Add overview_will_render_content hook

qt/aqt/gui_hooks.py

@@ -781,6 +781,55 @@ class _OverviewDidRefreshHook:
 overview_did_refresh = _OverviewDidRefreshHook()
 
 
+class _OverviewWillRenderContentHook:
+    """Used to modify HTML content sections in the overview body
+
+        'content' contains the sections of HTML content the overview body
+        will be updated with.
+
+        When modifying the content of a particular section, please make sure your
+        changes only perform the minimum required edits to make your add-on work.
+        You should avoid overwriting or interfering with existing data as much
+        as possible, instead opting to append your own changes, e.g.:
+
+            def on_overview_will_render_content(overview, content):
+                content.table += "
+<div>my html</div>"
+        """
+
+    _hooks: List[
+        Callable[["aqt.overview.Overview", "aqt.overview.OverviewContent"], None]
+    ] = []
+
+    def append(
+        self,
+        cb: Callable[["aqt.overview.Overview", "aqt.overview.OverviewContent"], None],
+    ) -> None:
+        """(overview: aqt.overview.Overview, content: aqt.overview.OverviewContent)"""
+        self._hooks.append(cb)
+
+    def remove(
+        self,
+        cb: Callable[["aqt.overview.Overview", "aqt.overview.OverviewContent"], None],
+    ) -> None:
+        if cb in self._hooks:
+            self._hooks.remove(cb)
+
+    def __call__(
+        self, overview: aqt.overview.Overview, content: aqt.overview.OverviewContent
+    ) -> None:
+        for hook in self._hooks:
+            try:
+                hook(overview, content)
+            except:
+                # if the hook fails, remove it
+                self._hooks.remove(hook)
+                raise
+
+
+overview_will_render_content = _OverviewWillRenderContentHook()
+
+
 class _ProfileDidOpenHook:
     _hooks: List[Callable[[], None]] = []
 

qt/aqt/overview.py

@@ -4,6 +4,8 @@
 
 from __future__ import annotations
 
+from dataclasses import dataclass
+
 import aqt
 from anki.lang import _
 from aqt import gui_hooks
@@ -17,6 +19,14 @@ class OverviewBottomBar:
         self.overview = overview
 
 
+@dataclass
+class OverviewContent:
+    deck: str
+    shareLink: str
+    desc: str
+    table: str
+
+
 class Overview:
     "Deck overview."
 
@@ -141,14 +151,15 @@ class Overview:
             shareLink = '<a class=smallLink href="review">Reviews and Updates</a>'
         else:
             shareLink = ""
+        content = OverviewContent(
+            deck=deck["name"],
+            shareLink=shareLink,
+            desc=self._desc(deck),
+            table=self._table(),
+        )
+        gui_hooks.overview_will_render_content(self, content)
         self.web.stdHtml(
-            self._body
-            % dict(
-                deck=deck["name"],
-                shareLink=shareLink,
-                desc=self._desc(deck),
-                table=self._table(),
-            ),
+            self._body % content.__dict__,
             css=["overview.css"],
             js=["jquery.js", "overview.js"],
             context=self,

qt/tools/genhooks_gui.py

@@ -25,6 +25,26 @@ hooks = [
         doc="""Allow to update the overview window. E.g. add the deck name in the
         title.""",
     ),
+    Hook(
+        name="overview_will_render_content",
+        args=[
+            "overview: aqt.overview.Overview",
+            "content: aqt.overview.OverviewContent",
+        ],
+        doc="""Used to modify HTML content sections in the overview body
+
+        'content' contains the sections of HTML content the overview body
+        will be updated with.
+
+        When modifying the content of a particular section, please make sure your
+        changes only perform the minimum required edits to make your add-on work.
+        You should avoid overwriting or interfering with existing data as much
+        as possible, instead opting to append your own changes, e.g.:
+
+            def on_overview_will_render_content(overview, content):
+                content.table += "\n<div>my html</div>"
+        """,
+    ),
     Hook(
         name="deck_browser_did_render",
         args=["deck_browser: aqt.deckbrowser.DeckBrowser"],