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1408aa1295
We always display the tree indent and the icon, so we shouldn't allow the tree column to shrink beyond that size.
84 lines
2.7 KiB
C++
84 lines
2.7 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/HashMap.h>
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#include <LibGUI/AbstractTableView.h>
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namespace GUI {
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class TreeView : public AbstractTableView {
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C_OBJECT(TreeView)
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public:
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virtual ~TreeView() override;
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virtual void scroll_into_view(const ModelIndex&, bool scroll_horizontally, bool scroll_vertically) override;
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virtual int item_count() const override;
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virtual void toggle_index(const ModelIndex&) override;
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void expand_tree(const ModelIndex& root = {});
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void collapse_tree(const ModelIndex& root = {});
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void expand_all_parents_of(const ModelIndex&);
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Function<void(const ModelIndex&, const bool)> on_toggle;
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void set_should_fill_selected_rows(bool fill) { m_should_fill_selected_rows = fill; }
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bool should_fill_selected_rows() const { return m_should_fill_selected_rows; }
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virtual int vertical_padding() const override { return m_vertical_padding; }
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virtual Gfx::IntRect content_rect(ModelIndex const&) const override;
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virtual Gfx::IntRect paint_invalidation_rect(ModelIndex const& index) const override { return content_rect(index); }
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virtual int minimum_column_width(int column) override;
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protected:
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TreeView();
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virtual void paint_event(PaintEvent&) override;
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virtual void doubleclick_event(MouseEvent&) override;
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virtual void keydown_event(KeyEvent&) override;
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virtual void did_update_selection() override;
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virtual void model_did_update(unsigned flags) override;
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virtual void move_cursor(CursorMovement, SelectionUpdate) override;
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private:
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virtual ModelIndex index_at_event_position(const Gfx::IntPoint&, bool& is_toggle) const override;
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int row_height() const { return 16; }
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int max_item_width() const { return frame_inner_rect().width(); }
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int indent_width_in_pixels() const { return 16; }
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int icon_size() const { return 16; }
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int icon_spacing() const { return 2; }
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int toggle_size() const { return 9; }
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int text_padding() const { return 2; }
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int tree_column_x_offset() const;
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virtual void update_column_sizes() override;
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virtual void auto_resize_column(int column) override;
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template<typename Callback>
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void traverse_in_paint_order(Callback) const;
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struct MetadataForIndex;
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MetadataForIndex& ensure_metadata_for_index(const ModelIndex&) const;
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void set_open_state_of_all_in_subtree(const ModelIndex& root, bool open);
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mutable HashMap<void*, NonnullOwnPtr<MetadataForIndex>> m_view_metadata;
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RefPtr<Gfx::Bitmap> m_expand_bitmap;
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RefPtr<Gfx::Bitmap> m_collapse_bitmap;
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bool m_should_fill_selected_rows { false };
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int m_vertical_padding { 6 };
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};
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}
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