blob: e061e93dd86b12d23152afcf262273e1fb5a436d [file] [log] [blame]
/**
* @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 '../../../scripts/bundled-polymer.js';
import {GestureEventListeners} from '@polymer/polymer/lib/mixins/gesture-event-listeners.js';
import {LegacyElementMixin} from '@polymer/polymer/lib/legacy/legacy-element-mixin.js';
import {PolymerElement} from '@polymer/polymer/polymer-element.js';
const $_documentContainer = document.createElement('template');
$_documentContainer.innerHTML = `<dom-module id="gr-select">
<slot></slot>
</dom-module>`;
document.head.appendChild($_documentContainer.content);
/**
* @extends Polymer.Element
*/
class GrSelect extends GestureEventListeners(
LegacyElementMixin(PolymerElement)) {
static get is() { return 'gr-select'; }
static get properties() {
return {
bindValue: {
type: String,
notify: true,
observer: '_updateValue',
},
};
}
get nativeSelect() {
// gr-select is not a shadow component
// TODO(taoalpha): maybe we should convert
// it into a shadow dom component instead
return this.querySelector('select');
}
_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(() => {
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;
}
}
}
customElements.define(GrSelect.is, GrSelect);