Mercurial > hg > documentViewer
annotate documentViewer.py @ 45:0391fe75aef3
fixed handling of documents with missing access tag
author | casties |
---|---|
date | Wed, 26 Jul 2006 14:23:55 +0200 |
parents | f3bc59cf64d9 |
children | 31059e3d9338 |
rev | line source |
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0 | 1 from OFS.Folder import Folder |
2 from Products.PageTemplates.ZopePageTemplate import ZopePageTemplate | |
3 from Products.PageTemplates.PageTemplateFile import PageTemplateFile | |
4 from AccessControl import ClassSecurityInfo | |
32 | 5 from AccessControl import getSecurityManager |
0 | 6 from Globals import package_home |
7 | |
8 from Ft.Xml.Domlette import NonvalidatingReader | |
9 from Ft.Xml.Domlette import PrettyPrint, Print | |
38 | 10 from Ft.Xml import EMPTY_NAMESPACE, Parse |
0 | 11 |
12 import Ft.Xml.XPath | |
13 | |
14 import os.path | |
31 | 15 import sys |
0 | 16 import cgi |
17 import urllib | |
22 | 18 import zLOG |
0 | 19 |
25 | 20 def getInt(number, default=0): |
21 """returns always an int (0 in case of problems)""" | |
22 try: | |
23 return int(number) | |
24 except: | |
25 return default | |
26 | |
0 | 27 def getTextFromNode(nodename): |
32 | 28 if nodename is None: |
29 return "" | |
0 | 30 nodelist=nodename.childNodes |
31 rc = "" | |
32 for node in nodelist: | |
33 if node.nodeType == node.TEXT_NODE: | |
34 rc = rc + node.data | |
35 return rc | |
36 | |
35 | 37 |
38 def getParentDir(path): | |
39 """returns pathname shortened by one""" | |
40 return '/'.join(path.split('/')[0:-1]) | |
41 | |
42 | |
0 | 43 import socket |
44 | |
32 | 45 def urlopen(url,timeout=2): |
0 | 46 """urlopen mit timeout""" |
32 | 47 socket.setdefaulttimeout(timeout) |
0 | 48 ret=urllib.urlopen(url) |
49 socket.setdefaulttimeout(5) | |
50 return ret | |
51 | |
52 | |
22 | 53 ## |
54 ## documentViewer class | |
55 ## | |
56 class documentViewer(Folder): | |
0 | 57 """document viewer""" |
58 | |
59 meta_type="Document viewer" | |
60 | |
61 security=ClassSecurityInfo() | |
22 | 62 manage_options=Folder.manage_options+( |
0 | 63 {'label':'main config','action':'changeDocumentViewerForm'}, |
64 ) | |
65 | |
22 | 66 # templates and forms |
67 viewer_main = PageTemplateFile('zpt/viewer_main', globals()) | |
68 thumbs_main = PageTemplateFile('zpt/thumbs_main', globals()) | |
69 image_main = PageTemplateFile('zpt/image_main', globals()) | |
70 head_main = PageTemplateFile('zpt/head_main', globals()) | |
71 docuviewer_css = PageTemplateFile('css/docuviewer.css', globals()) | |
72 | |
73 security.declareProtected('View management screens','changeDocumentViewerForm') | |
74 changeDocumentViewerForm = PageTemplateFile('zpt/changeDocumentViewer', globals()) | |
75 | |
0 | 76 |
32 | 77 def __init__(self,id,imageViewerUrl,title="",digilibBaseUrl=None,thumbcols=2,thumbrows=10,authgroups="mpiwg"): |
0 | 78 """init document viewer""" |
79 self.id=id | |
80 self.title=title | |
81 self.imageViewerUrl=imageViewerUrl | |
25 | 82 if not digilibBaseUrl: |
22 | 83 self.digilibBaseUrl = self.findDigilibUrl() |
25 | 84 else: |
85 self.digilibBaseUrl = digilibBaseUrl | |
86 self.thumbcols = thumbcols | |
87 self.thumbrows = thumbrows | |
32 | 88 # authgroups is list of authorized groups (delimited by ,) |
89 self.authgroups = [s.strip().lower() for s in authgroups.split(',')] | |
22 | 90 # add template folder so we can always use template.something |
91 self.manage_addFolder('template') | |
92 | |
93 | |
94 security.declareProtected('View','index_html') | |
