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import re
import string
import socket
import urllib
import string
import xml.dom.minidom
import types
from Products.PageTemplates.PageTemplateFile import PageTemplateFile
from OFS.SimpleItem import SimpleItem
from Globals import package_home
import Globals
from AccessControl import ClassSecurityInfo
import os.path

displayTypes = ['ZSQLExtendFolder','ZSQLBibliography','ECHO_group','ECHO_collection','ECHO_resource','ECHO_link','ECHO_sqlElement','ECHO_pageTemplate','ECHO_externalLink','ImageCollectionIFrame','VLP_resource','VLP_essay','ECHO_ZCatalogElement','ImageCollection','versionedFileFolder','ECHO_movie']

def content_html(self,type):
        """template fuer content"""
        #templates = self.ZopeFind(self.aq_parent,obj_ids=[type+"_template"])
        #
        #if templates:
        #    return templates[0][1]()

        if hasattr(self,type+"_template"):
            obj=getattr(self,type+"_template")
            return obj()
        else:
	    pt=PageTemplateFile(os.path.join(package_home(globals()),'zpt','ECHO_%s_template_standard.zpt'%type)).__of__(self)
            pt.content_type="text/html"
            return pt()
    
    

class ECHO_basis:
    """basis eigenschaften fuer echo objekte"""
    security=ClassSecurityInfo()
    security.declarePublic('getImageTag')
    def getImageTag(self):
	    """sollte uerberschrieben werden, falls von der Klasse eine imagetag zurueckkommt"""
	    
	    return ""
    
    def showRDF(self):
	    """showrdf"""
            self.REQUEST.RESPONSE.setHeader('Content-Type','text/xml')
	    ret="""<?xml version="1.0" encoding="utf-8"?>\n<RDF:RDF xmlns:RDF="http://www.w3.org/1999/02/22-rdf-syntax-ns#"  xmlns:ECHONAVIGATION="http://www.echo.eu/rdf#">\n"""

	    ret+=self.getRDF(urn="echo:collectionroot")+"\n"


	    ret+="""</RDF:RDF>"""
    	    return ret 

  
    def RDF(self):
	    """showrdf"""
            self.REQUEST.RESPONSE.setHeader('Content-Type','text/xml')
	    ret="""<?xml version="1.0" encoding="utf-8"?>\n<RDF:RDF xmlns:RDF="http://www.w3.org/1999/02/22-rdf-syntax-ns#"  xmlns:ECHONAVIGATION="http://www.echo.eu/rdf#">\n"""

	    ret+=self.getRDF(urn=self.absolute_url())+"\n"


	    ret+="""</RDF:RDF>"""
    	    return ret 

  
    def createSubElementRDF(self,urn=None):
	    """rdf list"""
	    if not urn:
		    urn=self.absolute_url()
	    ret=""

	    rettemp="""<RDF:Seq RDF:about="%s">\n"""%urn
	    flag=0
	    
	    li="""<RDF:li RDF:resource="%s" />\n"""
	    if not ('<error>' in self.getFullTextXML(noredirect='Yes')):
		    nurn=self.absolute_url()+'/getFullTextXML'
		    rettemp+=li%nurn
		    flag=1
	    if not ('<error>' in self.getImageView(noredirect='Yes')):
		    nurn=self.absolute_url()+'/getImageView'
		    rettemp+=li%nurn
		    flag=1


	    if not ('<error>' in self.showMetaDataXML()):
		    nurn=self.absolute_url()+'/showMetaDataXML'
		    rettemp+=li%nurn
		    flag=1
		    
	    rettemp+="</RDF:Seq>"

	    if flag==1:
		    ret+=rettemp
		    
	    if not ('<error>' in self.getFullTextXML(noredirect='Yes')):
                    nurn=self.absolute_url()+'/getFullTextXML'	
		    ret+=getRDFDescription(self,self.absolute_url()+'/getFullTextXML',urn=nurn,nameDef="Fulltext",typeName="ECHO_fulltext")

