global HTMLParser
from html.parser import HTMLParser

global html
import html

global browserDoc
class browserDoc(QTextBrowser):
	def __init__(self,*args,**kwargs):
		super().__init__(*args,**kwargs)
		self.setOpenLinks(False)
		style = ""
		if (config["accessibility"]["colorBackground"] != "default"):
			style += "background-color: " +config["accessibility"]["colorBackground"] + ";"
		
		if (config["accessibility"]["colorText"] != "default"):
			style += "color: " +config["accessibility"]["colorText"]+ ";"
		
		self.setStyleSheet("QTextBrowser { " +style+ " }")
		self.anchorClicked.connect(self.cAnchorClicked)
	
	class cHtmlParser(HTMLParser):
		def __init__(self):
			HTMLParser.__init__(self)
			self.output = ""
			self.voidElements = ["area","base","br","col","hr","img","input","link","meta","param","command","keygen","source"]
			self.blackList = ["img","script","style"]
			self.tagDir = []
		
		def handle_starttag(self,tag,attrs):
			if not tag in self.voidElements:
				self.tagDir.append(tag)
			
			if tag in self.blackList: return
			
			self.output += "<" +html.escape(tag)
			for attr in attrs:
				self.output += " " +html.escape(attr[0])
				if attr[1] != None:
					self.output += '="' +html.escape(attr[1])+ '"'
			self.output += ">"
		
		def handle_endtag(self,tag):
			if not tag in self.voidElements:
				index = len(self.tagDir) - 1
				while index >= 0:
					if self.tagDir[index] == tag:
						self.tagDir = self.tagDir[index + 1:]
						break
					index -= 1
			self.output += "</" +html.escape(tag)+ ">"
		
		def handle_data(self,data):
			curTag = ""
			if len(self.tagDir) > 0:
				curTag = self.tagDir[-1]
			if curTag in self.blackList: return
			self.output += data
	
	def cRenderHtml(self,htm):
		parser = self.cHtmlParser()
		parser.feed(htm)
		
		self.clear()
		self.insertHtml(parser.output)
		self.update()
	
	def cAnchorClicked(self,url):
		url = str(url.toEncoded(),"utf-8")
		browserWindow = self.parent()
		curUrl = browserWindow.cDocumentInfo["url"]
		curUrlParsed = parseUrl(curUrl)
		urlParsed = parseUrl(url)
		print("---")
		print("navigating from: " +curUrl)
		print("to: " +url)
		if urlParsed["protocol"] == "": # is relative
			if url[0] == "#":
				curUrlParsed["anchor"] = url[1:]
				url = unparseUrl(curUrlParsed)
			elif url[:2] == "//":
				url = curUrlParsed["protocol"] + ":" + url
			elif url[0] == "/":
				urlParsed["protocol"] = curUrlParsed["protocol"]
				urlParsed["domain"] = curUrlParsed["domain"]
				urlParsed["path"] = urlParsed["path"][1:]
				url = unparseUrl(urlParsed)
			else:
				urlParsed["protocol"] = curUrlParsed["protocol"]
				urlParsed["domain"] = curUrlParsed["domain"]
				while len(curUrlParsed["path"]) > 0 and curUrlParsed["path"][-1] == "/": curUrlParsed["path"] = curUrlParsed["path"][:-1]
				urlParsed["path"] = curUrlParsed["path"] + "/" + url
				url = unparseUrl(urlParsed)
		browserWindow.cUrlBar.setText(url)
		browserWindow.cNavigate()