From a618964b2db8149f1f395076e24e1e15b717a0bf Mon Sep 17 00:00:00 2001
From: w8tcha <thewatcher@watchersnet.de>
Date: Sat, 24 Dec 2016 17:16:37 +0100
Subject: [PATCH] prevent browser error when localstorage is full fixes #67

---
 autosave/lang/ca.js    |  1 +
 autosave/lang/cs.js    |  1 +
 autosave/lang/de.js    |  1 +
 autosave/lang/en.js    |  3 ++-
 autosave/lang/es.js    |  1 +
 autosave/lang/fr.js    |  1 +
 autosave/lang/ja.js    |  1 +
 autosave/lang/nl.js    |  1 +
 autosave/lang/pl.js    |  1 +
 autosave/lang/pt-br.js |  1 +
 autosave/lang/sk.js    |  1 +
 autosave/lang/sv.js    |  4 ++-
 autosave/lang/zh-cn.js |  1 +
 autosave/lang/zh.js    |  1 +
 autosave/plugin.js     | 56 +++++++++++++++++++++++++++++++++++-------
 15 files changed, 64 insertions(+), 11 deletions(-)

diff --git a/autosave/lang/ca.js b/autosave/lang/ca.js
index ad8d84d..bbf41bf 100644
--- a/autosave/lang/ca.js
+++ b/autosave/lang/ca.js
@@ -8,6 +8,7 @@ CKEDITOR.plugins.setLang('autosave', 'ca', {
     loadSavedContent: 'S\'ha trobat una versió auto-desada d\'aquest contingut de "{0}". Voleu comparar les versions del contingut i escollir quina carregar?',
     title: 'Compareu el contingut auto-desat amb el contingut carregat del lloc web',
     loadedContent: 'Contingut carregat',
+    localStorageFull: 'Browser localStorage is full, clear your storage or Increase database size',
     autoSavedContent: 'Contingut auto-desat de: \'',
 	ok: 'Sí, carrega el contingut auto-desat',
 	no: 'No',
diff --git a/autosave/lang/cs.js b/autosave/lang/cs.js
index d3406a9..d2c1ba8 100644
--- a/autosave/lang/cs.js
+++ b/autosave/lang/cs.js
@@ -8,6 +8,7 @@ CKEDITOR.plugins.setLang('autosave', 'cs', {
     loadSavedContent: 'byla nalezena automaticky uložená verze obsahu ze dne "{0}". Chcete porovnat obsah a zvolit si s kterým obsahem chete pracovat?',
     title: 'Porovnejre automaticky uložený obsah s obsahem nahraným z webové stránky',
     loadedContent: 'Nahraný obsah',
+    localStorageFull: 'Browser localStorage is full, clear your storage or Increase database size',
     autoSavedContent: 'Automaticky uložený obsah z: \'',
 	ok: 'Ano, zvolit automaticky uložený obsah',
 	no: 'Ne',
diff --git a/autosave/lang/de.js b/autosave/lang/de.js
index 6e93473..6f525e7 100644
--- a/autosave/lang/de.js
+++ b/autosave/lang/de.js
@@ -8,6 +8,7 @@ CKEDITOR.plugins.setLang('autosave', 'de', {
     loadSavedContent: 'Es wurde ein autom. Gespeicherter Inhalt gefunden (vom "{0}"). Wollen Sie den Inhalt vergleichen, um dann entscheiden zu können ob der Inhalt geladen werden soll?',
     title: 'Temp. Gespeichert Inhalt vergleichen',
     loadedContent: 'Geladener Inhalt',
+    localStorageFull: 'Browser localStorage is full, clear your storage or Increase database size',
     autoSavedContent: 'Autom. Gespeicherten Inhalt (vom: \'',
     ok: 'Ja, Lade Autom. Gespeicherten Inhalt',
     no: 'Nein',
diff --git a/autosave/lang/en.js b/autosave/lang/en.js
index 866f4af..ddae7f7 100644
--- a/autosave/lang/en.js
+++ b/autosave/lang/en.js
@@ -7,7 +7,8 @@ CKEDITOR.plugins.setLang('autosave', 'en', {
     autoSaveMessage: 'Auto Saved',
     loadSavedContent: 'An auto-saved version of this content from "{0}" has been found. Would you like to compare content versions and choose which one to load? Clicking Cancel will remove previously auto-saved content.',
     title: 'Compare auto-saved content with that loaded from the website',
-    loadedContent: 'Loaded content',
+    loadedContent: 'Loaded content', 
+    localStorageFull: 'Browser localStorage is full, clear your storage or Increase database size',
     autoSavedContent: 'Auto-saved content from: \'',
