Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdepim@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 704 insertions, 0 deletions

diff --git a/knode/kngroupmanager.cpp b/knode/kngroupmanager.cpp
new file mode 100644
index 000000000..584896091
--- /dev/null
+++ b/knode/kngroupmanager.cpp
@@ -0,0 +1,704 @@
+/*
+    KNode, the KDE newsreader
+    Copyright (c) 1999-2005 the KNode authors.
+    See file AUTHORS for details
+
+    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.
+    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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, US
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <qdir.h>
+
+#include <klocale.h>
+#include <kmessagebox.h>
+#include <kiconloader.h>
+#include <kdebug.h>
+#include <kcharsets.h>
+
+#include "articlewidget.h"
+#include "knmainwidget.h"
+#include "knarticlemanager.h"
+#include "kngroupdialog.h"
+#include "knnntpaccount.h"
+#include "knprotocolclient.h"
+#include "kncleanup.h"
+#include "knnetaccess.h"
+#include "knglobals.h"
+#include "knconfigmanager.h"
+#include "resource.h"
+#include "utilities.h"
+#include "knarticlewindow.h"
+#include "knmemorymanager.h"
+
+using namespace KNode;
+
+
+//=================================================================================
+
+// helper classes for the group selection dialog (getting the server's grouplist,
+// getting recently created groups)
+
+
+KNGroupInfo::KNGroupInfo()
+{
+}
+
+
+KNGroupInfo::KNGroupInfo(const QString &n_ame, const QString &d_escription, bool n_ewGroup, bool s_ubscribed, KNGroup::Status s_tatus)
+  : name(n_ame), description(d_escription), newGroup(n_ewGroup), subscribed(s_ubscribed),
+    status(s_tatus)
+{
+}
+
+
+KNGroupInfo::~KNGroupInfo()
+{
+}
+
+
+bool KNGroupInfo::operator== (const KNGroupInfo &gi2)
+{
+  return (name == gi2.name);
+}
+
+
+bool KNGroupInfo::operator< (const KNGroupInfo &gi2)
+{
+  return (name < gi2.name);
+}
+
+
+//===============================================================================
+
+
+KNGroupListData::KNGroupListData()
+  : codecForDescriptions(0)
+{
+  groups = new QSortedList<KNGroupInfo>;
+  groups->setAutoDelete(true);
+}
+
+
+
+KNGroupListData::~KNGroupListData()
+{
+  delete groups;
+}
+
+
+
+bool KNGroupListData::readIn(KNProtocolClient *client)
+{
+  KNFile f(path+"groups");
+  QCString line;
+  int sepPos1,sepPos2;
+  QString name,description;
+  bool sub;
+  KNGroup::Status status=KNGroup::unknown;
+  QTime timer;
+  uint size=f.size()+2;
+
+  timer.start();
+  if (client) client->updatePercentage(0);
+
+  if(f.open(IO_ReadOnly)) {
+    while(!f.atEnd()) {
+      line = f.readLine();
+      sepPos1 = line.find(' ');
+
+      if (sepPos1==-1) {        // no description
+        name = QString::fromUtf8(line);
+        description = QString::null;
+        status = KNGroup::unknown;
+      } else {
+        name = QString::fromUtf8(line.left(sepPos1));
+
+        sepPos2 = line.find(' ',sepPos1+1);
+        if (sepPos2==-1) {        // no status
+          description = QString::fromUtf8(line.right(line.length()-sepPos1-1));
+          status = KNGroup::unknown;
+        } else {
+          description = QString::fromUtf8(line.right(line.length()-sepPos2-1));
+          switch (line[sepPos1+1]) {
+            case 'u':   status = KNGroup::unknown;
+                        break;
+            case 'n':   status = KNGroup::readOnly;
+                        break;
+            case 'y':   status = KNGroup::postingAllowed;
+                        break;
+            case 'm':   status = KNGroup::moderated;
+                        break;
+          }
+        }
+      }
+
+      if (subscribed.contains(name)) {
+        subscribed.remove(name);    // group names are unique, we wont find it again anyway...
