# -*- coding: utf-8 -*-

"""
/***************************************************************************
Name                 : DB Manager
Description          : Database manager plugin for QuantumGIS
Date                 : May 23, 2011
copyright            : (C) 2011 by Giuseppe Sucameli
email                : brush.tyler@gmail.com

 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
"""

from PyQt4.QtCore import *
from PyQt4.QtGui import *

class HtmlContent:
	def __init__(self, data):
		self.data = data if not isinstance(data, HtmlContent) else data.data

	def toHtml(self):
		if isinstance(self.data, list) or isinstance(self.data, tuple):
			html = u''
			for item in self.data:
				html += HtmlContent(item).toHtml()
			return html

		if hasattr(self.data, 'toHtml' ):
			return self.data.toHtml()

		html = unicode(self.data).replace("\n", "<br>")
		return html

	def hasContents(self):
		if isinstance(self.data, list) or isinstance(self.data, tuple):
			empty = True
			for item in self.data:
				if item.hasContents():
					empty = False
					break
			return not empty

		if hasattr(self.data, 'hasContents'):
			return self.data.hasContents()

		return len(self.data) > 0

class HtmlElem:
	def __init__(self, tag, data, attrs=None):
		self.tag = tag
		self.data = data if isinstance(data, HtmlContent) else HtmlContent(data)
		self.attrs = attrs if attrs != None else dict()
		if self.attrs.has_key('tag'):
			self.setTag( self.attrs['tag'] )
			del self.attrs['tag']

	def setTag(self, tag):
		self.tag = tag

	def getOriginalData(self):
		return self.data.data

	def setAttr(self, name, value):
		self.attrs[name] = value

	def getAttrsHtml(self):
		html = u''
		for k, v in self.attrs.iteritems():
			html += u' %s="%s"' % ( k, QStringList(v).join(' ') )
		return html

	def openTagHtml(self):
		return u"<%s%s>" % ( self.tag, self.getAttrsHtml() )

	def closeTagHtml(self):
		return u"</%s>" % self.tag

	def toHtml(self):
		return u"%s%s%s" % ( self.openTagHtml(), self.data.toHtml(), self.closeTagHtml() )

	def hasContents(self):
		return self.data.toHtml() != ""


class HtmlParagraph(HtmlElem):
	def __init__(self, data, attrs=None):
		HtmlElem.__init__(self, 'p', data, attrs)


class HtmlListItem(HtmlElem):
	def __init__(self, data, attrs=None):
		HtmlElem.__init__(self, 'li', data, attrs)

class HtmlList(HtmlElem):
	def __init__(self, items, attrs=None):
		# make sure to have HtmlListItem items
		items = list(items)
		for i, item in enumerate(items):
			if not isinstance(item, HtmlListItem):
				items[i] = HtmlListItem( item )
		HtmlElem.__init__(self, 'ul', items, attrs)


class HtmlTableCol(HtmlElem):
	def __init__(self, data, attrs=None):
		HtmlElem.__init__(self, 'td', data, attrs)

	def closeTagHtml(self):
		# FIX INVALID BEHAVIOR: an empty cell as last table's cell break margins
		return u"&nbsp;%s" % HtmlElem.closeTagHtml(self)

class HtmlTableRow(HtmlElem):
	def __init__(self, cols, attrs=None):
		# make sure to have HtmlTableCol items
		cols = list(cols)
		for i, c in enumerate(cols):
			if not isinstance(c, HtmlTableCol):
				cols[i] = HtmlTableCol( c )
		HtmlElem.__init__(self, 'tr', cols, attrs)

class HtmlTableHeader(HtmlTableRow):
	def __init__(self, cols, attrs=None):
		HtmlTableRow.__init__(self, cols, attrs)
		for c in self.getOriginalData():
			c.setTag('th')

class HtmlTable(HtmlElem):
	def __init__(self, rows, attrs=None):
		# make sure to have HtmlTableRow items
		rows = list(rows)
		for i, r in enumerate(rows):
			if not isinstance(r, HtmlTableRow):
				rows[i] = HtmlTableRow( r )
		HtmlElem.__init__(self, 'table', rows, attrs)


class HtmlWarning(HtmlContent):
	def __init__(self, data):
		data = [ '<img src=":/icons/warning-20px.png">&nbsp;&nbsp; ', data ]
		HtmlContent.__init__(self, data)


class HtmlSection(HtmlContent):
	def __init__(self, title, content=None):
		data = [ '<div class="section"><h2>', title, '</h2>' ]
		if content != None:
			data.extend( [ '<div>', content, '</div>' ] )
		data.append( '</div>' )
		HtmlContent.__init__(self, data)

