From 6553180f206aa89c8bee646a3168c9cb22f73766 Mon Sep 17 00:00:00 2001
From: Kelly de Vries <kdv@me.com>
Date: Wed, 15 Jul 2015 15:07:27 -0700
Subject: [PATCH 1/2] generate cookie on lti_launch, add LTI_header_display
 function to call in header.php

---
 wp-content/plugins/candela-lti/candela-lti.php                 | 3 +--
 .../plugins/candela-utility/themes/washington/functions.php    | 3 +++
 .../plugins/candela-utility/themes/washington/header.php       | 2 +-
 3 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/wp-content/plugins/candela-lti/candela-lti.php b/wp-content/plugins/candela-lti/candela-lti.php
index 134f0261..0e78720f 100644
--- a/wp-content/plugins/candela-lti/candela-lti.php
+++ b/wp-content/plugins/candela-lti/candela-lti.php
@@ -102,7 +102,7 @@ public static function deactivate() {
    */
   public static function lti_launch() {
     global $wp;
-
+    setcookie('content_only', 1, time()+3600, COOKIEPATH, COOKIE_DOMAIN);
     // allows deep links with an LTI launch urls like:
     // candela/api/lti/BLOGID?page_title=page_name
     // candela/api/lti/BLOGID?page_title=section_name%2Fpage_name
@@ -643,4 +643,3 @@ public static function remove_db_table() {
   }
 
 }
-
diff --git a/wp-content/plugins/candela-utility/themes/washington/functions.php b/wp-content/plugins/candela-utility/themes/washington/functions.php
index d861dad7..3be0eb87 100644
--- a/wp-content/plugins/candela-utility/themes/washington/functions.php
+++ b/wp-content/plugins/candela-utility/themes/washington/functions.php
@@ -124,3 +124,6 @@ function add_iframe_resize_message() {
   );
 
 }
+	function LTI_header_display() {
+		isset($_COOKIE['content_only']);
+	}
diff --git a/wp-content/plugins/candela-utility/themes/washington/header.php b/wp-content/plugins/candela-utility/themes/washington/header.php
index 99b9091a..1e5dc0b2 100644
--- a/wp-content/plugins/candela-utility/themes/washington/header.php
+++ b/wp-content/plugins/candela-utility/themes/washington/header.php
@@ -76,7 +76,7 @@
           <a href="#main-content">Skip to main content</a>
         </div>
 
-        <?php if (!isset($_GET['content_only'])) { ?>
+        <?php if (LTI_header_display()) { ?>
         <div class="row">
           <nav role="navigation">
             <!-- Book Title -->

From fbc8f9d578d2126cc9b9fef298499b027c6ddd84 Mon Sep 17 00:00:00 2001
From: Kelly de Vries <kdv@me.com>
Date: Wed, 15 Jul 2015 15:08:59 -0700
Subject: [PATCH 2/2] remove content_only url endings in lti_launch redirects

---
 wp-content/plugins/candela-lti/candela-lti.php | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/wp-content/plugins/candela-lti/candela-lti.php b/wp-content/plugins/candela-lti/candela-lti.php
index 0e78720f..ea4435fe 100644
--- a/wp-content/plugins/candela-lti/candela-lti.php
+++ b/wp-content/plugins/candela-lti/candela-lti.php
@@ -117,7 +117,7 @@ public static function lti_launch() {
 
       // todo make all the hide_* parameters copy over?
       // If it's a deep LTI link default to showing content_only
-      wp_redirect( get_bloginfo('wpurl') . $slash . $page . "?content_only" );
+      wp_redirect( get_bloginfo('wpurl') . $slash . $page );
       exit;
     }
 
@@ -125,7 +125,7 @@ public static function lti_launch() {
     // candela/api/lti/BLOGID?page_id=10
     if ( ! empty($wp->query_vars['page_id'] ) && is_numeric($wp->query_vars['page_id']) ) {
       switch_to_blog((int)$wp->query_vars['blog']);
-      wp_redirect( get_bloginfo('wpurl') . "?p=" . $wp->query_vars['page_id'] . "&content_only" );
+      wp_redirect( get_bloginfo('wpurl') . "?p=" . $wp->query_vars['page_id'] );
       exit;
     }
 
@@ -133,7 +133,7 @@ public static function lti_launch() {
     // custom_page_id=10
     if ( ! empty($wp->query_vars['custom_page_id'] ) && is_numeric($wp->query_vars['custom_page_id']) ) {
       switch_to_blog((int)$wp->query_vars['blog']);
-      wp_redirect( get_bloginfo('wpurl') . "?p=" . $wp->query_vars['custom_page_id'] . "&content_only" );
+      wp_redirect( get_bloginfo('wpurl') . "?p=" . $wp->query_vars['custom_page_id'] );
       exit;
     }