Fix logic for 1 editor Inc/Dec View command

src/vs/workbench/browser/layout.ts

@@ -700,7 +700,10 @@ export class WorkbenchLayout implements IVerticalSashLayoutProvider, IHorizontal
 
 	// change part size along the main axis
 	public resizePart(part: Parts, sizeChange: number): void {
-		const visibleEditors = this.editorService.getVisibleEditors().length;
+		const visibleEditorCount = this.editorService.getVisibleEditors().length;
+		const isSidebarVisible = this.partService.isVisible(Parts.SIDEBAR_PART);
+		const isPanelVisible = this.partService.isVisible(Parts.PANEL_PART);
+		const panelPosition = this.partService.getPanelPosition();
 		const sizeChangePxWidth = this.workbenchSize.width * (sizeChange / 100);
 		const sizeChangePxHeight = this.workbenchSize.height * (sizeChange / 100);
 
@@ -710,24 +713,37 @@ export class WorkbenchLayout implements IVerticalSashLayoutProvider, IHorizontal
 			case Parts.SIDEBAR_PART:
 				this.sidebarWidth = this.sidebarWidth + sizeChangePxWidth; // Sidebar can not become smaller than MIN_PART_WIDTH
 
-				if (this.layoutEditorGroupsVertically && (this.workbenchSize.width - this.sidebarWidth < visibleEditors * MIN_EDITOR_PART_WIDTH)) {
-					this.sidebarWidth = (this.workbenchSize.width - visibleEditors * MIN_EDITOR_PART_WIDTH);
+				if (this.layoutEditorGroupsVertically && (this.workbenchSize.width - this.sidebarWidth < visibleEditorCount * MIN_EDITOR_PART_WIDTH)) {
+					this.sidebarWidth = (this.workbenchSize.width - visibleEditorCount * MIN_EDITOR_PART_WIDTH);
 				}
 
 				doLayout = true;
 				break;
 			case Parts.PANEL_PART:
-				this.panelHeight = this.panelHeight + sizeChangePxHeight;
-				this.panelWidth = this.panelWidth + sizeChangePxWidth;
+				if (panelPosition === Position.BOTTOM) {
+					this.panelHeight = this.panelHeight + sizeChangePxHeight;
+				} else if (panelPosition === Position.RIGHT) {
+					this.panelWidth = this.panelWidth + sizeChangePxWidth;
+				}
+
 				doLayout = true;
 				break;
 			case Parts.EDITOR_PART:
 				// If we have one editor we can cheat and resize sidebar with the negative delta
-				const visibleEditorCount = this.editorService.getVisibleEditors().length;
-
+				// If the sidebar is not visible and panel is, resize panel main axis with negative Delta
 				if (visibleEditorCount === 1) {
-					this.sidebarWidth = this.sidebarWidth - sizeChangePxWidth;
-					doLayout = true;
+					if (isSidebarVisible) {
+						this.sidebarWidth = this.sidebarWidth - sizeChangePxWidth;
+						doLayout = true;
+					} else if (isPanelVisible) {
+						if (panelPosition === Position.BOTTOM) {
+							this.panelHeight = this.panelHeight - sizeChangePxHeight;
+						} else if (panelPosition === Position.RIGHT) {
+							this.panelWidth = this.panelWidth - sizeChangePxWidth;
+						}
+						doLayout = true;
+					}
+
 				} else {
 					const stacks = this.editorGroupService.getStacksModel();
 					const activeGroup = stacks.positionOfGroup(stacks.activeGroup);