	    if not ('<error>' in self.getImageView(noredirect='Yes')):
                    nurn=self.absolute_url()+'/getImageView'
		    ret+=getRDFDescription(self,self.absolute_url()+'/getImageView',urn=nurn,nameDef="Image View",typeName="ECHO_imageview")
		    
	    if not ('<error>' in self.showMetaDataXML()):
                    nurn=self.absolute_url()+'/showMetaDataXML'
		    ret+=getRDFDescription(self,self.absolute_url()+'/showMetaDataXML',urn=nurn,nameDef="Metadata",typeName="ECHO_metaData")

	    return ret
	    
    def content_html(self,type="collection"):
	    """template fuer content bei einbau und ECHO_Umgebung"""
	    
	    return content_html(self,type)
        
    def getTitle(self):
	"""title"""
	return self.decode(self.title)
	try:
		return self.title.encode('utf-8','ignore') 
	except:
		self.title=self.title.decode('iso-8859-1','ignore')[0:] #correnct conding error
		return self.title.encode('utf-8','ignore') 
	
    def getLabel(self):
	"""title"""
	if self.label=="":
		ret=self.getTitle
		if ret=="":
			ret=self.getId()
		return ret
	
	return self.decode(self.label)
	try:
		return self.label.encode('utf-8','ignore') 
	except:
		self.label=self.label.decode('iso-8859-1','ignore')[0:] #correnct conding error
		return self.label.encode('utf-8','ignore') 
	
    
    def changeECHOEntriesForm(self):
        """change Entries for the ECHO Navigation environment"""
        pt=PageTemplateFile(os.path.join(package_home(globals()),'zpt','changeECHOEntriesForm')).__of__(self)
        return pt()
    
    def changeECHOEntries(self,label,weight,description,queryString,RESPONSE=None):
        """change Entries for the ECHO Navigation environment
        @param label: label fuer die Navigation"""
        self.label=label
        self.weight=weight
        self.description=description
	self.queryString=queryString
        
        if RESPONSE:
            RESPONSE.redirect("manage_main")

    manage_options=({'label':'change ECHO Navigation Entries','action':'changeECHOEntriesForm'},)


    def hasOverview(self):
        """returns if there is an overview graphics"""
	return hasattr(self, 'overview')

    def hasParentOverview(self):
        """returns if the parent has an overview graphics"""
	return hasattr(self.aq_parent, 'overview')

    def getOverview(self):
        """map overview graphics"""
        #return self.aq_parent.ZopeFind(self.aq_parent,obj_ids=['overview'])[0][1]
	if self.hasOverview():
	    return getattr(self, 'overview')
	return None

    def getMapAreas(self):
        """returns the list of MapAreas"""
	# get all contained MapAreas
        areas = [res[1] for res in self.ZopeFind(self, obj_metatypes=('MapArea'))]
	return areas

    def addMapArea(self, newarea):
	"""add a map area to this object"""
	if (newarea.id is None):
	    # create new id
	    areas = self.getMapAreas()
	    newarea.id = "a%02d"%len(areas)
	self._setObject(newarea.id, newarea)

    def ECHO_graphicEntry(self):
        """change map coordinates"""
        if self.hasParentOverview():
            pt=zptFile(self, 'zpt/ECHO_draw.zpt')
            return pt()
        else:
            return "NO OVERVIEW GRAPHICS"

