92 lines
2.8 KiB
TypeScript
92 lines
2.8 KiB
TypeScript
/**
|
|
* @license
|
|
* Copyright (C) 2016 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 {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 {html} from '@polymer/polymer/lib/utils/html-tag';
|
|
import {customElement, property, observe} from '@polymer/decorators';
|
|
|
|
declare global {
|
|
interface HTMLElementTagNameMap {
|
|
'gr-select': GrSelect;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* GrSelect `gr-select` component.
|
|
*/
|
|
@customElement('gr-select')
|
|
export class GrSelect extends GestureEventListeners(
|
|
LegacyElementMixin(PolymerElement)
|
|
) {
|
|
static get template() {
|
|
return html` <slot></slot> `;
|
|
}
|
|
|
|
@property({type: String, notify: true})
|
|
bindValue?: string;
|
|
|
|
get nativeSelect() {
|
|
// gr-select is not a shadow component
|
|
// TODO(taoalpha): maybe we should convert
|
|
// it into a shadow dom component instead
|
|
// TODO(TS): should warn if no `select` detected.
|
|
return this.querySelector('select')!;
|
|
}
|
|
|
|
@observe('bindValue')
|
|
_updateValue() {
|
|
// It's possible to have a value of 0.
|
|
if (this.bindValue !== undefined) {
|
|
// Set for chrome/safari so it happens instantly
|
|
this.nativeSelect.value = this.bindValue;
|
|
// Async needed for firefox to populate value. It was trying to do it
|
|
// before options from a dom-repeat were rendered previously.
|
|
// See https://bugs.chromium.org/p/gerrit/issues/detail?id=7735
|
|
this.async(() => {
|
|
// TODO(TS): maybe should check for undefined before assigning
|
|
// or fallback to ''
|
|
this.nativeSelect.value = this.bindValue!;
|
|
}, 1);
|
|
}
|
|
}
|
|
|
|
_valueChanged() {
|
|
this.bindValue = this.nativeSelect.value;
|
|
}
|
|
|
|
focus() {
|
|
this.nativeSelect.focus();
|
|
}
|
|
|
|
/** @override */
|
|
created() {
|
|
super.created();
|
|
this.addEventListener('change', () => this._valueChanged());
|
|
this.addEventListener('dom-change', () => this._updateValue());
|
|
}
|
|
|
|
/** @override */
|
|
ready() {
|
|
super.ready();
|
|
// If not set via the property, set bind-value to the element value.
|
|
if (this.bindValue === undefined && this.nativeSelect.options.length > 0) {
|
|
this.bindValue = this.nativeSelect.value;
|
|
}
|
|
}
|
|
}
|