from OFS.Folder import Folder
from Products.PageTemplates.ZopePageTemplate import ZopePageTemplate
from Products.PageTemplates.PageTemplateFile import PageTemplateFile 
from AccessControl import ClassSecurityInfo
from AccessControl import getSecurityManager
from Globals import package_home

#from Ft.Xml import EMPTY_NAMESPACE, Parse 
#import Ft.Xml.Domlette

import xml.etree.ElementTree as ET

import os.path
import sys
import urllib
import logging
import math
import urlparse 
import re
import string

from SrvTxtUtils import getInt, getText, getHttpData

def logger(txt,method,txt2):
    """logging"""
    logging.info(txt+ txt2)
    
    
def serializeNode(node, encoding="utf-8"):
    """returns a string containing node as XML"""
    s = ET.tostring(node)
    
    # 4Suite:
    #    stream = cStringIO.StringIO()
    #    Ft.Xml.Domlette.Print(node, stream=stream, encoding=encoding)
    #    s = stream.getvalue()
    #    stream.close()
    return s

def browserCheck(self):
    """check the browsers request to find out the browser type"""
    bt = {}
    ua = self.REQUEST.get_header("HTTP_USER_AGENT")
    bt['ua'] = ua
    bt['isIE'] = False
    bt['isN4'] = False
    bt['versFirefox']=""
    bt['versIE']=""
    bt['versSafariChrome']=""
    bt['versOpera']=""
    
    if string.find(ua, 'MSIE') > -1:
        bt['isIE'] = True
    else:
        bt['isN4'] = (string.find(ua, 'Mozilla/4.') > -1)
    # Safari oder Chrome identification    
    try:
        nav = ua[string.find(ua, '('):]
        nav1=ua[string.find(ua,')'):]
        nav2=nav1[string.find(nav1,'('):]
        nav3=nav2[string.find(nav2,')'):]
        ie = string.split(nav, "; ")[1]
        ie1 =string.split(nav1, " ")[2]
        ie2 =string.split(nav3, " ")[1]
        ie3 =string.split(nav3, " ")[2]
        if string.find(ie3, "Safari") >-1:
            bt['versSafariChrome']=string.split(ie2, "/")[1]
    except: pass
    # IE identification
    try:
        nav = ua[string.find(ua, '('):]
        ie = string.split(nav, "; ")[1]
        if string.find(ie, "MSIE") > -1:
            bt['versIE'] = string.split(ie, " ")[1]
    except:pass
    # Firefox identification
    try:
        nav = ua[string.find(ua, '('):]
        nav1=ua[string.find(ua,')'):]
        if string.find(ie1, "Firefox") >-1:
            nav5= string.split(ie1, "/")[1]
            logging.debug("FIREFOX: %s"%(nav5))
            bt['versFirefox']=nav5[0:3]                   
    except:pass
    #Opera identification
    try:
        if string.find(ua,"Opera") >-1:
            nav = ua[string.find(ua, '('):]
            nav1=nav[string.find(nav,')'):]
            bt['versOpera']=string.split(nav1,"/")[2]
    except:pass
    
    bt['isMac'] = string.find(ua, 'Macintosh') > -1
    bt['isWin'] = string.find(ua, 'Windows') > -1
    bt['isIEWin'] = bt['isIE'] and bt['isWin']
    bt['isIEMac'] = bt['isIE'] and bt['isMac']
    bt['staticHTML'] = False

    return bt

def getParentPath(path, cnt=1):
    """returns pathname shortened by cnt"""
    # make sure path doesn't end with /
    path = path.rstrip('/')
    # split by /, shorten, and reassemble
    return '/'.join(path.split('/')[0:-cnt])


##
## documentViewer class
##
class documentViewer(Folder):
    """document viewer"""
    meta_type="Document viewer"
    
    security=ClassSecurityInfo()
    manage_options=Folder.manage_options+(
        {'label':'main config','action':'changeDocumentViewerForm'},
        )
    
    metadataService = None
    """MetaDataFolder instance"""