25 | 95 def index_html(self,mode,url,start=None,pn=1): |
22 | 96 ''' |
97 view it | |
98 @param mode: defines which type of document is behind url | |
99 @param url: url which contains display information | |
100 ''' | |
0 | 101 |
22 | 102 zLOG.LOG("documentViewer (index)", zLOG.INFO, "mode: %s url:%s start:%s pn:%s"%(mode,url,start,pn)) |
103 | |
104 if not hasattr(self, 'template'): | |
105 # create template folder if it doesn't exist | |
106 self.manage_addFolder('template') | |
107 | |
108 if not self.digilibBaseUrl: | |
109 self.digilibBaseUrl = self.findDigilibUrl() or "http://nausikaa.mpiwg-berlin.mpg.de/digitallibrary" | |
110 | |
25 | 111 docinfo = self.getDocinfo(mode=mode,url=url) |
112 pageinfo = self.getPageinfo(start=start,current=pn,docinfo=docinfo) | |
22 | 113 pt = getattr(self.template, 'viewer_main') |
114 return pt(docinfo=docinfo,pageinfo=pageinfo) | |
0 | 115 |
116 | |
25 | 117 def getLink(self,param=None,val=None): |
118 """link to documentviewer with parameter param set to val""" | |
35 | 119 params=self.REQUEST.form.copy() |
25 | 120 if param is not None: |
31 | 121 if val is None: |
122 if params.has_key(param): | |
123 del params[param] | |
25 | 124 else: |
35 | 125 params[param] = str(val) |
31 | 126 |
35 | 127 # quote values and assemble into query string |
128 ps = "&".join(["%s=%s"%(k,urllib.quote(v)) for (k, v) in params.items()]) | |
129 url=self.REQUEST['URL1']+"?"+ps | |
25 | 130 return url |
131 | |
0 | 132 |
22 | 133 def getStyle(self, idx, selected, style=""): |
25 | 134 """returns a string with the given style and append 'sel' if path == selected.""" |
22 | 135 #zLOG.LOG("documentViewer (getstyle)", zLOG.INFO, "idx: %s selected: %s style: %s"%(idx,selected,style)) |
136 if idx == selected: | |
137 return style + 'sel' | |
138 else: | |
35 | 139 return style |
0 | 140 |
35 | 141 |
142 def isAccessible(self, docinfo): | |
32 | 143 """returns if access to the resource is granted""" |
144 access = docinfo.get('accessType', None) | |
41 | 145 zLOG.LOG("documentViewer (accessOK)", zLOG.INFO, "access type %s"%access) |
45 | 146 if access is not None and access == 'free': |
42
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147 zLOG.LOG("documentViewer (accessOK)", zLOG.INFO, "access is free") |
32 | 148 return True |
45 | 149 elif access is None or access in self.authgroups: |
35 | 150 # only local access -- only logged in users |
151 user = getSecurityManager().getUser() | |
152 if user is not None: | |
153 #print "user: ", user | |
154 return (user.getUserName() != "Anonymous User") | |
155 else: | |
156 return False | |
32 | 157 |
35 | 158 zLOG.LOG("documentViewer (accessOK)", zLOG.INFO, "unknown access type %s"%access) |
32 | 159 return False |
35 | 160 |
32 | 161 |
31 | 162 def getDirinfoFromDigilib(self,path,docinfo=None): |
29 | 163 """gibt param von dlInfo aus""" |
40 | 164 num_retries = 3 |
31 | 165 if docinfo is None: |
166 docinfo = {} | |
167 | |
40 | 168 infoUrl=self.digilibBaseUrl+"/dirInfo-xml.jsp?mo=dir&fn="+path |
29 | 169 |
40 | 170 zLOG.LOG("documentViewer (getparamfromdigilib)", zLOG.INFO, "dirInfo from %s"%(infoUrl)) |
29 | 171 |
40 | 172 for cnt in range(num_retries): |
35 | 173 try: |
40 | 174 # dom = NonvalidatingReader.parseUri(imageUrl) |
175 txt=urllib.urlopen(infoUrl).read() | |
176 dom = Parse(txt) | |
35 | 177 break |
178 except: | |
40 | 179 zLOG.LOG("documentViewer (getdirinfofromdigilib)", zLOG.ERROR, "error reading %s (try %d)"%(infoUrl,cnt)) |
35 | 180 else: |
40 | 181 raise IOError("Unable to get dir-info from %s"%(infoUrl)) |
