refactored React string refs into React.createRef() api

inspector/src/components/actionTabs/lines/fileButtonLineComponent.tsx

@@ -9,9 +9,12 @@ interface IFileButtonLineComponentProps {
 export class FileButtonLineComponent extends React.Component<IFileButtonLineComponentProps> {
     private static _IDGenerator = 0;
     private _id = FileButtonLineComponent._IDGenerator++;
+    private uploadInputRef: React.RefObject<HTMLInputElement>;
+
 
     constructor(props: IFileButtonLineComponentProps) {
         super(props);
+        this.uploadInputRef = React.createRef();
     }
 
     onChange(evt: any) {
@@ -29,7 +32,7 @@ export class FileButtonLineComponent extends React.Component<IFileButtonLineComp
                 <label htmlFor={"file-upload" + this._id} className="file-upload">
                     {this.props.label}
                 </label>
-                <input ref="upload" id={"file-upload" + this._id} type="file" accept={this.props.accept} onChange={evt => this.onChange(evt)} />
+                <input ref={this.uploadInputRef} id={"file-upload" + this._id} type="file" accept={this.props.accept} onChange={evt => this.onChange(evt)} />
             </div>
         );
     }

inspector/src/components/actionTabs/lines/fileMultipleButtonLineComponent.tsx

@@ -9,9 +9,12 @@ interface IFileMultipleButtonLineComponentProps {
 export class FileMultipleButtonLineComponent extends React.Component<IFileMultipleButtonLineComponentProps> {
     private static _IDGenerator = 0;
     private _id = FileMultipleButtonLineComponent._IDGenerator++;
+    private uploadInputRef: React.RefObject<HTMLInputElement>;
+
 
     constructor(props: IFileMultipleButtonLineComponentProps) {
         super(props);
+        this.uploadInputRef = React.createRef();
     }
 
     onChange(evt: any) {
@@ -29,7 +32,7 @@ export class FileMultipleButtonLineComponent extends React.Component<IFileMultip
                 <label htmlFor={"file-upload" + this._id} className="file-upload">
                     {this.props.label}
                 </label>
-                <input ref="upload" id={"file-upload" + this._id} type="file" accept={this.props.accept} onChange={evt => this.onChange(evt)} multiple />
+                <input ref={this.uploadInputRef} id={"file-upload" + this._id} type="file" accept={this.props.accept} onChange={evt => this.onChange(evt)} multiple />
             </div>
         );
     }

inspector/src/components/actionTabs/lines/textureLineComponent.tsx

@@ -27,6 +27,8 @@ enum ChannelToDisplay {
 }
 
 export class TextureLineComponent extends React.Component<ITextureLineComponentProps, { channel: ChannelToDisplay, face: number }> {
+    private canvasRef: React.RefObject<HTMLCanvasElement>;
+
     constructor(props: ITextureLineComponentProps) {
         super(props);
 
@@ -82,7 +84,7 @@ export class TextureLineComponent extends React.Component<ITextureLineComponentP
             return;
         }
 
-        const previewCanvas = this.refs.canvas as HTMLCanvasElement;
+        const previewCanvas = this.canvasRef.current as HTMLCanvasElement;
 
         if (this.props.globalState) {
             this.props.globalState.blockMutationUpdates = true;
@@ -208,7 +210,7 @@ export class TextureLineComponent extends React.Component<ITextureLineComponentP
                             <button className={this.state.channel === ChannelToDisplay.All ? "all command selected" : "all command"} onClick={() => this.setState({ channel: ChannelToDisplay.All })}>ALL</button>
                         </div>
                     }
-                    <canvas ref="canvas" className="preview" />
+                    <canvas ref={this.canvasRef} className="preview" />
                 </div>
                 {
                     texture.isRenderTarget &&

inspector/src/components/actionTabs/tabs/propertyGrids/animationGroupPropertyGridComponent.tsx

