Add GtkFileFilter properties

gtkblueprinttool/extensions/__init__.py

@@ -5,7 +5,8 @@ from .gtk_a11y import a11y
 from .gtk_menu import menu
 from .gtk_styles import styles
 from .gtk_layout import layout
+from .gtk_file_filter import mime_types, patterns, suffixes
 
 OBJECT_HOOKS = [menu]
 
-OBJECT_CONTENT_HOOKS = [a11y, styles, layout]
+OBJECT_CONTENT_HOOKS = [a11y, styles, layout, mime_types, patterns, suffixes]

gtkblueprinttool/extensions/gtk_file_filter.py

@@ -0,0 +1,81 @@
+# gtk_file_filter.py
+#
+# Copyright 2021 James Westman <james@jwestman.net>
+#
+# This file 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 3 of the
+# License, or (at your option) any later version.
+#
+# This file 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 program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# SPDX-License-Identifier: LGPL-3.0-or-later
+
+
+from .. import ast
+from ..ast_utils import AstNode
+from ..completions_utils import *
+from ..lsp_utils import Completion, CompletionItemKind
+from ..parse_tree import *
+from ..parser_utils import *
+from ..xml_emitter import XmlEmitter
+
+
+class Filters(AstNode):
+    def emit_xml(self, xml: XmlEmitter):
+        xml.start_tag(self.tokens["tag_name"])
+        for child in self.children:
+            child.emit_xml(xml)
+        xml.end_tag()
+
+
+class FilterString(AstNode):
+    def emit_xml(self, xml):
+        xml.start_tag(self.tokens["tag_name"])
+        xml.put_text(self.tokens["name"])
+        xml.end_tag()
+
+
+def create_node(tag_name: str, singular: str):
+    return Group(
+        Filters,
+        Statement(
+            Keyword(tag_name),
+            UseLiteral("tag_name", tag_name),
+            Op(":"),
+            Delimited(
+                Group(
+                    FilterString,
+                    Sequence(
+                        UseQuoted("name"),
+                        UseLiteral("tag_name", singular),
+                    )
+                ),
+                Comma(),
+            ),
+        )
+    )
+
+
+mime_types = create_node("mime-types", "mime-type")
+patterns = create_node("patterns", "pattern")
+suffixes = create_node("suffixes", "suffix")
+
+
+@completer(
+    applies_in=[ast.ObjectContent],
+    matches=new_statement_patterns,
+)
+def file_filter_completer(ast_node, match_variables):
+    file_filter = ast_node.root.gir.get_type("FileFilter", "Gtk")
+    if ast_node.gir_class and ast_node.gir_class.assignable_to(file_filter):
+        yield Completion("mime-types", CompletionItemKind.Snippet, snippet="mime-types \"$0\";")
+        yield Completion("patterns", CompletionItemKind.Snippet, snippet="patterns \"$0\";")
+        yield Completion("suffixes", CompletionItemKind.Snippet, snippet="suffixes \"$0\";")
+