29 | 182 |
37 | 183 sizes=dom.xpath("//dir/size") |
184 zLOG.LOG("documentViewer (getparamfromdigilib)", zLOG.INFO, "dirInfo:size"%sizes) | |
29 | 185 |
37 | 186 if sizes: |
187 docinfo['numPages'] = int(getTextFromNode(sizes[0])) | |
31 | 188 else: |
189 docinfo['numPages'] = 0 | |
190 | |
191 return docinfo | |
32 | 192 |
29 | 193 |
35 | 194 def getIndexMeta(self, url): |
195 """returns dom of index.meta document at url""" | |
39
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196 num_retries = 3 |
35 | 197 dom = None |
39
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198 metaUrl = None |
35 | 199 if url.startswith("http://"): |
200 # real URL | |
39
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201 metaUrl = url |
35 | 202 else: |
203 # online path | |
204 server=self.digilibBaseUrl+"/servlet/Texter?fn=" | |
40 | 205 metaUrl=server+url.replace("/mpiwg/online","") |
35 | 206 if not metaUrl.endswith("index.meta"): |
207 metaUrl += "/index.meta" | |
39
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208 |
40 | 209 for cnt in range(num_retries): |
35 | 210 try: |
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211 # patch dirk encoding fehler treten dann nicht mehr auf |
38 | 212 # dom = NonvalidatingReader.parseUri(metaUrl) |
39
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213 txt=urllib.urlopen(metaUrl).read() |
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214 dom = Parse(txt) |
40 | 215 break |
35 | 216 except: |
39
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217 zLOG.LOG("ERROR documentViewer (getIndexMata)", zLOG.INFO,"%s (%s)"%sys.exc_info()[0:2]) |
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218 |
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219 if dom is None: |
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220 raise IOError("Unable to read index meta from %s"%(url)) |
35 | 221 |
222 return dom | |
223 | |
224 | |
32 | 225 def getAuthinfoFromIndexMeta(self,path,docinfo=None,dom=None): |
35 | 226 """gets authorization info from the index.meta file at path or given by dom""" |
37 | 227 zLOG.LOG("documentViewer (getauthinfofromindexmeta)", zLOG.INFO,"path: %s"%(path)) |
32 | 228 |
229 access = None | |
230 | |
231 if docinfo is None: | |
232 docinfo = {} | |
233 | |
234 if dom is None: | |
35 | 235 dom = self.getIndexMeta(getParentDir(path)) |
32 | 236 |
237 acctype = dom.xpath("//access-conditions/access/@type") | |
238 if acctype and (len(acctype)>0): | |
239 access=acctype[0].value | |
35 | 240 if access in ['group', 'institution']: |
32 | 241 access = getTextFromNode(dom.xpath("//access-conditions/access/name")[0]).lower() |
242 | |
243 docinfo['accessType'] = access | |
244 return docinfo | |
29 | 245 |
32 | 246 |
22 | 247 def getBibinfoFromIndexMeta(self,path,docinfo=None,dom=None): |
35 | 248 """gets bibliographical info from the index.meta file at path or given by dom""" |
22 | 249 zLOG.LOG("documentViewer (getbibinfofromindexmeta)", zLOG.INFO,"path: %s"%(path)) |
20 | 250 |
22 | 251 if docinfo is None: |
252 docinfo = {} | |
253 | |
254 if dom is None: | |
35 | 255 dom = self.getIndexMeta(getParentDir(path)) |
256 | |
25 | 257 metaData=self.metadata.main.meta.bib |
258 bibtype=dom.xpath("//bib/@type") | |
259 if bibtype and (len(bibtype)>0): | |
260 bibtype=bibtype[0].value | |
20 | 261 else: |
25 | 262 bibtype="generic" |
263 bibtype=bibtype.replace("-"," ") # wrong typesiin index meta "-" instead of " " (not wrong! ROC) | |
264 bibmap=metaData.generateMappingForType(bibtype) | |
