Added debug_toolbar app to project.

[wolnelektury.git] / apps / debug_toolbar / toolbar / loader.py

diff --git a/apps/debug_toolbar/toolbar/loader.py b/apps/debug_toolbar/toolbar/loader.py
new file mode 100644 (file)
index 0000000..4164324
--- /dev/null
+++ b/apps/debug_toolbar/toolbar/loader.py
@@ -0,0 +1,49 @@
+"""
+The main DebugToolbar class that loads and renders the Toolbar.
+"""
+from django.template.loader import render_to_string
+from debug_toolbar.settings import DEBUG_TOOLBAR_PANELS
+
+class DebugToolbar(object):
+
+    def __init__(self, request):
+        self.request = request
+        self.panels = []
+        self.panel_list = []
+        self.content_list = []
+    
+    def load_panels(self):
+        """
+        Populate debug panel lists from settings.DEBUG_TOOLBAR_PANELS.
+        """
+        from django.conf import settings
+        from django.core import exceptions
+
+        for panel_path in DEBUG_TOOLBAR_PANELS:
+            try:
+                dot = panel_path.rindex('.')
+            except ValueError:
+                raise exceptions.ImproperlyConfigured, '%s isn\'t a debug panel module' % panel_path
+            panel_module, panel_classname = panel_path[:dot], panel_path[dot+1:]
+            try:
+                mod = __import__(panel_module, {}, {}, [''])
+            except ImportError, e:
+                raise exceptions.ImproperlyConfigured, 'Error importing debug panel %s: "%s"' % (panel_module, e)
+            try:
+                panel_class = getattr(mod, panel_classname)
+            except AttributeError:
+                raise exceptions.ImproperlyConfigured, 'Toolbar Panel module "%s" does not define a "%s" class' % (panel_module, panel_classname)
+
+            try:
+                panel_instance = panel_class(self.request)
+            except:
+                raise
+                continue # Some problem loading panel
+
+            self.panels.append(panel_instance)
+
+    def render_toolbar(self):
+        """
+        Renders the overall Toolbar with panels inside.
+        """
+        return render_to_string('debug_toolbar/base.html', {'panels': self.panels})