    def ECHO_addCoords(self,RESPONSE=None):
        """change or add MapArea"""
	#return self.REQUEST
	# change existing areas
	for area in self.getMapAreas():
	    id = area.getId()
	    if self.REQUEST.has_key('del.'+id):
		# delete this area
		self._delObject(id)
		# return to same menu
		if RESPONSE is not None:
		    RESPONSE.redirect('ECHO_graphicEntry')
		return
	    # modify this area
	    coordstring = self.REQUEST.get('coords.'+id, '')
	    coords = string.split(coordstring, ',')
	    angle = self.REQUEST.get('angle.'+id, '0')
	    type = self.REQUEST.get('type.'+id, 'area')
	    if len(coords) == 4:
		area.setCoordString(coordstring)
		area.setAngle(angle)
		area.setType(type)
	# add new area
	if self.REQUEST.has_key('add'):
	    coordstring = self.REQUEST.get('coords.new', '')
	    coords = string.split(coordstring, ',')
	    angle = self.REQUEST.get('angle.new', '0')
	    type = self.REQUEST.get('type.new', 'area')
	    if len(coords) == 4:
		coords.append(angle)
		area = MapArea(None, coords, type=type)
		self.addMapArea(area)
	# return to edit area menu
	if RESPONSE is not None:
	    RESPONSE.redirect('ECHO_graphicEntry')

    def createJSAreas(self, areas):
        """create area calls for JavaScript"""
        dynamical="\n"
        for ob in areas:
	    if ob.isTypeArrow():
	        dynamical+="""addArea('%s', 'overview', %s, 'arrow');\n"""%(ob.getFullId(),ob.getCoordString())
	    else:
	        dynamical+="""addArea('%s', 'overview', %s, 'area');\n"""%(ob.getFullId(),ob.getCoordString())
        return dynamical

    def createMapHead(self):
        """create javascript include and script tags for head"""
        pt=zptFile(self, 'zpt/ECHO_content_map_frag_js')
        return pt()

    def createMapImg(self):
	"""generate img-tag for map"""
	bt = BrowserCheck(self)
	tag = ""
	src = self.getOverview().absolute_url()
	if bt.isN4:
	    # N4 needs ilayer to create an id
	    tag += '<ilayer id="overview" visibility="show"><img src="%s"></ilayer>'%src
	else:
	    # img with id
	    tag += '<img id="overview" src="%s" />'%src
	return tag
        
    def createParentMapImg(self):
	"""generate img-tag for map of parent"""
	return self.aq_parent.createMapImg()

    def createMapLink(self, ob, text=None):
	"""generate map link"""
	bt = BrowserCheck(self)
	id = ob.getFullId()
	link = ob.getLinkId()
	if text is None:
	    text = ob.getLabel()
	if text is None:
	    text = "link"
	tiptext = ob.getText()
	tag = ""
	if bt.isN4:
	    # N4 needs layer for highlighting
	    tag += '<ilayer id="a.%s"><a onmouseover="highlightPair(\'%s\', true)" onmouseout="highlightPair(\'%s\', false)" href="%s" target="_blank"'%(id,id,id,link)
	    tag += ">" + text + "</a></ilayer>"
	else:
	    # a-element
	    tag = '<a id="a.%s" onmouseover="highlightPair(\'%s\', true)" onmouseout="highlightPair(\'%s\', false)" href="%s" target="_blank"'%(id,id,id,link)
	    if tiptext:
		tag += ' title="%s"'%tiptext
	    tag += ">" + text + "</a>"
	return tag

    def createMapAux(self, ob, arrowsrc="http://nausikaa2.rz-berlin.mpg.de/digitallibrary/servlet/Scaler/?dw=15&fn=icons/pfeil"):
	"""generate map link image, text and other stuff"""
	bt = BrowserCheck(self)
	id = ob.getFullId()
	link = ob.getLinkId()
	tiptext = ob.getText()
	tag = ""

