Basic form/view set-up for configuring a node (including target creation)

git-svn-id: svn://svn.cy55.de/Zope3/src/loops/trunk@1032 fd906abe-77d9-0310-91a1-e0d9ade77398

README.txt

@@ -9,6 +9,7 @@ loops - Linked Objects for Organization and Processing Services
   
   >>> from zope.app import zapi
   >>> from zope.app.tests import ztapi
+  >>> from zope.interface import Interface
   >>> from zope.publisher.browser import TestRequest
   
 
@@ -291,6 +292,15 @@ target may be moved or renamed without any problems.)
   >>> m111 in doc1.getClients()
   True
 
+There is a special edit view class that can be used to configure a node
+in a way, that allows the creation of a target object on the fly.
+(We here use the base class providing the method for this action; the real
+application uses a subclass that does all the other stuff for form handling.)
+
+  >>> from loops.browser.node import ConfigureBaseView
+  >>> view = ConfigureBaseView(INodeConfigSchema(m111), TestRequest())
+  >>> view.checkCreateTarget()
+
 It is also possible to edit a target's attributes directly in an
 edit form provided by the node:
 

browser/configure.zcml

@@ -308,9 +308,10 @@
       label="Configure Node"
       name="configure.html"
       schema="loops.interfaces.INodeConfigSchema"
-      fields="title description nodeType targetType targetUri createTarget"
+      fields="title description nodeType targetUri targetType createTarget"
       for="loops.interfaces.INode"
       template="edit.pt"
+      class="loops.browser.node.ConfigureView"
       permission="zope.ManageContent"
       menu="zmi_views" title="Configure">
 

browser/node.py

@@ -94,6 +94,33 @@ class NodeView(object):
         return item.context == self.context
 
 
+class ConfigureBaseView(object):
+    """ Helper view object for editing/configuring a node, providing the
+        stuff needed for creating a target object.
+    """
+
+    def __init__(self, context, request):
+        self.context = context
+        self.request = request
+
+    def checkCreateTarget(self):
+        pass
+
+
+class ConfigureView(object):
+    """ An editing view for configuring a node, optionally creating
+        a target object.
+    """
+
+    def __init__(self, context, request):
+        super(ConfigureView, self).__init__(context, request)
+        self.delegate = ConfigureBaseView(context, request)
+
+    def update(self):
+        self.delegate.checkCreateTarget()
+        return super(ConfigureView, self).update()
+
+
 class OrderedContainerView(JustContents):
     """ A view providing the necessary methods for moving sub-objects
         within an ordered container.

view.py

@@ -166,7 +166,7 @@ class NodeConfigAdapter(object):
 
     def __init__(self, context):
         self.context = removeSecurityProxy(context)
-        #self.context = context
+        self._targetType = None
 
     implements(INodeConfigSchema)
     adapts(INode)
@@ -208,9 +208,17 @@ class NodeConfigAdapter(object):
 
     def getTargetType(self):
         target = self.context.target
-        return '%s.%s' % (target.__module__, target.__class__.__name__)
+        if target:
+            return '%s.%s' % (target.__module__, target.__class__.__name__)
+        return None
     def setTargetType(self, tt):
-        pass
+        self._targetType = tt  # to be able to use it in setCreateTarget()
     targetType = property(getTargetType, setTargetType)
-    
+
+    def setCreateTarget(self, value):
+        if value:
+            print 'targetType:', self._targetType or self.targetType
+    def getCreateTarget(self): return False
+    createTarget = property(getCreateTarget, setCreateTarget)
+