From c09adc2f96ec0b86b127bcda7089245149ca8f68 Mon Sep 17 00:00:00 2001
From: iska <iska.gp@gmail.com>
Date: Fri, 27 Nov 2015 01:10:07 +0100
Subject: [PATCH] Add Node properties for previous and next sibling elements

---
 HTMLKit/HTMLNode.h |  4 ++++
 HTMLKit/HTMLNode.m | 18 ++++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/HTMLKit/HTMLNode.h b/HTMLKit/HTMLNode.h
index 6eaa8b3..1549d30 100644
--- a/HTMLKit/HTMLNode.h
+++ b/HTMLKit/HTMLNode.h
@@ -62,6 +62,10 @@ typedef NS_ENUM(unsigned short, HTMLDocumentPosition)
 
 @property (nonatomic, strong, readonly) HTMLNode *nextSibling;
 
+@property (nonatomic, strong, readonly) HTMLElement *previousSiblingElement;
+
+@property (nonatomic, strong, readonly) HTMLElement *nextSiblingElement;
+
 @property (nonatomic, copy) NSString *textContent;
 
 @property (nonatomic, strong, readonly)	NSString *outerHTML;
diff --git a/HTMLKit/HTMLNode.m b/HTMLKit/HTMLNode.m
index 74d3093..ebedf36 100644
--- a/HTMLKit/HTMLNode.m
+++ b/HTMLKit/HTMLNode.m
@@ -99,6 +99,24 @@
 	return [_parentNode childNodeAtIndex:index + 1];
 }
 
+- (HTMLElement *)previousSiblingElement
+{
+	HTMLNode *node = self.previousSibling;
+	while (node && node.nodeType != HTMLNodeElement) {
+		node = node.previousSibling;
+	}
+	return node.asElement;
+}
+
+- (HTMLElement *)nextSiblingElement
+{
+	HTMLNode *node = self.previousSibling;
+	while (node && node.nodeType != HTMLNodeElement) {
+		node = node.nextSibling;
+	}
+	return node.asElement;
+}
+
 - (NSString *)textContent
 {
 	return nil;