Cloned DMOJ

judge/widgets/pagedown.py

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+from django.contrib.admin import widgets as admin_widgets
+from django.forms.utils import flatatt
+from django.template.loader import get_template
+from django.utils.encoding import force_text
+from django.utils.html import conditional_escape
+
+from judge.widgets.mixins import CompressorWidgetMixin
+
+__all__ = ['PagedownWidget', 'AdminPagedownWidget',
+           'MathJaxPagedownWidget', 'MathJaxAdminPagedownWidget',
+           'HeavyPreviewPageDownWidget', 'HeavyPreviewAdminPageDownWidget']
+
+try:
+    from pagedown.widgets import PagedownWidget as OldPagedownWidget
+except ImportError:
+    PagedownWidget = None
+    AdminPagedownWidget = None
+    MathJaxPagedownWidget = None
+    MathJaxAdminPagedownWidget = None
+    HeavyPreviewPageDownWidget = None
+    HeavyPreviewAdminPageDownWidget = None
+else:
+    class PagedownWidget(CompressorWidgetMixin, OldPagedownWidget):
+        # The goal here is to compress all the pagedown JS into one file.
+        # We do not want any further compress down the chain, because
+        # 1. we'll creating multiple large JS files to download.
+        # 2. this is not a problem here because all the pagedown JS files will be used together.
+        compress_js = True
+
+        def __init__(self, *args, **kwargs):
+            kwargs.setdefault('css', ('pagedown_widget.css',))
+            super(PagedownWidget, self).__init__(*args, **kwargs)
+
+
+    class AdminPagedownWidget(PagedownWidget, admin_widgets.AdminTextareaWidget):
+        class Media:
+            css = {'all': [
+                'content-description.css',
+                'admin/css/pagedown.css',
+            ]}
+            js = ['admin/js/pagedown.js']
+
+
+    class MathJaxPagedownWidget(PagedownWidget):
+        class Media:
+            js = [
+                'mathjax_config.js',
+                'https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js?config=TeX-AMS-MML_HTMLorMML',
+                'pagedown_math.js',
+            ]
+
+
+    class MathJaxAdminPagedownWidget(AdminPagedownWidget, MathJaxPagedownWidget):
+        pass
+
+
+    class HeavyPreviewPageDownWidget(PagedownWidget):
+        def __init__(self, *args, **kwargs):
+            kwargs.setdefault('template', 'pagedown.html')
+            self.preview_url = kwargs.pop('preview')
+            self.preview_timeout = kwargs.pop('preview_timeout', None)
+            self.hide_preview_button = kwargs.pop('hide_preview_button', False)
+            super(HeavyPreviewPageDownWidget, self).__init__(*args, **kwargs)
+
+        def render(self, name, value, attrs=None, renderer=None):
+            if value is None:
+                value = ''
+            final_attrs = self.build_attrs(attrs, {'name': name})
+            if 'class' not in final_attrs:
+                final_attrs['class'] = ''
+            final_attrs['class'] += ' wmd-input'
+            return get_template(self.template).render(self.get_template_context(final_attrs, value))
+
+        def get_template_context(self, attrs, value):
+            return {
+                'attrs': flatatt(attrs),
+                'body': conditional_escape(force_text(value)),
+                'id': attrs['id'],
+                'show_preview': self.show_preview,
+                'preview_url': self.preview_url,
+                'preview_timeout': self.preview_timeout,
+                'extra_classes': 'dmmd-no-button' if self.hide_preview_button else None,
+            }
+
+        class Media:
+            css = {'all': ['dmmd-preview.css']}
+            js = ['dmmd-preview.js']
+
+
+    class HeavyPreviewAdminPageDownWidget(AdminPagedownWidget, HeavyPreviewPageDownWidget):
+        class Media:
+            css = {'all': [
+                'pygment-github.css',
+                'table.css',
+                'ranks.css',
+            ]}