From fae89c87df7c82e1eee524f25207c1e2a589aa2f Mon Sep 17 00:00:00 2001
From: Matthias Kestenholz <mk@feinheit.ch>
Date: Tue, 17 Dec 2024 11:59:36 +0100
Subject: [PATCH] Redefine the way presets are specified

---
 README.rst                     | 13 ++---
 django_prose_editor/widgets.py | 97 ++++++++--------------------------
 pyproject.toml                 |  1 +
 3 files changed, 30 insertions(+), 81 deletions(-)

diff --git a/README.rst b/README.rst
index 8708cff..225d6c9 100644
--- a/README.rst
+++ b/README.rst
@@ -94,15 +94,16 @@ Customization
 **NOTE!** The previous way of customizing the editor is still supported, but
 it's not recommended (and documented) anymore.
 
-The editor can be customized using presets; the way to do this is by adding a list of presets to your Django settings:
+The editor can be customized using presets; the way to do this is by adding
+additional assets to load:
 
 .. code-block:: python
 
-    DJANGO_PROSE_EDITOR_PRESETS = {
-        "announcements": {
-            "script": "prose-editors/announcements.js",
-        },
-    }
+    from js_asset import JS
+
+    DJANGO_PROSE_EDITOR_ASSETS = [
+        JS("prose-editors/announcements.js", {"defer": True}),
+    ]
 
 The preset can be selected when instantiating the field:
 
diff --git a/django_prose_editor/widgets.py b/django_prose_editor/widgets.py
index 34c05c2..d11c2a7 100644
--- a/django_prose_editor/widgets.py
+++ b/django_prose_editor/widgets.py
@@ -1,58 +1,19 @@
 import json
-from functools import cached_property
 
 from django import forms
 from django.conf import settings
-from django.forms.utils import flatatt
 from django.templatetags.static import static
-from django.utils.html import format_html, json_script, mark_safe
 from django.utils.translation import gettext_lazy
-
-
-class JS:
-    def __init__(self, src, attrs):
-        self.src = src
-        self.attrs = attrs
-
-    def __html__(self):
-        return format_html(
-            '<script src="{}"{}></script>',
-            self.src
-            if self.src.startswith(("http://", "https://", "/"))
-            else static(self.src),
-            mark_safe(flatatt(self.attrs)),
-        )
-
-    def __eq__(self, other):
-        return (
-            isinstance(other, JS)
-            and self.src == other.src
-            and self.attrs == other.attrs
-        )
-
-    def __hash__(self):
-        return hash(self.__str__())
-
-
-class JSON:
-    def __init__(self, id, data):
-        self.id = id
-        self.data = data
-
-    def __html__(self):
-        return json_script(self.data, self.id)
-
-    def __eq__(self, other):
-        return (
-            isinstance(other, JSON) and self.id == other.id and self.data == other.data
-        )
-
-    def __hash__(self):
-        return hash(self.__str__())
+from js_asset import JS, JSON
 
 
 class ProseEditorWidget(forms.Textarea):
-    @cached_property
+    def __init__(self, *args, **kwargs):
+        self.config = kwargs.pop("config", {})
+        self.preset = kwargs.pop("preset", "default")
+        super().__init__(*args, **kwargs)
+
+    @property
     def base_media(self):
         return forms.Media(
             css={
@@ -62,12 +23,8 @@ def base_media(self):
                 ]
             },
             js=[
-                JS(
-                    "django_prose_editor/editor.js",
-                    {"defer": True},
-                ),
+                JS("django_prose_editor/editor.js", {"defer": True}),
                 JSON(
-                    "django-prose-editor-settings",
                     {
                         "stylesheets": [
                             static("django_prose_editor/material-icons.css"),
@@ -80,35 +37,20 @@ def base_media(self):
                             "cancel": gettext_lazy("Cancel"),
                         },
                     },
+                    "django-prose-editor-settings",
                 ),
+                JS("django_prose_editor/init.js", {"defer": True}),
             ],
         )
 
-    def __init__(self, *args, **kwargs):
-        self.config = kwargs.pop("config", {})
-        self.preset = kwargs.pop("preset", "default")
-        super().__init__(*args, **kwargs)
-
     @property
     def media(self):
-        return self.base_media + forms.Media(
-            js=[
-                JS(
-                    preset["script"],
-                    {"defer": True},
-                )
-                for key, preset in self.get_presets().items()
-            ],
+        return (
+            (self.base_media + forms.Media(js=assets))
+            if (assets := getattr(settings, "DJANGO_PROSE_EDITOR_ASSETS", ()))
+            else self.base_media
         )
 
-    def get_presets(self):
-        presets = {
-            "default": {
-                "script": "django_prose_editor/init.js",
-            },
-        }
-        return presets | getattr(settings, "DJANGO_PROSE_EDITOR_PRESETS", {})
-
     def get_config(self):
         return self.config or {
             "types": None,
@@ -130,7 +72,12 @@ def get_context(self, name, value, attrs):
 
 class AdminProseEditorWidget(ProseEditorWidget):
     @property
-    def media(self):
-        return super().media + forms.Media(
-            css={"all": ["django_prose_editor/overrides.css"]}
+    def base_media(self):
+        return super().base_media + forms.Media(
+            css={
+                "all": [
+                    "django_prose_editor/editor.css",  # For the ordering
+                    "django_prose_editor/overrides.css",
+                ]
+            }
         )
diff --git a/pyproject.toml b/pyproject.toml
index 2abd369..4d29ebd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -36,6 +36,7 @@ dynamic = [
 ]
 dependencies = [
   "django>=4.2",
+  "django-js-asset>=3",
 ]
 
 optional-dependencies.sanitize = [