Use css for darkmode

judge/admin/problem.py

@@ -31,7 +31,6 @@ from judge.widgets import (
     AdminSelect2Widget,
     CheckboxSelectMultipleWithSelectAll,
     HeavyPreviewAdminPageDownWidget,
-    HeavyPreviewPageDownWidget,
 )
 
 MEMORY_UNITS = (("KB", "KB"), ("MB", "MB"))

judge/caching.py

@@ -8,3 +8,4 @@ def finished_submission(sub):
         keys += ["contest_complete:%d" % participation.id]
         keys += ["contest_attempted:%d" % participation.id]
     cache.delete_many(keys)
+

judge/middleware.py

@@ -70,3 +70,15 @@ class ContestMiddleware(object):
             request.participation = None
         request.in_contest_mode = request.in_contest and request.contest_mode
         return self.get_response(request)
+
+
+class DarkModeMiddleware(object):
+    def __init__(self, get_response):
+        self.get_response = get_response
+
+    def __call__(self, request):
+        if "darkmode" in request.GET:
+            return HttpResponseRedirect(
+                reverse("toggle_darkmode") + "?next=" + urlquote(request.path)
+            )
+        return self.get_response(request)

judge/template_context.py

@@ -22,6 +22,7 @@ def get_resource(request):
         scheme = "https"
     else:
         scheme = "http"
+
     return {
         "PYGMENT_THEME": settings.PYGMENT_THEME,
         "INLINE_JQUERY": settings.INLINE_JQUERY,
@@ -30,6 +31,7 @@ def get_resource(request):
         "FONTAWESOME_CSS": settings.FONTAWESOME_CSS,
         "DMOJ_SCHEME": scheme,
         "DMOJ_CANONICAL": settings.DMOJ_CANONICAL,
+        "use_darkmode": request.session.get("darkmode", False) == True,
     }
 
 

judge/views/user.py

@@ -623,3 +623,11 @@ def sample_import_users(request):
     response = HttpResponse(content, content_type="text/plain")
     response["Content-Disposition"] = "attachment; filename={0}".format(filename)
     return response
+
+
+def toggle_darkmode(request):
+    path = request.GET.get("next")
+    if not path:
+        return HttpResponseBadRequest()
+    request.session["darkmode"] = not request.session.get("darkmode", False)
+    return HttpResponseRedirect(path)

judge/widgets/pagedown.py

@@ -40,7 +40,6 @@ else:
         class Media:
             css = {
                 "all": [
-                    "pagedown_widget.css",
                     "markdown.css",
                 ]
             }
@@ -49,6 +48,7 @@ else:
         class Media:
             css = {
                 "all": [
+                    "pagedown_widget.css",
                     "content-description.css",
                     "admin/css/pagedown.css",
                     "markdown.css",
@@ -104,7 +104,6 @@ else:
             }
 
         class Media:
-            css = {"all": ["dmmd-preview.css"]}
             js = ["dmmd-preview.js"]
 
     class HeavyPreviewAdminPageDownWidget(
@@ -117,5 +116,6 @@ else:
                     "table.css",
                     "ranks.css",
                     "markdown.css",
+                    "dmmd-preview.css",
                 ]
             }