blob: 1ecaf7fece46a1a93d82358ef1e2e611d77f1c71 [file] [log] [blame]
/**
* @license
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed 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 CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import '../gr-icons/gr-icons';
import '../../../styles/shared-styles';
import {GestureEventListeners} from '@polymer/polymer/lib/mixins/gesture-event-listeners';
import {LegacyElementMixin} from '@polymer/polymer/lib/legacy/legacy-element-mixin';
import {PolymerElement} from '@polymer/polymer/polymer-element';
import {htmlTemplate} from './gr-change-star_html';
import {customElement, property} from '@polymer/decorators';
import {ChangeInfo} from '../../../types/common';
import {KeyboardShortcutMixin} from '../../../mixins/keyboard-shortcut-mixin/keyboard-shortcut-mixin';
declare global {
interface HTMLElementTagNameMap {
'gr-change-star': GrChangeStar;
}
}
export interface ChangeStarToggleStarDetail {
change: ChangeInfo;
starred: boolean;
}
@customElement('gr-change-star')
export class GrChangeStar extends KeyboardShortcutMixin(
GestureEventListeners(LegacyElementMixin(PolymerElement))
) {
static get template() {
return htmlTemplate;
}
/**
* Fired when star state is toggled.
*
* @event toggle-star
*/
@property({type: Object, notify: true})
change?: ChangeInfo;
_computeStarClass(starred: boolean) {
return starred ? 'active' : '';
}
_computeStarIcon(starred: boolean) {
// Hollow star is used to indicate inactive state.
return `gr-icons:star${starred ? '' : '-border'}`;
}
_computeAriaLabel(starred: boolean) {
return starred ? 'Unstar this change' : 'Star this change';
}
toggleStar() {
// Note: change should always be defined when use gr-change-star
// but since we don't have a good way to enforce usage to always
// set the change, we still check it here.
if (!this.change) {
return;
}
const newVal = !this.change.starred;
this.set('change.starred', newVal);
const detail: ChangeStarToggleStarDetail = {
change: this.change,
starred: newVal,
};
this.dispatchEvent(
new CustomEvent('toggle-star', {
bubbles: true,
composed: true,
detail,
})
);
}
}