prepare NodeAdapter stuff; refactor version as preparation for i18n-aware resources

git-svn-id: svn://svn.cy55.de/Zope3/src/loops/trunk@2245 fd906abe-77d9-0310-91a1-e0d9ade77398

interfaces.py

@@ -419,14 +419,7 @@ class IBaseNode(IOrderedContainer):
         """
 
 
-class INode(IView, IBaseNode):
-    """ A node is a view that may contain other views, thus building a
-        menu or folder hierarchy.
-
-        A node may be a content object on its own; for this reason it
-        has a body attribute that may be shown e.g. on web pages.
-    """
-    contains(IView)
+class INodeSchema(IView):
 
     nodeType = schema.Choice(
         title=_(u'Node Type'),
@@ -449,6 +442,16 @@ class INode(IView, IBaseNode):
 
     contentType = Attribute(_(u'Content type (format) of the body'))
 
+
+class INode(INodeSchema, IBaseNode):
+    """ A node is a view that may contain other views, thus building a
+        menu or folder hierarchy.
+
+        A node may be a content object on its own; for this reason it
+        has a body attribute that may be shown e.g. on web pages.
+    """
+    contains(IView)
+
     def getParentNode(nodeTypes=None):
         """ Return the next node up the node hierarchy. If the nodeTypes
             parameter is given, search for the next node that has one of
@@ -488,6 +491,12 @@ class INode(IView, IBaseNode):
         """
 
 
+class INodeAdapter(Interface):
+    """ Base interface for adapters that provide nodes with additional
+        capabilities.
+    """
+
+
 class IViewManager(ILoopsObject, IBaseNode):
     """ A manager/container for views.
     """

tests/setup.py

@@ -42,6 +42,8 @@ from loops.resource import IndexAttributes as ResourceIndexAttributes
 from loops.schema import ResourceSchemaFactory, FileSchemaFactory, NoteSchemaFactory
 from loops.setup import SetupManager, addObject
 from loops.type import LoopsType, ConceptType, ResourceType, TypeConcept
+from loops.view import NodeAdapter
+
 
 class ClientIdManager(object):
     """ dummy, for testing only """
@@ -78,6 +80,7 @@ class TestSite(object):
         component.provideAdapter(TypeConcept)
         component.provideAdapter(FileAdapter, provides=IFile)
         component.provideAdapter(TextDocumentAdapter, provides=ITextDocument)
+        component.provideAdapter(NodeAdapter)
         component.provideAdapter(NameChooser)
         component.provideAdapter(Instance)
         component.provideAdapter(Editor, name='editor')

versioning/versionable.py

@@ -112,24 +112,17 @@ class VersionableResource(object):
         m = self.versionableMaster
         return self.versionableMaster.getVersioningAttribute('releasedVersion', None)
 
-    def createVersion(self, level=1, comment=u''):
-        context = self.context
+    def createVersionObject(self, versionNumbers, variantIds, comment=u''):
         versionableMaster = self.versionableMaster
-        # get the new version numbers
-        vn = list(IVersionable(self.currentVersion).versionNumbers)
-        while len(vn) <= level:
-            vn.append(1)
-        vn[level] += 1
-        for l in range(level+1, len(vn)):
-            # reset lower levels
-            vn[l] = 1
-        # create new object
+        versionableMaster.initVersions()
+        context = self.context
+        # create object
         cls = context.__class__
         obj = cls()
         # set versioning attributes of new object
         versionableObj = IVersionable(obj)
-        versionableObj.setVersioningAttribute('versionNumbers', tuple(vn))
-        versionableObj.setVersioningAttribute('variantIds', self.variantIds)
+        versionableObj.setVersioningAttribute('versionNumbers', tuple(versionNumbers))
+        versionableObj.setVersioningAttribute('variantIds', variantIds)
         versionableObj.setVersioningAttribute('master', self.master)
         versionableObj.setVersioningAttribute('parent', context)
         versionableObj.setVersioningAttribute('comment', comment)
@@ -139,6 +132,8 @@ class VersionableResource(object):
                                  extensions.get(context.contentType, ''),
                                  versionId)
         getParent(context)[name] = obj
+        # record version on master
+        self.versions[versionableObj.versionId] = obj
         # set resource attributes
         ti = IType(context).typeInterface
         attrs = set((ti and list(ti) or [])
@@ -147,10 +142,21 @@ class VersionableResource(object):
         adaptedObj = ti and ti(obj) or obj
         for attr in attrs:
             setattr(adaptedObj, attr, getattr(adaptedContext, attr))
+        return obj
+
+    def createVersion(self, level=1, comment=u''):
+        # get the new version numbers
+        vn = list(IVersionable(self.currentVersion).versionNumbers)
+        while len(vn) <= level:
+            vn.append(1)
+        vn[level] += 1
+        for l in range(level+1, len(vn)):
+            # reset lower levels
+            vn[l] = 1
+        # create new object
+        obj = self.createVersionObject(vn, self.variantIds, comment)
         # set attributes of the master version
-        versionableMaster.setVersioningAttribute('currentVersion', obj)
-        versionableMaster.initVersions()
-        self.versions[versionId] = obj
+        self.versionableMaster.setVersioningAttribute('currentVersion', obj)
         return obj
 
     def generateName(self, name, ext, versionId):

view.py

@@ -42,7 +42,8 @@ from cybertools.relation.interfaces import IRelationRegistry, IRelatable
 from cybertools.util.jeep import Jeep
 
 from loops.base import ParentInfo
-from loops.interfaces import IView, INode
+from loops.common import AdapterBase
+from loops.interfaces import IView, INode, INodeSchema, INodeAdapter
 from loops.interfaces import IViewManager, INodeContained
 from loops.interfaces import ILoopsContained
 from loops.interfaces import ITargetRelation
@@ -196,6 +197,20 @@ class TargetRelation(DyadicRelation):
 
 # adapters
 
+class NodeAdapter(AdapterBase):
+    """ Allows nodes to be adapted like concepts and resources, e.g.
+        for i18n (needs derivation from I18NAdapterBase),
+        specific capabilities or dynamic attributes.
+    """
+
+    implements(INodeAdapter)
+    adapts(INode)
+
+    _contextAttributes = ('title', 'description', 'body',)
+
+
+# traveral adapter
+
 class NodeTraverser(ItemTraverser):
 
     adapts(INode)