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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/OwnPtr.h>
#include <AK/Vector.h>
#include <AK/WeakPtr.h>
#include <LibCore/Object.h>
#include <LibGUI/Forward.h>
#include <LibGUI/Margins.h>
namespace GUI {
class Layout : public Core::Object {
C_OBJECT_ABSTRACT(Layout);
public:
virtual ~Layout();
void add_widget(Widget&);
void insert_widget_before(Widget& widget, Widget& before_widget);
void add_layout(OwnPtr<Layout>&&);
void add_spacer();
void remove_widget(Widget&);
virtual void run(Widget&) = 0;
void notify_adopted(Badge<Widget>, Widget&);
void notify_disowned(Badge<Widget>, Widget&);
Margins margins() const { return m_margins; }
void set_margins(const Margins&);
int spacing() const { return m_spacing; }
void set_spacing(int);
protected:
Layout();
struct Entry {
enum class Type {
Invalid = 0,
Widget,
Layout,
Spacer,
};
Type type { Type::Invalid };
WeakPtr<Widget> widget;
OwnPtr<Layout> layout;
};
void add_entry(Entry&&);
WeakPtr<Widget> m_owner;
Vector<Entry> m_entries;
Margins m_margins;
int m_spacing { 3 };
};
}
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