split engine/ into manifold/ (backend oriented) and unfold/ (the UI)

[myslice.git] / unfold / composite.py

diff --git a/unfold/composite.py b/unfold/composite.py
new file mode 100644 (file)
index 0000000..409b1bc
--- /dev/null
+++ b/unfold/composite.py
@@ -0,0 +1,31 @@
+from unfold.plugin import Plugin
+
+class Composite (Plugin):
+
+    def __init__ (self, sons=[], active=None, *args, **kwds):
+        Plugin.__init__ (self, *args, **kwds)
+        self.sons=sons
+        self.active=active
+        
+    def insert (self, plugin):
+        self.sons.append(plugin)
+
+    # xxx currently there is no guarantee that exactly one son will be active
+    def template_env (self, request):
+        # this is designed so as to support a template like
+        # {% for son in sons %} {{ son.rendered }} ...
+        def is_active (son):
+#            print 'comparing >%s< and >%s<'%(son.domid,self.active)
+            return son.domid==self.active
+        ranks=range(len(self.sons))
+        env = { 'sons':
+                 [ { 'rendered': son.render(request),
+                     'rank': rank,
+                     'active': is_active(son),
+                     'title': son.title,
+                     'domid': son.domid,
+                     'classname': son.classname,
+                     }
+                   for (son,rank) in zip(self.sons,ranks) ]}
+        return env
+