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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Mustafa Quraish <mustafa@serenityos.org>
* Copyright (c) 2022, the SerenityOS developers.
* Copyright (c) 2022, Timothy Slater <tslater2006@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include "HexDocument.h"
#include "SearchResultsModel.h"
#include <AK/ByteBuffer.h>
#include <AK/Function.h>
#include <AK/HashMap.h>
#include <AK/NonnullOwnPtrVector.h>
#include <AK/NonnullRefPtrVector.h>
#include <AK/StdLibExtras.h>
#include <LibCore/Timer.h>
#include <LibGUI/AbstractScrollableWidget.h>
#include <LibGUI/UndoStack.h>
#include <LibGfx/Font/Font.h>
#include <LibGfx/TextAlignment.h>
class HexEditor : public GUI::AbstractScrollableWidget {
C_OBJECT(HexEditor)
public:
enum EditMode {
Hex,
Text
};
virtual ~HexEditor() override = default;
size_t buffer_size() const { return m_document->size(); }
ErrorOr<void> open_new_file(size_t size);
void open_file(NonnullOwnPtr<Core::File> file);
ErrorOr<void> fill_selection(u8 fill_byte);
Optional<u8> get_byte(size_t position);
ErrorOr<void> save_as(NonnullOwnPtr<Core::File>);
ErrorOr<void> save();
bool undo();
bool redo();
GUI::UndoStack& undo_stack();
void select_all();
bool has_selection() const { return m_selection_start < m_selection_end && m_document->size() > 0; }
size_t selection_size();
size_t selection_start_offset() const { return m_selection_start; }
bool copy_selected_text_to_clipboard();
bool copy_selected_hex_to_clipboard();
bool copy_selected_hex_to_clipboard_as_c_code();
size_t bytes_per_row() const { return m_bytes_per_row; }
void set_bytes_per_row(size_t);
void set_position(size_t position);
void set_selection(size_t position, size_t length);
void highlight(size_t start, size_t end);
Optional<size_t> find(ByteBuffer& needle, size_t start = 0);
Optional<size_t> find_and_highlight(ByteBuffer& needle, size_t start = 0);
Vector<Match> find_all(ByteBuffer& needle, size_t start = 0);
Vector<Match> find_all_strings(size_t min_length = 4);
Function<void(size_t, EditMode, size_t, size_t)> on_status_change; // position, edit mode, selection start, selection end
Function<void(bool is_document_dirty)> on_change;
protected:
HexEditor();
virtual void paint_event(GUI::PaintEvent&) override;
virtual void mousedown_event(GUI::MouseEvent&) override;
virtual void mouseup_event(GUI::MouseEvent&) override;
virtual void mousemove_event(GUI::MouseEvent&) override;
virtual void keydown_event(GUI::KeyEvent&) override;
private:
size_t m_line_spacing { 4 };
size_t m_content_length { 0 };
size_t m_bytes_per_row { 16 };
bool m_in_drag_select { false };
size_t m_selection_start { 0 };
size_t m_selection_end { 0 };
size_t m_position { 0 };
bool m_cursor_at_low_nibble { false };
EditMode m_edit_mode { Hex };
RefPtr<Core::Timer> m_blink_timer;
bool m_cursor_blink_active { false };
NonnullOwnPtr<HexDocument> m_document;
GUI::UndoStack m_undo_stack;
static constexpr int m_address_bar_width = 90;
static constexpr int m_padding = 5;
void scroll_position_into_view(size_t position);
size_t total_rows() const { return ceil_div(m_content_length, m_bytes_per_row); }
size_t line_height() const { return font().glyph_height() + m_line_spacing; }
size_t character_width() const { return font().glyph_width('W'); }
size_t cell_width() const { return character_width() * 3; }
size_t offset_margin_width() const { return 80; }
ErrorOr<void> hex_mode_keydown_event(GUI::KeyEvent&);
ErrorOr<void> text_mode_keydown_event(GUI::KeyEvent&);
void set_content_length(size_t); // I might make this public if I add fetching data on demand.
void update_status();
void did_change();
ErrorOr<void> did_complete_action(size_t position, u8 old_value, u8 new_value);
ErrorOr<void> did_complete_action(size_t position, ByteBuffer&& old_values, ByteBuffer&& new_values);
void reset_cursor_blink_state();
};
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