hook prettify_json

qt/aqt/addons.py

@@ -26,6 +26,7 @@ import aqt
 import aqt.forms
 from anki.httpclient import HttpClient
 from anki.lang import _, ngettext
+from aqt import gui_hooks
 from aqt.qt import *
 from aqt.utils import (
     TR,
@@ -1284,15 +1285,11 @@ class ConfigEditor(QDialog):
             self.form.scrollArea.setVisible(False)
 
     def updateText(self, conf):
-        self.form.editor.setPlainText(
-            json.dumps(
-                conf,
-                ensure_ascii=False,
-                sort_keys=True,
-                indent=4,
-                separators=(",", ": "),
-            )
+        text = json.dumps(
+            conf, ensure_ascii=False, sort_keys=True, indent=4, separators=(",", ": "),
         )
+        text = gui_hooks.addon_config_editor_will_display_json(text)
+        self.form.editor.setPlainText(text)
 
     def onClose(self):
         saveGeom(self, "addonconf")

qt/aqt/gui_hooks.py

@@ -75,6 +75,37 @@ class _AddCardsWillShowHistoryMenuHook:
 add_cards_will_show_history_menu = _AddCardsWillShowHistoryMenuHook()
 
 
+class _AddonConfigEditorWillDisplayJsonFilter:
+    """Allows changing the text of the json configuration before actually
+        displaying it to the user. For example, you can replace "\n" by
+        some actual new line. Then you can replace the new lines by "\n"
+        while reading the file and let the user uses real new line in
+        string instead of its encoding."""
+
+    _hooks: List[Callable[[str], str]] = []
+
+    def append(self, cb: Callable[[str], str]) -> None:
+        """(text: str)"""
+        self._hooks.append(cb)
+
+    def remove(self, cb: Callable[[str], str]) -> None:
+        if cb in self._hooks:
+            self._hooks.remove(cb)
+
+    def __call__(self, text: str) -> str:
+        for filter in self._hooks:
+            try:
+                text = filter(text)
+            except:
+                # if the hook fails, remove it
+                self._hooks.remove(filter)
+                raise
+        return text
+
+
+addon_config_editor_will_display_json = _AddonConfigEditorWillDisplayJsonFilter()
+
+
 class _AvPlayerDidBeginPlayingHook:
     _hooks: List[Callable[["aqt.sound.Player", "anki.sound.AVTag"], None]] = []
 

qt/tools/genhooks_gui.py

@@ -452,6 +452,18 @@ def emptyNewCard():
         args=["player: aqt.sound.Player", "tag: anki.sound.AVTag"],
     ),
     Hook(name="av_player_did_end_playing", args=["player: aqt.sound.Player"]),
+    # Addon
+    ###################
+    Hook(
+        name="addon_config_editor_will_display_json",
+        args=["text: str"],
+        return_type="str",
+        doc="""Allows changing the text of the json configuration before actually
+        displaying it to the user. For example, you can replace "\\\\n" by
+        some actual new line. Then you can replace the new lines by "\\\\n"
+        while reading the file and let the user uses real new line in
+        string instead of its encoding.""",
+    ),
     # Other
     ###################
     Hook(