Add minimum visible count to open editors (#147771)

Author: lramos15

src/vs/workbench/contrib/files/browser/files.contribution.ts

@@ -337,10 +337,16 @@ configurationRegistry.registerConfiguration({
 	'properties': {
 		'explorer.openEditors.visible': {
 			'type': 'number',
-			'description': nls.localize({ key: 'openEditorsVisible', comment: ['Open is an adjective'] }, "Number of editors shown in the Open Editors pane. Setting this to 0 hides the Open Editors pane."),
+			'description': nls.localize({ key: 'openEditorsVisible', comment: ['Open is an adjective'] }, "The maximum number of editors shown in the Open Editors pane. Setting this to 0 hides the Open Editors pane."),
 			'default': 9,
 			'minimum': 0
 		},
+		'explorer.openEditors.minVisible': {
+			'type': 'number',
+			'description': nls.localize({ key: 'openEditorsVisibleMin', comment: ['Open is an adjective'] }, "The minimum number of editor slots shown in the Open Editors pane. If set to 0 the Open Editors pane will dynamically resize based on the number of editors."),
+			'default': 0,
+			'minimum': 0
+		},
 		'explorer.openEditors.sortOrder': {
 			'type': 'string',
 			'enum': ['editorOrder', 'alphabetical', 'fullPath'],

src/vs/workbench/contrib/files/browser/views/openEditorsView.ts

@@ -59,6 +59,7 @@ const $ = dom.$;
 export class OpenEditorsView extends ViewPane {
 
 	private static readonly DEFAULT_VISIBLE_OPEN_EDITORS = 9;
+	private static readonly DEFAULT_MIN_VISIBLE_OPEN_EDITORS = 0;
 	static readonly ID = 'workbench.explorer.openEditorsView';
 	static readonly NAME = nls.localize({ key: 'openEditors', comment: ['Open is an adjective'] }, "Open Editors");
 
@@ -466,12 +467,17 @@ export class OpenEditorsView extends ViewPane {
 	}
 
 	private getMaxExpandedBodySize(): number {
+		let minVisibleOpenEditors = this.configurationService.getValue<number>('explorer.openEditors.minVisible');
+		// If it's not a number setting it to 0 will result in dynamic resizing.
+		if (typeof minVisibleOpenEditors !== 'number') {
+			minVisibleOpenEditors = OpenEditorsView.DEFAULT_MIN_VISIBLE_OPEN_EDITORS;
+		}
 		const containerModel = this.viewDescriptorService.getViewContainerModel(this.viewDescriptorService.getViewContainerByViewId(this.id)!)!;
 		if (containerModel.visibleViewDescriptors.length <= 1) {
 			return Number.POSITIVE_INFINITY;
 		}
 
-		return this.elementCount * OpenEditorsDelegate.ITEM_HEIGHT;
+		return (Math.max(this.elementCount, minVisibleOpenEditors)) * OpenEditorsDelegate.ITEM_HEIGHT;
 	}
 
 	private getMinExpandedBodySize(): number {