provide macro caching for standard views (was implemented for composer.layout only)

browser/renderer.pt

@@ -0,0 +1,6 @@
+<!-- $Id$ -->
+
+<tal:renderer define="view nocall:options/view;
+                      macro options/macro">
+  <metal:content use-macro="macro" />
+</tal:renderer>

browser/renderer.py

@@ -22,6 +22,10 @@ Use ZPT macros as layout renderers.
 $Id$
 """
 
+from zope.app.pagetemplate import ViewPageTemplateFile
+
+from cybertools.util.cache import cache
+
 
 class RendererFactory(object):
     """ Provider for ZPT macros.
@@ -58,3 +62,23 @@ class Renderer(object):
     def __call__(self):
         return self.template.macros[self.name]
 
+
+rendererTemplate = ViewPageTemplateFile('renderer.pt')
+
+class CachableRenderer(object):
+
+    lifetime = 3 * 3600
+    #lifetime = 24 * 3600
+
+    def __init__(self, view, renderer):
+        self.view = view
+        self.renderer = renderer
+
+    def getRenderMacroId(self, *args):
+        return 'renderer.' + '.'.join(args)
+
+    @cache(getRenderMacroId, lifetime=lifetime)
+    def renderMacro(self, *args):
+        return rendererTemplate(self.view, view=self.view, macro=self.renderer)
+
+

browser/view.py

@@ -30,6 +30,8 @@ from zope import component
 from zope.event import notify
 from zope.publisher.interfaces.browser import IBrowserSkinType
 
+from cybertools.browser.renderer import CachableRenderer
+
 
 mainTemplate = ViewPageTemplateFile('main.pt')
 popupTemplate = ViewPageTemplateFile('liquid/popup.pt')
@@ -67,6 +69,8 @@ class GenericView(object):
 
     template = macro = menu = skin = None
 
+    cachableRendererFactory = CachableRenderer
+
     _updated = False
 
     def setController(self, controller):
@@ -145,3 +149,6 @@ class GenericView(object):
                 applySkin(self.request, skin)
         self.skin = skin
 
+    def cachedRenderer(self, baseRenderer, *args):
+        cr = self.cachableRendererFactory(self, baseRenderer)
+        return cr.renderMacro(*args)