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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Badge.h>
#include <AK/JsonObject.h>
#include <LibGUI/Layout.h>
#include <LibGUI/Widget.h>
REGISTER_ABSTRACT_CORE_OBJECT(GUI, Layout)
namespace GUI {
Layout::Layout(Margins initial_margins, int spacing)
: m_margins(initial_margins)
, m_spacing(spacing)
{
REGISTER_INT_PROPERTY("spacing", spacing, set_spacing);
REGISTER_MARGINS_PROPERTY("margins", margins, set_margins);
register_property("entries",
[this] {
JsonArray entries_array;
for (auto& entry : m_entries) {
JsonObject entry_object;
if (entry.type == Entry::Type::Widget) {
entry_object.set("type", "Widget");
entry_object.set("widget", (FlatPtr)entry.widget.ptr());
} else if (entry.type == Entry::Type::Spacer) {
entry_object.set("type", "Spacer");
} else {
VERIFY_NOT_REACHED();
}
entries_array.must_append(move(entry_object));
}
return entries_array;
});
}
Layout::~Layout() = default;
void Layout::notify_adopted(Badge<Widget>, Widget& widget)
{
if (m_owner == &widget)
return;
m_owner = widget;
m_owner->for_each_child_widget([&](Widget& child) {
add_widget(child);
return IterationDecision::Continue;
});
}
void Layout::notify_disowned(Badge<Widget>, Widget& widget)
{
VERIFY(m_owner == &widget);
m_owner.clear();
m_entries.clear();
}
ErrorOr<void> Layout::try_add_entry(Entry&& entry)
{
TRY(m_entries.try_append(move(entry)));
if (m_owner)
m_owner->notify_layout_changed({});
return {};
}
void Layout::add_entry(Entry&& entry)
{
MUST(try_add_entry(move(entry)));
}
ErrorOr<void> Layout::try_add_spacer()
{
TRY(try_add_entry(Entry { .type = Entry::Type::Spacer }));
return {};
}
void Layout::add_spacer()
{
MUST(try_add_spacer());
}
void Layout::add_layout(OwnPtr<Layout>&& layout)
{
Entry entry;
entry.type = Entry::Type::Layout;
entry.layout = move(layout);
add_entry(move(entry));
}
ErrorOr<void> Layout::try_add_widget(Widget& widget)
{
TRY(try_add_entry(Entry {
.type = Entry::Type::Widget,
.widget = widget,
}));
return {};
}
void Layout::add_widget(Widget& widget)
{
MUST(try_add_widget(widget));
}
ErrorOr<void> Layout::try_insert_widget_before(Widget& widget, Widget& before_widget)
{
Entry entry;
entry.type = Entry::Type::Widget;
entry.widget = widget;
TRY(m_entries.try_insert_before_matching(move(entry), [&](auto& existing_entry) {
return existing_entry.type == Entry::Type::Widget && existing_entry.widget.ptr() == &before_widget;
}));
if (m_owner)
m_owner->notify_layout_changed({});
return {};
}
void Layout::insert_widget_before(Widget& widget, Widget& before_widget)
{
MUST(try_insert_widget_before(widget, before_widget));
}
void Layout::remove_widget(Widget& widget)
{
m_entries.remove_first_matching([&](auto& entry) {
return entry.widget == &widget;
});
if (m_owner)
m_owner->notify_layout_changed({});
}
void Layout::set_spacing(int spacing)
{
if (m_spacing == spacing)
return;
m_spacing = spacing;
if (m_owner)
m_owner->notify_layout_changed({});
}
void Layout::set_margins(Margins const& margins)
{
if (m_margins == margins)
return;
m_margins = margins;
if (m_owner)
m_owner->notify_layout_changed({});
}
}
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