src/versioncontrol/updateitemstatesthread.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2009 by Peter Penz <peter.penz@gmx.at>                  *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #include "updateitemstatesthread.h"
  21
  22 UpdateItemStatesThread::UpdateItemStatesThread() :
  23     QThread(),
  24     m_retrievedItems(false),
  25     m_mutex(0),
  26     m_itemStates()
  27 {
  28     static QMutex globalMutex;
  29     m_mutex = &globalMutex;
  30 }
  31
  32 UpdateItemStatesThread::~UpdateItemStatesThread()
  33 {
  34 }
  35
  36 void UpdateItemStatesThread::setData(KVersionControlPlugin* plugin,
  37                                      const QList<VersionControlObserver::ItemState>& itemStates)
  38 {
  39     m_plugin = plugin;
  40     m_itemStates = itemStates;
  41 }
  42
  43 void UpdateItemStatesThread::run()
  44 {
  45     Q_ASSERT(!m_itemStates.isEmpty());
  46     Q_ASSERT(m_plugin != 0);
  47
  48     // The items from m_itemStates may be located in different directory levels. The version
  49     // plugin requires the root directory for KVersionControlPlugin::beginRetrieval(). Instead
  50     // of doing an expensive search, we utilize the knowledge of the implementation of
  51     // VersionControlObserver::addDirectory() to be sure that the last item contains the root.
  52     const QString directory = m_itemStates.last().item.url().directory(KUrl::AppendTrailingSlash);
  53
  54     QMutexLocker locker(m_mutex);
  55     m_retrievedItems = false;
  56     if (m_plugin->beginRetrieval(directory)) {
  57         const int count = m_itemStates.count();
  58         for (int i = 0; i < count; ++i) {
  59             m_itemStates[i].version = m_plugin->versionState(m_itemStates[i].item);
  60         }
  61         m_plugin->endRetrieval();
  62         m_retrievedItems = true;
  63     }
  64 }
  65
  66 bool UpdateItemStatesThread::beginReadItemStates()
  67 {
  68     return m_mutex->tryLock(300);
  69 }
  70
  71 void UpdateItemStatesThread::endReadItemStates()
  72 {
  73     m_mutex->unlock();
  74 }
  75
  76 QList<VersionControlObserver::ItemState> UpdateItemStatesThread::itemStates() const
  77 {
  78     return m_itemStates;
  79 }
  80
  81 bool UpdateItemStatesThread::retrievedItems() const
  82 {
  83     return m_retrievedItems;
  84 }
  85
  86 void UpdateItemStatesThread::deleteWhenFinished()
  87 {
  88     connect(this, SIGNAL(finished()), this, SLOT(slotFinished()));
  89 }
  90
  91 void UpdateItemStatesThread::slotFinished()
  92 {
  93     deleteLater();
  94 }
  95
  96 #include "updateitemstatesthread.moc"