WIP: Add AdwMessageDialog support

Support AdwMessageDialog's custom XML.

blueprintcompiler/language/adw_message_dialog.py

@@ -0,0 +1,108 @@
+# adw_message_dialog.py
+#
+# Copyright 2022 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 .gobject_object import ObjectContent, validate_parent_type
+from .attributes import BaseAttribute
+from .common import *
+
+
+class AppearanceClass(AstNode):
+    grammar = AnyOf(Keyword("destructive"), Keyword("suggested"))
+
+    @property
+    def name(self):
+        if self.tokens["destructive"]:
+            return "destructive"
+        else:
+            return "suggested"
+
+    @validate()
+    def unique_in_parent(self):
+        self.validate_unique_in_parent("Only one of 'destructive' or 'suggested' is allowed")
+
+
+class Response(BaseAttribute):
+    tag_name = "response"
+    attr_name = "id"
+
+    value_type = gir.StringType()
+
+    grammar = [
+        UseIdent("name"),
+        ":",
+        VALUE_HOOKS,
+        ZeroOrMore(AnyOf(
+            Keyword("disabled"),
+            AppearanceClass,
+        )),
+    ]
+
+    @validate("name")
+    def unique_in_parent(self):
+        self.validate_unique_in_parent(
+            f"Duplicate response ID '{self.tokens['name']}'",
+            lambda other: other.tokens["name"] == self.tokens["name"],
+        )
+
+    def extra_attributes(self):
+        attrs = {}
+
+        if len(self.children[AppearanceClass]) == 1:
+            attrs["appearance"] = self.children[AppearanceClass][0].name
+
+        if self.tokens["disabled"]:
+            attrs["enabled"] = "false"
+
+        return attrs
+
+    def emit_xml(self, xml):
+        xml.put_self_closing("response", name=self.tokens["name"])
+
+
+class Responses(AstNode):
+    grammar = [
+        Keyword("responses"),
+        "{",
+        Delimited(Response, ","),
+        "}",
+    ]
+
+    @validate("responses")
+    def container_is_adw_message_dialog(self):
+        validate_parent_type(self, "Adw", "MessageDialog", "responses")
+
+    @validate("responses")
+    def unique_in_parent(self):
+        self.validate_unique_in_parent("Duplicate responses block")
+
+    def emit_xml(self, xml: XmlEmitter):
+        xml.start_tag("responses")
+        for child in self.children:
+            child.emit_xml(xml)
+        xml.end_tag()
+
+@completer(
+    applies_in=[ObjectContent],
+    applies_in_subclass=("Gtk", "Widget"),
+    matches=new_statement_patterns,
+)
+def style_completer(ast_node, match_variables):
+    yield Completion("styles", CompletionItemKind.Keyword, snippet="styles [\"$0\"]")
+