    # templates and forms
    viewer_main = PageTemplateFile('zpt/viewer_main', globals())
    toc_thumbs = PageTemplateFile('zpt/toc_thumbs', globals())
    toc_text = PageTemplateFile('zpt/toc_text', globals())
    toc_figures = PageTemplateFile('zpt/toc_figures', globals())
    page_main_images = PageTemplateFile('zpt/page_main_images', globals())
    page_main_double = PageTemplateFile('zpt/page_main_double', globals())
    page_main_text = PageTemplateFile('zpt/page_main_text', globals())
    page_main_text_dict = PageTemplateFile('zpt/page_main_text_dict', globals())
    page_main_gis =PageTemplateFile ('zpt/page_main_gis', globals())
    page_main_xml = PageTemplateFile('zpt/page_main_xml', globals())
    page_main_pureXml = PageTemplateFile('zpt/page_main_pureXml', globals())
    head_main = PageTemplateFile('zpt/head_main', globals())
    docuviewer_css = PageTemplateFile('css/docuviewer.css', globals())
    info_xml = PageTemplateFile('zpt/info_xml', globals())
    
    
    thumbs_main_rss = PageTemplateFile('zpt/thumbs_main_rss', globals())

    
    def __init__(self,id,imageScalerUrl=None,textServerName=None,title="",digilibBaseUrl=None,thumbcols=2,thumbrows=5,authgroups="mpiwg"):
        """init document viewer"""
        self.id=id
        self.title=title
        self.thumbcols = thumbcols
        self.thumbrows = thumbrows
        # authgroups is list of authorized groups (delimited by ,)
        self.authgroups = [s.strip().lower() for s in authgroups.split(',')]
        # create template folder so we can always use template.something
        
        templateFolder = Folder('template')
        #self['template'] = templateFolder # Zope-2.12 style
        self._setObject('template',templateFolder) # old style
        try:
            import MpdlXmlTextServer
            textServer = MpdlXmlTextServer.MpdlXmlTextServer(id='fulltextclient',serverName=textServerName)
            #templateFolder['fulltextclient'] = xmlRpcClient
            templateFolder._setObject('fulltextclient',textServer)
        except Exception, e:
            logging.error("Unable to create MpdlXmlTextServer for fulltextclient: "+str(e))
            
        try:
            from Products.zogiLib.zogiLib import zogiLib
            zogilib = zogiLib(id="zogilib", title="zogilib for docuviewer", dlServerURL=imageScalerUrl, layout="book")
            #templateFolder['zogilib'] = zogilib
            templateFolder._setObject('zogilib',zogilib)
        except Exception, e:
            logging.error("Unable to create zogiLib for zogilib: "+str(e))
            
        try:
            # assume MetaDataFolder instance is called metadata 
            self.metadataService = getattr(self, 'metadata')
        except Exception, e:
            logging.error("Unable to find MetaDataFolder 'metadata': "+str(e))
            
        
    # proxy text server methods to fulltextclient
    def getTextPage(self, **args):
        """get page"""
        return self.template.fulltextclient.getTextPage(**args)

    def getOrigPages(self, **args):
        """get page"""
        return self.template.fulltextclient.getOrigPages(**args)
    
    def getOrigPagesNorm(self, **args):
        """get page"""
        return self.template.fulltextclient.getOrigPagesNorm(**args)

    def getQuery(self, **args):
        """get query in search"""
        return self.template.fulltextclient.getQuery(**args)
     
    def getSearch(self, **args):
        """get search"""
        return self.template.fulltextclient.getSearch(**args)
    
    def getGisPlaces(self, **args):
        """get gis places"""
        return self.template.fulltextclient.getGisPlaces(**args)
 
    def getAllGisPlaces(self, **args):
        """get all gis places """
        return self.template.fulltextclient.getAllGisPlaces(**args)
       
    def getTranslate(self, **args):
        """get translate"""
        return self.template.fulltextclient.getTranslate(**args)

    def getLemma(self, **args):
        """get lemma"""
        return self.template.fulltextclient.getLemma(**args)

    def getLemmaQuery(self, **args):
        """get query"""
        return self.template.fulltextclient.getLemmaQuery(**args)

    def getLex(self, **args):
        """get lex"""
        return self.template.fulltextclient.getLex(**args)

    def getToc(self, **args):
        """get toc"""
        return self.template.fulltextclient.getToc(**args)

    def getTocPage(self, **args):
        """get tocpage"""
        return self.template.fulltextclient.getTocPage(**args)

    
    security.declareProtected('View','thumbs_rss')
    def thumbs_rss(self,mode,url,viewMode="auto",start=None,pn=1):
        '''
        view it
        @param mode: defines how to access the document behind url 
        @param url: url which contains display information
        @param viewMode: if images display images, if text display text, default is images (text,images or auto)
        
