Initial VS Code 1.19 source merge (#571)

* Initial 1.19 xcopy

* Fix yarn build

* Fix numerous build breaks

* Next batch of build break fixes

* More build break fixes

* Runtime breaks

* Additional post merge fixes

* Fix windows setup file

* Fix test failures.

* Update license header blocks to refer to source eula

src/vs/workbench/browser/editor.ts

@@ -11,6 +11,7 @@ import { Registry } from 'vs/platform/registry/common/platform';
 import { BaseEditor } from 'vs/workbench/browser/parts/editor/baseEditor';
 import { IConstructorSignature0, IInstantiationService } from 'vs/platform/instantiation/common/instantiation';
 import { isArray } from 'vs/base/common/types';
+import URI from 'vs/base/common/uri';
 
 export interface IEditorDescriptor {
 	instantiate(instantiationService: IInstantiationService): BaseEditor;
@@ -196,4 +197,43 @@ export const Extensions = {
 	Editors: 'workbench.contributions.editors'
 };
 
-Registry.add(Extensions.Editors, new EditorRegistry());
+Registry.add(Extensions.Editors, new EditorRegistry());
+
+export interface IDraggedResource {
+	resource: URI;
+	isExternal: boolean;
+}
+
+export function extractResources(e: DragEvent, externalOnly?: boolean): IDraggedResource[] {
+	const resources: IDraggedResource[] = [];
+	if (e.dataTransfer.types.length > 0) {
+
+		// Check for in-app DND
+		if (!externalOnly) {
+			const rawData = e.dataTransfer.getData('URL');
+			if (rawData) {
+				try {
+					resources.push({ resource: URI.parse(rawData), isExternal: false });
+				} catch (error) {
+					// Invalid URI
+				}
+			}
+		}
+
+		// Check for native file transfer
+		if (e.dataTransfer && e.dataTransfer.files) {
+			for (let i = 0; i < e.dataTransfer.files.length; i++) {
+				const file = e.dataTransfer.files[i] as { path: string };
+				if (file && file.path) {
+					try {
+						resources.push({ resource: URI.file(file.path), isExternal: true });
+					} catch (error) {
+						// Invalid URI
+					}
+				}
+			}
+		}
+	}
+
+	return resources;
+}