- provide additional metaInfo field, e.g. for storing source and rights

information for media assets; show this in info popup;
  link image to info popup in Lobo skin standard views
- Lobo listings: allow for restriction of children listed to certain types

CHANGES.txt

@@ -6,6 +6,10 @@ $Id$
 1.1
 ---
 
+- provide additional ``metaInfo`` field, e.g. for storing source and rights
+  information for media assets; show this in info popup;
+  link image to info popup in Lobo skin standard views
+- Lobo listings: allow for restriction of children listed to certain types
 - media assets: allow for access restriction for viewing larger than a
   given maximum size (via option ``media.unauthorized_max_size``)
 - external editor functionality: include title field in data in order to

browser/info.pt

@@ -39,7 +39,7 @@
     <tr tal:repeat="info item/additionalInfos">
       <td><span i18n:translate=""
                 tal:content="info/label">Creators</span>:</td>
-      <td tal:content="info/value"></td>
+      <td tal:content="structure info/value"></td>
     </tr>
     <tr>
       <td colspan="2"><br />

browser/lobo/standard.pt

@@ -48,7 +48,8 @@
 <metal:block define-macro="header1">
   <div tal:define="cell part/getView">
     <metal:headline use-macro="item/macros/headline" />
-    <div tal:attributes="class python:part.cssClass[0]">
+    <div tal:define="showImageLink python:True"
+         tal:attributes="class python:part.cssClass[0]">
       <metal:image use-macro="item/macros/image" />
     </div>
     <div tal:attributes="class python:part.cssClass[1]">
@@ -65,7 +66,8 @@
 
 
 <metal:block define-macro="header2">
-  <div tal:define="cell part/getView">
+  <div tal:define="cell part/getView;
+                   showImageLink python:True">
     <metal:headline use-macro="item/macros/headline" />
     <metal:image use-macro="item/macros/image" />
     <metal:text use-macro="item/macros/text" />
@@ -76,9 +78,18 @@
 <!-- basic component macros -->
 
 <metal:image define-macro="image">
+  <tal:img condition="cell/img">
+    <a title="Information about this object."
+       tal:omit-tag="not:showImageLink|python:False"
+       i18n:attributes="title"
+       tal:define="url string:${cell/img/url}/object_info.html"
+       tal:attributes="href url;
+                       onclick string:objectDialog('', '$url?dialog=');; return false">
       <img tal:condition="cell/img"
            tal:attributes="src cell/img/src;
                            class cell/img/cssClass" />
+    </a>
+  </tal:img>
 </metal:image>
 
 

browser/lobo/standard.py

@@ -50,6 +50,11 @@ class Base(BaseConceptView):
     def macro(self):
         return self.macros[self.macroName]
 
+    @Lazy
+    def params(self):
+        ann = self.request.annotations.get('loops.view', {})
+        return parse_qs(ann.get('params') or '')
+
 
 class ConceptView(BaseConceptView):
 
@@ -106,10 +111,10 @@ class ConceptView(BaseConceptView):
     @Lazy
     def img(self):
         for r in self.resources['images']:
-                src = ('%s/mediaasset.html?v=%s' %
-                            (self.nodeView.getUrlForTarget(r),
-                             self.parentView.imageSize))
-                return dict(src=src, cssClass=self.parentView.imageCssClass)
+                url = self.nodeView.getUrlForTarget(r)
+                src = ('%s/mediaasset.html?v=%s' % (url, self.parentView.imageSize))
+                return dict(src=src, url=url,
+                            cssClass=self.parentView.imageCssClass)
 
 
 class ConceptRelationView(BaseConceptRelationView, ConceptView):
@@ -127,9 +132,7 @@ class Layout(Base):
 
     def getParts(self):
         result = []
-        ann = self.request.annotations.get('loops.view', {})
-        params = parse_qs(ann.get('params') or '')
-        parts = (params.get('parts') or ['h1,g3'])[0].split(',')
+        parts = (self.params.get('parts') or ['h1,g3'])[0].split(',')
         for p in parts:
             viewName = 'lobo_' + p
             view = component.queryMultiAdapter((self.context, self.request),
@@ -147,9 +150,14 @@ class BasePart(Base):
     gridPattern = []
 
     def getChildren(self):
+        subtypeNames =  (self.params.get('subtypes') or [''])[0].split(',')
+        subtypes = [self.conceptManager[st] for st in subtypeNames if st]
         result = []
-        for idx, r in enumerate(
-                self.context.getChildRelations([self.defaultPredicate])):
+        childRels = self.context.getChildRelations([self.defaultPredicate])
+        if subtypes:
+            childRels = [r for r in childRels
+                           if r.second.conceptType in subtypes]
+        for idx, r in enumerate(childRels):
             result.append(ConceptRelationView(r, self.request,
                                 contextIsSecond=True, parent=self, idx=idx))
         return result

concept.py

@@ -107,6 +107,8 @@ class Concept(Contained, Persistent):
 
     workspaceInformation = None
 
+    metaInfo = u''
+
     def __init__(self, title=u''):
         self.title = title
 

interfaces.py

@@ -1,5 +1,5 @@
 #
-#  Copyright (c) 2010 Helmut Merz helmutm@cy55.de
+#  Copyright (c) 2011 Helmut Merz helmutm@cy55.de
 #
 #  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
@@ -90,6 +90,9 @@ class IConceptSchema(Interface):
         missing_value=u'',
         required=False)
 
