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 = ""
		
		def handle_starttag(self,tag,attrs):
			if tag == "img":
				altText = False
				for attr in attrs:
					if attr[0] == "alt":
						altText = html.escape(attr[1])
						break
				
				for attr in attrs:
					if attr[0] == "src":
						url = attr[1]
						if not altText: altText = url.rsplit("/")[-1]
						self.output += 'img:<a href="' +html.escape(url)+ '">' +html.escape(altText)+ '</a>'
						return
				
				return
			
			self.output += "<" +tag
			for attr in attrs:
				if attr[1] != None:
					self.output += ' ' +html.escape(attr[0])+ '="' +html.escape(attr[1])+ '"'
				else:
					self.output += ' ' +html.escape(attr[0])
			self.output += ">"
		
		def handle_endtag(self,tag):
			if tag in ["img"]: return
			self.output += "</" +html.escape(tag)+ ">"
		
		def handle_data(self,data):
			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()