#include <stdio.h>
#include <windows.h>
#include <commctrl.h>
#include <SWI-Prolog.h>

#include "resource.h"
#include "defs.h"

HWND HDlv;

HWND
DlvCreate()
{
	LVCOLUMN lvc;

	HDlv = LvCreate((HMENU)IDC_DATALISTVIEW, LVS_NOCOLUMNHEADER);

	lvc.mask = LVCF_WIDTH|LVCF_TEXT|LVCF_SUBITEM;
	lvc.iSubItem = DLVSIKEY;
	lvc.pszText = TEXT("Key");

	lvc.cx = Dpi(42);
	ListView_InsertColumn(HDlv, DLVSIKEY, &lvc);

	lvc.iSubItem = DLVSIVALUE;
	lvc.pszText = TEXT("Value");
	lvc.cx = 500;
	ListView_InsertColumn(HDlv, DLVSIVALUE, &lvc);

	return HDlv;
}

/* Show episode data. */
void
DlvShowEpisode(int iEpisode)
{
	int i, iItem;
	LVFINDINFO lvfi;
	LVITEM lviKey, lviValue;
	term_t t;
	qid_t q;
	extern HWND HElv;

	ListView_DeleteAllItems(HDlv);

	lviKey.mask = LVIF_TEXT;
	lviValue.mask = LVIF_TEXT;

	t = PL_new_term_refs(3);
	if (!Plp(t,"I",iEpisode)) return;
	q = PL_open_query(NULL, PL_Q_NORMAL,
	    PL_predicate("episode_datum", 3, "episode_data"), t);

	for (i = 0; PL_next_solution(q); i++) {
		char *szKey;
		char *szValue;
		TCHAR *tszKey, *tszValue;

		if (!Plg(t+1,"ss",&szKey,&szValue)) continue;

		tszKey = TszFromSz(szKey, CP_UTF8);
		if (!tszKey) continue;
		tszValue = TszFromSz(szValue, CP_UTF8);
		if (!tszValue) goto c;

		lviKey.mask = LVIF_TEXT;
		lviKey.iItem = i;
		lviKey.iSubItem = 0;
		lviKey.pszText = tszKey;
		ListView_InsertItem(HDlv, &lviKey);

		lviValue.iItem = i;
		lviValue.iSubItem = 1;
		lviValue.pszText = tszValue;
		ListView_SetItem(HDlv, &lviValue);

		free(tszValue);
	c:	free(tszKey);
	}

	PL_cut_query(q);
	UpdateLayout();

	lvfi.flags = LVFI_PARAM;
	lvfi.lParam = iEpisode;
	iItem = ListView_FindItem(HElv, -1, &lvfi);
	if (iItem != -1)
		ListView_EnsureVisible(HElv, iItem, TRUE);
}