Autre approche pour la surcharge : on surcharge « catalog_object », une méthode plus...

[Plinn.git] / AttachmentTool.py

diff --git a/AttachmentTool.py b/AttachmentTool.py
index 4df5a3f..87535c7 100644 (file)
--- a/AttachmentTool.py
+++ b/AttachmentTool.py
@@ -28,8 +28,10 @@ from Acquisition import aq_base
 from Globals import InitializeClass
 from OFS.SimpleItem import SimpleItem
 from OFS.Folder import Folder
-from OFS.Image import File, cookId
+from OFS.Image import cookId
+from Products.Photo.blobbases import File
 from zExceptions import Unauthorized
+from zExceptions import BadRequest
 from Products.Photo import Photo
 from Products.CMFCore.utils import UniqueObject, getToolByName, getUtilityByInterfaceName
 from Products.CMFCore.permissions import ModifyPortalContent
@@ -44,7 +46,9 @@ from webdav.common import Locked
 from webdav.common import PreconditionFailed
 from zope.contenttype import guess_content_type
 
-
+from libxml2 import HTML_PARSE_RECOVER, HTML_PARSE_NOERROR, HTML_PARSE_NOWARNING
+from libxml2 import htmlReadDoc
+PARSE_OPTIONS = HTML_PARSE_RECOVER + HTML_PARSE_NOERROR + HTML_PARSE_NOWARNING
 
 class AttachmentTool( UniqueObject, SimpleItem):
     """ Links attachment objects to contents.
@@ -114,6 +118,16 @@ class AttachmentContainer (Folder):
     def __init__(self):
         self.id = 'attachments'
 
+    security.declarePrivate('checkIdAvailable')
+    def checkIdAvailable(self, id):
+        try:
+            self._checkId(id)
+        except BadRequest:
+            return False
+        else:
+            return True
+
+
     security.declareProtected(ModifyPortalContent, 'put_upload')
     def put_upload(self, REQUEST, RESPONSE):
         """ Upload a content thru webdav put method.
@@ -174,7 +188,37 @@ class AttachmentContainer (Folder):
         ob.PUT(REQUEST, RESPONSE)
         RESPONSE.setStatus(httpRespCode)
         RESPONSE.setHeader('Content-Type', 'text/xml;;charset=utf-8')
-        return '<element id="%s" title="%s"/>' % (ob.getId(), escape(ob.title_or_id()))
-
+        if ob.meta_type == 'Blob File' :
+            return '<element id="%s" title="%s"/>' % (ob.getId(), escape(ob.title_or_id()))
+        elif ob.meta_type == 'Photo' :
+            width, height = ob.getResizedImageSize(size=(310, 310))
+            return '<element src="%(src)s" title="%(title)s" width="%(width)d" height="%(height)d"/>' % \
+                {'src' : 'attachments/%s/getResizedImage?size=%d_%d' % (ob.getId(), width, height),
+                 'title' : escape(ob.title_or_id()),
+                 'width' : width,
+                 'height' : height
+                 }
+    
+    security.declareProtected(ModifyPortalContent, 'removeUnusedAttachments')
+    def removeUnusedAttachments(self, html) :
+        html = '<div>%s</div>' % html
+        doc = htmlReadDoc(html, '', None, PARSE_OPTIONS)
+        used = {}
+
+        hrefs = doc.xpathEval('//a/@href')
+        for href in [a.get_content() for a in hrefs] :
+            if href.startswith('attachments/') :
+                used[href[len('attachments/'):]] = True
+
+        srcs = doc.xpathEval('//img/@src')
+        for src in [a.get_content() for a in srcs] :
+            if src.startswith('attachments/') :
+                parts = src.split('/')
+                if len(parts) >=2 :
+                    used[parts[1]] = True
+        
+        unused = [id for id in self.objectIds() if not used.has_key(id)]
+        if unused :
+            self.manage_delObjects(unused)
 
 InitializeClass(AttachmentContainer)
\ No newline at end of file