From 952e65590368931781327d1662061d46fa15ddd2 Mon Sep 17 00:00:00 2001
From: Ascrod <32915892+Ascrod@users.noreply.github.com>
Date: Thu, 25 Apr 2019 20:31:18 -0400
Subject: Replace explicit pref observer with lazy preference getters. Tag
 #361.

---
 toolkit/components/reader/ReaderMode.jsm | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

(limited to 'toolkit/components/reader/ReaderMode.jsm')

diff --git a/toolkit/components/reader/ReaderMode.jsm b/toolkit/components/reader/ReaderMode.jsm
index ebc333495..030205446 100644
--- a/toolkit/components/reader/ReaderMode.jsm
+++ b/toolkit/components/reader/ReaderMode.jsm
@@ -38,15 +38,6 @@ this.ReaderMode = {
 
   DEBUG: 0,
 
-  // Don't try to parse the page if it has too many elements (for memory and
-  // performance reasons)
-  get maxElemsToParse() {
-    delete this.parseNodeLimit;
-
-    Services.prefs.addObserver("reader.parse-node-limit", this, false);
-    return this.parseNodeLimit = Services.prefs.getIntPref("reader.parse-node-limit");
-  },
-
   /**
    * Enter the reader mode by going forward one step in history if applicable,
    * if not, append the about:reader page in the history instead.
@@ -548,3 +539,8 @@ this.ReaderMode = {
     return readingSpeed.get(lang) || readingSpeed.get("en");
   },
 };
+
+// Don't try to parse the page if it has too many elements (for memory and
+// performance reasons)
+XPCOMUtils.defineLazyPreferenceGetter(
+  ReaderMode, "maxElemsToParse", "reader.parse-node-limit", 0);
-- 
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