Fix for thunderbird.

src/cthulhu/scripts/apps/Thunderbird/meson.build

@@ -1,10 +1,11 @@
 thunderbird_python_sources = files([
   '__init__.py',
   'script.py',
+  'script_utilities.py',
   'spellcheck.py',
 ])
 
 python3.install_sources(
   thunderbird_python_sources,
   subdir: 'cthulhu/scripts/apps/Thunderbird'
-)
+)

src/cthulhu/scripts/apps/Thunderbird/script.py

@@ -43,6 +43,7 @@ from cthulhu.ax_object import AXObject
 from cthulhu.ax_utilities import AXUtilities
 
 from .spellcheck import SpellCheck
+from .script_utilities import Utilities
 
 _settingsManager = settings_manager.getManager()
 
@@ -97,6 +98,11 @@ class Script(Gecko.Script):
 
         return SpellCheck(self)
 
+    def getUtilities(self):
+        """Returns the utilities for this script."""
+
+        return Utilities(self)
+
     def getAppPreferencesGUI(self):
         """Return a GtkGrid containing the application unique configuration
         GUI items for the current application."""
@@ -356,6 +362,8 @@ class Script(Gecko.Script):
         [obj, offset] = self.utilities.findFirstCaretContext(documentFrame, 0)
         self.utilities.setCaretPosition(obj, offset)
         self.updateBraille(obj)
+        if obj and self._navSuspended and self.utilities.inDocumentContent(obj):
+            self._setNavigationSuspended(False, "message content loaded")
 
         if _settingsManager.getSetting('pageSummaryOnLoad'):
             tokens = ["THUNDERBIRD: Getting page summary for obj", obj]

src/cthulhu/scripts/apps/Thunderbird/script_utilities.py

@@ -0,0 +1,97 @@
+#!/usr/bin/env python3
+#
+# Copyright (c) 2024 Stormux
+# Copyright (c) 2010-2012 The Orca Team
+# Copyright (c) 2012 Igalia, S.L.
+# Copyright (c) 2005-2010 Sun Microsystems Inc.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., Franklin Street, Fifth Floor,
+# Boston MA  02110-1301 USA.
+#
+# Fork of Orca Screen Reader (GNOME)
+# Original source: https://gitlab.gnome.org/GNOME/orca
+
+"""Thunderbird-specific utility overrides."""
+
+__id__ = "$Id$"
+__version__   = "$Revision$"
+__date__      = "$Date$"
+__copyright__ = "Copyright (c) 2010 Joanmarie Diggs."
+__license__   = "LGPL"
+
+import cthulhu.debug as debug
+from cthulhu.ax_object import AXObject
+from cthulhu.ax_utilities import AXUtilities
+from cthulhu.scripts.toolkits.Gecko.script_utilities import Utilities as GeckoUtilities
+
+
+class Utilities(GeckoUtilities):
+
+    def __init__(self, script):
+        super().__init__(script)
+
+    def getDocumentForObject(self, obj):
+        document = super().getDocumentForObject(obj)
+        if document:
+            return document
+
+        documentFrame = self._messageDocumentFrameFor(obj)
+        if not documentFrame:
+            return None
+
+        tokens = ["THUNDERBIRD: Treating document frame as document:", documentFrame]
+        debug.printTokens(debug.LEVEL_INFO, tokens, True)
+        return documentFrame
+
+    def getTopLevelDocumentForObject(self, obj):
+        document = super().getTopLevelDocumentForObject(obj)
+        if document:
+            return document
+
+        documentFrame = self._messageDocumentFrameFor(obj)
+        if not documentFrame:
+            return None
+
+        tokens = ["THUNDERBIRD: Treating document frame as top-level document:", documentFrame]
+        debug.printTokens(debug.LEVEL_INFO, tokens, True)
+        return documentFrame
+
+    def _messageDocumentFrameFor(self, obj):
+        if not obj:
+            return None
+
+        if AXUtilities.is_document_frame(obj) and self._isMessageDocumentFrame(obj):
+            return obj
+
+        documentFrame = AXObject.find_ancestor(obj, AXUtilities.is_document_frame)
+        if documentFrame and self._isMessageDocumentFrame(documentFrame):
+            return documentFrame
+
+        return None
+
+    def _isMessageDocumentFrame(self, obj):
+        if not obj or not AXUtilities.is_document_frame(obj):
+            return False
+
+        uri = self.documentFrameURI(obj)
+        if uri:
+            for prefix in ("about:message", "mailbox:", "imap:", "imaps:",
+                           "news:", "nntp:", "pop:", "pop3:",
+                           "smtp:", "smtps:"):
+                if uri.startswith(prefix):
+                    return True
+
+        name = (AXObject.get_name(obj) or "").lower()
+        return "message" in name