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#pragma once
#include "OwnPtr.h"
#include "Position.h"
#include "UndoStack.h"
#include <string>
class Document;
class Line;
class Editor {
public:
Editor();
~Editor();
void set_document(OwnPtr<Document>&&);
void redraw();
int exec();
enum Mode {
Idle,
EditingCommand,
EditingDocument,
};
void set_mode(Mode);
Mode mode() const { return m_mode; }
bool is_editing_document() const { return m_mode == EditingDocument; }
bool is_editing_command() const { return m_mode == EditingCommand; }
bool is_idle() const { return m_mode == Idle; }
void set_status_text(const std::string&);
void set_status_text(const char* fmt, ...);
bool insert_text_at_cursor(const std::string&);
bool remove_text_at_cursor(const std::string&);
void run(OwnPtr<Operation>&&);
private:
Line& current_line();
const Line& current_line() const;
void move_left();
void move_down();
void move_up();
void move_right();
void move_to_end_of_line();
void move_to_start_of_line();
void erase_left();
void erase_right();
size_t max_line() const;
size_t max_column() const;
void update_scroll_position_if_needed();
void draw_status_bar();
void draw_cursor();
void handle_document_key_press(int ch);
void handle_command_key_press(int ch);
void insert_at_cursor(int ch);
void exec_command();
void coalesce_current_line();
void write_to_file();
OwnPtr<Document> m_document;
UndoStack m_undo_stack;
// Document relative
Position m_scroll_position;
Position m_cursor;
std::string m_command;
std::string m_status_text;
bool m_should_quit { false };
size_t m_ruler_width { 0 };
Mode m_mode { Idle };
};
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