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	 356eca7e33
			
		
	
	
		356eca7e33
		
	
	
	
	
		
			
			Implement undo/redo functionality in the Spreadsheet application for the "extend" function, the drag-and-drop function, and when copying and pasting.
		
			
				
	
	
		
			56 lines
		
	
	
	
		
			1.7 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			56 lines
		
	
	
	
		
			1.7 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| /*
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|  * Copyright (c) 2020-2022, the SerenityOS developers.
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|  *
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|  * SPDX-License-Identifier: BSD-2-Clause
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|  */
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| 
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| #pragma once
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| 
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| #include "Spreadsheet.h"
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| #include <LibGUI/Model.h>
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| 
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| namespace Spreadsheet {
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| 
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| class SheetModel final : public GUI::Model {
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| public:
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|     static NonnullRefPtr<SheetModel> create(Sheet& sheet) { return adopt_ref(*new SheetModel(sheet)); }
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|     virtual ~SheetModel() override = default;
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| 
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|     virtual int row_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override { return m_sheet->row_count(); }
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|     virtual int column_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override { return m_sheet->column_count(); }
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|     virtual String column_name(int) const override;
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|     virtual GUI::Variant data(const GUI::ModelIndex&, GUI::ModelRole) const override;
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|     virtual RefPtr<Core::MimeData> mime_data(const GUI::ModelSelection&) const override;
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|     virtual bool is_editable(const GUI::ModelIndex&) const override;
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|     virtual void set_data(const GUI::ModelIndex&, const GUI::Variant&) override;
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|     virtual bool is_column_sortable(int) const override { return false; }
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|     virtual StringView drag_data_type() const override { return "text/x-spreadsheet-data"; }
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|     Sheet& sheet() { return *m_sheet; }
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| 
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|     void update();
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| 
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|     Function<void(Cell&, String&)> on_cell_data_change;
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|     Function<void(Vector<CellChange>)> on_cells_data_change;
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| 
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| private:
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|     explicit SheetModel(Sheet& sheet)
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|         : m_sheet(sheet)
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|     {
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|     }
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| 
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|     NonnullRefPtr<Sheet> m_sheet;
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| };
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| 
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| class CellsUndoCommand : public GUI::Command {
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| public:
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|     CellsUndoCommand(Cell&, String const&);
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|     CellsUndoCommand(Vector<CellChange>);
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| 
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|     virtual void undo() override;
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|     virtual void redo() override;
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| 
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| private:
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|     Vector<CellChange> m_cell_changes;
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| };
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| 
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| }
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