@@ -25,6 +25,7 @@ export class AnimationGroupGridComponent extends React.Component<IAnimationGroup
     private _onAnimationGroupPlayObserver: Nullable<Observer<AnimationGroup>>;
     private _onAnimationGroupPauseObserver: Nullable<Observer<AnimationGroup>>;
     private _onBeforeRenderObserver: Nullable<Observer<Scene>>;
+    private timelineRef: React.RefObject<SliderLineComponent>;
 
     constructor(props: IAnimationGroupGridComponentProps) {
         super(props);
@@ -130,7 +131,7 @@ export class AnimationGroupGridComponent extends React.Component<IAnimationGroup
                 <LineContainerComponent globalState={this.props.globalState} title="CONTROLS">
                     <ButtonLineComponent label={playButtonText} onClick={() => this.playOrPause()} />
                     <SliderLineComponent label="Speed ratio" minimum={0} maximum={10} step={0.1} target={animationGroup} propertyName="speedRatio" onPropertyChangedObservable={this.props.onPropertyChangedObservable} />
-                    <SliderLineComponent ref="timeline" label="Current frame" minimum={animationGroup.from} maximum={animationGroup.to} step={(animationGroup.to - animationGroup.from) / 1000.0} directValue={this.state.currentFrame} onInput={value => this.onCurrentFrameChange(value)} />
+                    <SliderLineComponent ref={this.timelineRef} label="Current frame" minimum={animationGroup.from} maximum={animationGroup.to} step={(animationGroup.to - animationGroup.from) / 1000.0} directValue={this.state.currentFrame} onInput={value => this.onCurrentFrameChange(value)} />
                 </LineContainerComponent>
                 <LineContainerComponent globalState={this.props.globalState} title="INFOS">
                     <TextLineComponent label="Animation count" value={animationGroup.targetedAnimations.length.toString()} />

inspector/src/components/actionTabs/tabs/propertyGrids/animationPropertyGridComponent.tsx

@@ -38,6 +38,8 @@ export class AnimationGridComponent extends React.Component<IAnimationGridCompon
     private _runningAnimatable: Nullable<Animatable>;
     private _onBeforeRenderObserver: Nullable<Observer<Scene>>;
     private _isPlaying = false;
+    private timelineRef: React.RefObject<SliderLineComponent>;
+
 
     constructor(props: IAnimationGridComponentProps) {
         super(props);
@@ -182,7 +184,7 @@ export class AnimationGridComponent extends React.Component<IAnimationGridCompon
                         <ButtonLineComponent label={this._isPlaying ? "Stop" : "Play"} onClick={() => this.playOrPause()} />
                         {
                             this._isPlaying &&
-                            <SliderLineComponent ref="timeline" label="Current frame" minimum={this._animationControl.from} maximum={this._animationControl.to}
+                            <SliderLineComponent ref={this.timelineRef} label="Current frame" minimum={this._animationControl.from} maximum={this._animationControl.to}
                                 step={(this._animationControl.to - this._animationControl.from) / 1000.0} directValue={this.state.currentFrame}
                                 onInput={value => this.onCurrentFrameChange(value)}
                             />

inspector/src/components/actionTabs/tabs/propertyGrids/materials/texturePropertyGridComponent.tsx

@@ -36,6 +36,8 @@ interface ITexturePropertyGridComponentProps {
 export class TexturePropertyGridComponent extends React.Component<ITexturePropertyGridComponentProps> {
 
     private _adtInstrumentation: Nullable<AdvancedDynamicTextureInstrumentation>;
+    private textureLineRef: React.RefObject<TextureLineComponent>;
+    
 
     constructor(props: ITexturePropertyGridComponentProps) {
         super(props);
@@ -84,7 +86,7 @@ export class TexturePropertyGridComponent extends React.Component<ITextureProper
 
     foreceRefresh() {
         this.forceUpdate();
-        (this.refs["textureLine"] as TextureLineComponent).updatePreview();
+        (this.textureLineRef.current as TextureLineComponent).updatePreview();
     }
 
     render() {
@@ -128,7 +130,7 @@ export class TexturePropertyGridComponent extends React.Component<ITextureProper
         return (
             <div className="pane">
                 <LineContainerComponent globalState={this.props.globalState} title="PREVIEW">
-                    <TextureLineComponent ref="textureLine" texture={texture} width={256} height={256} globalState={this.props.globalState} />
+                    <TextureLineComponent ref={this.textureLineRef} texture={texture} width={256} height={256} globalState={this.props.globalState} />
                     <FileButtonLineComponent label="Load texture from file" onClick={(file) => this.updateTexture(file)} accept=".jpg, .png, .tga, .dds, .env" />
                     <TextInputLineComponent label="URL" value={textureUrl} lockObject={this.props.lockObject} onChange={url => {
                         (texture as Texture).updateURL(url);

inspector/src/components/embedHost/embedHostComponent.tsx

@@ -25,23 +25,26 @@ interface IEmbedHostComponentProps {
 
 export class EmbedHostComponent extends React.Component<IEmbedHostComponentProps> {
     private _once = true;
+    private splitRef: React.RefObject<HTMLDivElement>;
+    private topPartRef: React.RefObject<HTMLDivElement>;
+    private bottomPartRef: React.RefObject<HTMLDivElement>;
 
