CodeInput.hh

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#pragma once

#include "DataCell.hh"
#include <gtkmm/box.h>
#include <gtkmm/textview.h>
#include <gtkmm/separator.h>

namespace cadabra {


    class CodeInput : public Gtk::VBox {
        public:

            CodeInput(DTree::iterator, Glib::RefPtr<Gtk::TextBuffer>, double scale, int font_step);


            CodeInput(DTree::iterator, const std::string&, double scale, int font_step);
            

            class exp_input_tv : public Gtk::TextView {
                public:
                    exp_input_tv(DTree::iterator, Glib::RefPtr<Gtk::TextBuffer>, double scale);
                    virtual bool on_key_press_event(GdkEventKey*) override;
                    virtual bool on_draw(const Cairo::RefPtr<Cairo::Context>&) override;
                    virtual bool on_focus_in_event(GdkEventFocus *) override;
                    virtual void on_show() override;

                    void         shift_enter_pressed();
                    
                    sigc::signal1<bool, DTree::iterator>                   content_execute;
                    sigc::signal2<bool, std::string, DTree::iterator>      content_changed;
                    sigc::signal3<bool, std::string, int, DTree::iterator> content_insert;
                    sigc::signal3<bool, int, int, DTree::iterator>         content_erase;
                    sigc::signal1<bool, DTree::iterator>                   cell_got_focus;

                    friend CodeInput;

                private:
                    double scale_;
                    DTree::iterator datacell;
            };

            
            void set_font_size(int num);


            bool handle_button_press(GdkEventButton *);
            

            void handle_insert(const Gtk::TextIter& pos, const Glib::ustring& text, int bytes);


            void handle_erase(const Gtk::TextIter& start, const Gtk::TextIter& end);


            void update_buffer(); 


            void slice_cell(std::string& before, std::string& after);


            Glib::RefPtr<Gtk::TextBuffer> buffer;

            exp_input_tv                  edit;

        private:
            void init(int font_step);
    };

}