From 8063d211a91292d3901498d45d7a14037993c185 Mon Sep 17 00:00:00 2001
From: helmutm <helmutm@fd906abe-77d9-0310-91a1-e0d9ade77398>
Date: Tue, 4 Aug 2009 19:26:52 +0000
Subject: [PATCH] rearrange configuration stuff

git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@3494 fd906abe-77d9-0310-91a1-e0d9ade77398
---
 wiki/README.txt     |  2 +-
 wiki/base/config.py | 41 ++++++++++++++++++++++++++++-------------
 wiki/interfaces.py  | 33 +++++++++++++++++++++++++--------
 3 files changed, 54 insertions(+), 22 deletions(-)

diff --git a/wiki/README.txt b/wiki/README.txt
index d673f7a..eb0bf0d 100644
--- a/wiki/README.txt
+++ b/wiki/README.txt
@@ -20,7 +20,7 @@ to make sure the btree-based tracking link manager will be used.
   >>> manager = WikiManager()
 
   >>> linkManagerName = 'tracking'
-  >>> manager.linkManager = linkManagerName
+  >>> manager.setConfig('linkManager', linkManagerName)
   >>> wiki = manager.addWiki(Wiki('demo_wiki'))
   >>> startPage = wiki.createPage('start_page')
 
diff --git a/wiki/base/config.py b/wiki/base/config.py
index 138a5e3..dc3b8fd 100644
--- a/wiki/base/config.py
+++ b/wiki/base/config.py
@@ -24,7 +24,18 @@ $Id$
 
 from zope.interface import implements
 
-from cybertools.wiki.interfaces import IWikiConfiguration
+from cybertools.wiki.interfaces import IWikiConfigInfo, IWikiConfiguration
+
+
+class WikiConfigInfo(dict):
+
+    implements(IWikiConfigInfo)
+
+    def set(self, functionality, value):
+        self[functionality] = value
+
+    def __getattr__(self, attr):
+        return self.get(attr, None)
 
 
 class BaseConfiguration(object):
@@ -33,31 +44,35 @@ class BaseConfiguration(object):
 
     implements(IWikiConfiguration)
 
-    parent = None
-
-    writer = parser = None
+    _configInfo = None
 
     def getConfig(self, functionality):
-        c = self.get(functionality)
+        c = None
+        ci = self._configInfo
+        if ci is not None:
+            c = ci.get(functionality)
         if c is None:
             parent = self.getConfigParent()
             if parent is not None:
                 return parent.getConfig(functionality)
         return c
 
-    def get(self, key, default=None):
-        return getattr(self, key, None)
+    def setConfig(self, functionality, value):
+        if self._configInfo is None:
+            self._configInfo = WikiConfigInfo()
+        self._configInfo.set(functionality, value)
 
     def getConfigParent(self):
-        return self.parent
+        return None
 
 
 class WikiConfiguration(BaseConfiguration):
     """ A global utility providing the default settings.
     """
 
-    parser = 'docutils.rstx'
-    writer = 'docutils.html'
-    linkManager = 'basic'
-
-    nodeProcessors = dict(reference=['default'])
+    _configInfo = WikiConfigInfo(
+                    parser='docutils.rstx',
+                    writer='docutils.html',
+                    linkManager='basic',
+                    nodeProcessors=dict(reference=['default']),
+    )
diff --git a/wiki/interfaces.py b/wiki/interfaces.py
index 66002cc..64a1ed7 100644
--- a/wiki/interfaces.py
+++ b/wiki/interfaces.py
@@ -25,9 +25,8 @@ $Id$
 from zope.interface import Interface, Attribute
 
 
-class IWikiConfiguration(Interface):
-    """ Provides information about the implementations to be used for
-        the various kinds of wiki plug-ins.
+class IWikiConfigInfo(Interface):
+    """ A collection of configuration settings.
     """
 
     writer = Attribute('Plug-in component converting from internal tree '
@@ -35,16 +34,34 @@ class IWikiConfiguration(Interface):
     parser = Attribute('Plug-in component converting from text input '
                 'format to internal tree format.')
 
+    def get(functionality):
+        """ Return the setting for the functionality given or None if not set.
+        """
+
+    def set(functionality, value):
+        """ Register the value given for the functionality given.
+        """
+
+
+class IWikiConfiguration(Interface):
+    """ Provides information about the implementations to be used for
+        the various kinds of wiki plug-ins.
+    """
+
+    def getConfig(functionality):
+        """ Return the name of the component that should used for the
+            functionality given.
+        """
+
+    def setConfig(functionality, value):
+        """ Register the value given for the functionality given.
+        """
+
     def getConfigParent():
         """ Return the parent object in case this configuration does not
             provide configuration information for a certain functionality.
         """
 
-    def getConfig(functionality):
-        """ Return the name of the plugin that should used for the
-            functionality given.
-        """
-
 
 class IWikiManager(Interface):
     """ Manages wikis and wiki-related objects, like plugins.