From 2e7c219b0be015f345e1cec51acdbb173a79fed9 Mon Sep 17 00:00:00 2001
From: Alexander Ebert <ebert@woltlab.com>
Date: Tue, 10 Jan 2017 20:21:03 +0100
Subject: [PATCH] Fixed missing existence check

---
 com.woltlab.wcf/templates/wysiwyg.tpl         |  2 ++
 .../install/files/acp/templates/wysiwyg.tpl   |  2 ++
 .../3rdParty/redactor2/plugins/WoltLabLine.js | 29 +++++++++++++++++++
 3 files changed, 33 insertions(+)
 create mode 100644 wcfsetup/install/files/js/3rdParty/redactor2/plugins/WoltLabLine.js

diff --git a/com.woltlab.wcf/templates/wysiwyg.tpl b/com.woltlab.wcf/templates/wysiwyg.tpl
index c0f187b7ec..34786632c3 100644
--- a/com.woltlab.wcf/templates/wysiwyg.tpl
+++ b/com.woltlab.wcf/templates/wysiwyg.tpl
@@ -28,6 +28,7 @@
 			'{@$__wcf->getPath()}js/3rdParty/redactor2/plugins/WoltLabInlineCode.js?v={@LAST_UPDATE_TIME}',
 			'{@$__wcf->getPath()}js/3rdParty/redactor2/plugins/WoltLabInsert.js?v={@LAST_UPDATE_TIME}',
 			'{@$__wcf->getPath()}js/3rdParty/redactor2/plugins/WoltLabKeydown.js?v={@LAST_UPDATE_TIME}',
+			'{@$__wcf->getPath()}js/3rdParty/redactor2/plugins/WoltLabLine.js?v={@LAST_UPDATE_TIME}',
 			'{@$__wcf->getPath()}js/3rdParty/redactor2/plugins/WoltLabLink.js?v={@LAST_UPDATE_TIME}',
 			'{@$__wcf->getPath()}js/3rdParty/redactor2/plugins/WoltLabMedia.js?v={@LAST_UPDATE_TIME}',
 			'{@$__wcf->getPath()}js/3rdParty/redactor2/plugins/WoltLabMention.js?v={@LAST_UPDATE_TIME}',
@@ -202,6 +203,7 @@
 					{if $__wcf->getBBCodeHandler()->isAvailableBBCode('img')}'WoltLabImage',{/if}
 					'WoltLabInlineCode',
 					'WoltLabInsert',
+					'WoltLabLine',
 					{if $__wcf->getBBCodeHandler()->isAvailableBBCode('url')}'WoltLabLink',{/if}
 					'WoltLabModal',
 					'WoltLabObserve',
diff --git a/wcfsetup/install/files/acp/templates/wysiwyg.tpl b/wcfsetup/install/files/acp/templates/wysiwyg.tpl
index c0f187b7ec..34786632c3 100644
--- a/wcfsetup/install/files/acp/templates/wysiwyg.tpl
+++ b/wcfsetup/install/files/acp/templates/wysiwyg.tpl
@@ -28,6 +28,7 @@
 			'{@$__wcf->getPath()}js/3rdParty/redactor2/plugins/WoltLabInlineCode.js?v={@LAST_UPDATE_TIME}',
 			'{@$__wcf->getPath()}js/3rdParty/redactor2/plugins/WoltLabInsert.js?v={@LAST_UPDATE_TIME}',
 			'{@$__wcf->getPath()}js/3rdParty/redactor2/plugins/WoltLabKeydown.js?v={@LAST_UPDATE_TIME}',
+			'{@$__wcf->getPath()}js/3rdParty/redactor2/plugins/WoltLabLine.js?v={@LAST_UPDATE_TIME}',
 			'{@$__wcf->getPath()}js/3rdParty/redactor2/plugins/WoltLabLink.js?v={@LAST_UPDATE_TIME}',
 			'{@$__wcf->getPath()}js/3rdParty/redactor2/plugins/WoltLabMedia.js?v={@LAST_UPDATE_TIME}',
 			'{@$__wcf->getPath()}js/3rdParty/redactor2/plugins/WoltLabMention.js?v={@LAST_UPDATE_TIME}',
@@ -202,6 +203,7 @@
 					{if $__wcf->getBBCodeHandler()->isAvailableBBCode('img')}'WoltLabImage',{/if}
 					'WoltLabInlineCode',
 					'WoltLabInsert',
+					'WoltLabLine',
 					{if $__wcf->getBBCodeHandler()->isAvailableBBCode('url')}'WoltLabLink',{/if}
 					'WoltLabModal',
 					'WoltLabObserve',
diff --git a/wcfsetup/install/files/js/3rdParty/redactor2/plugins/WoltLabLine.js b/wcfsetup/install/files/js/3rdParty/redactor2/plugins/WoltLabLine.js
new file mode 100644
index 0000000000..0ed6403283
--- /dev/null
+++ b/wcfsetup/install/files/js/3rdParty/redactor2/plugins/WoltLabLine.js
@@ -0,0 +1,29 @@
+$.Redactor.prototype.WoltLabLine = function() {
+	"use strict";
+	
+	return {
+		init: function() {
+			this.line.removeOnBackspace = (function () {
+				if (!this.utils.isCollapsed())
+				{
+					return;
+				}
+				
+				var $block = $(this.selection.block());
+				if ($block.length === 0 || !this.utils.isStartOfElement($block))
+				{
+					return;
+				}
+				
+				// if hr is previous element
+				var $prev = $block.prev();
+				// WoltLab modification: check was for `$prev` (always true) instead of `$prev.length`
+				if ($prev.length && $prev[0].tagName === 'HR')
+				{
+					e.preventDefault();
+					$prev.remove();
+				}
+			}).bind(this);
+		}
+	};
+};
-- 
2.20.1