        '''
        logging.debug("HHHHHHHHHHHHHH:load the rss")
        logging.debug("documentViewer (index) mode: %s url:%s start:%s pn:%s"%(mode,url,start,pn))
        
        if not hasattr(self, 'template'):
            # create template folder if it doesn't exist
            self.manage_addFolder('template')
            
        if not self.digilibBaseUrl:
            self.digilibBaseUrl = self.findDigilibUrl() or "http://nausikaa.mpiwg-berlin.mpg.de/digitallibrary"
            
        docinfo = self.getDocinfo(mode=mode,url=url)
        #pageinfo = self.getPageinfo(start=start,current=pn,docinfo=docinfo)
        pageinfo = self.getPageinfo(start=start,current=pn, docinfo=docinfo)
        ''' ZDES '''
        pt = getattr(self.template, 'thumbs_main_rss')
        
        if viewMode=="auto": # automodus gewaehlt
            if docinfo.has_key("textURL") or docinfo.get('textURLPath',None): #texturl gesetzt und textViewer konfiguriert
                viewMode="text"
            else:
                viewMode="images"
               
        return pt(docinfo=docinfo,pageinfo=pageinfo,viewMode=viewMode)

  
    security.declareProtected('View','index_html')
    def index_html(self,url,mode="texttool",viewMode="auto",tocMode="thumbs",start=None,pn=1,mk=None):
        """
        view it
        @param mode: defines how to access the document behind url 
        @param url: url which contains display information
        @param viewMode: if images display images, if text display text, default is auto (text,images or auto)
        @param tocMode: type of 'table of contents' for navigation (thumbs, text, figures, none)
        """
        
        logging.debug("documentViewer (index) mode: %s url:%s start:%s pn:%s"%(mode,url,start,pn))
        
        if not hasattr(self, 'template'):
            # this won't work
            logging.error("template folder missing!")
            return "ERROR: template folder missing!"
            
        if not getattr(self, 'digilibBaseUrl', None):
            self.digilibBaseUrl = self.findDigilibUrl() or "http://digilib.mpiwg-berlin.mpg.de/digitallibrary"
            
        docinfo = self.getDocinfo(mode=mode,url=url)
        
        if tocMode != "thumbs":
            # get table of contents
            docinfo = self.getToc(mode=tocMode, docinfo=docinfo)

        # auto viewMode: text_dict if text else images
        if viewMode=="auto": 
            if docinfo.get('textURL', None) or docinfo.get('textURLPath', None): 
                viewMode="text_dict"
            else:
                viewMode="images"
                
        pageinfo = self.getPageinfo(start=start, current=pn, docinfo=docinfo, viewMode=viewMode, tocMode=tocMode)
        
        if viewMode != 'images' and docinfo.get('textURLPath', None):
            # get full text page
            page = self.getTextPage(mode=viewMode, pn=pn, docinfo=docinfo, pageinfo=pageinfo)
            pageinfo['textPage'] = page
            
        # get template /template/viewer_main
        pt = getattr(self.template, 'viewer_main')
        # and execute with parameters
        return pt(docinfo=docinfo, pageinfo=pageinfo, viewMode=viewMode, mk=self.generateMarks(mk))
  
    def generateMarks(self,mk):
        ret=""
        if mk is None:
            return ""
        if not isinstance(mk, list):
            mk=[mk]
        for m in mk:
            ret+="mk=%s"%m
        return ret
    
    
    def getBrowser(self):
        """getBrowser the version of browser """
        bt = browserCheck(self)
        logging.debug("BROWSER VERSION: %s"%(bt))
        return bt
        
    def findDigilibUrl(self):
        """try to get the digilib URL from zogilib"""
        url = self.template.zogilib.getDLBaseUrl()
        return url

    def getDocumentViewerURL(self):
        """returns the URL of this instance"""
        return self.absolute_url()
    
    def getStyle(self, idx, selected, style=""):
        """returns a string with the given style and append 'sel' if path == selected."""
        #logger("documentViewer (getstyle)", logging.INFO, "idx: %s selected: %s style: %s"%(idx,selected,style))
        if idx == selected:
            return style + 'sel'
        else:
            return style
    
    def getLink(self, param=None, val=None, params=None, baseUrl=None, paramSep='&'):
        """returns URL to documentviewer with parameter param set to val or from dict params"""
        # copy existing request params
        urlParams=self.REQUEST.form.copy()
        # change single param
        if param is not None:
            if val is None:
                if urlParams.has_key(param):
                    del urlParams[param]
            else:
                urlParams[param] = str(val)
                
