/**
 * 3D Foundation Project
 * Copyright 2019 Smithsonian Institution
 *
 * 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 CVAssetManager from "../../components/CVAssetManager" ; import SystemView , { customElement , html } from "@ff/scene/ui/SystemView" ; import SceneView from "../SceneView" ; import "../Spinner" ; @ customElement ( "sv-content-view" ) export default class ContentView extends SystemView { protected sceneView : SceneView = null ; protected get assetManager ( ) { return this . system . getMainComponent ( CVAssetManager ) ; } protected firstConnected ( ) { this . classList . add ( "sv-content-view" ) ; this . sceneView = new SceneView ( this . system ) ; } protected connected ( ) { this . assetManager . outs . busy . on ( "value" , this . performUpdate , this ) ; } protected disconnected ( ) { this . assetManager . outs . busy . off ( "value" , this . performUpdate , this ) ; } protected render ( ) { const isLoading = this . assetManager . outs . busy . value ; return html `${ this . sceneView }
            <sv-spinner ?visible=${ isLoading }></sv-spinner>` ; } }