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#ifndef DEF_UI_VT_H
#define DEF_UI_VT_H
#include <vfs/node.h>
#include <dev/display.h>
#include <dev/keyboard.h>
#define KBD_BUFFER_SIZE 256
struct vt_char {
int ch;
uint8_t fgcolor, bgcolor;
};
class vt : public node {
private:
display *output;
int w, h, csr_l, csr_c, save_csr_l, save_csr_c;
vt_char *text;
void put_at(int l, int c, int ch);
bool cursor_visible;
int kbd_buffer_filled;
char kbd_buffer[KBD_BUFFER_SIZE];
thread *kbd_waiter;
public:
uint8_t fgcolor, bgcolor;
vt(node* parent, int w, int h);
virtual ~vt() {}
virtual vt* as_vt() { return this; }
// internal use
void put(int c);
void clear();
void scroll(int l);
void writeStr(char* str) { write(0, strlen(str), str); }
void writeHex(uint32_t v);
void writeDec(int v);
// shortcuts
vt& operator<< (char* str) { writeStr(str); return *this; }
vt& operator<< (uint32_t t) { writeHex(t); return *this; }
vt& operator<< (int i) { writeDec(i); return *this; }
void outputTo(display *display);
void keyboardInput(keypress kp, keyboard* from);
virtual int write(size_t offset, size_t len, char* buffer);
virtual int read(size_t offset, size_t len, char* buffer); // get keyboard input
virtual size_t get_size();
virtual int link(node* to, int mode);
};
extern vt *ke_vt, *home_vt;
#define NL ke_vt->writeStr("\n");
#define TAB ke_vt->writeStr("\t");
#define WHERE { ke_vt->writeStr("(ke:"); \
ke_vt->writeStr(__FILE__); \
ke_vt->writeStr(":"); \
ke_vt->writeDec(__LINE__); \
ke_vt->writeStr(") "); }
#endif
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