/*

Miranda NG: the free IM client for Microsoft* Windows*

Copyright (c) 2012-14 Miranda NG project (http://miranda-ng.org),
Copyright (c) 2000-12 Miranda IM project,
all portions of this codebase are copyrighted to the people
listed in contributors.txt.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

#include "..\..\core\commonheaders.h"

static WINDOWLISTENTRY *windowList = NULL;
static int windowListCount = 0;
static int nextWindowListId = 1;

static INT_PTR AllocWindowList(WPARAM, LPARAM)
{
	return nextWindowListId++;
}

static INT_PTR AddToWindowList(WPARAM, LPARAM lParam)
{
	windowList = (WINDOWLISTENTRY*)mir_realloc(windowList, sizeof(WINDOWLISTENTRY)*(windowListCount+1));
	windowList[windowListCount++] = *(WINDOWLISTENTRY*)lParam;
	return 0;
}

static INT_PTR RemoveFromWindowList(WPARAM wParam, LPARAM lParam)
{
	int i;
	for (i=0;i<windowListCount;i++)
		if (windowList[i].hwnd == (HWND)lParam && windowList[i].hList == (HANDLE)wParam) {
			MoveMemory(&windowList[i], &windowList[i+1], sizeof(WINDOWLISTENTRY)*(windowListCount-i-1));
			windowListCount--;
			return 0;
		}
	return 1;
}

static INT_PTR FindInWindowList(WPARAM wParam, LPARAM lParam)
{
	int i;
	for (i=0;i<windowListCount;i++)
		if (windowList[i].hContact == (HANDLE)lParam && windowList[i].hList == (HANDLE)wParam)
			return (INT_PTR)windowList[i].hwnd;
	return (INT_PTR)(HWND)NULL;
}

static INT_PTR BroadcastToWindowList(WPARAM wParam, LPARAM lParam)
{
	int i;
	MSG *msg = (MSG*)lParam;
	for (i=0;i<windowListCount;i++)
		if (windowList[i].hList == (HANDLE)wParam)
			SendMessage(windowList[i].hwnd, msg->message, msg->wParam, msg->lParam);
	return 0;
}

static INT_PTR BroadcastToWindowListAsync(WPARAM wParam, LPARAM lParam)
{
	int i;
	MSG *msg = (MSG*)lParam;
	for (i=0;i<windowListCount;i++)
		if (windowList[i].hList == (HANDLE)wParam)
			PostMessage(windowList[i].hwnd, msg->message, msg->wParam, msg->lParam);
	return 0;
}

int InitWindowList(void)
{
	CreateServiceFunction(MS_UTILS_ALLOCWINDOWLIST, AllocWindowList);
	CreateServiceFunction(MS_UTILS_ADDTOWINDOWLIST, AddToWindowList);
	CreateServiceFunction(MS_UTILS_REMOVEFROMWINDOWLIST, RemoveFromWindowList);
	CreateServiceFunction(MS_UTILS_BROADCASTTOWINDOWLIST, BroadcastToWindowList);
	CreateServiceFunction(MS_UTILS_BROADCASTTOWINDOWLIST_ASYNC, BroadcastToWindowListAsync);
	CreateServiceFunction(MS_UTILS_FINDWINDOWINLIST, FindInWindowList);
	return 0;
}

void FreeWindowList(void)
{
	if (windowList) {
		mir_free(windowList);
		windowList = NULL;
	}
	windowListCount = 0;
	nextWindowListId = 1;
}