diff --git a/src/vs/workbench/contrib/customEditor/browser/customEditorInput.ts b/src/vs/workbench/contrib/customEditor/browser/customEditorInput.ts
index 78cba9eadda0ab237004954822df5b16a43c0633..edf216c14d9ba0fcfcb07507f473060cebe62ee1 100644
--- a/src/vs/workbench/contrib/customEditor/browser/customEditorInput.ts
+++ b/src/vs/workbench/contrib/customEditor/browser/customEditorInput.ts
@@ -159,12 +159,16 @@ export class CustomFileEditorInput extends LazilyResolvedWebviewEditorInput {
 		return this.fileDialogService.pickFileToSave({});//this.getSaveDialogOptions(defaultUri, availableFileSystems));
 	}
 
-	public handleMove(groupId: GroupIdentifier, uri: URI, options?: ITextEditorOptions): IEditorInput | undefined {
-		const webview = assertIsDefined(this.takeOwnershipOfWebview());
-		return this.instantiationService.createInstance(CustomFileEditorInput,
-			uri,
-			this.viewType,
-			generateUuid(),
-			new Lazy(() => webview));
+	public handleMove(_groupId: GroupIdentifier, uri: URI, options?: ITextEditorOptions): IEditorInput | undefined {
+		const editorInfo = this.customEditorService.getCustomEditor(this.viewType);
+		if (editorInfo?.matches(uri)) {
+			const webview = assertIsDefined(this.takeOwnershipOfWebview());
+			return this.instantiationService.createInstance(CustomFileEditorInput,
+				uri,
+				this.viewType,
+				generateUuid(),
+				new Lazy(() => webview));
+		}
+		return undefined;
 	}
 }
diff --git a/src/vs/workbench/contrib/customEditor/browser/customEditors.ts b/src/vs/workbench/contrib/customEditor/browser/customEditors.ts
index 9e87a796443c973651612949239f810cd4fcbbe6..ea3e9dcdaf15c32fa4bc3bc864a6115171f1845b 100644
--- a/src/vs/workbench/contrib/customEditor/browser/customEditors.ts
+++ b/src/vs/workbench/contrib/customEditor/browser/customEditors.ts
@@ -4,7 +4,6 @@
  *--------------------------------------------------------------------------------------------*/
 
 import { coalesce, distinct, find, mergeSort } from 'vs/base/common/arrays';
-import * as glob from 'vs/base/common/glob';
 import { Lazy } from 'vs/base/common/lazy';
 import { Disposable } from 'vs/base/common/lifecycle';
 import { basename, isEqual } from 'vs/base/common/resources';
@@ -32,14 +31,14 @@ import { IWorkingCopyService } from 'vs/workbench/services/workingCopy/common/wo
 import { CustomFileEditorInput } from './customEditorInput';
 const defaultEditorId = 'default';
 
-const defaultEditorInfo: CustomEditorInfo = {
+const defaultEditorInfo = new CustomEditorInfo({
 	id: defaultEditorId,
 	displayName: nls.localize('promptOpenWith.defaultEditor', "VS Code's standard text editor"),
 	selector: [
 		{ filenamePattern: '*' }
 	],
 	priority: CustomEditorPriority.default,
-};
+});
 
 export class CustomEditorInfoStore {
 	private readonly contributedEditors = new Map<string, CustomEditorInfo>();
@@ -64,7 +63,7 @@ export class CustomEditorInfoStore {
 
 	public getContributedEditors(resource: URI): readonly CustomEditorInfo[] {
 		return Array.from(this.contributedEditors.values()).filter(customEditor =>
-			customEditor.selector.some(selector => matches(selector, resource)));
+			customEditor.matches(resource));
 	}
 }
 
@@ -97,12 +96,12 @@ export class CustomEditorService extends Disposable implements ICustomEditorServ
 
 			for (const extension of extensions) {
 				for (const webviewEditorContribution of extension.value) {
-					this._editorInfoStore.add({
+					this._editorInfoStore.add(new CustomEditorInfo({
 						id: webviewEditorContribution.viewType,
 						displayName: webviewEditorContribution.displayName,
 						selector: webviewEditorContribution.selector || [],
 						priority: webviewEditorContribution.priority || CustomEditorPriority.default,
-					});
+					}));
 				}
 			}
 			this.updateContexts();
@@ -127,6 +126,10 @@ export class CustomEditorService extends Disposable implements ICustomEditorServ
 		return { resource, viewType: activeInput.viewType };
 	}
 