        # change more params
        if params is not None:
            for k in params.keys():
                v = params[k]
                if v is None:
                    # val=None removes param
                    if urlParams.has_key(k):
                        del urlParams[k]
                        
                else:
                    urlParams[k] = v

        # FIXME: does this belong here?
        if urlParams.get("mode", None) == "filepath": #wenn beim erst Aufruf filepath gesetzt wurde aendere das nun zu imagepath
                urlParams["mode"] = "imagepath"
                urlParams["url"] = getParentPath(urlParams["url"])
                
        # quote values and assemble into query string (not escaping '/')
        ps = paramSep.join(["%s=%s"%(k,urllib.quote_plus(v,'/')) for (k, v) in urlParams.items()])
        #ps = urllib.urlencode(urlParams)
        if baseUrl is None:
            baseUrl = self.REQUEST['URL1']
            
        url = "%s?%s"%(baseUrl, ps)
        return url


    def getLinkAmp(self, param=None, val=None, params=None, baseUrl=None):
        """link to documentviewer with parameter param set to val"""
        return self.getLink(param, val, params, baseUrl, '&')
    
    def getInfo_xml(self,url,mode):
        """returns info about the document as XML"""
        if not self.digilibBaseUrl:
            self.digilibBaseUrl = self.findDigilibUrl() or "http://nausikaa.mpiwg-berlin.mpg.de/digitallibrary"
        
        docinfo = self.getDocinfo(mode=mode,url=url)
        pt = getattr(self.template, 'info_xml')
        return pt(docinfo=docinfo)

    def isAccessible(self, docinfo):
        """returns if access to the resource is granted"""
        access = docinfo.get('accessType', None)
        logging.debug("documentViewer (accessOK) access type %s"%access)
        if access == 'free':
            logging.debug("documentViewer (accessOK) access is free")
            return True
        
        elif access is None or access in self.authgroups:
            # only local access -- only logged in users
            user = getSecurityManager().getUser()
            logging.debug("documentViewer (accessOK) user=%s ip=%s"%(user,self.REQUEST.getClientAddr()))
            if user is not None:
                #print "user: ", user
                return (user.getUserName() != "Anonymous User")
            else:
                return False
        
        logging.error("documentViewer (accessOK) unknown access type %s"%access)
        return False
    


    def getDocinfo(self, mode, url):
        """returns docinfo depending on mode"""
        logging.debug("getDocinfo: mode=%s, url=%s"%(mode,url))
        # look for cached docinfo in session
        if self.REQUEST.SESSION.has_key('docinfo'):
            docinfo = self.REQUEST.SESSION['docinfo']
            # check if its still current
            if docinfo is not None and docinfo.get('mode', None) == mode and docinfo.get('url', None) == url:
                logging.debug("getDocinfo: docinfo in session. keys=%s"%docinfo.keys())
                return docinfo
            
        # new docinfo
        docinfo = {'mode': mode, 'url': url}
        # add self url
        docinfo['viewerUrl'] = self.getDocumentViewerURL()
        # get index.meta DOM
        docUrl = None
        metaDom = None
        if mode=="texttool": 
            # url points to document dir or index.meta
            metaDom = self.metadataService.getDomFromPathOrUrl(url)
            docUrl = url.replace('/index.meta', '')
            if metaDom is None:
                raise IOError("Unable to find index.meta for mode=texttool!")

