159 lines
3.9 KiB
TypeScript
159 lines
3.9 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-dropdown/iron-dropdown';
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import '@polymer/paper-item/paper-item';
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import '@polymer/paper-listbox/paper-listbox';
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import '../../../styles/shared-styles';
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import '../gr-button/gr-button';
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import '../gr-date-formatter/gr-date-formatter';
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import '../gr-select/gr-select';
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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-dropdown-list_html';
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import {customElement, property, observe} from '@polymer/decorators';
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import {IronDropdownElement} from '@polymer/iron-dropdown/iron-dropdown';
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import {Timestamp} from '../../../types/common';
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/**
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* fired when the selected value of the dropdown changes
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*
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* @event {change}
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*/
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/**
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* Requred values are text and value. mobileText and triggerText will
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* fall back to text if not provided.
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*
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* If bottomText is not provided, nothing will display on the second
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* line.
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*
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* If date is not provided, nothing will be displayed in its place.
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*/
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export interface DropdownItem {
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text: string;
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value: string | number;
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bottomText?: string;
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triggerText?: string;
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mobileText?: string;
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date?: Timestamp;
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disabled?: boolean;
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}
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export interface GrDropdownList {
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$: {
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dropdown: IronDropdownElement;
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};
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}
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export interface ValueChangeDetail {
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value: string;
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}
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export type DropDownValueChangeEvent = CustomEvent<ValueChangeDetail>;
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@customElement('gr-dropdown-list')
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export class GrDropdownList 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 the selected value changes
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*
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* @event value-change
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*
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* @property {string|number} value
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*/
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@property({type: Number})
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initialCount = 75;
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@property({type: Object})
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items?: DropdownItem[];
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@property({type: String})
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text?: string;
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@property({type: Boolean})
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disabled = false;
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@property({type: String, notify: true})
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value?: string;
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@property({type: Boolean})
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showCopyForTriggerText = false;
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/**
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* Handle a click on the iron-dropdown element.
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*/
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_handleDropdownClick() {
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// async is needed so that that the click event is fired before the
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// dropdown closes (This was a bug for touch devices).
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this.async(() => {
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this.$.dropdown.close();
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}, 1);
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}
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/**
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* Handle a click on the button to open the dropdown.
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*/
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_showDropdownTapHandler() {
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this.open();
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}
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/**
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* Open the dropdown.
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*/
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open() {
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this.$.dropdown.open();
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}
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_computeMobileText(item: DropdownItem) {
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return item.mobileText ? item.mobileText : item.text;
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}
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@observe('value', 'items')
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_handleValueChange(value?: string, items?: DropdownItem[]) {
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if (!value || !items) {
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return;
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}
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const selectedObj = items.find(item => `${item.value}` === `${value}`);
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if (!selectedObj) {
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return;
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}
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this.text = selectedObj.triggerText
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? selectedObj.triggerText
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: selectedObj.text;
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const detail: ValueChangeDetail = {value};
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this.dispatchEvent(
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new CustomEvent('value-change', {
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detail,
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bubbles: false,
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})
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);
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}
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}
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declare global {
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interface HTMLElementTagNameMap {
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'gr-dropdown-list': GrDropdownList;
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}
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}
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