35 | 265 #print "bibmap: ", bibmap, " for: ", bibtype |
32 | 266 # if there is no mapping bibmap is empty (mapping sometimes has empty fields) |
31 | 267 if len(bibmap) > 0 and len(bibmap['author'][0]) > 0: |
25 | 268 docinfo['author']=getTextFromNode(dom.xpath("//bib/%s"%bibmap['author'][0])[0]) |
269 docinfo['title']=getTextFromNode(dom.xpath("//bib/%s"%bibmap['title'][0])[0]) | |
270 docinfo['year']=getTextFromNode(dom.xpath("//bib/%s"%bibmap['year'][0])[0]) | |
22 | 271 |
272 return docinfo | |
273 | |
274 | |
32 | 275 def getDocinfoFromTextTool(self,url,dom=None,docinfo=None): |
22 | 276 """parse texttool tag in index meta""" |
277 zLOG.LOG("documentViewer (getdocinfofromtexttool)", zLOG.INFO,"url: %s"%(url)) | |
278 if docinfo is None: | |
279 docinfo = {} | |
280 | |
32 | 281 if dom is None: |
35 | 282 dom = self.getIndexMeta(url) |
32 | 283 |
43
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284 archivePath = None |
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285 archiveName = None |
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286 |
32 | 287 archiveNames=dom.xpath("//resource/name") |
288 if archiveNames and (len(archiveNames)>0): | |
289 archiveName=getTextFromNode(archiveNames[0]) | |
43
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290 else: |
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291 zLOG.LOG("documentViewer (getdocinfofromtexttool)", zLOG.WARNING,"resource/name missing in: %s"%(url)) |
22 | 292 |
293 archivePaths=dom.xpath("//resource/archive-path") | |
294 if archivePaths and (len(archivePaths)>0): | |
295 archivePath=getTextFromNode(archivePaths[0]) | |
32 | 296 # clean up archive path |
297 if archivePath[0] != '/': | |
298 archivePath = '/' + archivePath | |
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299 if archiveName and (not archivePath.endswith(archiveName)): |
32 | 300 archivePath += "/" + archiveName |
22 | 301 else: |
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302 # try to get archive-path from url |
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303 zLOG.LOG("documentViewer (getdocinfofromtexttool)", zLOG.WARNING,"resource/archive-path missing in: %s"%(url)) |
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304 if (not url.startswith('http')): |
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305 archivePath = url.replace('index.meta', '') |
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306 |
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307 if archivePath is None: |
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308 # we balk without archive-path |
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309 raise IOError("Missing archive-path (for text-tool) in %s"%(url)) |
22 | 310 |
35 | 311 imageDirs=dom.xpath("//texttool/image") |
312 if imageDirs and (len(imageDirs)>0): | |
313 imageDir=getTextFromNode(imageDirs[0]) | |
22 | 314 else: |
37 | 315 # we balk with no image tag |
316 raise IOError("No text-tool info in %s"%(url)) | |
22 | 317 |
35 | 318 if imageDir and archivePath: |
319 #print "image: ", imageDir, " archivepath: ", archivePath | |
320 imageDir=os.path.join(archivePath,imageDir) | |
321 imageDir=imageDir.replace("/mpiwg/online",'') | |
322 docinfo=self.getDirinfoFromDigilib(imageDir,docinfo=docinfo) | |
323 docinfo['imagePath'] = imageDir | |
324 docinfo['imageURL'] = self.digilibBaseUrl+"/servlet/Scaler?fn="+imageDir | |
22 | 325 |
326 viewerUrls=dom.xpath("//texttool/digiliburlprefix") | |
327 if viewerUrls and (len(viewerUrls)>0): | |