        elif mode=="imagepath":
            # url points to folder with images, index.meta optional
            # asssume index.meta in parent dir
            docUrl = getParentPath(url)
            metaDom = self.metadataService.getDomFromPathOrUrl(docUrl)

        elif mode=="filepath":
            # url points to image file, index.meta optional
            # asssume index.meta is two path segments up
            docUrl = getParentPath(url, 2)
            metaDom = self.metadataService.getDomFromPathOrUrl(docUrl)

        else:
            logging.error("documentViewer (getdocinfo) unknown mode: %s!"%mode)
            raise ValueError("Unknown mode %s! Has to be one of 'texttool','imagepath','filepath'."%(mode))
        
        docinfo['documentUrl'] = docUrl
        # process index.meta contents
        if metaDom is not None:
            # document directory name and path
            logging.debug("RESOURCE: %s"%repr(self.metadataService.resource.getData(dom=metaDom,recursive=1)))
            resource = self.metadataService.getResourceData(dom=metaDom)
            if resource:
                docinfo = self.getDocinfoFromResource(docinfo, resource)

            # texttool info
            texttool = self.metadataService.getTexttoolData(dom=metaDom)
            if texttool:
                docinfo = self.getDocinfoFromTexttool(docinfo, texttool)
            
            # bib info
            bib = self.metadataService.getBibData(dom=metaDom)
            if bib:
                docinfo = self.getDocinfoFromBib(docinfo, bib)
            else:
                # no bib - try info.xml
                docinfo = self.getDocinfoFromPresentationInfoXml(docinfo)
                
            # auth info
            access = self.metadataService.getAccessData(dom=metaDom)
            if access:
                docinfo = self.getDocinfoFromAccess(docinfo, access)

            # attribution info
            attribution = self.metadataService.getAttributionData(dom=metaDom)
            if attribution:
                logging.debug("getDocinfo: attribution=%s"%repr(attribution))
                docinfo['attribution'] = attribution
                #docinfo = self.getDocinfoFromAccess(docinfo, access)

            # copyright info
            copyright = self.metadataService.getCopyrightData(dom=metaDom)
            if copyright:
                logging.debug("getDocinfo: copyright=%s"%repr(copyright))
                docinfo['copyright'] = copyright
                #docinfo = self.getDocinfoFromAccess(docinfo, access)

        # image path
        if mode != 'texttool':
            # override image path from texttool
            docinfo['imagePath'] = url.replace('/mpiwg/online/', '', 1)

        # number of images from digilib
        if docinfo.get('imagePath', None):
            docinfo['imageURL'] = self.digilibBaseUrl + "/servlet/Scaler?fn=" + docinfo['imagePath']
            docinfo = self.getDocinfoFromDigilib(docinfo, docinfo['imagePath'])

        logging.debug("documentViewer (getdocinfo) docinfo: keys=%s"%docinfo.keys())
        #logging.debug("documentViewer (getdocinfo) docinfo: %s"%docinfo)
        # store in session
        self.REQUEST.SESSION['docinfo'] = docinfo
        return docinfo

    def getDocinfoFromResource(self, docinfo, resource):
        """reads contents of resource element into docinfo"""
        docName = resource.get('name', None)
        docinfo['documentName'] = docName
        docPath = resource.get('archive-path', None)
        if docPath:
            # clean up document path
            if docPath[0] != '/':
                docPath = '/' + docPath
                
            if docName and (not docPath.endswith(docName)):
                docPath += "/" + docName
            
        else:
            # use docUrl as docPath
            docUrl = docinfo['documentURL']
            if not docUrl.startswith('http:'):
                docPath = docUrl
        if docPath:
            # fix URLs starting with /mpiwg/online
            docPath = docPath.replace('/mpiwg/online', '', 1)

        docinfo['documentPath'] = docPath
        return docinfo

    def getDocinfoFromTexttool(self, docinfo, texttool):
        """reads contents of texttool element into docinfo"""
        # image dir
        imageDir = texttool.get('image', None)
        docPath = docinfo.get('documentPath', None)
        if imageDir and docPath:
            #print "image: ", imageDir, " archivepath: ", archivePath
            imageDir = os.path.join(docPath, imageDir)
            imageDir = imageDir.replace('/mpiwg/online', '', 1)
            docinfo['imagePath'] = imageDir
        
        # old style text URL
        textUrl = texttool.get('text', None)
        if textUrl and docPath:
            if urlparse.urlparse(textUrl)[0] == "": #keine url
                textUrl = os.path.join(docPath, textUrl) 
            
            docinfo['textURL'] = textUrl
    
        # new style text-url-path
        textUrl = texttool.get('text-url-path', None)
        if textUrl:
            docinfo['textURLPath'] = textUrl
            #TODO: ugly:
            #textUrlkurz = string.split(textUrl, ".")[0]
            #docinfo['textURLPathkurz'] = textUrlkurz
            
