From ee4162a5659dd4eb60e5613187b0ec04ef89c272 Mon Sep 17 00:00:00 2001
From: Uwe Steinmann <steinm@debian.org>
Date: Tue, 31 Oct 2023 18:51:03 +0100
Subject: [PATCH] check if $previewer is set

---
 views/bootstrap/class.Bootstrap.php   | 4 ++--
 views/bootstrap4/class.Bootstrap4.php | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/views/bootstrap/class.Bootstrap.php b/views/bootstrap/class.Bootstrap.php
index 9e55e762d..f69ec0da9 100644
--- a/views/bootstrap/class.Bootstrap.php
+++ b/views/bootstrap/class.Bootstrap.php
@@ -3170,7 +3170,7 @@ $('body').on('click', '[id^=\"table-row-folder\"] td:nth-child(2)', function(ev)
 			if(!$skipcont)
 				$content .= $this->documentListRowStart($document);
 
-			$previewer->createPreview($latestContent);
+			if($previewer) $previewer->createPreview($latestContent);
 			$version = $latestContent->getVersion();
 			
 			if($ec = $this->callHook('documentListRowExtraContent', $document, $latestContent))
@@ -3184,7 +3184,7 @@ $('body').on('click', '[id^=\"table-row-folder\"] td:nth-child(2)', function(ev)
 				else {
 					if($accessop->check_controller_access('Download', array('action'=>'version')))
 						$content .= "<a draggable=\"false\" href=\"".$this->params['settings']->_httpRoot."op/op.Download.php?documentid=".$docID."&version=".$version."\">";
-					if($previewer->hasPreview($latestContent)) {
+					if($previewer && $previewer->hasPreview($latestContent)) {
 						$content .= "<img draggable=\"false\" class=\"mimeicon\" width=\"".$previewwidth."\" src=\"".$this->params['settings']->_httpRoot."op/op.Preview.php?documentid=".$document->getID()."&version=".$latestContent->getVersion()."&width=".$previewwidth."\" title=\"".htmlspecialchars($latestContent->getMimeType())."\">";
 					} else {
 						$content .= "<img draggable=\"false\" class=\"mimeicon\" width=\"".$previewwidth."\" src=\"".$this->getMimeIcon($latestContent->getFileType())."\" ".($previewwidth ? "width=\"".$previewwidth."\"" : "")."\" title=\"".htmlspecialchars($latestContent->getMimeType())."\">";
diff --git a/views/bootstrap4/class.Bootstrap4.php b/views/bootstrap4/class.Bootstrap4.php
index f718265e4..01830c2e6 100644
--- a/views/bootstrap4/class.Bootstrap4.php
+++ b/views/bootstrap4/class.Bootstrap4.php
@@ -3244,7 +3244,7 @@ $('body').on('click', '[id^=\"table-row-folder\"] td:nth-child(2)', function(ev)
 			if(!$skipcont)
 				$content .= $this->documentListRowStart($document);
 
-			$previewer->createPreview($latestContent);
+			if($previewer) $previewer->createPreview($latestContent);
 			$version = $latestContent->getVersion();
 			
 			if($ec = $this->callHook('documentListRowExtraContent', $document, $latestContent))
@@ -3258,7 +3258,7 @@ $('body').on('click', '[id^=\"table-row-folder\"] td:nth-child(2)', function(ev)
 				else {
 					if($accessop->check_controller_access('Download', array('action'=>'version')))
 						$content .= "<a draggable=\"false\" href=\"".$this->params['settings']->_httpRoot."op/op.Download.php?documentid=".$docID."&version=".$version."\">";
-					if($previewer->hasPreview($latestContent)) {
+					if($previewer && $previewer->hasPreview($latestContent)) {
 						$content .= "<img draggable=\"false\" class=\"mimeicon\" width=\"".$previewwidth."\" src=\"".$this->params['settings']->_httpRoot."op/op.Preview.php?documentid=".$document->getID()."&version=".$latestContent->getVersion()."&width=".$previewwidth."\" title=\"".htmlspecialchars($latestContent->getMimeType())."\">";
 					} else {
 						$content .= "<img draggable=\"false\" class=\"mimeicon\" width=\"".$previewwidth."\" src=\"".$this->getMimeIcon($latestContent->getFileType())."\" ".($previewwidth ? "width=\"".$previewwidth."\"" : "")."\" title=\"".htmlspecialchars($latestContent->getMimeType())."\">";