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		8cac2e89a9
		
	
	
	
	
		
			
			A model is necessary for displaying a list of them in the UI. We might as well make that their home.
		
			
				
	
	
		
			132 lines
		
	
	
	
		
			4.5 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			132 lines
		
	
	
	
		
			4.5 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| /*
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|  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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|  * Copyright (c) 2021, Mustafa Quraish <mustafa@serenityos.org>
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|  * Copyright (c) 2022, the SerenityOS developers.
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|  * Copyright (c) 2022, Timothy Slater <tslater2006@gmail.com>
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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 "HexDocument.h"
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| #include "SearchResultsModel.h"
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| #include "Selection.h"
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| #include <AK/ByteBuffer.h>
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| #include <AK/Function.h>
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| #include <AK/HashMap.h>
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| #include <AK/StdLibExtras.h>
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| #include <LibCore/Timer.h>
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| #include <LibGUI/AbstractScrollableWidget.h>
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| #include <LibGUI/UndoStack.h>
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| #include <LibGfx/Font/Font.h>
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| #include <LibGfx/TextAlignment.h>
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| 
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| namespace HexEditor {
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| 
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| class HexEditor : public GUI::AbstractScrollableWidget {
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|     C_OBJECT(HexEditor)
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| public:
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|     enum EditMode {
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|         Hex,
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|         Text
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|     };
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| 
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|     virtual ~HexEditor() override = default;
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| 
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|     size_t buffer_size() const { return m_document->size(); }
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|     ErrorOr<void> open_new_file(size_t size);
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|     void open_file(NonnullOwnPtr<Core::File> file);
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|     ErrorOr<void> fill_selection(u8 fill_byte);
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|     Optional<u8> get_byte(size_t position);
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|     ByteBuffer get_selected_bytes();
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|     ErrorOr<void> save_as(NonnullOwnPtr<Core::File>);
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|     ErrorOr<void> save();
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| 
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|     bool undo();
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|     bool redo();
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|     GUI::UndoStack& undo_stack();
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| 
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|     void select_all();
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|     Selection const& selection() const { return m_selection; }
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|     bool has_selection() const { return !m_selection.is_empty() && m_document->size() > 0; }
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|     size_t selection_start_offset() const { return m_selection.start; }
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|     bool copy_selected_text_to_clipboard();
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|     bool copy_selected_hex_to_clipboard();
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|     bool copy_selected_hex_to_clipboard_as_c_code();
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| 
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|     size_t bytes_per_row() const { return m_bytes_per_row; }
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|     void set_bytes_per_row(size_t);
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| 
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|     void set_position(size_t position);
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|     void set_selection(size_t position, size_t length);
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|     void highlight(size_t start, size_t end);
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|     Optional<size_t> find(ByteBuffer& needle, size_t start = 0);
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|     Optional<size_t> find_and_highlight(ByteBuffer& needle, size_t start = 0);
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|     Vector<Match> find_all(ByteBuffer& needle, size_t start = 0);
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|     Vector<Match> find_all_strings(size_t min_length = 4);
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|     Function<void(size_t position, EditMode, Selection)> on_status_change;
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|     Function<void(bool is_document_dirty)> on_change;
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| 
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|     void show_create_annotation_dialog();
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|     void show_edit_annotation_dialog(Annotation&);
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|     void show_delete_annotation_dialog(Annotation&);
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| 
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|     HexDocument& document() { return *m_document; }
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| 
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| protected:
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|     HexEditor();
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| 
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|     virtual void paint_event(GUI::PaintEvent&) override;
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|     virtual void mousedown_event(GUI::MouseEvent&) override;
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|     virtual void mouseup_event(GUI::MouseEvent&) override;
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|     virtual void mousemove_event(GUI::MouseEvent&) override;
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|     virtual void keydown_event(GUI::KeyEvent&) override;
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|     virtual void context_menu_event(GUI::ContextMenuEvent&) override;
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| 
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| private:
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|     size_t m_line_spacing { 4 };
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|     size_t m_content_length { 0 };
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|     size_t m_bytes_per_row { 16 };
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|     bool m_in_drag_select { false };
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|     Selection m_selection;
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|     size_t m_position { 0 };
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|     bool m_cursor_at_low_nibble { false };
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|     EditMode m_edit_mode { Hex };
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|     NonnullOwnPtr<HexDocument> m_document;
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|     GUI::UndoStack m_undo_stack;
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|     Optional<Annotation&> m_hovered_annotation;
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| 
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|     RefPtr<GUI::Menu> m_context_menu;
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|     RefPtr<GUI::Action> m_add_annotation_action;
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|     RefPtr<GUI::Action> m_edit_annotation_action;
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|     RefPtr<GUI::Action> m_delete_annotation_action;
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| 
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|     static constexpr int m_address_bar_width = 90;
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|     static constexpr int m_padding = 5;
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| 
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|     void scroll_position_into_view(size_t position);
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| 
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|     size_t total_rows() const { return ceil_div(m_content_length, m_bytes_per_row); }
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|     size_t line_height() const { return font().pixel_size_rounded_up() + m_line_spacing; }
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|     size_t character_width() const { return font().glyph_width('W'); }
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|     size_t cell_width() const { return character_width() * 3; }
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|     size_t offset_margin_width() const { return 80; }
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| 
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|     struct OffsetData {
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|         size_t offset;
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|         EditMode panel;
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|     };
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|     Optional<OffsetData> offset_at(Gfx::IntPoint position) const;
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| 
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|     ErrorOr<void> hex_mode_keydown_event(GUI::KeyEvent&);
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|     ErrorOr<void> text_mode_keydown_event(GUI::KeyEvent&);
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| 
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|     void set_content_length(size_t); // I might make this public if I add fetching data on demand.
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|     void update_status();
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|     void did_change();
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|     ErrorOr<void> did_complete_action(size_t position, u8 old_value, u8 new_value);
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|     ErrorOr<void> did_complete_action(size_t position, ByteBuffer&& old_values, ByteBuffer&& new_values);
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| };
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| 
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| }
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