        # old presentation stuff
        presentation = texttool.get('presentation', None)
        if presentation and docPath:
            if presentation.startswith('http:'):
                docinfo['presentationUrl'] = presentation
            else:
                docinfo['presentationUrl'] = os.path.join(docPath, presentation)
            
        return docinfo

    def getDocinfoFromBib(self, docinfo, bib):
        """reads contents of bib element into docinfo"""
        logging.debug("getDocinfoFromBib bib=%s"%repr(bib))
        # put all raw bib fields in dict "bib"
        docinfo['bib'] = bib
        bibtype = bib.get('@type', None)
        docinfo['bibType'] = bibtype
        # also store DC metadata for convenience
        dc = self.metadataService.getDCMappedData(bib)
        docinfo['creator'] = dc.get('creator',None)
        docinfo['title'] = dc.get('title',None)
        docinfo['date'] = dc.get('date',None)
        return docinfo
            
    def getDocinfoFromAccess(self, docinfo, acc):
        """reads contents of access element into docinfo"""
        #TODO: also read resource type
        logging.debug("getDocinfoFromAccess acc=%s"%repr(acc))
        try:
            acctype = acc['@attr']['type']
            if acctype:
                access=acctype
                if access in ['group', 'institution']:
                    access = acc['name'].lower()
                
                docinfo['accessType'] = access

        except:
            pass
        
        return docinfo

    def getDocinfoFromDigilib(self, docinfo, path):
        infoUrl=self.digilibBaseUrl+"/dirInfo-xml.jsp?mo=dir&fn="+path
        # fetch data
        txt = getHttpData(infoUrl)
        if not txt:
            logging.error("Unable to get dir-info from %s"%(infoUrl))
            return docinfo

        dom = ET.fromstring(txt)
        size = getText(dom.find("size"))
        logging.debug("getDocinfoFromDigilib: size=%s"%size)
        if size:
            docinfo['numPages'] = int(size)
        else:
            docinfo['numPages'] = 0
            
        # TODO: produce and keep list of image names and numbers
        return docinfo
            
            
    def getDocinfoFromPresentationInfoXml(self,docinfo):
        """gets DC-like bibliographical information from the presentation entry in texttools"""
        url = docinfo.get('presentationUrl', None)
        if not url:
            logging.error("getDocinfoFromPresentation: no URL!")
            return docinfo
        
        dom = None
        metaUrl = None
        if url.startswith("http://"):
            # real URL
            metaUrl = url
        else:
            # online path
            
            server=self.digilibBaseUrl+"/servlet/Texter?fn="
            metaUrl=server+url
        
        txt=getHttpData(metaUrl)
        if txt is None:
            logging.error("Unable to read info.xml from %s"%(url))
            return docinfo
            
        dom = ET.fromstring(txt)
        docinfo['creator']=getText(dom.find(".//author"))
        docinfo['title']=getText(dom.find(".//title"))
        docinfo['date']=getText(dom.find(".//date"))
        return docinfo
    

    def getPageinfo(self, current, start=None, rows=None, cols=None, docinfo=None, viewMode=None, tocMode=None):
        """returns pageinfo with the given parameters"""
        pageinfo = {}
        current = getInt(current)
    
        pageinfo['current'] = current
        rows = int(rows or self.thumbrows)
        pageinfo['rows'] = rows
        cols = int(cols or self.thumbcols)
        pageinfo['cols'] = cols
        grpsize = cols * rows
        pageinfo['groupsize'] = grpsize
        # what does this do?
        start = getInt(start, default=(math.ceil(float(current)/float(grpsize))*grpsize-(grpsize-1)))
        # int(current / grpsize) * grpsize +1))
        pageinfo['start'] = start
        pageinfo['end'] = start + grpsize
        if (docinfo is not None) and ('numPages' in docinfo):
            np = int(docinfo['numPages'])
            pageinfo['end'] = min(pageinfo['end'], np)
            pageinfo['numgroups'] = int(np / grpsize)
            if np % grpsize > 0:
                pageinfo['numgroups'] += 1
                