 	ok: 'Yes, load auto-saved content',
 	no: 'No',
diff --git a/autosave/lang/es.js b/autosave/lang/es.js
index c188929..46a4016 100644
--- a/autosave/lang/es.js
+++ b/autosave/lang/es.js
@@ -8,6 +8,7 @@ CKEDITOR.plugins.setLang('autosave', 'es', {
     loadSavedContent: 'Se ha encontrado una versión auto-guardada de este contenido de "{0}". Queréis comparar el contenido de las versiones y elegir cual cargar?',
     title: 'Compara el contenido auto-guardado con el cargado del sitio web',
     loadedContent: 'Contenido cargado',
+    localStorageFull: 'Browser localStorage is full, clear your storage or Increase database size',
     autoSavedContent: 'Contenido auto-guardado de: \'',
 	ok: 'Si, carga el contenido auto-guardado',
 	no: 'No',
diff --git a/autosave/lang/fr.js b/autosave/lang/fr.js
index 1b456b7..4faa676 100644
--- a/autosave/lang/fr.js
+++ b/autosave/lang/fr.js
@@ -8,6 +8,7 @@ CKEDITOR.plugins.setLang('autosave', 'fr', {
     loadSavedContent: 'Une précédente version a été sauvegardée le "{0}". Voulez-vous l\'afficher et la comparer avec le document en cours ?',
     title: 'Comparaison du document en cours et du document sauvegardé',
     loadedContent: 'Document en cours',
+    localStorageFull: 'Browser localStorage is full, clear your storage or Increase database size',
     autoSavedContent: 'Document sauvegardé le : \'',
     ok: 'Oui, charger le document sauvegardé',
     no: 'Non, continuer avec le document en cours',
diff --git a/autosave/lang/ja.js b/autosave/lang/ja.js
index 61fcf1b..a931a12 100644
--- a/autosave/lang/ja.js
+++ b/autosave/lang/ja.js
@@ -8,6 +8,7 @@ CKEDITOR.plugins.setLang('autosave', 'ja', {
     loadSavedContent: '投稿途中だった内容があります（{0}）。現在保存されている投稿と比較しますか？',
     title: 'Compare auto-saved content with that loaded from the website',
     loadedContent: '現在保存されている投稿',
+    localStorageFull: 'Browser localStorage is full, clear your storage or Increase database size',
     autoSavedContent: '投稿途中だった内容: \'',
 	ok: '投稿途中だった内容（緑）を使う',
 	no: 'いいえ',
diff --git a/autosave/lang/nl.js b/autosave/lang/nl.js
index f65de80..a01f452 100644
--- a/autosave/lang/nl.js
+++ b/autosave/lang/nl.js
@@ -8,6 +8,7 @@ CKEDITOR.plugins.setLang('autosave', 'nl', {
     loadSavedContent: 'Een automatisch opgeslagen versie van deze inhoud van "{0}" is gevonden. Wilt u de inhoud van deze versies vergelijken en kiezen welke te laden?',
     title: 'Vergelijk automatisch opgeslagen inhoud met die geladen van de website',
     loadedContent: 'Geladen inhoud',
+    localStorageFull: 'Browser localStorage is full, clear your storage or Increase database size',
     autoSavedContent: 'Automatisch opgeslagen inhoud van: \'',
 	ok: 'Ja, laadt automatisch opgeslagen inhoud',
 	no: 'Nee',
diff --git a/autosave/lang/pl.js b/autosave/lang/pl.js
index 15b5890..b0d1f43 100644
--- a/autosave/lang/pl.js
+++ b/autosave/lang/pl.js
@@ -8,6 +8,7 @@ CKEDITOR.plugins.setLang('autosave', 'pl', {
     loadSavedContent: 'Istnieje automatycznie zapisana wersja zawartości (z "{0}"). Otworzyć okno porównawcze, w którym można zadecydować o wczytaniu automatycznie zapisanej zawartości?',
     title: 'Porównanie tymczasowo zapisanej zawartości z zawartością wczytaną w witrynie',
     loadedContent: 'Zawartość wczytania',
+    localStorageFull: 'Browser localStorage is full, clear your storage or Increase database size',
     autoSavedContent: 'Zawartość zapisana automatycznie (z: \'',
     ok: 'Tak, wczytaj automatycznie zapisaną treść',
     no: 'Nie',
diff --git a/autosave/lang/pt-br.js b/autosave/lang/pt-br.js
index 7bf9f21..9c171ff 100644
--- a/autosave/lang/pt-br.js
+++ b/autosave/lang/pt-br.js
