editors - some 💄 from code review

src/vs/workbench/browser/parts/editor/editorCommands.ts

@@ -902,11 +902,10 @@ function registerCloseEditorCommands() {
 
 			for (const { editor, group } of editorsAndGroup) {
 				const untypedEditor = editor.toUntyped();
-
-				// Resolver can only resolve untyped editors
 				if (!untypedEditor) {
-					return;
+					return; // Resolver can only resolve untyped editors
 				}
+
 				untypedEditor.options = { ...editorService.activeEditorPane?.options, override: EditorResolution.PICK };
 				const resolvedEditor = await editorResolverService.resolveEditor(untypedEditor, group);
 				if (!isEditorInputWithOptionsAndGroup(resolvedEditor)) {
@@ -925,7 +924,6 @@ function registerCloseEditorCommands() {
 				});
 
 				// Telemetry
-
 				type WorkbenchEditorReopenClassification = {
 					owner: 'rebornix';
 					comment: 'Identify how a document is reopened';
@@ -1403,7 +1401,7 @@ export function getEditorsFromContext(accessor: ServicesAccessor, resourceOrCont
 		if (!editor || !group) {
 			return undefined;
 		}
-		return { editor: editor, group: group };
+		return { editor, group };
 	});
 
 	return editorsAndGroup.filter(group => !!group);

src/vs/workbench/browser/parts/editor/editorDropTarget.ts

@@ -165,7 +165,7 @@ class DropOverlay extends Themable {
 					isCopy = this.isCopyOperation(e);
 				} else if (isDraggingEditor) {
 					const data = this.editorTransfer.getData(DraggedEditorIdentifier.prototype);
-					if (Array.isArray(data)) {
+					if (Array.isArray(data) && data.length > 0) {
 						isCopy = this.isCopyOperation(e, data[0].identifier);
 					}
 				}
@@ -234,15 +234,15 @@ class DropOverlay extends Themable {
 		// Check for group transfer
 		if (this.groupTransfer.hasData(DraggedEditorGroupIdentifier.prototype)) {
 			const data = this.groupTransfer.getData(DraggedEditorGroupIdentifier.prototype);
-			if (Array.isArray(data)) {
+			if (Array.isArray(data) && data.length > 0) {
 				return this.editorGroupService.getGroup(data[0].identifier);
 			}
 		}
 
 		// Check for editor transfer
 		else if (this.editorTransfer.hasData(DraggedEditorIdentifier.prototype)) {
 			const data = this.editorTransfer.getData(DraggedEditorIdentifier.prototype);
-			if (Array.isArray(data)) {
+			if (Array.isArray(data) && data.length > 0) {
 				return this.editorGroupService.getGroup(data[0].identifier.groupId);
 			}
 		}
@@ -267,7 +267,7 @@ class DropOverlay extends Themable {
 		// Check for group transfer
 		if (this.groupTransfer.hasData(DraggedEditorGroupIdentifier.prototype)) {
 			const data = this.groupTransfer.getData(DraggedEditorGroupIdentifier.prototype);
-			if (Array.isArray(data)) {
+			if (Array.isArray(data) && data.length > 0) {
 				const sourceGroup = this.editorGroupService.getGroup(data[0].identifier);
 				if (sourceGroup) {
 					if (typeof splitDirection !== 'number' && sourceGroup === this.groupView) {
@@ -306,7 +306,7 @@ class DropOverlay extends Themable {
 		// Check for editor transfer
 		else if (this.editorTransfer.hasData(DraggedEditorIdentifier.prototype)) {
 			const data = this.editorTransfer.getData(DraggedEditorIdentifier.prototype);
-			if (Array.isArray(data)) {
+			if (Array.isArray(data) && data.length > 0) {
 				const draggedEditors = data;
 				const firstDraggedEditor = data[0].identifier;
 
@@ -333,8 +333,8 @@ class DropOverlay extends Themable {
 							{
 								editor: draggedEditor.identifier.editor,
 								options: fillActiveEditorViewState(sourceGroup, draggedEditor.identifier.editor, {
-									pinned: true,										// always pin dropped editor
-									sticky: sourceGroup.isSticky(firstDraggedEditor.editor),	// preserve sticky state
+									pinned: true,											// always pin dropped editor
+									sticky: sourceGroup.isSticky(firstDraggedEditor.editor)	// preserve sticky state
 								})
 							}
 						));
@@ -357,7 +357,7 @@ class DropOverlay extends Themable {
 		// Check for tree items
 		else if (this.treeItemsTransfer.hasData(DraggedTreeItemsIdentifier.prototype)) {
 			const data = this.treeItemsTransfer.getData(DraggedTreeItemsIdentifier.prototype);
-			if (Array.isArray(data)) {
+			if (Array.isArray(data) && data.length > 0) {
 				const editors: IUntypedEditorInput[] = [];
 				for (const id of data) {
 					const dataTransferItem = await this.treeViewsDragAndDropService.removeDragOperationTransfer(id.identifier);

src/vs/workbench/browser/parts/editor/editorTabsControl.ts

@@ -86,7 +86,7 @@ export interface IEditorTabsControl extends IDisposable {
 	stickEditor(editor: EditorInput): void;
 	unstickEditor(editor: EditorInput): void;
 	setActive(isActive: boolean): void;
-	setEditorSelections(editor: EditorInput[], selected: boolean): void;
+	setEditorSelections(editors: EditorInput[], selected: boolean): void;
 	updateEditorLabel(editor: EditorInput): void;
 	updateEditorDirty(editor: EditorInput): void;
 	layout(dimensions: IEditorTitleControlDimensions): Dimension;
@@ -503,7 +503,7 @@ export abstract class EditorTabsControl extends Themable implements IEditorTabsC
 
 	abstract setActive(isActive: boolean): void;
 
