todo.txt integration

assets/overlay.js

@@ -16,6 +16,7 @@
     var placeholder = null; // marks where to restore it
     var prevFocus = null;
     var onKeydown = null;
+    var onCloseCb = null;   // opts.onClose of the currently hosted node
 
     function build() {
         overlay = document.createElement('div');
@@ -56,6 +57,7 @@
         opts = opts || {};
 
         prevFocus = document.activeElement;
+        onCloseCb = typeof opts.onClose === 'function' ? opts.onClose : null;
         hosted = node;
         placeholder = document.createComment('overlay-slot');
         node.parentNode.insertBefore(placeholder, node);
@@ -96,6 +98,12 @@
         if (toRestore && toRestore.focus) {
             try { toRestore.focus(); } catch (e) {}
         }
+
+        // Fires after the node is back in its original spot, so the callback
+        // sees the final DOM (e.g. the todo rail flushing an autosave).
+        var cb = onCloseCb;
+        onCloseCb = null;
+        if (cb) cb();
     }
 
     // Belt-and-suspenders bfcache guard: force the overlay closed (restoring