@@ -8,6 +8,7 @@ CKEDITOR.plugins.setLang('autosave', 'pt-br', {
     loadSavedContent: 'An auto-saved version of this content from "{0}" has been found. Would you like to compare content versions and choose which one to load?',
     title: 'Compare auto-saved content with that loaded from the website',
     loadedContent: 'Loaded content',
+    localStorageFull: 'Browser localStorage is full, clear your storage or Increase database size',
     autoSavedContent: 'Auto-saved content from: \'',
 	ok: 'Yes, load auto-saved content',
 	no: 'No',
diff --git a/autosave/lang/sk.js b/autosave/lang/sk.js
index 22373d3..75555c6 100644
--- a/autosave/lang/sk.js
+++ b/autosave/lang/sk.js
@@ -8,6 +8,7 @@ CKEDITOR.plugins.setLang('autosave', 'sk', {
     loadSavedContent: 'Bola nájdená automaticky uložená verzia z "{0}". Chcete porovnať obsah a vybrať verziu, ktorú chcete použiť?',
     title: 'Porovnanie automaticky uloženého obsahu s obsahom nahraným z webu',
     loadedContent: 'Nahraný obsah z webu',
+    localStorageFull: 'Browser localStorage is full, clear your storage or Increase database size',
     autoSavedContent: 'Automaticky uložený obsah z: \'',
 	ok: 'Použiť automaticky uložený obsah',
 	no: 'Použiť obsah z webu',
diff --git a/autosave/lang/sv.js b/autosave/lang/sv.js
index b150018..f0dd509 100644
--- a/autosave/lang/sv.js
+++ b/autosave/lang/sv.js
@@ -4,10 +4,12 @@ For licensing, see LICENSE.html or http://ckeditor.com/license
 */
 CKEDITOR.plugins.setLang('autosave', 'sv', {
     dateFormat: 'LLL',
-    autoSaveMessage: 'Autosparat',
+    autoSaveMessage: 'Auto Saved',
+    loadSavedContent: 'There is a auto-saved version of this content (From "{0}") found. Do you want to open the Compare Dialog, where you can decide to load the auto saved Content?',
     loadSavedContent: 'En auto-sparad version av det här innehållet (från "{0}") hittades. Vill du öppna en dialogruta för att jämföra, där du även kan välja att läsa in det auto sparade innehållet?',
     title: 'Jämför Temporärt sparat innehåll med det inladdade innehållet från sidan',
     loadedContent: 'Inladdat innehåll',
+    localStorageFull: 'Browser localStorage is full, clear your storage or Increase database size',
     autoSavedContent: 'Autosparat innehåll (från: \'',
 	ok: 'Läs in Autosparat innehåll',
 	no: 'Nej tack',
diff --git a/autosave/lang/zh-cn.js b/autosave/lang/zh-cn.js
index dabbec8..54363a4 100644
--- a/autosave/lang/zh-cn.js
+++ b/autosave/lang/zh-cn.js
@@ -8,6 +8,7 @@ CKEDITOR.plugins.setLang('autosave', 'zh-cn', {
     loadSavedContent: '已经存在这个内容之前保存的版本 "{0}". 你希望比较两个不同的版本并从中选择你想要加载的那个么?',
     title: '比较自动保存的版本',
     loadedContent: '已经加载的内容',
+    localStorageFull: 'Browser localStorage is full, clear your storage or Increase database size',
     autoSavedContent: '自动保存的内容: \'',
 	ok: '我确认,加载自动保存的内容',
 	no: '取消',
diff --git a/autosave/lang/zh.js b/autosave/lang/zh.js
index aa8e2bb..2f48c84 100644
--- a/autosave/lang/zh.js
+++ b/autosave/lang/zh.js
@@ -8,6 +8,7 @@ CKEDITOR.plugins.setLang('autosave', 'zh', {
     loadSavedContent: 'An auto-saved version of this content from "{0}" has been found. Would you like to compare content versions and choose which one to load?',
     title: 'Compare auto-saved content with that loaded from the website',
     loadedContent: 'Loaded content',
+    localStorageFull: 'Browser localStorage is full, clear your storage or Increase database size',
     autoSavedContent: 'Auto-saved content from: \'',
 	ok: 'Yes, load auto-saved content',
 	no: 'No',
diff --git a/autosave/plugin.js b/autosave/plugin.js
index 3961e9b..62416e8 100644
--- a/autosave/plugin.js
+++ b/autosave/plugin.js
@@ -243,27 +243,42 @@
 
