From fdedd625f0e305203b217be5a603854acd3551f3 Mon Sep 17 00:00:00 2001
From: Eric Amodio <eamodio@gmail.com>
Date: Wed, 29 Mar 2023 23:22:32 -0400
Subject: [PATCH] Adds sending of "next" hint to Commit Details nav

---
 src/system/mru.ts                                  | 6 +++++-
 src/webviews/commitDetails/commitDetailsWebview.ts | 9 ++++++++-
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/system/mru.ts b/src/system/mru.ts
index fbff9c1..7d25515 100644
--- a/src/system/mru.ts
+++ b/src/system/mru.ts
@@ -31,7 +31,11 @@ export class MRU<T> {
 		this._position = 0;
 	}
 
-	get(): T | undefined {
+	get(position?: number): T | undefined {
+		if (position != null) {
+			if (position < 0 || position >= this.stack.length) return undefined;
+			return this.stack[position];
+		}
 		return this.stack.length > 0 ? this.stack[0] : undefined;
 	}
 
diff --git a/src/webviews/commitDetails/commitDetailsWebview.ts b/src/webviews/commitDetails/commitDetailsWebview.ts
index 00ced03..3da4434 100644
--- a/src/webviews/commitDetails/commitDetailsWebview.ts
+++ b/src/webviews/commitDetails/commitDetailsWebview.ts
@@ -25,7 +25,7 @@ import { serializeIssueOrPullRequest } from '../../git/models/issue';
 import type { PullRequest } from '../../git/models/pullRequest';
 import { serializePullRequest } from '../../git/models/pullRequest';
 import type { GitRevisionReference } from '../../git/models/reference';
-import { getReferenceFromRevision } from '../../git/models/reference';
+import { getReferenceFromRevision, shortenRevision } from '../../git/models/reference';
 import type { GitRemote } from '../../git/models/remote';
 import type { ShowInCommitGraphCommandArgs } from '../../plus/webviews/graph/protocol';
 import { executeCommand, executeCoreCommand } from '../../system/command';
@@ -80,6 +80,7 @@ interface Context {
 	navigationStack: {
 		count: number;
 		position: number;
+		hint?: string;
 	};
 
 	visible: boolean;
@@ -537,10 +538,16 @@ export class CommitDetailsWebviewProvider implements WebviewProvider<State, Seri
 			if (!options?.skipStack) {
 				this._commitStack.add(getReferenceFromRevision(commit));
 			}
+
+			let sha = this._commitStack.get(this._commitStack.position + 1)?.ref;
+			if (sha != null) {
+				sha = shortenRevision(sha);
+			}
 			this.updatePendingContext({
 				navigationStack: {
 					count: this._commitStack.count,
 					position: this._commitStack.position,
+					hint: sha,
 				},
 			});
 		}