#pragma implementation "Controller.h"
#include <Controller.h>
#include <keyboard.h>

char Controller::insert_mode = 0;
Controller *Controller::focus = 0;

void Controller::setfocus(Controller *p) {
  //cerr << "setfocus(" << this << ',' << p << ")";
  //for (Controller *t = focus;;t = t->next_focus) {
  //  cerr << " -> " << t;
  //  if (!t) break;
  //}
  //cerr << endl;
  Controller *t;
  for (t = focus; t && t != this; t = t->next_focus)
	;
  if (t) while (focus && focus != this) {
    focus->losefocus();
    focus = focus->next_focus;
  }
  if (p) {
    p->unlink();
    p->next_focus = focus;
    focus = p;
    p->getfocus();
  }
  else {
    losefocus();
    unlink();
    if (focus)
      focus->getfocus();
  }
}

void Controller::unlink() {
  for (Controller **p = &focus; *p; p = &(*p)->next_focus)
    if (*p == this) {
      *p = next_focus;
      next_focus = this;
      break;
    }
}

void Controller::key(int k) {
  switch (k) {
  case KEY_IC:
    insert_mode = ~insert_mode;
    return;
  }
  if (next_focus)
    next_focus->key(k);
}

void Controller::cmd(int) { }

int Controller::run() {
  int ky = 0;
  while (next_focus != this && dokey(ky = getkey()) == 0);
  return ky;
}

Controller::Controller() { next_focus = this; }
Controller::~Controller() { unlink(); }

int Controller::dokey(int k) {
  if (focus) focus->key(k);
  return (focus == 0);
}