//  twfilt.c
//
//  These functions dynamically generate the People and Event filtering menus.
//
//  by John D. de Boer

#include "twist.h"
#include "twindow.h"


extern int        ITEMS;
extern FilterItem ***Items;
extern MenuRef    PeopleMenu,EventMenu;

int PITEMS,EITEMS;  //  number of items in each menu


//  "People" and "Event" menu choices

  void InsertFilterMenus(void) {
int i; FilterItem *F; InsertMenu(PeopleMenu,0); InsertMenu(EventMenu,0);
for (i=0;i<ITEMS;i++) { F=(*(Items))[i]; if (F->menu) InsertMenu(F->menu,-1); } }

  void AdjustFilterMenus(void) {
int i; FilterItem *F; SubItem **H;
for (i=0;i<ITEMS;i++) {
  F=(*Items)[i];
  if (F->menu) AdjustFilterMenu(F);
  else if (F->item && *(F->item)) {
    H= (*(F->item))[0];
    if (H && *H) CheckMenuItem(F->people ? PeopleMenu : EventMenu,F->place,(*H)->show); } }
}

  bool FilterCommand(window *W, UInt32 C) {
int i; FilterItem *F; if (!W) return 0; C-='Item';
for (i=0;i<ITEMS;i++) {
  F=(*(Items))[i];
  if (F->menu) {
    if (range(C,F->num)) { DoFilterSubMenu(F,C + 1,-1); SetUpOrder(); Redisplay(); return 1; }
    C-=F->num;
    if (C==0) { DoFilterSubMenu(F,F->num + 2,-1); SetUpOrder(); Redisplay(); return 1; }
    if (C==1) { DoFilterSubMenu(F,F->num + 3,-1); SetUpOrder(); Redisplay(); return 1; }
    C-=2; }
  else {
    if (C==0) { DoFilterItem(F,-1); SetUpOrder(); Redisplay(); return 1; }
    C--; }
  }

if (!range(C,4)) return 0;
for (i=0;i<ITEMS;i++) {
  F=(*Items)[i]; if (F->people != (C<2)) continue;
  DoFilterItem(F,(C==0) || (C==2)); }

SetUpOrder(); Redisplay(); return 1; }