lang: Also allow Gtk.ListHeader in factory template

blueprintcompiler/language/gtk_list_item_factory.py

@@ -11,7 +11,13 @@ from .types import TypeName
 
 
 class ExtListItemFactory(AstNode):
-    grammar = [UseExact("id", "template"), Optional(TypeName), ObjectContent]
+    grammar = [
+        UseExact("id", "template"),
+        Mark("typename_start"),
+        Optional(TypeName),
+        Mark("typename_end"),
+        ObjectContent,
+    ]
 
     @property
     def id(self) -> str:
@@ -57,16 +63,17 @@ class ExtListItemFactory(AstNode):
     def unique_in_parent(self):
         self.validate_unique_in_parent("Duplicate template block")
 
-    @validate()
+    @validate("typename_start", "typename_end")
     def type_is_list_item(self):
         if self.type_name is not None:
             if self.type_name.glib_type_name not in (
                 "GtkListItem",
+                "GtkListHeader",
                 "GtkColumnViewRow",
                 "GtkColumnViewCell",
             ):
                 raise CompileError(
-                    f"Only Gtk.ListItem, Gtk.ColumnViewRow, or Gtk.ColumnViewCell is allowed as a type here"
+                    f"Only Gtk.ListItem, Gtk.ListHeader, Gtk.ColumnViewRow, or Gtk.ColumnViewCell is allowed as a type here"
                 )
 
     @validate("template")

tests/sample_errors/list_factory.err

@@ -1 +1 @@
-4,3,17,Only Gtk.ListItem, Gtk.ColumnViewRow, or Gtk.ColumnViewCell is allowed as a type here
+4,11,6,Only Gtk.ListItem, Gtk.ListHeader, Gtk.ColumnViewRow, or Gtk.ColumnViewCell is allowed as a type here

tests/samples/gtkcolumnview.blp

@@ -1,6 +1,10 @@
 using Gtk 4.0;
 
 ColumnView {
+  header-factory: BuilderListItemFactory {
+    template ListHeader {}
+  };
+
   row-factory: BuilderListItemFactory {
     template ColumnViewRow {}
   };

tests/samples/gtkcolumnview.ui

@@ -7,6 +7,14 @@ corresponding .blp file and regenerate this file with blueprint-compiler.
 <interface>
   <requires lib="gtk" version="4.0"/>
   <object class="GtkColumnView">
+    <property name="header-factory">
+      <object class="GtkBuilderListItemFactory">
+        <property name="bytes"><![CDATA[<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+  <template class="GtkListHeader"></template>
+</interface>]]></property>
+      </object>
+    </property>
     <property name="row-factory">
       <object class="GtkBuilderListItemFactory">
         <property name="bytes"><![CDATA[<?xml version="1.0" encoding="UTF-8"?>