Made rich text editors configurable

This commit makes it possible to swap out the hallo editor with a custom one

wagtail/wagtailadmin/rich_text.py

@@ -2,7 +2,9 @@
 
 import json
 
+from django.conf import settings
 from django.forms import widgets
+from django.utils.module_loading import import_string
 
 from wagtail.utils.widgets import WidgetWithScript
 from wagtail.wagtailadmin.edit_handlers import RichTextFieldPanel
@@ -28,3 +30,17 @@ def value_from_datadict(self, data, files, name):
         if original_value is None:
             return None
         return DbWhitelister.clean(original_value)
+
+
+DEFAULT_RICH_TEXT_EDITORS = {
+    'default': {
+        'WIDGET': 'wagtail.wagtailadmin.rich_text.HalloRichTextArea'
+    }
+}
+
+
+def get_rich_text_editor(name='default'):
+    editor_settings = getattr(settings, 'WAGTAILADMIN_RICH_TEXT_EDITORS', DEFAULT_RICH_TEXT_EDITORS)
+
+    editor = editor_settings[name]
+    return import_string(editor['WIDGET'])()

wagtail/wagtailcore/blocks/field_block.py

@@ -303,8 +303,9 @@ class Meta:
 
 class RichTextBlock(FieldBlock):
 
-    def __init__(self, required=True, help_text=None, **kwargs):
+    def __init__(self, required=True, help_text=None, editor='default', **kwargs):
         self.field_options = {'required': required, 'help_text': help_text}
+        self.editor = editor
         super(RichTextBlock, self).__init__(**kwargs)
 
     def get_default(self):
@@ -325,16 +326,16 @@ def get_prep_value(self, value):
 
     @cached_property
     def field(self):
-        from wagtail.wagtailadmin.rich_text import HalloRichTextArea
-        return forms.CharField(widget=HalloRichTextArea, **self.field_options)
+        from wagtail.wagtailadmin.rich_text import get_rich_text_editor
+        return forms.CharField(widget=get_rich_text_editor(self.editor), **self.field_options)
 
     def value_for_form(self, value):
-        # HalloRichTextArea takes the source-HTML string as input (and takes care
+        # Rich text editors take the source-HTML string as input (and takes care
         # of expanding it for the purposes of the editor)
         return value.source
 
     def value_from_form(self, value):
-        # HalloRichTextArea returns a source-HTML string; concert to a RichText object
+        # Rich text editors return a source-HTML string; convert to a RichText object
         return RichText(value)
 
     def get_searchable_content(self, value):

wagtail/wagtailcore/fields.py

@@ -10,9 +10,13 @@
 
 
 class RichTextField(models.TextField):
+    def __init__(self, *args, **kwargs):
+        self.editor = kwargs.pop('editor', 'default')
+        super(RichTextField, self).__init__(*args, **kwargs)
+
     def formfield(self, **kwargs):
-        from wagtail.wagtailadmin.rich_text import HalloRichTextArea
-        defaults = {'widget': HalloRichTextArea}
+        from wagtail.wagtailadmin.rich_text import get_rich_text_editor
+        defaults = {'widget': get_rich_text_editor(self.editor)}
         defaults.update(kwargs)
         return super(RichTextField, self).formfield(**defaults)