+	public getCustomEditor(viewType: string): CustomEditorInfo | undefined {
+		return this._editorInfoStore.get(viewType);
+	}
+
 	public getContributedCustomEditors(resource: URI): readonly CustomEditorInfo[] {
 		return this._editorInfoStore.getContributedEditors(resource);
 	}
@@ -134,7 +137,7 @@ export class CustomEditorService extends Disposable implements ICustomEditorServ
 	public getUserConfiguredCustomEditors(resource: URI): readonly CustomEditorInfo[] {
 		const rawAssociations = this.configurationService.getValue<CustomEditorsAssociations>(customEditorsAssociationsKey) || [];
 		return coalesce(rawAssociations
-			.filter(association => matches(association, resource))
+			.filter(association => CustomEditorInfo.selectorMatches(association, resource))
 			.map(association => this._editorInfoStore.get(association.viewType)));
 	}
 
@@ -405,16 +408,6 @@ function priorityToRank(priority: CustomEditorPriority): number {
 	}
 }
 
-function matches(selector: CustomEditorSelector, resource: URI): boolean {
-	if (selector.filenamePattern) {
-		if (glob.match(selector.filenamePattern.toLowerCase(), basename(resource).toLowerCase())) {
-			return true;
-		}
-	}
-
-	return false;
-}
-
 registerThemingParticipant((theme, collector) => {
 	const shadow = theme.getColor(colorRegistry.scrollbarShadow);
 	if (shadow) {
diff --git a/src/vs/workbench/contrib/customEditor/common/customEditor.ts b/src/vs/workbench/contrib/customEditor/common/customEditor.ts
index 9162ab0e3d2e0efaa899e0a6f2b6d5160395a4bb..135ffc819b7eb5f2bc5d48635da546dae228b3db 100644
--- a/src/vs/workbench/contrib/customEditor/common/customEditor.ts
+++ b/src/vs/workbench/contrib/customEditor/common/customEditor.ts
@@ -4,11 +4,13 @@
  *--------------------------------------------------------------------------------------------*/
 
 import { Event } from 'vs/base/common/event';
+import * as glob from 'vs/base/common/glob';
+import { basename } from 'vs/base/common/resources';
 import { URI } from 'vs/base/common/uri';
 import { RawContextKey } from 'vs/platform/contextkey/common/contextkey';
 import { ITextEditorOptions } from 'vs/platform/editor/common/editor';
 import { createDecorator } from 'vs/platform/instantiation/common/instantiation';
-import { EditorInput, IEditor, ISaveOptions, IRevertOptions } from 'vs/workbench/common/editor';
+import { EditorInput, IEditor, IRevertOptions, ISaveOptions } from 'vs/workbench/common/editor';
 import { IEditorGroup } from 'vs/workbench/services/editor/common/editorGroupsService';
 import { IWorkingCopy } from 'vs/workbench/services/workingCopy/common/workingCopyService';
 
@@ -29,6 +31,7 @@ export interface ICustomEditorService {
 
 	readonly activeCustomEditor: ICustomEditor | undefined;
 
+	getCustomEditor(viewType: string): CustomEditorInfo | undefined;
 	getContributedCustomEditors(resource: URI): readonly CustomEditorInfo[];
 	getUserConfiguredCustomEditors(resource: URI): readonly CustomEditorInfo[];
 
@@ -87,9 +90,35 @@ export interface CustomEditorSelector {
 	readonly filenamePattern?: string;
 }
 
-export interface CustomEditorInfo {
-	readonly id: string;
-	readonly displayName: string;
-	readonly priority: CustomEditorPriority;
-	readonly selector: readonly CustomEditorSelector[];
+export class CustomEditorInfo {
+
+	public readonly id: string;
+	public readonly displayName: string;
+	public readonly priority: CustomEditorPriority;
+	public readonly selector: readonly CustomEditorSelector[];
+
+	constructor(descriptor: {
+		readonly id: string;
+		readonly displayName: string;
+		readonly priority: CustomEditorPriority;
+		readonly selector: readonly CustomEditorSelector[];
+	}) {
+		this.id = descriptor.id;
+		this.displayName = descriptor.displayName;
+		this.priority = descriptor.priority;
+		this.selector = descriptor.selector;
+	}
+
+	matches(resource: URI): boolean {
+		return this.selector.some(selector => CustomEditorInfo.selectorMatches(selector, resource));
+	}
+
+	static selectorMatches(selector: CustomEditorSelector, resource: URI): boolean {
+		if (selector.filenamePattern) {
+			if (glob.match(selector.filenamePattern.toLowerCase(), basename(resource).toLowerCase())) {
+				return true;
+			}
+		}
+		return false;
+	}
 }