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/*
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 "commonheaders.h"
static HANDLE hEventDefaultChanged, hEventEnabled;
static bool g_bEnabled;
void InitMetaContacts()
{
hEventDefaultChanged = CreateHookableEvent(ME_MC_DEFAULTTCHANGED);
hEventEnabled = CreateHookableEvent(ME_MC_ENABLED);
}
DBCachedContact* CheckMeta(MCONTACT hMeta)
{
if (!g_bEnabled)
return NULL;
DBCachedContact *cc = currDb->m_cache->GetCachedContact(hMeta);
return (cc == NULL || cc->nSubs == -1) ? NULL : cc;
}
int Meta_GetContactNumber(DBCachedContact *cc, MCONTACT hContact)
{
if (g_bEnabled)
for (int i = 0; i < cc->nSubs; i++)
if (cc->pSubs[i] == hContact)
return i;
return -1;
}
MCONTACT Meta_GetContactHandle(DBCachedContact *cc, int contact_number)
{
if (contact_number >= cc->nSubs || contact_number < 0 || !g_bEnabled)
return 0;
return cc->pSubs[contact_number];
}
/////////////////////////////////////////////////////////////////////////////////////////
// metacontacts
MIR_CORE_DLL(BOOL) db_mc_isEnabled(void)
{
return g_bEnabled;
}
MIR_CORE_DLL(void) db_mc_enable(BOOL bEnabled)
{
g_bEnabled = bEnabled != 0;
NotifyEventHooks(hEventEnabled, g_bEnabled, 0);
}
MIR_CORE_DLL(BOOL) db_mc_isMeta(MCONTACT hContact)
{
if (currDb == NULL || !g_bEnabled) return FALSE;
DBCachedContact *cc = currDb->m_cache->GetCachedContact(hContact);
return (cc == NULL) ? FALSE : cc->nSubs != -1;
}
MIR_CORE_DLL(BOOL) db_mc_isSub(MCONTACT hContact)
{
if (currDb == NULL || !g_bEnabled) return FALSE;
DBCachedContact *cc = currDb->m_cache->GetCachedContact(hContact);
return (cc == NULL) ? FALSE : cc->parentID != 0;
}
//returns a handle to the default contact, or null on failure
MIR_CORE_DLL(MCONTACT) db_mc_getDefault(MCONTACT hMetaContact)
{
DBCachedContact *cc = CheckMeta(hMetaContact);
if (cc == NULL)
return 0;
return (cc->nDefault != -1) ? Meta_GetContactHandle(cc, cc->nDefault) : 0;
}
//returns the default contact number, or -1 on failure
MIR_CORE_DLL(int) db_mc_getDefaultNum(MCONTACT hMetaContact)
{
DBCachedContact *cc = CheckMeta(hMetaContact);
return (cc == NULL) ? -1 : cc->nDefault;
}
//returns the number of subcontacts, or -1 on failure
MIR_CORE_DLL(int) db_mc_getSubCount(MCONTACT hMetaContact)
{
DBCachedContact *cc = CheckMeta(hMetaContact);
return (cc == NULL) ? -1 : cc->nSubs;
}
// returns parent hContact for a subcontact or NULL if it's not a sub
MIR_CORE_DLL(MCONTACT) db_mc_getMeta(MCONTACT hSubContact)
{
if (currDb == NULL) return NULL;
DBCachedContact *cc = currDb->m_cache->GetCachedContact(hSubContact);
return (cc == NULL) ? NULL : cc->parentID;
}
// returns parent hContact for a subcontact or hContact itself if it's not a sub
MIR_CORE_DLL(MCONTACT) db_mc_tryMeta(MCONTACT hContact)
{
if (currDb == NULL) return hContact;
DBCachedContact *cc = currDb->m_cache->GetCachedContact(hContact);
if (cc == NULL) return hContact;
return (cc->IsSub()) ? cc->parentID : hContact;
}
// returns a subcontact with the given index
MIR_CORE_DLL(MCONTACT) db_mc_getSub(MCONTACT hMetaContact, int iNum)
{
DBCachedContact *cc = CheckMeta(hMetaContact);
return (cc == NULL) ? 0 : Meta_GetContactHandle(cc, iNum);
}
//sets the default contact, using the subcontact's handle
MIR_CORE_DLL(int) db_mc_setDefault(MCONTACT hMetaContact, MCONTACT hSub, BOOL bWriteDb)
{
DBCachedContact *cc = CheckMeta(hMetaContact);
if (cc == NULL)
return 1;
int contact_number = Meta_GetContactNumber(cc, hSub);
if (contact_number == -1)
return 1;
if (cc->nDefault != contact_number) {
cc->nDefault = contact_number;
if (bWriteDb)
currDb->MetaSetDefault(cc);
NotifyEventHooks(hEventDefaultChanged, hMetaContact, hSub);
}
return 0;
}
//sets the default contact, using the subcontact's number
MIR_CORE_DLL(int) db_mc_setDefaultNum(MCONTACT hMetaContact, int iNum, BOOL bWriteDb)
{
DBCachedContact *cc = CheckMeta(hMetaContact);
if (cc == NULL)
return 1;
if (iNum >= cc->nSubs || iNum < 0)
return 1;
if (cc->nDefault != iNum) {
cc->nDefault = iNum;
if (bWriteDb)
currDb->MetaSetDefault(cc);
NotifyEventHooks(hEventDefaultChanged, hMetaContact, Meta_GetContactHandle(cc, iNum));
}
return 0;
}
extern "C" MIR_CORE_DLL(void) db_mc_notifyDefChange(WPARAM wParam, LPARAM lParam)
{
NotifyEventHooks(hEventDefaultChanged, wParam, lParam);
}
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