	if bt.isN4:
	    # N4 needs layer and img elements
	    tag += '<layer id="i.%s" onmouseover="highlightPair(\'%s\', true)" onmouseout="highlightPair(\'%s\', false)">'%(id,id,id)
	    if ob.isTypeArrow():
	        rot = ob.angle
		tag += '<a href="%s"><img border="0" src="%s&rot=%s" /></a>'%(link,arrowsrc,rot)
	    else:
		tag += '<a href="%s"><img border="0" width="1000" height="1000" src="trans_img"'%(link)
		if tiptext:
		    tag += ' alt="%s"'%tiptext
		tag += ' /></a>'
	    tag += '</layer>'
	else:
	    # create a-element
	    tag = '<a id="b.%s" onmouseover="highlightPair(\'%s\', true)" onmouseout="highlightPair(\'%s\', false)" href="%s" target="_blank">'%(id,id,id,link)
	    if ob.isTypeArrow():
		rot = ob.angle
		if bt.isIEWin and bt.versIE > 5:
		    # IE/Win 5.5 has "feature" for PNG transparency
		    tag += '<span id="i.%s" style="position:absolute; top:-100px; left:-100px; border-style:none; border-width=1px; filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'%s&rot=%s\');"><img style="visibility:hidden" src="%s&rot=%s" /></span>'%(id,arrowsrc,rot,arrowsrc,rot)
		else:
		    # arrow image
		    tag += '<img id="i.%s" src="%s&rot=%s" border="1" style="position:absolute; top:-100px; left:-100px; border-style:none;" />'%(id,arrowsrc,rot)
	    else:
		if bt.isIE:
		    # IE needs transparent img for area
		    tag += '<img id="i.%s" border="0" style="position:absolute; top:-100px; left:-100px;" src="trans_img"'%(id)
		    if tiptext:
			tag += ' title="%s"'%tiptext
		    tag += " />"
		else:
		    # div for area
		    tag += '<div id="i.%s" style="position:absolute; top:-100px; left:-100px;"'%(id)
		    if tiptext:
			tag += ' title="%s"'%tiptext
		    tag += '> </div>'
	    tag += '</a>'
	return tag


    #ende der echo erweiterungen


def toList(field):
    """Einzelfeld in Liste umwandeln"""
    if type(field)==types.StringType:
        return [field]
    else:
        return field

def getText(nodelist):

    rc = ""
    for node in nodelist:
    	if node.nodeType == node.TEXT_NODE:
           rc = rc + node.data
    return rc

def getTextFromNode(nodename):
    nodelist=nodename.childNodes
    rc = ""
    for node in nodelist:
    	if node.nodeType == node.TEXT_NODE:
           rc = rc + node.data
    return rc


def readFieldFromXML(meta_url,parent,field):
	"""lesespezifisches metadatum"""
	
	try:
		dom=xml.dom.minidom.parse(meta_url)

	except:
		try:
			fh=urllib.urlopen(meta_url)
			dom=xml.dom.minidom.parse(fh)
	        except:
			return None
	if not dom: return None

	parent=dom.getElementsByTagName(parent)
	if not parent: return None

	field=parent[0].getElementsByTagName(field)

	if not field: return None

	return getText(field[0].childNodes)
	
	
	      
def urlopen(url):
	"""urlopen mit timeout"""
	socket.setdefaulttimeout(2)
	ret=urllib.urlopen(url)
	socket.setdefaulttimeout(5)
	return ret
#	urlopener = urllib.URLopener()
#
#	try:		
#		con = urlopener.open(url)
#		return con
#	except timeoutsocket.Timeout:
#		return None





def checkOnlyOneInGroup(object): 
	"""check if object is a group and if it containt only one element it return this element"""
	displayedObjects=object.ZopeFind(object,obj_metatypes=displayTypes)
	if len(displayedObjects)==1: # nur ein Object dann redirect auf dieses Object

		return displayedObjects[0][1]
	else:		return object

def getSubCols(self, sortfield=None, subColTypes=displayTypes, sortFieldMD=None,searchMD=None):
	
	
	def sort(x,y):
		return cmp(x[0],y[0])
	
	def sortfnc(sortfield,x,y):
		try:
			xa=x[1].getMDValue(sortfield)
		except:
			xa=""
		try:
			ya=y[1].getMDValue(sortfield)
		except:
			ya=""
		return cmp(xa,ya)
	
	sortWithMD = lambda sortfield : (lambda x,y : sortfnc(sortfield,x,y))
        ids=[]
	displayedObjects=self.ZopeFind(self,obj_metatypes=subColTypes)

