From 4a232151e065400495ec2ed0ca57dff8da84c4b7 Mon Sep 17 00:00:00 2001
From: Alex Yatskov <alex@foosoft.net>
Date: Sat, 25 Mar 2017 12:21:25 -0700
Subject: [PATCH] more keyboard shortcuts

---
 ext/mixed/js/display.js | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/ext/mixed/js/display.js b/ext/mixed/js/display.js
index 050caf4e..f3423878 100644
--- a/ext/mixed/js/display.js
+++ b/ext/mixed/js/display.js
@@ -140,9 +140,8 @@ class Display {
     }
 
     entryScroll(index, smooth) {
-        if (index < 0 || index >= this.definitions.length) {
-            return;
-        }
+        index = Math.min(index, this.definitions.length - 1);
+        index = Math.max(index, 0);
 
         $('.current').hide().eq(index).show();
 
@@ -217,6 +216,14 @@ class Display {
                 this.entryScroll(this.definitions.length - 1, true);
             },
 
+            33: /* page up */ () => {
+                this.entryScroll(this.index - 3, true);
+            },
+
+            34: /* page down */ () => {
+                this.entryScroll(this.index + 3, true);
+            },
+
             38: /* up */ () => {
                 this.entryScroll(this.index - 1, true);
             },