80 lines
2.3 KiB
TypeScript
80 lines
2.3 KiB
TypeScript
/**
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* @license
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import '../gr-icons/gr-icons';
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import '../../../styles/shared-styles';
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import {GestureEventListeners} from '@polymer/polymer/lib/mixins/gesture-event-listeners';
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import {LegacyElementMixin} from '@polymer/polymer/lib/legacy/legacy-element-mixin';
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import {PolymerElement} from '@polymer/polymer/polymer-element';
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import {htmlTemplate} from './gr-change-star_html';
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import {customElement, property} from '@polymer/decorators';
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import {ChangeInfo} from '../../../types/common';
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declare global {
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interface HTMLElementTagNameMap {
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'gr-change-star': GrChangeStar;
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}
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}
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@customElement('gr-change-star')
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export class GrChangeStar extends GestureEventListeners(
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LegacyElementMixin(PolymerElement)
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) {
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static get template() {
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return htmlTemplate;
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}
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/**
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* Fired when star state is toggled.
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*
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* @event toggle-star
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*/
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@property({type: Object, notify: true})
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change?: ChangeInfo;
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_computeStarClass(starred: boolean) {
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return starred ? 'active' : '';
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}
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_computeStarIcon(starred: boolean) {
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// Hollow star is used to indicate inactive state.
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return `gr-icons:star${starred ? '' : '-border'}`;
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}
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_computeAriaLabel(starred: boolean) {
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return starred ? 'Unstar this change' : 'Star this change';
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}
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toggleStar() {
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// Note: change should always be defined when use gr-change-star
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// but since we don't have a good way to enforce usage to always
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// set the change, we still check it here.
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if (!this.change) {
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return;
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}
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const newVal = !this.change.starred;
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this.set('change.starred', newVal);
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this.dispatchEvent(
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new CustomEvent('toggle-star', {
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bubbles: true,
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composed: true,
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detail: {change: this.change, starred: newVal},
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})
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);
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}
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}
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