.handleSlotchange}>${this.label}</slot>
</sp-field-label>
<sp-field-label size=${this.size} class="percentage">
${new Intl.NumberFormat(this.languageResolver.language, {
style: 'percent',
unitDisplay: 'narrow',
}).format(this.progress / 100)}
</sp-field-label>
<div class="track">
<div
class="fill"
style="transform: scaleX(calc(${this.progress} / 100));"
></div>
</div>
`;
}
protected handleSlotchange(): void {
const labelFromSlot = getLabelFromSlot(this.label, this.slotEl);
if (labelFromSlot) {
this.label = labelFromSlot;
}
}
protected override firstUpdated(changes: PropertyValues): void {
super.firstUpdated(changes);
this.setAttribute('role', 'meter progressbar');
}
protected override updated(changes: PropertyValues): void {
super.updated(changes);
if (changes.has('progress')) {
this.setAttribute('aria-valuenow', '' + this.progress);
}
if (changes.has('label')) {
if (this.label.length) {
this.setAttribute('aria-label', this.label);
} else {
this.removeAttribute('aria-label');
}
}
}
}