	
	for entry in displayedObjects:

			
		object=entry[1]
		if searchMD and hasattr(object,'getMDValue'):
			flag=0
			for field in searchMD.keys():
				if object.getMDValue(field)==searchMD[field]:
					flag=1
				else:
					flag=0
					break
			if flag==1:
				ids.append(object)
		else:
			ids.append(object)

	if not sortfield:
            sortfield=getattr(self,'sortfield','weight')

            
        tmplist=[]

        for x in ids:
		
		if hasattr(x,sortfield):
			try:
				tmp=int(getattr(x,sortfield))
			except:
				tmp=getattr(x,sortfield)
				
		else:
			tmp=10000000
			
		tmplist.append((tmp,x))

	if not sortFieldMD:
		tmplist.sort(sort)
	else:
		tmplist.sort(sortWithMD(sortFieldMD))
	
        return [x for (key,x) in tmplist]

def ECHO_rerenderLinksMD(self,obj=None,types=['title','label']):
        """Rerender all Links"""
	ret=""
	
        if not obj:
            obj = self
            
        entries=obj.ZopeFind(obj,obj_metatypes=['ECHO_resource'],search_sub=1)

        for entry in entries:
		if entry[1].meta_type == 'ECHO_resource':
			try:
				entry[1].ECHO_getResourceMD(template="no")
                                if "title" in types:
                                    entry[1].generate_title()
                                if "label" in types:
                                    entry[1].generate_label()
				ret+="OK:"+entry[0]+"-- "+entry[1].getTitle().decode('utf-8')+"-- "+entry[1].getTitle().decode('utf-8')+"<br>"
			except:
				ret+="Error:"+entry[0]+"<br>"

		
                
                
        return "<html><body>"+ret+"Rerenderd all links to resources in: "+self.title+"</html></body>"

def reloadMetaDataFromStorage(self,RESPONSE=None):
	    """copy metadata from the storage to ECHO"""
	    ret=""
	    resources=self.ZopeFind(self,obj_metatypes=['ECHO_resource'],search_sub=1)

	    for resource in resources:
		    x=str(resource[1].copyIndex_meta2echo_resource())+"<br>"
		    ret+=x

	    if RESPONSE is not None:
		    #RESPONSE.redirect('./manage_main')
		    return "<html><body>"+ret+"</html></body>"

	    return ret
    
def getRDFDescription(self,linkURL,urn=None,nameDef=None,typeName=None):
	    """rdf"""
	    
	    ret=""
	    about="""<RDF:Description RDF:about="%s">"""
	    name="""<ECHONAVIGATION:name>%s</ECHONAVIGATION:name>"""
	    link="""<ECHONAVIGATION:link xlink:href="%s">%s</ECHONAVIGATION:link>"""
	    clickable="""<ECHONAVIGATION:linkClickable>%s</ECHONAVIGATION:linkClickable>"""
	    #link="""<ECHONAVIGATION:link RDF:about="%s"/>"""
	    type="""<ECHONAVIGATION:type>%s</ECHONAVIGATION:type>"""
            #xlink="""<ECHONAVIGATION:xlink xlink:href="%s"/>"""	
	    if not urn:
		    #urn="urn:"+re.sub('/',':',self.absolute_url())
		    urn=self.absolute_url()
	    about2=about%urn
	    if not nameDef:
		    if hasattr(self,'label') and not (self.label==""):
			    name2=name%self.label
		    elif not self.title=="":
			    name2=name%self.title
		    else:
			    name2=name%self.getId()

		    name2=re.sub('&','&amp;',name2)
	    else:
		    name2=name%nameDef

	    linkURL=re.sub('http:','',linkURL)
	    linkURL2=re.sub('&','&amp;',linkURL)
	    link2=link%(("http:"+linkURL2),("http:"+urllib.quote(linkURL)))
	    clickable2=clickable%"true"

	    if not typeName:
		    type2=type%self.meta_type
	    else:
		    type2=type%typeName
	    