     function SaveData(autoSaveKey, editorInstance, config) {
         var compressedJSON = LZString.compressToUTF16(JSON.stringify({ data: editorInstance.getData(), saveTime: new Date() }));
-        localStorage.setItem(autoSaveKey, compressedJSON);
 
-        var messageType = config.messageType != null ? config.messageType : "notification";
+        var quotaExceeded = false;
 
-        if (editorInstance.plugins.textselection && messageType == "statusbar") {
-            messageType = "notification";
+        try {
+            localStorage.setItem(autoSaveKey, compressedJSON);
+        } catch (e) {
+            quotaExceeded = isQuotaExceeded(e);
+            if (quotaExceeded) {
+                console.log(editorInstance.lang.autosave.localStorageFull);
+            }
         }
 
-        if (messageType == "statusbar") {
+        if (quotaExceeded) {
+            var notificationError = new CKEDITOR.plugins.notification(editorInstance, { message: editorInstance.lang.autosave.localStorageFull, type: 'warning' });
+            notificationError.show();
+        } else {
+            var messageType = config.messageType != null ? config.messageType : "notification";
+
+            if (editorInstance.plugins.textselection && messageType == "statusbar") {
+                messageType = "notification";
+            }
+
+            if (messageType == "statusbar") {
                 var autoSaveMessage = document.getElementById(autoSaveMessageId(editorInstance));
 
                 if (autoSaveMessage) {
                     autoSaveMessage.className = "show";
 
-                    setTimeout(function() {
+                    setTimeout(function () {
                         autoSaveMessage.className = "hidden";
                     }, 2000);
                 }
-        } else if (messageType == "notification") {
-            var notification = new CKEDITOR.plugins.notification(editorInstance, { message: editorInstance.lang.autosave.autoSaveMessage, type: 'success' });
-            notification.show();
+            } else if (messageType == "notification") {
+                var notification = new CKEDITOR.plugins.notification(editorInstance, { message: editorInstance.lang.autosave.autoSaveMessage, type: 'success' });
+                notification.show();
+            }
         }
     }
 
@@ -293,4 +308,27 @@
             viewType: dialog.getContentElement('general', 'diffType').getValue() == "inline" ? 1 : 0
         }).outerHTML + '</div>');
     }
+
+    function isQuotaExceeded(e) {
+        var quotaExceeded = false;
+        if (e) {
+            if (e.code) {
+                switch (e.code) {
+                    case 22:
+                        quotaExceeded = true;
+                        break;
+                    case 1014:
+                        // Firefox
+                        if (e.name === 'NS_ERROR_DOM_QUOTA_REACHED') {
+                            quotaExceeded = true;
+                        }
+                        break;
+                }
+            } else if (e.number === -2147024882) {
+                // Internet Explorer 8
+                quotaExceeded = true;
+            }
+        }
+        return quotaExceeded;
+    }
 })();