Have workspace.applyEdit correctly account for model version changes and reply with false if a model was loaded and changed in the meantime

src/vs/workbench/api/node/extHostTextEditors.ts

@@ -13,7 +13,7 @@ import * as TypeConverters from './extHostTypeConverters';
 import { TextEditorDecorationType, ExtHostTextEditor } from './extHostTextEditor';
 import { ExtHostDocumentsAndEditors } from './extHostDocumentsAndEditors';
 import { Position as EditorPosition } from 'vs/platform/editor/common/editor';
-import { MainContext, MainThreadEditorsShape, ExtHostEditorsShape, ITextDocumentShowOptions, ITextEditorPositionData, IResolvedTextEditorConfiguration, ISelectionChangeEvent, IMainContext } from './extHost.protocol';
+import { MainContext, MainThreadEditorsShape, ExtHostEditorsShape, ITextDocumentShowOptions, ITextEditorPositionData, IResolvedTextEditorConfiguration, ISelectionChangeEvent, IMainContext, IWorkspaceResourceEdit } from './extHost.protocol';
 import * as vscode from 'vscode';
 
 export class ExtHostEditors implements ExtHostEditorsShape {
@@ -91,6 +91,40 @@ export class ExtHostEditors implements ExtHostEditorsShape {
 		return new TextEditorDecorationType(this._proxy, options);
 	}
 
+	applyWorkspaceEdit(edit: vscode.WorkspaceEdit): TPromise<boolean> {
+
+		let workspaceResourceEdits: IWorkspaceResourceEdit[] = [];
+
+		let entries = edit.entries();
+		for (let entry of entries) {
+			let [uri, edits] = entry;
+
+			let doc = this._extHostDocumentsAndEditors.getDocument(uri.toString());
+			let docVersion: number = undefined;
+			if (doc) {
+				docVersion = doc.version;
+			}
+
+			let workspaceResourceEdit: IWorkspaceResourceEdit = {
+				resource: <URI>uri,
+				modelVersionId: docVersion,
+				edits: []
+			};
+
+			for (let edit of edits) {
+				workspaceResourceEdit.edits.push({
+					newText: edit.newText,
+					newEol: TypeConverters.EndOfLine.from(edit.newEol),
+					range: edit.range && TypeConverters.fromRange(edit.range)
+				});
+			}
+
+			workspaceResourceEdits.push(workspaceResourceEdit);
+		}
+
+		return this._proxy.$tryApplyWorkspaceEdit(workspaceResourceEdits);
+	}
+
 	// --- called from main thread
 
 	$acceptOptionsChanged(id: string, opts: IResolvedTextEditorConfiguration): void {