-	abstract setEditorSelections(editor: EditorInput[], selected: boolean): void;
+	abstract setEditorSelections(editors: EditorInput[], selected: boolean): void;
 
 	abstract updateEditorLabel(editor: EditorInput): void;
 

src/vs/workbench/browser/parts/editor/multiEditorTabsControl.ts

@@ -1535,7 +1535,7 @@ export class MultiEditorTabsControl extends EditorTabsControl {
 		// Borders / outline
 		this.redrawTabBorders(tabIndex, tabContainer);
 
-		// Active / dirty state
+		// Selection / active / dirty state
 		this.redrawTabSelectedActiveAndDirty(this.groupsView.activeGroup === this.groupView, editor, tabContainer, tabActionBar);
 	}
 

src/vs/workbench/browser/parts/editor/noEditorTabsControl.ts

@@ -61,7 +61,7 @@ export class NoEditorTabsControl extends EditorTabsControl {
 
 	setActive(isActive: boolean): void { }
 
-	setEditorSelections(editor: EditorInput[], selected: boolean): void { }
+	setEditorSelections(editors: EditorInput[], selected: boolean): void { }
 
 	updateEditorLabel(editor: EditorInput): void { }
 

src/vs/workbench/browser/parts/editor/singleEditorTabsControl.ts

@@ -179,19 +179,15 @@ export class SingleEditorTabsControl extends EditorTabsControl {
 		this.ifEditorIsActive(editor, () => this.redraw());
 	}
 
-	stickEditor(editor: EditorInput): void {
-		// Sticky editors are not presented any different with tabs disabled
-	}
+	stickEditor(editor: EditorInput): void { }
 
-	unstickEditor(editor: EditorInput): void {
-		// Sticky editors are not presented any different with tabs disabled
-	}
+	unstickEditor(editor: EditorInput): void { }
 
 	setActive(isActive: boolean): void {
 		this.redraw();
 	}
 
-	setEditorSelections(editor: EditorInput[], selected: boolean): void { }
+	setEditorSelections(editors: EditorInput[], selected: boolean): void { }
 
 	updateEditorLabel(editor: EditorInput): void {
 		this.ifEditorIsActive(editor, () => this.redraw());

src/vs/workbench/common/editor/editorGroupModel.ts

@@ -221,17 +221,18 @@ export class EditorGroupModel extends Disposable implements IEditorGroupModel {
 
 	private locked = false;
 
-	private selected: EditorInput[] = [];		// editors in selected state, first one is active
+	private selected: EditorInput[] = [];					// editors in selected state, first one is active
+
 	private set active(editor: EditorInput | null) {
 		this.selected = editor ? [editor] : [];
 	}
 	private get active(): EditorInput | null {
-		return this.selected[0] || null;
+		return this.selected[0] ?? null;
 	}
 
-	private preview: EditorInput | null = null; // editor in preview state
-	private sticky = -1; 						// index of first editor in sticky state
-	private readonly transient = new Set<EditorInput>(); // editors in transient state
+	private preview: EditorInput | null = null; 			// editor in preview state
+	private sticky = -1;									// index of first editor in sticky state
+	private readonly transient = new Set<EditorInput>(); 	// editors in transient state
 
 	private editorOpenPositioning: ('left' | 'right' | 'first' | 'last') | undefined;
 	private focusRecentEditorAfterClose: boolean | undefined;
@@ -582,6 +583,7 @@ export class EditorGroupModel extends Disposable implements IEditorGroupModel {
 				this.active = null;
 			}
 		}
+
 		// Remove from selection
 		else if (!isActiveEditor) {
 			const wasSelected = !!this.selected.find(selected => this.matches(selected, editor));
@@ -729,7 +731,7 @@ export class EditorGroupModel extends Disposable implements IEditorGroupModel {
 		return this.editors.filter(editor => this.isSelected(editor));
 	}
 
-	isSelected(editor: number | EditorInput): boolean {
+	isSelected(editor: EditorInput | number): boolean {
 		if (typeof editor === 'number') {
 			editor = this.editors[editor];
 		}

src/vs/workbench/common/editor/filteredEditorGroupModel.ts

@@ -42,7 +42,7 @@ abstract class FilteredEditorGroupModel extends Disposable implements IReadonlyE
 	isTransient(editorOrIndex: EditorInput | number): boolean { return this.model.isTransient(editorOrIndex); }
 	isSticky(editorOrIndex: EditorInput | number): boolean { return this.model.isSticky(editorOrIndex); }
 	isActive(editor: EditorInput | IUntypedEditorInput): boolean { return this.model.isActive(editor); }
-	isSelected(editor: number | EditorInput): boolean { return this.model.isSelected(editor); }
+	isSelected(editor: EditorInput | number): boolean { return this.model.isSelected(editor); }
 
 	isFirst(editor: EditorInput): boolean {
 		return this.model.isFirst(editor, this.getEditors(EditorsOrder.SEQUENTIAL));

src/vs/workbench/services/editor/common/editorGroupsService.ts

@@ -779,7 +779,6 @@ export interface IEditorGroup {
 	 */
 	selectEditor(editor: EditorInput, active?: boolean): Promise<void>;
 
-
 	/**
 	 * Selects the editors in the group. If activeEditor is provided,
 	 * it will be the active editor in the group.