137 lines
3.7 KiB
JavaScript
137 lines
3.7 KiB
JavaScript
/**
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* @license
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* Copyright (C) 2016 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 '@polymer/paper-button/paper-button.js';
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import '../../../styles/shared-styles.js';
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import {GestureEventListeners} from '@polymer/polymer/lib/mixins/gesture-event-listeners.js';
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import {LegacyElementMixin} from '@polymer/polymer/lib/legacy/legacy-element-mixin.js';
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import {PolymerElement} from '@polymer/polymer/polymer-element.js';
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import {htmlTemplate} from './gr-button_html.js';
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import {TooltipMixin} from '../../../mixins/gr-tooltip-mixin/gr-tooltip-mixin.js';
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import {KeyboardShortcutMixin} from '../../../mixins/keyboard-shortcut-mixin/keyboard-shortcut-mixin.js';
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import {getEventPath} from '../../../utils/dom-util.js';
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import {appContext} from '../../../services/app-context.js';
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/**
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* @extends PolymerElement
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*/
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class GrButton extends KeyboardShortcutMixin(TooltipMixin(GestureEventListeners(
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LegacyElementMixin(
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PolymerElement)))) {
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static get template() { return htmlTemplate; }
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static get is() { return 'gr-button'; }
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static get properties() {
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return {
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tooltip: String,
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downArrow: {
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type: Boolean,
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reflectToAttribute: true,
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},
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link: {
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type: Boolean,
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value: false,
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reflectToAttribute: true,
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},
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disabled: {
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type: Boolean,
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observer: '_disabledChanged',
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reflectToAttribute: true,
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},
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noUppercase: {
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type: Boolean,
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value: false,
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},
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loading: {
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type: Boolean,
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value: false,
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reflectToAttribute: true,
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},
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ariaDisabled: {
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type: Boolean,
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computed: '_computeDisabled(disabled, loading)',
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reflectToAttribute: true,
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},
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_disabled: {
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type: Boolean,
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computed: '_computeDisabled(disabled, loading)',
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},
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_initialTabindex: {
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type: String,
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value: '0',
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},
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};
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}
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constructor() {
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super();
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this.reporting = appContext.reportingService;
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}
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/** @override */
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created() {
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super.created();
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this._initialTabindex = this.getAttribute('tabindex') || '0';
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this.addEventListener('click', e => this._handleAction(e));
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this.addEventListener('keydown',
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e => this._handleKeydown(e));
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}
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/** @override */
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ready() {
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super.ready();
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this._ensureAttribute('role', 'button');
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this._ensureAttribute('tabindex', '0');
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}
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_handleAction(e) {
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if (this._disabled) {
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e.preventDefault();
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e.stopPropagation();
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e.stopImmediatePropagation();
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return;
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}
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this.reporting.reportInteraction('button-click',
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{path: getEventPath(e)});
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}
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_disabledChanged(disabled) {
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this.setAttribute('tabindex', disabled ? '-1' : this._initialTabindex);
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this.updateStyles();
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}
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_computeDisabled(disabled, loading) {
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return disabled || loading;
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}
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_handleKeydown(e) {
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if (this.modifierPressed(e)) { return; }
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e = this.getKeyboardEvent(e);
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// Handle `enter`, `space`.
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if (e.keyCode === 13 || e.keyCode === 32) {
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e.preventDefault();
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e.stopPropagation();
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this.click();
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}
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}
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}
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customElements.define(GrButton.is, GrButton);
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