	    #ret=about2+"\n"+name2+"\n"+link2+"\n"+type2+"\n"+clickable2+"\n</RDF:Description>"
	    ret=about2+"\n"+name2+"\n"+type2+"\n"+clickable2+"\n</RDF:Description>"
	    return ret
    
def getCopyrightsFromForm(self,argv): 
	medias={}
	partners={}
	copyrights={}
	
	copyrightsFinal=[]
	for arg in argv.keys():
		
		if arg[0:5]=='media':
			nm=int(arg[5:])
			medias[nm]=argv[arg]
		elif arg[0:5]=='partn':
			nm=int(arg[5:])
			partners[nm]=argv[arg]
		elif arg[0:5]=='copyr':
			nm=int(arg[5:])
			copyrights[nm]=argv[arg]



	copyrightsList=[(medias[nm],partners[nm],copyrights[nm]) for nm in medias.keys()]
	for copyright in copyrightsList:
		
		if copyright[2]=='institution0000':
			copyrightsFinal.append((copyright[0],copyright[1],self.getPartnerCopyright(copyright[1],'')))
		else:
			if not copyright[0]=='':
				copyrightsFinal.append(copyright)
		
			
	return copyrightsFinal

#List of different types for the graphical linking viewer
viewClassificationListMaster=['view point','area']


def checkDiffs(self,metadict):
	    """check differences"""

	    

    
	    def NoneToEmpty(obj):
		    if obj:
			    return obj
		    else:
			    return ""

	    
	    
	    diffs={}
	    
	    tags=self.findTagsFromMapping(self.contentType)
	    self.referencetypes=tags[2]
	    self.fields=tags[3]
	    
    
	    for field in tags[1]:
		    try:
			    if (NoneToEmpty(self.getFieldValue(self.getFieldTag(tags,field)))==metadict[self.getFieldTag(tags,field)]):
				    diffs[self.getFieldTag(tags,field)]=1
			    else:
				    
				    diffs[self.getFieldTag(tags,field)]=0
		    except:
			    diffs[self.getFieldTag(tags,field)]=0
			    
	    return diffs
    

def zptFile(self, path, orphaned=False):
    """returns a page template file from the product"""
    if orphaned:
	# unusual case
	pt=PageTemplateFile(os.path.join(package_home(globals()), path))
    else:
	pt=PageTemplateFile(os.path.join(package_home(globals()), path)).__of__(self)
    return pt


def findObjectPath(startobject, filename):
    """returns the object with the name filename starting at startobject"""
    if startobject is None:
	return None
    paths = filename.split('/')
    object = startobject
    for path in paths:
        if hasattr(object, path):
	    object = getattr(object, path)
	else:
	    object = None
	    break
    return object


def zptObjectOrFile(self, filename, localdir='zpt', orphaned=False):
    """returns a page template instance or a file from the product"""
    # look for an object called path
    pt = findObjectPath(self, filename)
    # the object should also not be a python function
    if (pt is None) or isinstance(pt, types.FunctionType):
	# get a ZPT file
	pt = zptFile(self, localdir+'/'+filename, orphaned=orphaned)
    return pt


def sendFile(self, filename, type):
    """sends an object or a local file (in the product) as response"""
    # look for an object called filename
    object = findObjectPath(self, filename)
    if object:
	# if the object exists then send it
	return object.index_html(self.REQUEST.REQUEST, self.REQUEST.RESPONSE)
    else:
	# send a local file with the given content-type
	fn = os.path.join(package_home(globals()), filename)
	self.REQUEST.RESPONSE.setHeader("Content-Type", type)
	self.REQUEST.RESPONSE.write(file(fn).read())
    return


class BrowserCheck:
    """check the browsers request to find out the browser type"""
    