328 viewerUrl=getTextFromNode(viewerUrls[0]) | |
31 | 329 docinfo['viewerURL'] = viewerUrl |
22 | 330 |
331 textUrls=dom.xpath("//texttool/text") | |
332 if textUrls and (len(textUrls)>0): | |
333 textUrl=getTextFromNode(textUrls[0]) | |
31 | 334 docinfo['textURL'] = textUrl |
22 | 335 |
336 docinfo = self.getBibinfoFromIndexMeta(url,docinfo=docinfo,dom=dom) | |
32 | 337 docinfo = self.getAuthinfoFromIndexMeta(url,docinfo=docinfo,dom=dom) |
22 | 338 return docinfo |
339 | |
340 | |
341 def getDocinfoFromImagePath(self,path,docinfo=None): | |
342 """path ist the path to the images it assumes that the index.meta file is one level higher.""" | |
343 zLOG.LOG("documentViewer (getdocinfofromimagepath)", zLOG.INFO,"path: %s"%(path)) | |
344 if docinfo is None: | |
345 docinfo = {} | |
29 | 346 path=path.replace("/mpiwg/online","") |
22 | 347 docinfo['imagePath'] = path |
31 | 348 docinfo=self.getDirinfoFromDigilib(path,docinfo=docinfo) |
349 imageUrl=self.digilibBaseUrl+"/servlet/Scaler?fn="+path | |
22 | 350 docinfo['imageURL'] = imageUrl |
351 | |
352 docinfo = self.getBibinfoFromIndexMeta(path,docinfo=docinfo) | |
32 | 353 docinfo = self.getAuthinfoFromIndexMeta(path,docinfo=docinfo) |
22 | 354 return docinfo |
20 | 355 |
22 | 356 |
357 def getDocinfo(self, mode, url): | |
358 """returns docinfo depending on mode""" | |
359 zLOG.LOG("documentViewer (getdocinfo)", zLOG.INFO,"mode: %s, url: %s"%(mode,url)) | |
360 # look for cached docinfo in session | |
361 if self.REQUEST.SESSION.has_key('docinfo'): | |
362 docinfo = self.REQUEST.SESSION['docinfo'] | |
363 # check if its still current | |
364 if docinfo is not None and docinfo.get('mode') == mode and docinfo.get('url') == url: | |
365 zLOG.LOG("documentViewer (getdocinfo)", zLOG.INFO,"docinfo in session: %s"%docinfo) | |
366 return docinfo | |
367 # new docinfo | |
368 docinfo = {'mode': mode, 'url': url} | |
369 if mode=="texttool": #index.meta with texttool information | |
370 docinfo = self.getDocinfoFromTextTool(url, docinfo=docinfo) | |
371 elif mode=="imagepath": | |
372 docinfo = self.getDocinfoFromImagePath(url, docinfo=docinfo) | |
373 else: | |
374 zLOG.LOG("documentViewer (getdocinfo)", zLOG.ERROR,"unknown mode!") | |
37 | 375 raise ValueError("Unknown mode %s"%(mode)) |
376 | |
22 | 377 zLOG.LOG("documentViewer (getdocinfo)", zLOG.INFO,"docinfo: %s"%docinfo) |
378 self.REQUEST.SESSION['docinfo'] = docinfo | |
379 return docinfo | |
20 | 380 |
381 | |
25 | 382 def getPageinfo(self, current, start=None, rows=None, cols=None, docinfo=None): |
22 | 383 """returns pageinfo with the given parameters""" |
384 pageinfo = {} | |
25 | 385 current = getInt(current) |
386 pageinfo['current'] = current | |
387 rows = int(rows or self.thumbrows) | |
388 pageinfo['rows'] = rows | |
389 cols = int(cols or self.thumbcols) | |
390 pageinfo['cols'] = cols | |
391 grpsize = cols * rows | |
392 pageinfo['groupsize'] = grpsize | |
393 start = getInt(start, default=(int(current / grpsize) * grpsize +1)) | |
22 | 394 pageinfo['start'] = start |
25 | 395 pageinfo['end'] = start + grpsize |
396 if docinfo is not None: | |
397 np = int(docinfo['numPages']) | |
398 pageinfo['end'] = min(pageinfo['end'], np) | |
399 pageinfo['numgroups'] = int(np / grpsize) | |
400 if np % grpsize > 0: | |
401 pageinfo['numgroups'] += 1 | |
402 | |
22 | 403 return pageinfo |
404 | |
0 | 405 def text(self,mode,url,pn): |
406 """give text""" | |
407 if mode=="texttool": #index.meta with texttool information | |
408 (viewerUrl,imagepath,textpath)=parseUrlTextTool(url) | |