+        sub = true;
+      } else
+        sub = false;
+
+      groups->append(new KNGroupInfo(name,description,false,sub,status));
+
+      if (timer.elapsed() > 200) {           // don't flicker
+        timer.restart();
+        if (client) client->updatePercentage((f.at()*100)/size);
+      }
+    }
+
+    f.close();
+    return true;
+  } else {
+    kdWarning(5003) << "unable to open " << f.name() << " reason " << f.status() << endl;
+    return false;
+  }
+}
+
+
+
+bool KNGroupListData::writeOut()
+{
+  QFile f(path+"groups");
+  QCString temp;
+
+  if(f.open(IO_WriteOnly)) {
+    for (KNGroupInfo *i=groups->first(); i; i=groups->next()) {
+      temp = i->name.utf8();
+      switch (i->status) {
+        case KNGroup::unknown: temp += " u ";
+                               break;
+        case KNGroup::readOnly: temp += " n ";
+                                break;
+        case KNGroup::postingAllowed: temp += " y ";
+                                      break;
+        case KNGroup::moderated: temp += " m ";
+                                 break;
+      }
+      temp += i->description.utf8() + "\n";
+      f.writeBlock(temp.data(),temp.length());
+    }
+    f.close();
+    return true;
+  } else {
+    kdWarning(5003) << "unable to open " << f.name() << " reason " << f.status() << endl;
+    return false;
+  }
+}
+
+
+
+// merge in new groups, we want to preserve the "subscribed"-flag
+// of the loaded groups and the "new"-flag of the new groups.
+void KNGroupListData::merge(QSortedList<KNGroupInfo>* newGroups)
+{
+  bool subscribed;
+
+  for (KNGroupInfo *i=newGroups->first(); i; i=newGroups->next()) {
+    if (groups->find(i)>=0) {
+      subscribed = groups->current()->subscribed;
+      groups->remove();   // avoid duplicates
+    } else
+      subscribed = false;
+    groups->append(new KNGroupInfo(i->name,i->description,true,subscribed,i->status));
+  }
+
+  groups->sort();
+}
+
+
+QSortedList<KNGroupInfo>* KNGroupListData::extractList()
+{
+  QSortedList<KNGroupInfo>* temp = groups;
+  groups = 0;
+  return temp;
+}
+
+
+//===============================================================================
+
+
+KNGroupManager::KNGroupManager(QObject * parent, const char * name)
+  : QObject(parent,name)
+{
+  c_urrentGroup=0;
+  a_rticleMgr = knGlobals.articleManager();
+}
+
+
+KNGroupManager::~KNGroupManager()
+{
+  for ( QValueList<KNGroup*>::Iterator it = mGroupList.begin(); it != mGroupList.end(); ++it )
+    delete (*it);
+}
+
+
+void KNGroupManager::syncGroups()
+{
+  for ( QValueList<KNGroup*>::Iterator it = mGroupList.begin(); it != mGroupList.end(); ++it ) {
+    (*it)->syncDynamicData();
+    (*it)->saveInfo();
+  }
+}
+
+
+void KNGroupManager::loadGroups(KNNntpAccount *a)
+{
+  KNGroup *group;
+
+  QString dir(a->path());
+  if (dir.isNull())
+    return;
+  QDir d(dir);
+
+  QStringList entries(d.entryList("*.grpinfo"));
+  for(QStringList::Iterator it=entries.begin(); it != entries.end(); ++it) {
+    group=new KNGroup(a);
+    if (group->readInfo(dir+(*it))) {
+      mGroupList.append( group );
+      emit groupAdded(group);
+    } else {
+      delete group;
+      kdError(5003) << "Unable to load " << (*it) << "!" << endl;
+    }
+  }
+}
+
+
+void KNGroupManager::getSubscribed(KNNntpAccount *a, QStringList &l)