    def __init__(self, zope):
        """initialisiere"""
	self.ua = zope.REQUEST.get_header("HTTP_USER_AGENT")
	self.isN4 = False
	self.isIE = False
	if string.find(self.ua, 'MSIE') > -1:
	    self.isIE = True
	else:
	    self.isN4 = string.find(self.ua, 'Mozilla/4.') > -1
	try:
	    self.nav = self.ua[string.find(self.ua, '('):]
	    ie = string.split(self.nav, "; ")[1]
	    if string.find(ie, "MSIE") > -1:
		self.versIE = string.split(ie, " ")[1]
	except: pass
	self.isMac = string.find(self.ua, 'Macintosh') > -1
	self.isWin = string.find(self.ua, 'Windows') > -1
	self.isIEWin = self.isIE and self.isWin
	self.isIEMac = self.isIE and self.isMac

		
def writeMetadata(url,metadict,project=None,startpage=None,xslt=None,thumbtemplate=None,topbar=None,digiLibTemplate=None,xmlfrag=None,digiliburlprefix=None):
	"""Einlesen der Metadaten und und erstellen des geaenderten XML file"""

	def updateTextToolNode(tag,value):

		metanode=dom.getElementsByTagName('texttool')[0]
		try:
			nodeOld=metanode.getElementsByTagName(tag)
		except:
			nodeOld=None
			
		if nodeOld:
			metanode.removeChild(nodeOld[0]).unlink()

		node=dom.createElement(tag)
		nodetext=dom.createTextNode(value)
		node.appendChild(nodetext)
		metanode.appendChild(node)

	if xmlfrag:
		geturl="""<?xml version="1.0" ?>
                           <resource type="MPIWG">
			   <meta>
			    <bib type="Book">
	                    </bib>
			    </meta>
			    </resource>"""
		dom=xml.dom.minidom.parseString(geturl)
	else:
		try:
			geturl=""
			for line in urlopen(url).readlines():
				geturl=geturl+line


		except:
			return (None,"XCannot open: "+url)

		try:
			dom=xml.dom.minidom.parseString(geturl)
		except:
			return (None,"Cannot parse: "+url+"<br>"+geturl)

	

	metanodes=dom.getElementsByTagName('bib')

	if not metanodes:
		metanodes=dom.getElementsByTagName('archimedes')

	metanode=metanodes[0]

	for metaData in metadict.keys():
		
		try:
			nodeOld=metanode.getElementsByTagName(metaData)
		except:
			nodeOld=None
			
		if nodeOld:
			metanode.removeChild(nodeOld[0]).unlink()
		else:
			# try also old writing rule - instead of _:
			try:
				nodeOld=metanode.getElementsByTagName(re.sub('_','-',metaData))
			except:
				nodeOld=None
				
			if nodeOld:
				metanode.removeChild(nodeOld[0]).unlink()

		metanodeneu=dom.createElement(metaData)
                metanodetext=dom.createTextNode(metadict[metaData])
		#try:
			#metanodetext=dom.createTextNode(unicode(metadict[metaData],"utf-8"))
		#except:
			#metanodetext=dom.createTextNode(metadict[metaData].encode('utf-8'))
		metanodeneu.appendChild(metanodetext)
		metanode.appendChild(metanodeneu)


	
	
	
	if project:
		updateTextToolNode('project',project)

	if startpage:
		updateTextToolNode('startpage',startpage)

	if topbar:
		updateTextToolNode('toptemplate',topbar)

	if thumbtemplate:
		updateTextToolNode('thumbtemplate',thumbtemplate)

	if xslt:
		updateTextToolNode('xslt',xslt)

	
	if digiliburlprefix:
		updateTextToolNode('digiliburlprefix',digiliburlprefix)
	
        try:	
	 return dom.toxml().encode('utf-8')
	except:
	 return dom.toxml('utf-8')

