Unable to copy files across VSCode windows in 1.31 (fixes #68031) (#68104)

src/vs/workbench/contrib/files/electron-browser/fileActions.contribution.ts

@@ -115,7 +115,7 @@ const PASTE_FILE_ID = 'filesExplorer.paste';
 KeybindingsRegistry.registerCommandAndKeybindingRule({
 	id: PASTE_FILE_ID,
 	weight: KeybindingWeight.WorkbenchContrib + explorerCommandsWeightBonus,
-	when: ContextKeyExpr.and(FilesExplorerFocusCondition, ExplorerResourceNotReadonlyContext, FileCopiedContext),
+	when: ContextKeyExpr.and(FilesExplorerFocusCondition, ExplorerResourceNotReadonlyContext),
 	primary: KeyMod.CtrlCmd | KeyCode.KEY_V,
 	handler: pasteFileHandler
 });

src/vs/workbench/contrib/files/electron-browser/views/explorerView.ts

@@ -45,6 +45,7 @@ import { createFileIconThemableTreeContainerScope } from 'vs/workbench/browser/p
 import { IStorageService, StorageScope } from 'vs/platform/storage/common/storage';
 import { IAsyncDataTreeViewState } from 'vs/base/browser/ui/tree/asyncDataTree';
 import { FuzzyScore } from 'vs/base/common/filters';
+import { IClipboardService } from 'vs/platform/clipboard/common/clipboardService';
 
 export class ExplorerView extends ViewletPanel {
 	static readonly ID: string = 'workbench.explorer.fileView';
@@ -84,7 +85,8 @@ export class ExplorerView extends ViewletPanel {
 		@IMenuService private readonly menuService: IMenuService,
 		@ITelemetryService private readonly telemetryService: ITelemetryService,
 		@IExplorerService private readonly explorerService: IExplorerService,
-		@IStorageService private readonly storageService: IStorageService
+		@IStorageService private readonly storageService: IStorageService,
+		@IClipboardService private clipboardService: IClipboardService
 	) {
 		super({ ...(options as IViewletPanelOptions), id: ExplorerView.ID, ariaHeaderLabel: nls.localize('explorerSection', "Files Explorer Section") }, keybindingService, contextMenuService, configurationService);
 
@@ -398,6 +400,9 @@ export class ExplorerView extends ViewletPanel {
 	private onContextMenu(e: ITreeContextMenuEvent<ExplorerItem>): void {
 		const stat = e.element;
 
+		// update dynamic contexts
+		this.fileCopiedContextKey.set(this.clipboardService.hasResources());
+
 		const selection = this.tree.getSelection();
 		this.contextMenuService.showContextMenu({
 			getAnchor: () => e.anchor,