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

[myslice.git] / engine / prelude.py

diff --git a/engine/prelude.py b/engine/prelude.py
deleted file mode 100644 (file)
index 20beb7d..0000000
--- a/engine/prelude.py
+++ /dev/null
@@ -1,72 +0,0 @@
-from types import StringTypes, ListType
-
-from django.template.loader import render_to_string
-
-debug=True
-
-class Prelude:
-
-    """A class for collecting dependencies on js/css files or fragments"""
-
-    keys=[ 'js_files','css_files','js_chunks', 'css_chunks' ]
-    def __init__ (self, js_files=None, css_files=None, js_chunks=None, css_chunks=None):
-        # it's tempting to use sets but sets are not ordered..
-        self.js_files  = Prelude._normalize(js_files)
-        self.css_files = Prelude._normalize(css_files)
-        self.js_chunks = Prelude._normalize(js_chunks)
-        self.css_chunks= Prelude._normalize(css_chunks)
-
-    @staticmethod
-    def _normalize (input):
-        if not input:                           return []
-        elif isinstance (input, ListType):      return input
-        elif isinstance (input, StringTypes):   return [ input ]
-        else:                                   return list (input)
-
-    def add_js_files (self, x):
-        for i in Prelude._normalize (x):
-            if i not in self.js_files: self.js_files.append(i)
-    def add_css_files (self, x):
-        for i in Prelude._normalize (x):
-            if i not in self.css_files: self.css_files.append(i)
-    def add_js_chunks (self, x):
-        self.js_chunks += Prelude._normalize (x)
-    def add_css_chunks (self, x):
-        self.css_chunks += Prelude._normalize (x)
-
-    def inspect_string (self,msg):
-        result =  'Prelude.inspect %s (%s) with '%(msg,self)
-        result += ",".join( [ "%s->%s"%(k,len(getattr(self,k))) for k in ['js_files','js_chunks','css_files','css_chunks'] ] )
-        return result
-    def inspect (self,msg):
-        print self.inspect_string(msg)
-
-    # first attempt was to use a simple dict like this
-    #    env={}
-    #    env['js_files']=  self.js_files
-    #    env['css_files']= self.css_files
-    #    env['js_chunks']= '\n'.join(self.js_chunks)
-    #    env['css_chunks']='\n'.join(self.css_chunks)
-    #    return env
-    # together with this in layout-myslice.html
-    # {% for js_file in js_files %} {% insert_str prelude js_file %} {% endfor %}
-    # {% for css_file in css_files %} {% insert_str prelude css_file %} {% endfor %}
-    # somehow however this would not work too well, 
-    # probably insert_above is not powerful enough to handle that
-    # 
-    # so a much simpler and safer approach is for use to compute the html header directly
-    def template_env (self): 
-        env={}
-        env['js_files']=  self.js_files
-        env['css_files']= self.css_files
-        env['js_chunks']= self.js_chunks
-        env['css_chunks']=self.css_chunks
-        if debug:
-            print "prelude has %d js_files, %d css files, %d js chunks and %d css_chunks"%\
-                (len(self.js_files),len(self.css_files),len(self.js_chunks),len(self.css_chunks),)
-        # not sure how this should be done more cleanly
-        from myslice.settings import STATIC_URL
-        env ['STATIC_URL'] = STATIC_URL
-        # render this with prelude.html and put the result in header_prelude
-        header_prelude = render_to_string ('header-prelude.html',env)
-        return { 'header_prelude' : header_prelude }