+    metaInfo = Attribute('Optional additional information about the concept '
+                    'provided as text.')
+
 # let these fields always appear on top:
 IConceptSchema['title'].order = 1
 IConceptSchema['description'].order = 2
@@ -291,6 +294,9 @@ class IBaseResource(ILoopsObject):
                 missing_value='',
                 required=False)
 
+    metaInfo = Attribute('Optional additional information about the resource '
+                    'provided as text.')
+
     def getType():
         """ Return a concept that provides the object's type, i.e. the
             resourceType attribute.
@@ -361,6 +367,9 @@ class IResourceSchema(Interface):
                 missing_value='',
                 required=False)
 
+    metaInfo = Attribute('Optional additional information about the resource '
+                    'provided as text.')
+
 
 class IResource(ILoopsObject, IPotentialTarget):
     """ A resource is an atomic information element that is made
@@ -404,7 +413,7 @@ class IDocument(IDocumentSchema, IResource):
 
 
 # media asset is obsolete - replaced by plain Resource with
-# resourceType = file.
+# resourceType = file or the new media asset stuff in loops.media.
 
 class IMediaAssetView(IResourceSchema):
     """ Used for accessing a media asset via a node's target attribute"""

locales/de/LC_MESSAGES/loops.po

@@ -3,7 +3,7 @@ msgstr ""
 
 "Project-Id-Version: $Id$\n"
 "POT-Creation-Date: 2007-05-22 12:00 CET\n"
-"PO-Revision-Date: 2011-04-30 12:00 CET\n"
+"PO-Revision-Date: 2011-08-21 12:00 CET\n"
 "Last-Translator: Helmut Merz <helmutm@cy55.de>\n"
 "Language-Team: loops developers <helmutm@cy55.de>\n"
 "MIME-Version: 1.0\n"
@@ -233,6 +233,9 @@ msgstr "Aktionen"
 msgid "Print this page"
 msgstr "Diese Seite ausdrucken"
 
+msgid "Object Information"
+msgstr "Informationen über dieses Objekt"
+
 msgid "Information about this object."
 msgstr "Informationen über dieses Objekt."
 
@@ -245,6 +248,9 @@ msgstr "Mit 'External Editor' bearbeiten."
 msgid "Type"
 msgstr "Typ"
 
+msgid "modified"
+msgstr "Änderungsdatum"
+
 msgid "Modification Date"
 msgstr "Änderungsdatum"
 
@@ -254,6 +260,12 @@ msgstr "Größe"
 msgid "Author(s)"
 msgstr "Autor(en)"
 
+msgid "Creators"
+msgstr "Bearbeiter"
+
+msgid "Meta Information"
+msgstr "Meta-Informationen"
+
 msgid "Parents"
 msgstr "Oberbegriffe"
 

media/asset.py

@@ -52,6 +52,7 @@ class MediaAsset(MediaAssetFile, ExternalFileAdapter):
     implements(IMediaAsset)
 
     _adapterAttributes = ExternalFileAdapter._adapterAttributes + ('modified',)
+    _contextAttributes = list(IMediaAsset)
 
     isMediaAsset = True
 

media/browser/asset.py

@@ -31,6 +31,7 @@ from zope.security.interfaces import Unauthorized
 from loops.browser.node import NodeView
 from loops.browser.resource import ResourceView, resource_macros
 from loops.common import adapted
+from loops.util import _
 from loops import util
 
 template = ViewPageTemplateFile('asset.pt')
@@ -81,6 +82,14 @@ class MediaAssetView(ResourceView):
                 return False
         return True
 
+    @Lazy
+    def additionalInfos(self):
+        mi = self.adapted.metaInfo
+        if not mi:
+            return []
+        return [dict(label=_(u'Meta Information'),
+                     value=self.renderDescription(mi))]
+
 
 class MediaAssetNodeView(NodeView):
 

media/interfaces.py

@@ -1,5 +1,5 @@
 #
-#  Copyright (c) 2008 Helmut Merz helmutm@cy55.de
+#  Copyright (c) 2011 Helmut Merz helmutm@cy55.de
 #
 #  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
@@ -22,11 +22,20 @@ Media asset management interface definitions.
 $Id$
 """
 
+from zope import schema
+
 from cybertools.media.interfaces import IMediaAsset
 from loops.interfaces import IExternalFile
+from loops.util import _
 
 
 class IMediaAsset(IMediaAsset, IExternalFile):
 
-    pass
+    metaInfo = schema.Text(
+                title=_(u'Meta Information'),
+                description=_(u'A text giving some background information '
+                        u'about a media asset, like source, rights, etc.'),
+                default=u'',
+                missing_value=u'',
+                required=False)
 

resource.py

@@ -96,6 +96,8 @@ class Resource(Image, Contained):
 
     storageName = None
 
+    metaInfo = u''
+
     _size = _width = _height = 0
 
     def __init__(self, title=u''):