ladybird/Userland/Libraries/LibGUI/Property.h
Andreas Kling 405187993a LibGUI+LibCore: Move GML property system from LibCore to LibGUI
Since Core::Object properties are really only used by GML now that the
Inspector is long gone, there's no need for these to pollute
Core::Object.

This patch adds a new GUI::Object class to hold properties, and makes
it the new base class of GUI::Window, GUI::Widget and GUI::Layout.
The "instantiate an object by name" mechanism that GML uses is also
hoisted into GUI::Object as well.
2023-08-06 18:09:25 +02:00

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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Function.h>
#include <AK/JsonValue.h>
namespace GUI {
class Property {
AK_MAKE_NONCOPYABLE(Property);
public:
Property(DeprecatedString name, Function<JsonValue()> getter, Function<bool(JsonValue const&)> setter = nullptr);
~Property() = default;
bool set(JsonValue const& value)
{
if (!m_setter)
return false;
return m_setter(value);
}
JsonValue get() const
{
if (!m_getter)
return {};
return m_getter();
}
DeprecatedString const& name() const { return m_name; }
bool is_readonly() const { return !m_setter; }
private:
DeprecatedString m_name;
Function<JsonValue()> m_getter;
Function<bool(JsonValue const&)> m_setter;
};
}