	
	
def readMetadata(url):
    """Methode zum Auslesen der Metadateninformation zu einer Resource
    Vorerst noch Typ bib"""
    
    metadict={}
    
    try:
        geturl=""
        for line in urlopen(url).readlines():
            geturl=geturl+line
        
        
    except:
        return (None,"Cannot open: "+url)

    try:
        dom=xml.dom.minidom.parseString(geturl)
    except:
	    return (None,"Cannot parse: "+url+"<br>"+geturl)

    metanode=dom.getElementsByTagName('bib')
    metadict['bib_type']='Book'
    if len(metanode)==0:
        metanode=dom.getElementsByTagName('archimedes')
        metadict['bib_type']='Archimedes'
        
        
    if not len(metanode)==0:    
        metacontent=metanode[0].childNodes
    
        try:
            metadict['bib_type']=getText(dom.getElementsByTagName('bib')[0].attributes['type'].childNodes)
        except:
            """nothing"""
        
        for node in metacontent:
		try:
			#print urllib.unquote(getText(node.childNodes)),getText(node.childNodes)
			#metadict[re.sub('-','_',node.tagName.lower())]=urllib.unquote(getText(node.childNodes))
			metadict[re.sub('-','_',node.tagName.lower())]=getText(node.childNodes)
		
		except:
			"""nothing"""


    return metadict,""
    

class MapArea(SimpleItem):
    """simple class to hold coordinates"""

    meta_type = 'MapArea'
    # Create a SecurityInfo for this class.
    security = ClassSecurityInfo()
    security.setDefaultAccess("allow")
    # type constants
    TYPE_AREA = 'area'
    TYPE_ARROW = 'arrow'
	
    def __init__(self, id, coords, label=None, type=None, text=None):
	"""init"""
	self.coords = coords[0:4]
	if len(coords) > 4:
	    self.angle = coords[4]
	else:
	    self.angle = 0
	self.id = id
	self.label = label
	self.setType(type)
	self.text = text

    def setCoords(self, coords):
	"""sets the coords"""
	self.coords = coords

    def getCoordString(self):
	"""returns coordinates as a string"""
	return string.join(self.coords, ',')

    def setCoordString(self, coordstring):
	"""sets coordinates from a string"""
	coords = string.split(coordstring, ',')
	self.coords = [c.strip() for c in coords]

    def getFullId(self, prefix=None):
	"""returns the id with prefixed parent id"""
	if prefix is None:
	    if hasattr(self, 'aq_parent'):
		prefix = self.aq_parent.id
	    else:
		prefix = "id"
	fid = prefix + "." + self.id
	return fid

    def getType(self):
	"""returns the type"""
	return self.type

    def setType(self, type):
	"""sets the type"""
	if type == MapArea.TYPE_ARROW:
	    self.type = MapArea.TYPE_ARROW
	elif type == MapArea.TYPE_AREA:
	    self.type = MapArea.TYPE_AREA
	else:
	    self.type = MapArea.TYPE_AREA
	    
    def isTypeArea(self):
	"""returns if the type is area"""
	return self.type == MapArea.TYPE_AREA

    def isTypeArrow(self):
	"""returns if the type is arrow"""
	return self.type == MapArea.TYPE_ARROW

    def getAngle(self):
	"""returns the angle"""
	return self.angle

    def setAngle(self, angle):
	"""sets the angle"""
	self.angle = angle

    def getText(self):
	"""returns the popup text"""
	if self.text is None:
	    if hasattr(self, 'aq_parent'):
		parent = self.aq_parent
		if parent.contentType == 'text-popup':
		    return parent.description
	return self.text

    def setText(self, text):
	"""sets the text"""
	self.text = text

    def getLabel(self):
	"""returns the link label"""
	if self.label is None:
	    if hasattr(self, 'aq_parent'):
		return self.aq_parent.label or self.aq_parent.id
	return self.label

    def setLabel(self, label):
	"""sets the label"""
	self.label = label

    def getLinkId(self):
	if hasattr(self, 'aq_parent'):
	    return self.aq_parent.id
	return self.id


# call this to initialize framework classes, which
# does the right thing with the security assertions.
Globals.InitializeClass(MapArea)