From 3c98cd87a75bd16257d433644990be573710188e Mon Sep 17 00:00:00 2001
From: Oliver Walters <oliver.henry.walters@gmail.com>
Date: Thu, 19 Sep 2019 23:29:03 +1000
Subject: [PATCH] Use localStorage rather than sessionStorage for storing user
 prefs

- Also create some helper functions
---
 .../static/script/inventree/inventree.js      | 43 +++++++++++++++++++
 InvenTree/part/templates/part/category.html   |  6 +--
 InvenTree/stock/templates/stock/location.html |  6 +--
 3 files changed, 49 insertions(+), 6 deletions(-)

diff --git a/InvenTree/InvenTree/static/script/inventree/inventree.js b/InvenTree/InvenTree/static/script/inventree/inventree.js
index 703c49218b..390aba92ab 100644
--- a/InvenTree/InvenTree/static/script/inventree/inventree.js
+++ b/InvenTree/InvenTree/static/script/inventree/inventree.js
@@ -136,4 +136,47 @@ function imageHoverIcon(url) {
         `;
 
     return html;
+}
+
+function inventreeSave(name, value) {
+    /*
+     * Save a key:value pair to local storage
+     */
+
+    var key = "inventree-" + name;
+    localStorage.setItem(key, value);
+}
+
+function inventreeLoad(name) {
+    /* 
+     * Retrieve a key:value pair from local storage
+     */
+
+    var key = "inventree-" + name;
+
+    return localStorage.getItem(key);
+}
+
+function inventreeLoadInt(name) {
+    /*
+     * Retrieve a value from local storage, and attempt to cast to integer
+     */
+
+    var data = inventreeLoad(name);
+
+    return parseInt(data, 10);
+}
+
+function inventreeLoadFloat(name) {
+
+    var data = inventreeLoad(name);
+
+    return parseFloat(data);
+}
+
+function inventreeDel(name) {
+
+    var key = 'inventree-' + name;
+
+    localStorage.removeItem(key);
 }
\ No newline at end of file
diff --git a/InvenTree/part/templates/part/category.html b/InvenTree/part/templates/part/category.html
index d9913482fd..f48e06e6d7 100644
--- a/InvenTree/part/templates/part/category.html
+++ b/InvenTree/part/templates/part/category.html
@@ -67,16 +67,16 @@
 {% block js_ready %}
 {{ block.super }}
 
-    if (sessionStorage.getItem("inventree-show-part-categories")) {
+    if (inventreeLoadInt("show-part-cats") == 1) {
         $("#collapse-item-categories").collapse('show');
     }
 
     $("#collapse-item-categories").on('shown.bs.collapse', function() {
-        sessionStorage.setItem('inventree-show-part-categories', 1);
+        inventreeSave('show-part-cats', 1);
     });
     
     $("#collapse-item-categories").on('hidden.bs.collapse', function() {
-        sessionStorage.removeItem('inventree-show-part-categories');
+        inventreeDel('show-part-cats');
     });
 
     $("#cat-create").click(function() {
diff --git a/InvenTree/stock/templates/stock/location.html b/InvenTree/stock/templates/stock/location.html
index 6a0d05cfcc..929dd7baf8 100644
--- a/InvenTree/stock/templates/stock/location.html
+++ b/InvenTree/stock/templates/stock/location.html
@@ -55,16 +55,16 @@
 {% block js_ready %}
 {{ block.super }}
 
-    if (sessionStorage.getItem("inventree-show-part-locations")) {
+    if (inventreeLoadInt("show-part-locs") == 1) {
         $("#collapse-item-locations").collapse('show');
     }
 
     $("#collapse-item-locations").on('shown.bs.collapse', function() {
-        sessionStorage.setItem('inventree-show-part-locations', 1);
+        inventreeSave('show-part-locs', 1);
     });
 
     $("#collapse-item-locations").on('hidden.bs.collapse', function() {
-        sessionStorage.removeItem('inventree-show-part-locations');
+        inventreeDel('show-part-locs');
     });
 
     $("#stock-export").click(function() {