Developed for support enable loop diff result from the beginning or end of document microsoft#163331

Author: Kalmaegi

src/vs/editor/browser/widget/diffNavigator.ts

@@ -23,12 +23,14 @@ export interface Options {
 	followsCaret?: boolean;
 	ignoreCharChanges?: boolean;
 	alwaysRevealFirst?: boolean;
+	findResultLoop?: boolean;
 }
 
 const defaultOptions: Options = {
 	followsCaret: true,
 	ignoreCharChanges: true,
-	alwaysRevealFirst: true
+	alwaysRevealFirst: true,
+	findResultLoop: true
 };
 
 export interface IDiffNavigator {
@@ -216,13 +218,31 @@ export class DiffNavigator extends Disposable implements IDiffNavigator {
 	}
 
 	next(scrollType: ScrollType = ScrollType.Smooth): void {
+		if (!this.canNavigateNext()) {
+			return;
+		}
 		this._move(true, scrollType);
 	}
 
 	previous(scrollType: ScrollType = ScrollType.Smooth): void {
+		if (!this.canNavigatePrevious()) {
+			return;
+		}
 		this._move(false, scrollType);
 	}
 
+	canNavigateNext(): boolean {
+		return this.canNavigateLoop() || this.nextIdx < this.ranges.length - 1;
+	}
+
+	canNavigatePrevious(): boolean {
+		return this.canNavigateLoop() || this.nextIdx !== 0;
+	}
+
+	canNavigateLoop(): boolean {
+		return Boolean(this._options.findResultLoop);
+	}
+
 	override dispose(): void {
 		super.dispose();
 		this.ranges = [];

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

@@ -7,7 +7,7 @@ import { localize } from 'vs/nls';
 import { deepClone } from 'vs/base/common/objects';
 import { isObject, assertIsDefined, withUndefinedAsNull, withNullAsUndefined } from 'vs/base/common/types';
 import { ICodeEditor, IDiffEditor } from 'vs/editor/browser/editorBrowser';
-import { IDiffEditorOptions, IEditorOptions as ICodeEditorOptions } from 'vs/editor/common/config/editorOptions';
+import { IDiffEditorOptions, EditorOption, IEditorOptions as ICodeEditorOptions } from 'vs/editor/common/config/editorOptions';
 import { AbstractTextEditor, IEditorConfiguration } from 'vs/workbench/browser/parts/editor/textEditor';
 import { TEXT_DIFF_EDITOR_ID, IEditorFactoryRegistry, EditorExtensions, ITextDiffEditorPane, IEditorOpenContext, EditorInputCapabilities, isEditorInput, isTextEditorViewState } from 'vs/workbench/common/editor';
 import { EditorInput } from 'vs/workbench/common/editor/editorInput';
@@ -132,7 +132,8 @@ export class TextDiffEditor extends AbstractTextEditor<IDiffEditorViewState> imp
 
 			// Diff navigator
 			this.diffNavigator = new DiffNavigator(control, {
-				alwaysRevealFirst: !optionsGotApplied && !hasPreviousViewState // only reveal first change if we had no options or viewstate
+				alwaysRevealFirst: !optionsGotApplied && !hasPreviousViewState, // only reveal first change if we had no options or viewstate
+				findResultLoop: this.getMainControl()?.getOption(EditorOption.find).loop
 			});
 			this.diffNavigatorDisposables.add(this.diffNavigator);