150 lines
3.7 KiB
TypeScript
150 lines
3.7 KiB
TypeScript
/**
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* @license
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* Copyright (C) 2017 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/iron-input/iron-input';
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import '@polymer/iron-icon/iron-icon';
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import '../../../styles/shared-styles';
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import '../gr-button/gr-button';
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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-list-view_html';
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import {encodeURL, getBaseUrl} from '../../../utils/url-util';
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import {page} from '../../../utils/page-wrapper-utils';
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import {property, observe, customElement} from '@polymer/decorators';
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const REQUEST_DEBOUNCE_INTERVAL_MS = 200;
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declare global {
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interface HTMLElementTagNameMap {
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'gr-list-view': GrListView;
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}
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}
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@customElement('gr-list-view')
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class GrListView 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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@property({type: Boolean})
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createNew?: boolean;
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@property({type: Array})
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items?: unknown[];
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@property({type: Number})
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itemsPerPage = 25;
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@property({type: String})
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filter?: string;
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@property({type: Number})
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offset?: number;
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@property({type: Boolean})
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loading?: boolean;
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@property({type: String})
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path?: string;
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/** @override */
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detached() {
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super.detached();
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this.cancelDebouncer('reload');
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}
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@observe('filter')
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_filterChanged(newFilter: string, oldFilter: string) {
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if (!newFilter && !oldFilter) {
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return;
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}
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this._debounceReload(newFilter);
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}
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_debounceReload(filter: string) {
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this.debounce(
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'reload',
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() => {
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if (this.path) {
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if (filter) {
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return page.show(
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`${this.path}/q/filter:` + encodeURL(filter, false)
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);
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}
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return page.show(this.path);
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}
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},
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REQUEST_DEBOUNCE_INTERVAL_MS
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);
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}
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_createNewItem() {
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this.dispatchEvent(
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new CustomEvent('create-clicked', {
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composed: true,
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bubbles: true,
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})
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);
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}
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_computeNavLink(
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offset: number,
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direction: number,
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itemsPerPage: number,
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filter: string,
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path: string
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) {
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// Offset could be a string when passed from the router.
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offset = +(offset || 0);
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const newOffset = Math.max(0, offset + itemsPerPage * direction);
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let href = getBaseUrl() + path;
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if (filter) {
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href += '/q/filter:' + encodeURL(filter, false);
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}
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if (newOffset > 0) {
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href += `,${newOffset}`;
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}
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return href;
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}
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_computeCreateClass(createNew?: boolean) {
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return createNew ? 'show' : '';
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}
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_hidePrevArrow(loading?: boolean, offset?: number) {
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return loading || offset === 0;
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}
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_hideNextArrow(loading?: boolean, items?: unknown[]) {
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if (loading || !items || !items.length) {
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return true;
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}
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const lastPage = items.length < this.itemsPerPage + 1;
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return lastPage;
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}
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// TODO: fix offset (including itemsPerPage)
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// to either support a decimal or make it go to the nearest
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// whole number (e.g 3).
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_computePage(offset: number, itemsPerPage: number) {
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return offset / itemsPerPage + 1;
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}
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}
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