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# gtkbuilder_child.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 functools import cached_property
from .common import *
from .gobject_object import Object
from .response_id import ExtResponse, decompile_response_type
ALLOWED_PARENTS: T.List[T.Tuple[str, str]] = [
("Gtk", "Buildable"),
("Gio", "ListStore"),
]
class ChildInternal(AstNode):
grammar = ["internal-child", UseIdent("internal_child")]
@property
def internal_child(self) -> str:
return self.tokens["internal_child"]
class ChildType(AstNode):
grammar = UseIdent("child_type").expected("a child type")
@property
def child_type(self) -> str:
return self.tokens["child_type"]
class ChildExtension(AstNode):
grammar = ExtResponse
@property
def child(self) -> ExtResponse:
return self.children[0]
@docs()
def ref_docs(self):
return get_docs_section("Syntax ChildExtension")
class ChildAnnotation(AstNode):
grammar = ["[", AnyOf(ChildInternal, ChildExtension, ChildType), "]"]
@property
def child(self) -> T.Union[ChildInternal, ChildExtension, ChildType]:
return self.children[0]
class Child(AstNode):
grammar = [
Optional(ChildAnnotation),
Object,
]
@property
def annotation(self) -> T.Optional[ChildAnnotation]:
annotations = self.children[ChildAnnotation]
return annotations[0] if len(annotations) else None
@property
def object(self) -> Object:
return self.children[Object][0]
@validate()
def parent_can_have_child(self):
if gir_class := self.parent.gir_class:
for namespace, name in ALLOWED_PARENTS:
parent_type = self.root.gir.get_type(name, namespace)
if gir_class.assignable_to(parent_type):
break
else:
hints = [
"only Gio.ListStore or Gtk.Buildable implementors can have children"
]
if hasattr(gir_class, "properties") and "child" in gir_class.properties:
hints.append(
"did you mean to assign this object to the 'child' property?"
)
raise CompileError(
f"{gir_class.full_name} doesn't have children",
hints=hints,
)
@cached_property
def response_id(self) -> T.Optional[ExtResponse]:
"""Get action widget's response ID.
If child is not action widget, returns `None`.
"""
if (
self.annotation is not None
and isinstance(self.annotation.child, ChildExtension)
and isinstance(self.annotation.child.child, ExtResponse)
):
return self.annotation.child.child
else:
return None
@validate()
def internal_child_unique(self):
if self.annotation is not None:
if isinstance(self.annotation.child, ChildInternal):
internal_child = self.annotation.child.internal_child
self.validate_unique_in_parent(
f"Duplicate internal child '{internal_child}'",
lambda x: (
x.annotation
and isinstance(x.annotation.child, ChildInternal)
and x.annotation.child.internal_child == internal_child
),
)
@decompiler("child", element=True)
def decompile_child(ctx, gir, element):
if type := element["type"]:
if type == "action":
if decompiled := decompile_response_type(ctx.parent_node, element):
ctx.print(decompiled)
return
ctx.print(f"[{type}]")
elif internal_child := element["internal-child"]:
ctx.print(f"[internal-child {internal_child}]")
return gir
|
