# gtk_styles.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 Styles(AstNode):
    def emit_xml(self, xml: XmlEmitter):
        xml.start_tag("style")
        for child in self.children:
            child.emit_xml(xml)
        xml.end_tag()


class StyleClass(AstNode):
    def emit_xml(self, xml):
        xml.put_self_closing("class", name=self.tokens["name"])


styles = Group(
    Styles,
    Statement(
        Keyword("style"),
        Delimited(
            Group(
                StyleClass,
                UseQuoted("name")
            ),
            Comma(),
        ),
    )
)


@completer(
    applies_in=[ast.ObjectContent],
    matches=new_statement_patterns,
)
def style_completer(ast_node, match_variables):
    yield Completion("style", CompletionItemKind.Keyword, snippet="style \"$0\";")