From 5675466749ec339f11ece82cf454be39f36befc3 Mon Sep 17 00:00:00 2001
From: Abe Jellinek <jellinek@berkeley.edu>
Date: Fri, 6 Dec 2024 11:09:12 -0500
Subject: [PATCH] EPUB: Apply outline keyboard navigation fix

See 21d4efd
---
 src/dom/epub/epub-view.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/dom/epub/epub-view.ts b/src/dom/epub/epub-view.ts
index 26f1f98c..3ab734b1 100644
--- a/src/dom/epub/epub-view.ts
+++ b/src/dom/epub/epub-view.ts
@@ -91,6 +91,8 @@ class EPUBView extends DOMView<EPUBViewState, EPUBViewData> {
 
 	private _pageMappingJSON!: string;
 
+	private _lastNavigationTime = 0;
+
 	constructor(options: DOMViewOptions<EPUBViewState, EPUBViewData>) {
 		super(options);
 		if (options.data.buf) {
@@ -836,7 +838,7 @@ class EPUBView extends DOMView<EPUBViewState, EPUBViewData> {
 			canNavigateToNextSection: this.canNavigateToNextSection(),
 			flowMode: this.flowMode,
 			spreadMode: this.spreadMode,
-			outlinePath: this._getOutlinePath()
+			outlinePath: Date.now() - this._lastNavigationTime > 1500 ? this._getOutlinePath() : undefined,
 		};
 		this._options.onChangeViewStats(viewStats);
 	}
@@ -1151,6 +1153,8 @@ class EPUBView extends DOMView<EPUBViewState, EPUBViewData> {
 
 	override navigate(location: NavLocation, options: NavigateOptions = {}) {
 		console.log('Navigating to', location);
+		this._lastNavigationTime = Date.now();
+
 		options.behavior ||= 'smooth';
 
 		if (location.pageNumber) {