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d3558b6137
When adding a widget to a parent, you don't always want to append it to the set of existing children, but instead insert it before one of them. This patch makes that possible by adding CObject::insert_child_before() which also produces a ChildAdded event with an additional before_child pointer. This pointer is then used by GWidget to make sure that any layout present maintains the correct order. (Without doing that, newly added children would still be appended into the layout order, despite having a different widget sibling order.)
54 lines
1.1 KiB
C++
54 lines
1.1 KiB
C++
#pragma once
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#include <AK/Badge.h>
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#include <AK/OwnPtr.h>
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#include <AK/Vector.h>
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#include <AK/WeakPtr.h>
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#include <LibGUI/GMargins.h>
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class GWidget;
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class GLayout {
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public:
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GLayout();
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virtual ~GLayout();
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void add_widget(GWidget&);
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void insert_widget_before(GWidget& widget, GWidget& before_widget);
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void add_layout(OwnPtr<GLayout>&&);
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void add_spacer();
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void remove_widget(GWidget&);
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virtual void run(GWidget&) = 0;
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void notify_adopted(Badge<GWidget>, GWidget&);
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void notify_disowned(Badge<GWidget>, GWidget&);
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GMargins margins() const { return m_margins; }
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void set_margins(const GMargins&);
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int spacing() const { return m_spacing; }
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void set_spacing(int);
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protected:
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struct Entry {
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enum class Type {
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Invalid = 0,
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Widget,
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Layout,
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Spacer,
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};
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Type type { Type::Invalid };
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WeakPtr<GWidget> widget;
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OwnPtr<GLayout> layout;
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};
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void add_entry(Entry&&);
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WeakPtr<GWidget> m_owner;
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Vector<Entry> m_entries;
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GMargins m_margins;
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int m_spacing { 3 };
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};
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