409 | |
35 | 410 #print textpath |
0 | 411 try: |
412 dom = NonvalidatingReader.parseUri(textpath) | |
413 except: | |
414 return None | |
415 | |
416 list=[] | |
417 nodes=dom.xpath("//pb") | |
418 | |
419 node=nodes[int(pn)-1] | |
420 | |
421 p=node | |
422 | |
423 while p.tagName!="p": | |
424 p=p.parentNode | |
425 | |
426 | |
427 endNode=nodes[int(pn)] | |
428 | |
429 | |
430 e=endNode | |
431 | |
432 while e.tagName!="p": | |
433 e=e.parentNode | |
434 | |
435 | |
436 next=node.parentNode | |
437 | |
438 #sammle s | |
439 while next and (next!=endNode.parentNode): | |
440 list.append(next) | |
441 next=next.nextSibling | |
442 list.append(endNode.parentNode) | |
443 | |
444 if p==e:# beide im selben paragraphen | |
20 | 445 pass |
446 # else: | |
447 # next=p | |
448 # while next!=e: | |
449 # print next,e | |
450 # list.append(next) | |
451 # next=next.nextSibling | |
452 # | |
453 # for x in list: | |
454 # PrettyPrint(x) | |
455 # | |
456 # return list | |
22 | 457 # |
458 | |
459 def findDigilibUrl(self): | |
460 """try to get the digilib URL from zogilib""" | |
461 url = self.imageViewerUrl[:-1] + "/getScalerUrl" | |
462 try: | |
463 scaler = urlopen(url).read() | |
464 return scaler.replace("/servlet/Scaler?", "") | |
465 except: | |
466 return None | |
467 | |
32 | 468 def changeDocumentViewer(self,imageViewerUrl,title="",digilibBaseUrl=None,thumbrows=2,thumbcols=10,authgroups='mpiwg',RESPONSE=None): |
22 | 469 """init document viewer""" |
470 self.title=title | |
471 self.imageViewerUrl=imageViewerUrl | |
472 self.digilibBaseUrl = digilibBaseUrl | |
25 | 473 self.thumbrows = thumbrows |
474 self.thumbcols = thumbcols | |
32 | 475 self.authgroups = [s.strip().lower() for s in authgroups.split(',')] |
22 | 476 if RESPONSE is not None: |
477 RESPONSE.redirect('manage_main') | |
0 | 478 |
479 | |
480 | |
481 | |
482 # security.declareProtected('View management screens','renameImageForm') | |
483 | |
484 def manage_AddDocumentViewerForm(self): | |
485 """add the viewer form""" | |
22 | 486 pt=PageTemplateFile('zpt/addDocumentViewer', globals()).__of__(self) |
0 | 487 return pt() |
488 | |
489 def manage_AddDocumentViewer(self,id,imageViewerUrl="",title="",RESPONSE=None): | |
490 """add the viewer""" | |
491 newObj=documentViewer(id,imageViewerUrl,title) | |
492 self._setObject(id,newObj) | |
493 | |
494 if RESPONSE is not None: | |
495 RESPONSE.redirect('manage_main') | |
22 | 496 |
497 | |
498 ## | |
499 ## DocumentViewerTemplate class | |
500 ## | |
501 class DocumentViewerTemplate(ZopePageTemplate): | |
502 """Template for document viewer""" | |
503 meta_type="DocumentViewer Template" | |
504 | |
505 | |
506 def manage_addDocumentViewerTemplateForm(self): | |
507 """Form for adding""" | |
508 pt=PageTemplateFile('zpt/addDocumentViewerTemplate', globals()).__of__(self) | |
509 return pt() | |
510 | |
511 def manage_addDocumentViewerTemplate(self, id='viewer_main', title=None, text=None, | |
512 REQUEST=None, submit=None): | |
513 "Add a Page Template with optional file content." | |
514 | |
515 self._setObject(id, DocumentViewerTemplate(id)) | |
516 ob = getattr(self, id) | |
517 ob.pt_edit(open(os.path.join(package_home(globals()),'zpt/viewer_main.zpt')).read(),None) | |
518 if title: | |
519 ob.pt_setTitle(title) | |
520 try: | |
521 u = self.DestinationURL() | |
522 except AttributeError: | |
523 u = REQUEST['URL1'] | |
524 | |
525 u = "%s/%s" % (u, urllib.quote(id)) | |
526 REQUEST.RESPONSE.redirect(u+'/manage_main') | |
527 return '' | |
528 | |
529 | |
41 | 530 |