        pageinfo['viewMode'] = viewMode
        pageinfo['tocMode'] = tocMode
        pageinfo['characterNormalization'] = self.REQUEST.get('characterNormalization','reg')
        #pageinfo['optionToggle'] = self.REQUEST.get('optionToggle','1')
        pageinfo['query'] = self.REQUEST.get('query','') 
        pageinfo['queryType'] = self.REQUEST.get('queryType','')
        pageinfo['querySearch'] =self.REQUEST.get('querySearch', 'fulltext')
        pageinfo['textPN'] = self.REQUEST.get('textPN','1')
        pageinfo['highlightQuery'] = self.REQUEST.get('highlightQuery','')
        pageinfo['tocPageSize'] = self.REQUEST.get('tocPageSize', '30')
        pageinfo['queryPageSize'] =self.REQUEST.get('queryPageSize', '10')
        pageinfo['tocPN'] = self.REQUEST.get('tocPN', '1')
        # WTF?:
        toc = int(pageinfo['tocPN'])
        pageinfo['textPages'] =int(toc)
        
        # What does this do?
        if 'tocSize_%s'%tocMode in docinfo:
            tocSize = int(docinfo['tocSize_%s'%tocMode])
            tocPageSize = int(pageinfo['tocPageSize'])
            # cached toc           
            if tocSize%tocPageSize>0:
                tocPages=tocSize/tocPageSize+1
            else:
                tocPages=tocSize/tocPageSize
                
            pageinfo['tocPN'] = min(tocPages,toc)
            
        pageinfo['searchPN'] =self.REQUEST.get('searchPN','1')
        pageinfo['sn'] =self.REQUEST.get('sn','')
        return pageinfo


    security.declareProtected('View management screens','changeDocumentViewerForm')    
    changeDocumentViewerForm = PageTemplateFile('zpt/changeDocumentViewer', globals())
    
    def changeDocumentViewer(self,title="",digilibBaseUrl=None,thumbrows=2,thumbcols=5,authgroups='mpiwg',RESPONSE=None):
        """init document viewer"""
        self.title=title
        self.digilibBaseUrl = digilibBaseUrl
        self.thumbrows = thumbrows
        self.thumbcols = thumbcols
        self.authgroups = [s.strip().lower() for s in authgroups.split(',')]
        try:
            # assume MetaDataFolder instance is called metadata 
            self.metadataService = getattr(self, 'metadata')
        except Exception, e:
            logging.error("Unable to find MetaDataFolder 'metadata': "+str(e))

        if RESPONSE is not None:
            RESPONSE.redirect('manage_main')
        
def manage_AddDocumentViewerForm(self):
    """add the viewer form"""
    pt=PageTemplateFile('zpt/addDocumentViewer', globals()).__of__(self)
    return pt()
  
def manage_AddDocumentViewer(self,id,imageScalerUrl="",textServerName="",title="",RESPONSE=None):
    """add the viewer"""
    newObj=documentViewer(id,imageScalerUrl=imageScalerUrl,title=title,textServerName=textServerName)
    self._setObject(id,newObj)
    
    if RESPONSE is not None:
        RESPONSE.redirect('manage_main')

## DocumentViewerTemplate class
class DocumentViewerTemplate(ZopePageTemplate):
    """Template for document viewer"""
    meta_type="DocumentViewer Template"


def manage_addDocumentViewerTemplateForm(self):
    """Form for adding"""
    pt=PageTemplateFile('zpt/addDocumentViewerTemplate', globals()).__of__(self)
    return pt()

def manage_addDocumentViewerTemplate(self, id='viewer_main', title=None, text=None,
                           REQUEST=None, submit=None):
    "Add a Page Template with optional file content."

    self._setObject(id, DocumentViewerTemplate(id))
    ob = getattr(self, id)
    txt=file(os.path.join(package_home(globals()),'zpt/viewer_main.zpt'),'r').read()
    logging.info("txt %s:"%txt)
    ob.pt_edit(txt,"text/html")
    if title:
        ob.pt_setTitle(title)
    try:
        u = self.DestinationURL()
    except AttributeError:
        u = REQUEST['URL1']
        
    u = "%s/%s" % (u, urllib.quote(id))
    REQUEST.RESPONSE.redirect(u+'/manage_main')
    return ''