Revert "Factor headers data out of HeaderDebugPanel."

This reverts commit 4326cbb.

Author: robhudson

debug_toolbar/debug/headers.py

@@ -1,18 +1,36 @@
 from django.template.loader import render_to_string
 from django.utils.translation import ugettext_lazy as _
 from debug_toolbar.panels import DebugPanel
-from debug_toolbar.debug.headers import DebugHeaders
 
 class HeaderDebugPanel(DebugPanel):
     """
     A panel to display HTTP headers.
     """
     name = 'Header'
     has_content = True
-
-    def __init__(self, context={}):
-        super(HeaderDebugPanel, self).__init__(context)
-        self.debug_headers = DebugHeaders()
+    # List of headers we want to display
+    header_filter = (
+        'CONTENT_TYPE',
+        'HTTP_ACCEPT',
+        'HTTP_ACCEPT_CHARSET',
+        'HTTP_ACCEPT_ENCODING',
+        'HTTP_ACCEPT_LANGUAGE',
+        'HTTP_CACHE_CONTROL',
+        'HTTP_CONNECTION',
+        'HTTP_HOST',
+        'HTTP_KEEP_ALIVE',
+        'HTTP_REFERER',
+        'HTTP_USER_AGENT',
+        'QUERY_STRING',
+        'REMOTE_ADDR',
+        'REMOTE_HOST',
+        'REQUEST_METHOD',
+        'SCRIPT_NAME',
+        'SERVER_NAME',
+        'SERVER_PORT',
+        'SERVER_PROTOCOL',
+        'SERVER_SOFTWARE',
+    )
 
     def nav_title(self):
         return _('HTTP Headers')
@@ -23,13 +41,14 @@ def title(self):
     def url(self):
         return ''
 
+    def process_request(self, request):
+        self.headers = dict(
+            [(k, request.META[k]) for k in self.header_filter if k in request.META]
+        )
+
     def content(self):
         context = self.context.copy()
         context.update({
             'headers': self.headers
         })
         return render_to_string('debug_toolbar/panels/headers.html', context)
-
-    def process_request(self, request):
-        self.headers = self.debug_headers.available_headers(request)
-