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//  HTMLNode.h
//  StackOverflow
//  Created by Ben Reeves on 09/03/2010.
//  Copyright 2010 Ben Reeves. All rights reserved.
#import <Foundation/Foundation.h>
#import <libxml/HTMLparser.h>
#import "HTMLParser.h"
@class HTMLParser;
#define ParsingDepthUnlimited 0
#define ParsingDepthSame -1
#define ParsingDepth size_t
typedef enum
	HTMLHrefNode,
	HTMLTextNode,
	HTMLUnkownNode,
	HTMLCodeNode,
	HTMLSpanNode,
	HTMLPNode,
	HTMLLiNode,
	HTMLUlNode,
	HTMLImageNode,
	HTMLOlNode,
	HTMLStrongNode,
	HTMLPreNode,
	HTMLBlockQuoteNode,
} HTMLNodeType;
@interface HTMLNode : NSObject 
	xmlNode * _node; //HTMLParser is a real owner for the "_node"
//Init with a lib xml node (shouldn't need to be called manually)
//Use [parser doc] to get the root Node
-(id)initWithXMLNode:(xmlNode*)xmlNode;
//Returns a single child of class
-(HTMLNode*)findChildOfClass:(NSString*)className;
//Returns all children of class
-(NSArray*)findChildrenOfClass:(NSString*)className;
//Finds a single child with a matching attribute 
//set allowPartial to match partial matches 
//e.g. <img src="http://www.google.com> [findChildWithAttribute:@"src" matchingName:"google.com" allowPartial:TRUE]
-(HTMLNode*)findChildWithAttribute:(NSString*)attribute matchingName:(NSString*)className allowPartial:(BOOL)partial;
//Finds all children with a matching attribute
-(NSArray*)findChildrenWithAttribute:(NSString*)attribute matchingName:(NSString*)className allowPartial:(BOOL)partial;
//Gets the attribute value matching tha name
-(NSString*)getAttributeNamed:(NSString*)name;
//Find childer with the specified tag name
-(NSArray*)findChildTags:(NSString*)tagName;
//Looks for a tag name e.g. "h3"
-(HTMLNode*)findChildTag:(NSString*)tagName;
//Returns the first child element
-(HTMLNode*)firstChild;
//Returns the plaintext contents of node
-(NSString*)contents;
//Returns the plaintext contents of this node + all children
-(NSString*)allContents;
//Returns the html contents of the node 
-(NSString*)rawContents;
//Returns next sibling in tree
-(HTMLNode*)nextSibling;
//Returns previous sibling in tree
-(HTMLNode*)previousSibling;
//Returns the class name
-(NSString*)className;
//Returns the tag name
-(NSString*)tagName;
//Returns the parent
-(HTMLNode*)parent;
//Returns the first level of children
-(NSArray*)children;
//Returns the node type if know
-(HTMLNodeType)nodetype;
//C functions for minor performance increase in tight loops
NSString * getAttributeNamed(xmlNode * node, const char * nameStr);
void setAttributeNamed(xmlNode * node, const char * nameStr, const char * value);
HTMLNodeType nodeType(xmlNode* node);
NSString * allNodeContents(xmlNode*node);
NSString * rawContentsOfNode(xmlNode * node);

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