Use _register

extensions/markdown-language-features/src/features/preview.ts

@@ -172,19 +172,19 @@ export class MarkdownPreview extends Disposable {
 		this._locked = locked;
 		this.editor = webview;
 
-		this.editor.onDidDispose(() => {
+		this._register(this.editor.onDidDispose(() => {
 			this.dispose();
-		}, null, this._disposables);
+		}));
 
-		this.editor.onDidChangeViewState(e => {
+		this._register(this.editor.onDidChangeViewState(e => {
 			this._onDidChangeViewStateEmitter.fire(e);
-		}, null, this._disposables);
+		}));
 
-		_contributionProvider.onContributionsChanged(() => {
+		this._register(_contributionProvider.onContributionsChanged(() => {
 			setImmediate(() => this.refresh());
-		}, null, this._disposables);
+		}));
 
-		this.editor.webview.onDidReceiveMessage((e: CacheImageSizesMessage | RevealLineMessage | DidClickMessage | ClickLinkMessage | ShowPreviewSecuritySelectorMessage | PreviewStyleLoadErrorMessage) => {
+		this._register(this.editor.webview.onDidReceiveMessage((e: CacheImageSizesMessage | RevealLineMessage | DidClickMessage | ClickLinkMessage | ShowPreviewSecuritySelectorMessage | PreviewStyleLoadErrorMessage) => {
 			if (e.source !== this._resource.toString()) {
 				return;
 			}
@@ -214,21 +214,21 @@ export class MarkdownPreview extends Disposable {
 					vscode.window.showWarningMessage(localize('onPreviewStyleLoadError', "Could not load 'markdown.styles': {0}", e.body.unloadedStyles.join(', ')));
 					break;
 			}
-		}, null, this._disposables);
+		}));
 
-		vscode.workspace.onDidChangeTextDocument(event => {
+		this._register(vscode.workspace.onDidChangeTextDocument(event => {
 			if (this.isPreviewOf(event.document.uri)) {
 				this.refresh();
 			}
-		}, null, this._disposables);
+		}));
 
-		topmostLineMonitor.onDidChangeTopmostLine(event => {
+		this._register(topmostLineMonitor.onDidChangeTopmostLine(event => {
 			if (this.isPreviewOf(event.resource)) {
 				this.updateForView(event.resource, event.line);
 			}
-		}, null, this._disposables);
+		}));
 
-		vscode.window.onDidChangeTextEditorSelection(event => {
+		this._register(vscode.window.onDidChangeTextEditorSelection(event => {
 			if (this.isPreviewOf(event.textEditor.document.uri)) {
 				this.postMessage({
 					type: 'onDidChangeTextEditorSelection',
@@ -236,19 +236,19 @@ export class MarkdownPreview extends Disposable {
 					source: this.resource.toString()
 				});
 			}
-		}, null, this._disposables);
+		}));
 
-		vscode.window.onDidChangeActiveTextEditor(editor => {
+		this._register(vscode.window.onDidChangeActiveTextEditor(editor => {
 			if (editor && isMarkdownFile(editor.document) && !this._locked) {
 				this.update(editor.document.uri);
 			}
-		}, null, this._disposables);
+		}));
 	}
 
-	private readonly _onDisposeEmitter = new vscode.EventEmitter<void>();
+	private readonly _onDisposeEmitter = this._register(new vscode.EventEmitter<void>());
 	public readonly onDispose = this._onDisposeEmitter.event;
 
-	private readonly _onDidChangeViewStateEmitter = new vscode.EventEmitter<vscode.WebviewPanelOnDidChangeViewStateEvent>();
+	private readonly _onDidChangeViewStateEmitter = this._register(new vscode.EventEmitter<vscode.WebviewPanelOnDidChangeViewStateEvent>());
 	public readonly onDidChangeViewState = this._onDidChangeViewStateEmitter.event;
 
 	public get resource(): vscode.Uri {