kaddressbook Library API Documentation

kablock.cpp

00001 /*
00002     This file is part of KAddressBook.
00003     Copyright (c) 2003 Tobias Koenig <tokoe@kde.org>
00004 
00005     This program is free software; you can redistribute it and/or modify
00006     it under the terms of the GNU General Public License as published by
00007     the Free Software Foundation; either version 2 of the License, or
00008     (at your option) any later version.
00009 
00010     This program is distributed in the hope that it will be useful,
00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
00013     GNU General Public License for more details.
00014 
00015     You should have received a copy of the GNU General Public License
00016     along with this program; if not, write to the Free Software
00017     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
00018 
00019     As a special exception, permission is given to link this program
00020     with any edition of Qt, and distribute the resulting executable,
00021     without including the source code for Qt in the source distribution.
00022 */
00023 
00024 #include <klocale.h>
00025 #include <kmessagebox.h>
00026 #include <kstaticdeleter.h>
00027 
00028 #include "kablock.h"
00029 
00030 KABLock *KABLock::mSelf = 0;
00031 
00032 static KStaticDeleter<KABLock> kabLockDeleter;
00033 
00034 KABLock::KABLock( KABC::AddressBook *ab )
00035   : mAddressBook( ab )
00036 {
00037 }
00038 
00039 KABLock::~KABLock()
00040 {
00041 }
00042 
00043 KABLock *KABLock::self( KABC::AddressBook *ab )
00044 {
00045   if ( !mSelf )
00046     kabLockDeleter.setObject( mSelf, new KABLock( ab ) );
00047 
00048   return mSelf;
00049 }
00050 
00051 bool KABLock::lock( KABC::Resource *resource )
00052 {
00053   if ( mLocks.find( resource ) == mLocks.end() ) { // not locked yet
00054     KABC::Ticket *ticket = mAddressBook->requestSaveTicket( resource );
00055     if ( !ticket ) {
00056       return false;
00057     } else {
00058       LockEntry entry;
00059       entry.ticket = ticket;
00060       entry.counter = 1;
00061       mLocks.insert( resource, entry );
00062     }
00063   } else {
00064     LockEntry &entry = mLocks[ resource ];
00065     entry.counter++;
00066   }
00067 
00068   return true;
00069 }
00070 
00071 bool KABLock::unlock( KABC::Resource *resource )
00072 {
00073   if ( mLocks.find( resource ) == mLocks.end() ) { // hmm, not good...
00074     return false;
00075   } else {
00076     LockEntry &entry = mLocks[ resource ];
00077     entry.counter--;
00078 
00079     if ( entry.counter == 0 ) {
00080       mAddressBook->save( entry.ticket );
00081 //      # Activate in KDE 4.0
00082 //      mAddressBook->releaseSaveTicket( entry.ticket );
00083 
00084       mLocks.remove( resource );
00085     }
00086   }
00087 
00088   return true;
00089 }
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This file is part of the documentation for kaddressbook Library Version 3.2.2.
Documentation copyright © 1996-2004 the KDE developers.
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