74 lines
1.9 KiB
C++
74 lines
1.9 KiB
C++
// Aseprite UI Library
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// Copyright (C) 2020-2022 Igara Studio S.A.
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// Copyright (C) 2001-2017 David Capello
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//
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// This file is released under the terms of the MIT license.
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// Read LICENSE.txt for more information.
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#ifndef UI_LISTBOX_H_INCLUDED
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#define UI_LISTBOX_H_INCLUDED
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#pragma once
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#include "obs/signal.h"
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#include "ui/widget.h"
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#include <vector>
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namespace ui {
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class ListItem;
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class ListBox : public Widget {
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public:
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ListBox();
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bool isMultiselect() const { return m_multiselect; }
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void setMultiselect(const bool multiselect);
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Widget* getSelectedChild();
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int getSelectedIndex();
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void selectChild(Widget* item, Message* msg = nullptr);
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void selectIndex(int index, Message* msg = nullptr);
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int getItemsCount() const;
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void makeChildVisible(Widget* item);
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void centerScroll();
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void sortItems();
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void sortItems(bool (*cmp)(Widget* a, Widget* b));
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obs::signal<void()> Change;
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obs::signal<void()> DoubleClickItem;
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protected:
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virtual bool onProcessMessage(Message* msg) override;
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virtual void onPaint(PaintEvent& ev) override;
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virtual void onResize(ResizeEvent& ev) override;
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virtual void onSizeHint(SizeHintEvent& ev) override;
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virtual void onChange();
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virtual void onDoubleClickItem();
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int advanceIndexThroughVisibleItems(
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int startIndex, int delta, const bool loop);
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// True if this listbox accepts selecting multiple items at the
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// same time.
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bool m_multiselect;
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// Range of items selected when we click down/up. Used to specify
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// the range of selected items in a multiselect operation.
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int m_firstSelectedIndex;
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int m_lastSelectedIndex;
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// Initial state (isSelected()) of each list item when the
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// selection operation started. It's used to switch the state of
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// items in case that the user is Ctrl+clicking items several
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// items at the same time.
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std::vector<bool> m_states;
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};
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} // namespace ui
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#endif
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