v14.1: post notifications on focused virtual element, not EmacsView

Root cause of typing echo + cursor movement failure:
VoiceOver tracks the focused element (EmacsAccessibilityBuffer, AXTextArea).
Notifications from EmacsView (AXGroup) were ignored because VoiceOver
doesn't monitor non-focused elements for text changes.

Fix: ns_draw_window_cursor now calls [view accessibilityFocusedUIElement]
to find the right EmacsAccessibilityBuffer, and posts ValueChanged +
SelectedTextChanged on IT instead of on the view.

Also: postAccessibilityUpdatesForWindow now uses [self accessibilityStringForRange:]
instead of [view accessibilityStringForRange:] for typing echo text.

patches/0001-ns-implement-AXBoundsForRange-for-macOS-Zoom-cursor-.patch

@@ -2,12 +2,9 @@ From: Martin Sukany <martin@sukany.cz>
 Date: Wed, 26 Feb 2026 00:00:00 +0100
 Subject: [PATCH] ns: add macOS Zoom cursor tracking and VoiceOver accessibility
 
-Dual accessibility support:
+Dual accessibility: UAZoomChangeFocus for Zoom + virtual element tree for
-1. UAZoomChangeFocus + accessibilityBoundsForRange on EmacsView for Zoom
+VoiceOver.  Notifications target the focused virtual element, not EmacsView.
-2. Virtual element tree (EmacsAccessibilityBuffer) for VoiceOver
+Full hierarchy plumbing (accessibilityWindow, accessibilityParent, etc.).
-3. Typing echo from ns_draw_window_cursor on EmacsView
-4. Full hierarchy plumbing: accessibilityWindow, accessibilityTopLevelUIElement,
-   accessibilityParent, isAccessibilityFocused, FocusedUIElementChanged
 MRC compatible.
 ---
 --- a/src/nsterm.h	2026-02-26 08:46:18.118172281 +0100
@@ -74,7 +71,7 @@ MRC compatible.
  
  
 --- a/src/nsterm.m	2026-02-26 08:46:18.124172384 +0100
-+++ b/src/nsterm.m	2026-02-26 10:19:39.112307036 +0100
++++ b/src/nsterm.m	2026-02-26 10:46:54.607568839 +0100
 @@ -1104,6 +1104,11 @@
  
    unblock_input ();
@@ -87,7 +84,7 @@ MRC compatible.
  }
  
  static void
-@@ -3232,6 +3237,75 @@
+@@ -3232,6 +3237,82 @@
    /* Prevent the cursor from being drawn outside the text area.  */
    r = NSIntersectionRect (r, ns_row_rect (w, glyph_row, TEXT_AREA));
  
@@ -103,13 +100,20 @@ MRC compatible.
 +	/* Store cursor rect for accessibilityBoundsForRange: queries.  */
 +	view->lastAccessibilityCursorRect = r;
 +
++	/* Find the focused virtual element — VoiceOver tracks IT,
++	   not the EmacsView (AXGroup).  Notifications must come from
++	   the element VoiceOver is monitoring.  */
++	id axTarget = [view accessibilityFocusedUIElement];
++	if (!axTarget)
++	  axTarget = view;
++
 +	struct buffer *curbuf
 +	  = XBUFFER (XWINDOW (f->selected_window)->contents);
 +
 +	if (curbuf && BUF_MODIFF (curbuf) != view->lastAccessibilityModiff)
 +	  {
 +	    /* Buffer content changed — typing echo.  Post ValueChanged
-+	       with rich userInfo on the VIEW so VoiceOver can speak.
++	       with rich userInfo on the FOCUSED ELEMENT.
 +	       kAXTextStateChangeTypeEdit = 1, kAXTextEditTypeTyping = 3.  */
 +	    view->lastAccessibilityModiff = BUF_MODIFF (curbuf);
 +
@@ -133,12 +137,12 @@ MRC compatible.
 +	      @"AXTextChangeValues": @[change]
 +	    };
 +	    NSAccessibilityPostNotificationWithUserInfo (
-+	      view, NSAccessibilityValueChangedNotification, userInfo);
++	      axTarget, NSAccessibilityValueChangedNotification, userInfo);
 +	  }
 +
-+	/* Always notify cursor movement.  */
++	/* Always notify cursor movement on the focused element.  */
 +	NSAccessibilityPostNotification (
-+	  view, NSAccessibilitySelectedTextChangedNotification);
++	  axTarget, NSAccessibilitySelectedTextChangedNotification);
 +
 +	/* Tell macOS Zoom where the cursor is.  UAZoomChangeFocus()
 +	   expects top-left origin (CG coordinate space).  */
@@ -163,7 +167,7 @@ MRC compatible.
    ns_focus (f, NULL, 0);
  
    NSGraphicsContext *ctx = [NSGraphicsContext currentContext];
-@@ -6849,6 +6923,650 @@
+@@ -6849,6 +6930,646 @@
  
  /* ==========================================================================
  
@@ -772,16 +776,12 @@ MRC compatible.
 +      ptrdiff_t pt = BUF_PT (b);
 +      if (pt > BUF_BEGV (b))
 +        {
-+          EmacsView *view = self.emacsView;
-+          if (view)
-+            {
 +          NSRange charRange = NSMakeRange (
 +            (NSUInteger)(pt - BUF_BEGV (b) - 1), 1);
-+              changedText = [view accessibilityStringForRange:charRange];
++          changedText = [self accessibilityStringForRange:charRange];
 +          if (!changedText)
 +            changedText = @"";
 +        }
-+        }
 +
 +      NSDictionary *change = @{
 +        @"AXTextEditType": @3,
@@ -814,7 +814,7 @@ MRC compatible.
      EmacsView implementation
  
     ========================================================================== */
-@@ -6889,6 +7607,7 @@
+@@ -6889,6 +7610,7 @@
    [layer release];
  #endif
  
@@ -822,7 +822,7 @@ MRC compatible.
    [[self menu] release];
    [super dealloc];
  }
-@@ -8237,6 +8956,18 @@
+@@ -8237,6 +8959,18 @@
    XSETFRAME (event.frame_or_window, emacsframe);
    kbd_buffer_store_event (&event);
    ns_send_appdefined (-1);  // Kick main loop
@@ -841,7 +841,7 @@ MRC compatible.
  }
  
  
-@@ -9474,6 +10205,391 @@
+@@ -9474,6 +10208,391 @@
    return fs_state;
  }
  
@@ -1233,7 +1233,7 @@ MRC compatible.
  @end  /* EmacsView */
  
  
-@@ -9941,6 +11057,14 @@
+@@ -9941,6 +11060,14 @@
  
    return [super accessibilityAttributeValue:attribute];
  }