     constructor(props: IEmbedHostComponentProps) {
         super(props);
     }
 
     componentDidMount() {
-        const container = this.refs.split;
+        const container = this.splitRef.current;
 
         if (!container) {
             return;
         }
 
-        Split([this.refs.topPart, this.refs.bottomPart], {
+        Split([this.topPartRef.current, this.bottomPartRef.current], {
             direction: "vertical",
             minSize: [200, 200],
             gutterSize: 4
-        })
+        });
     }
 
     renderContent() {
@@ -66,15 +69,15 @@ export class EmbedHostComponent extends React.Component<IEmbedHostComponentProps
         }
 
         return (
-            <div ref="split" id="split" className="noPopup">
-                <div id="topPart" ref="topPart">
+            <div ref={this.splitRef} id="split" className="noPopup">
+                <div id="topPart" ref={this.topPartRef}>
                     <SceneExplorerComponent scene={this.props.scene}
                         extensibilityGroups={this.props.extensibilityGroups}
                         globalState={this.props.globalState}
                         popupMode={true}
                         noHeader={true} />
                 </div>
-                <div id="bottomPart" ref="bottomPart" style={{ marginTop: "4px", overflow: "hidden" }}>
+                <div id="bottomPart" ref={this.bottomPartRef} style={{ marginTop: "4px", overflow: "hidden" }}>
                     <ActionTabsComponent scene={this.props.scene}
                         globalState={this.props.globalState}
                         popupMode={true}
@@ -82,7 +85,7 @@ export class EmbedHostComponent extends React.Component<IEmbedHostComponentProps
                         initialTab={this.props.initialTab} />
                 </div>
             </div>
-        )
+        );
     }
 
     render() {

inspector/src/components/sceneExplorer/extensionsComponent.tsx

@@ -11,6 +11,7 @@ interface IExtensionsComponentProps {
 
 export class ExtensionsComponent extends React.Component<IExtensionsComponentProps, { popupVisible: boolean }> {
     private _popup: Nullable<HTMLDivElement>;
+    private extensionRef: React.RefObject<HTMLDivElement>;
 
     constructor(props: IExtensionsComponentProps) {
         super(props);
@@ -54,7 +55,7 @@ export class ExtensionsComponent extends React.Component<IExtensionsComponentPro
         }
 
         return (
-            <div ref="extensions" className="extensions" onClick={() => this.showPopup()}>
+            <div ref={this.extensionRef} className="extensions" onClick={() => this.showPopup()}>
                 <div title="Additional options" className="icon">
                     <FontAwesomeIcon icon={faEllipsisH} />
                 </div>

inspector/src/components/sceneExplorer/sceneExplorerComponent.tsx

@@ -57,6 +57,8 @@ interface ISceneExplorerComponentProps {
 export class SceneExplorerComponent extends React.Component<ISceneExplorerComponentProps, { filter: Nullable<string>, selectedEntity: any, scene: Scene }> {
     private _onSelectionChangeObserver: Nullable<Observer<any>>;
     private _onNewSceneAddedObserver: Nullable<Observer<Scene>>;
+    private sceneExplorerRef: React.RefObject<Resizable>;
+
 
     private _once = true;
     private _hooked = false;
@@ -390,7 +392,7 @@ export class SceneExplorerComponent extends React.Component<ISceneExplorerCompon
         }
 
         return (
-            <Resizable tabIndex={-1} id="sceneExplorer" ref="sceneExplorer" size={{ height: "100%" }} minWidth={300} maxWidth={600} minHeight="100%" enable={{ top: false, right: true, bottom: false, left: false, topRight: false, bottomRight: false, bottomLeft: false, topLeft: false }} onKeyDown={(keyEvent) => this.processKeys(keyEvent)}>
+            <Resizable tabIndex={-1} id="sceneExplorer" ref={this.sceneExplorerRef} size={{ height: "100%" }} minWidth={300} maxWidth={600} minHeight="100%" enable={{ top: false, right: true, bottom: false, left: false, topRight: false, bottomRight: false, bottomLeft: false, topLeft: false }} onKeyDown={(keyEvent) => this.processKeys(keyEvent)}>
                 {
                     !this.props.noHeader &&
                     <HeaderComponent title="SCENE EXPLORER" noClose={this.props.noClose} noExpand={this.props.noExpand} noCommands={this.props.noCommands} onClose={() => this.onClose()} onPopup={() => this.onPopup()} />

