blob: 5437ca5414609b5be1d9162cda96018ad4ece03d [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 {IronOverlayBehaviorImpl, IronOverlayBehavior} from '@polymer/iron-overlay-behavior/iron-overlay-behavior.js';
import '../../../styles/shared-styles.js';
import {mixinBehaviors} from '@polymer/polymer/lib/legacy/class.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';
import {htmlTemplate} from './gr-overlay_html.js';
const AWAIT_MAX_ITERS = 10;
const AWAIT_STEP = 5;
const BREAKPOINT_FULLSCREEN_OVERLAY = '50em';
/**
* @extends PolymerElement
*/
class GrOverlay extends mixinBehaviors( [
IronOverlayBehavior,
], GestureEventListeners(
LegacyElementMixin(
PolymerElement))) {
static get template() { return htmlTemplate; }
static get is() { return 'gr-overlay'; }
/**
* Fired when a fullscreen overlay is closed
*
* @event fullscreen-overlay-closed
*/
/**
* Fired when an overlay is opened in full screen mode
*
* @event fullscreen-overlay-opened
*/
static get properties() {
return {
_fullScreenOpen: {
type: Boolean,
value: false,
},
};
}
/** @override */
created() {
super.created();
this.addEventListener('iron-overlay-closed',
() => this._close());
this.addEventListener('iron-overlay-cancelled',
() => this._close());
}
open(...args) {
return new Promise((resolve, reject) => {
IronOverlayBehaviorImpl.open.apply(this, args);
if (this._isMobile()) {
this.dispatchEvent(new CustomEvent('fullscreen-overlay-opened', {
composed: true, bubbles: true,
}));
this._fullScreenOpen = true;
}
this._awaitOpen(resolve, reject);
});
}
_isMobile() {
return window.matchMedia(`(max-width: ${BREAKPOINT_FULLSCREEN_OVERLAY})`);
}
_close() {
if (this._fullScreenOpen) {
this.dispatchEvent(new CustomEvent('fullscreen-overlay-closed', {
composed: true, bubbles: true,
}));
this._fullScreenOpen = false;
}
}
/**
* Override the focus stops that iron-overlay-behavior tries to find.
*/
setFocusStops(stops) {
this.__firstFocusableNode = stops.start;
this.__lastFocusableNode = stops.end;
}
/**
* NOTE: (wyatta) Slightly hacky way to listen to the overlay actually
* opening. Eventually replace with a direct way to listen to the overlay.
*/
_awaitOpen(fn, reject) {
let iters = 0;
const step = () => {
this.async(() => {
if (this.style.display !== 'none') {
fn.call(this);
} else if (iters++ < AWAIT_MAX_ITERS) {
step.call(this);
} else {
reject(new Error('gr-overlay _awaitOpen failed to resolve'));
}
}, AWAIT_STEP);
};
step.call(this);
}
_id() {
return this.getAttribute('id') || 'global';
}
}
customElements.define(GrOverlay.is, GrOverlay);