nodeEditor/src/components/preview/previewMeshControlComponent.tsx

@@ -19,6 +19,7 @@ interface IPreviewMeshControlComponent {
 
 export class PreviewMeshControlComponent extends React.Component<IPreviewMeshControlComponent> {
     private colorInputRef: React.RefObject<HTMLInputElement>;
+    private filePickerRef: React.RefObject<HTMLInputElement>;
 
     constructor(props: IPreviewMeshControlComponent) {
         super(props);
@@ -103,13 +104,13 @@ export class PreviewMeshControlComponent extends React.Component<IPreviewMeshCon
                                 if (value !== PreviewMeshType.Custom + 1) {
                                     this.changeMeshType(value);
                                 } else {
-                                    (ReactDOM.findDOMNode(this.refs["file-picker"]) as HTMLElement).click();
+                                    this.filePickerRef.current?.click();
                                 }
                             }} />
                 <div style={{
                     display: "none"
                 }} title="Preview with a custom mesh" >
-                    <input ref="file-picker" id="file-picker" type="file" onChange={evt => this.useCustomMesh(evt)} accept=".gltf, .glb, .babylon, .obj"/>
+                    <input ref={this.filePickerRef} id="file-picker" type="file" onChange={evt => this.useCustomMesh(evt)} accept=".gltf, .glb, .babylon, .obj"/>
                 </div>
                 <div
                     title="Turn-table animation"

nodeEditor/src/sharedComponents/fileButtonLineComponent.tsx

@@ -7,6 +7,8 @@ interface IFileButtonLineComponentProps {
 }
 
 export class FileButtonLineComponent extends React.Component<IFileButtonLineComponentProps> {
+    private uploadRef: React.RefObject<HTMLInputElement>;
+
     constructor(props: IFileButtonLineComponentProps) {
         super(props);
     }
@@ -26,7 +28,7 @@ export class FileButtonLineComponent extends React.Component<IFileButtonLineComp
                 <label htmlFor="file-upload" className="file-upload">
                     {this.props.label}
                 </label>
-                <input ref="upload" id="file-upload" type="file" accept={this.props.accept} onChange={evt => this.onChange(evt)} />
+                <input ref={this.uploadRef} id="file-upload" type="file" accept={this.props.accept} onChange={evt => this.onChange(evt)} />
             </div>
         );
     }

nodeEditor/src/sharedComponents/textureLineComponent.tsx

@@ -16,14 +16,16 @@ interface ITextureLineComponentProps {
 }
 
 export interface ITextureLineComponentState {
-    displayRed: boolean, 
-    displayGreen: boolean, 
-    displayBlue: boolean, 
-    displayAlpha: boolean, 
-    face: number
+    displayRed: boolean;
+    displayGreen: boolean;
+    displayBlue: boolean;
+    displayAlpha: boolean;
+    face: number;
 }
 
 export class TextureLineComponent extends React.Component<ITextureLineComponentProps, ITextureLineComponentState> {
+    private canvasRef: React.RefObject<HTMLCanvasElement>;
+
     constructor(props: ITextureLineComponentProps) {
         super(props);
 
@@ -49,7 +51,7 @@ export class TextureLineComponent extends React.Component<ITextureLineComponentP
     }
 
     public updatePreview() {
-        TextureLineComponent.UpdatePreview(this.refs.canvas as HTMLCanvasElement, this.props.texture, this.props.width, this.state, undefined, this.props.globalState);
+        TextureLineComponent.UpdatePreview(this.canvasRef.current as HTMLCanvasElement, this.props.texture, this.props.width, this.state, undefined, this.props.globalState);
     }
 
     public static UpdatePreview(previewCanvas: HTMLCanvasElement, texture: BaseTexture, width: number, options: ITextureLineComponentState, onReady?: ()=> void, globalState?: any) {
@@ -206,7 +208,7 @@ export class TextureLineComponent extends React.Component<ITextureLineComponentP
                         <button className={this.state.displayRed && this.state.displayGreen ? "all command selected" : "all command"} onClick={() => this.setState({ displayRed: true, displayGreen: true, displayBlue: true, displayAlpha: true })}>ALL</button>
                     </div>
                 }
-                <canvas ref="canvas" className="preview" />
+                <canvas ref={this.canvasRef} className="preview" />
             </div>
         );
     }