+{
+  l.clear();
+  for ( QValueList<KNGroup*>::Iterator it = mGroupList.begin(); it != mGroupList.end(); ++it )
+    if ( (*it)->account() == a )
+      l.append( (*it)->groupname() );
+}
+
+
+QValueList<KNGroup*> KNGroupManager::groupsOfAccount( KNNntpAccount *a )
+{
+  QValueList<KNGroup*> ret;
+  for ( QValueList<KNGroup*>::Iterator it = mGroupList.begin(); it != mGroupList.end(); ++it )
+    if ( (*it)->account() == a )
+      ret.append( (*it) );
+  return ret;
+}
+
+
+bool KNGroupManager::loadHeaders(KNGroup *g)
+{
+  if (!g)
+    return false;
+
+  if (g->isLoaded())
+    return true;
+
+  // we want to delete old stuff first => reduce vm fragmentation
+  knGlobals.memoryManager()->prepareLoad(g);
+
+  if (g->loadHdrs()) {
+    knGlobals.memoryManager()->updateCacheEntry( g );
+    return true;
+  }
+
+  return false;
+}
+
+
+bool KNGroupManager::unloadHeaders(KNGroup *g, bool force)
+{
+  if(!g || g->isLocked())
+    return false;
+
+  if(!g->isLoaded())
+    return true;
+
+  if (!force && (c_urrentGroup == g))
+    return false;
+
+  if (g->unloadHdrs(force))
+    knGlobals.memoryManager()->removeCacheEntry(g);
+  else
+    return false;
+
+  return true;
+}
+
+
+KNGroup* KNGroupManager::group(const QString &gName, const KNServerInfo *s)
+{
+  for ( QValueList<KNGroup*>::Iterator it = mGroupList.begin(); it != mGroupList.end(); ++it )
+    if ( (*it)->account() == s && (*it)->groupname() == gName )
+      return (*it);
+
+  return 0;
+}
+
+
+KNGroup* KNGroupManager::firstGroupOfAccount(const KNServerInfo *s)
+{
+  for ( QValueList<KNGroup*>::Iterator it = mGroupList.begin(); it != mGroupList.end(); ++it )
+    if ( (*it)->account() == s )
+      return (*it);
+
+  return 0;
+}
+
+
+void KNGroupManager::expireAll(KNCleanUp *cup)
+{
+  for ( QValueList<KNGroup*>::Iterator it = mGroupList.begin(); it != mGroupList.end(); ++it ) {
+    if( (*it)->isLocked() || (*it)->lockedArticles() > 0 )
+      continue;
+    if ( !(*it)->activeCleanupConfig()->expireToday() )
+      continue;
+    cup->appendCollection( *(it) );
+  }
+}
+
+
+void KNGroupManager::expireAll(KNNntpAccount *a)
+{
+  KNCleanUp *cup = new KNCleanUp();
+
+  for ( QValueList<KNGroup*>::Iterator it = mGroupList.begin(); it != mGroupList.end(); ++it ) {
+    if( (*it)->account() != a  || (*it)->isLocked() || (*it)->lockedArticles() > 0 )
+      continue;
+
+    KNArticleWindow::closeAllWindowsForCollection( (*it) );
+    cup->appendCollection( (*it) );
+  }
+
+  cup->start();
+
+  for ( QValueList<KNGroup*>::Iterator it = mGroupList.begin(); it != mGroupList.end(); ++it ) {
+    if( (*it)->account() != a  || (*it)->isLocked() || (*it)->lockedArticles() > 0 )
+      continue;
+
+    emit groupUpdated( (*it) );
+    if ( (*it) == c_urrentGroup ) {
+      if ( loadHeaders( (*it) ) )
+        a_rticleMgr->showHdrs();
+      else
+        a_rticleMgr->setGroup(0);
+    }
+  }
+
+  delete cup;
+}
+
+
+void KNGroupManager::showGroupDialog(KNNntpAccount *a, QWidget *parent)
+{
+  KNGroupDialog* gDialog=new KNGroupDialog((parent!=0)? parent:knGlobals.topWidget, a);
+
+  connect(gDialog, SIGNAL(loadList(KNNntpAccount*)), this, SLOT(slotLoadGroupList(KNNntpAccount*)));
+  connect(gDialog, SIGNAL(fetchList(KNNntpAccount*)), this, SLOT(slotFetchGroupList(KNNntpAccount*)));
+  connect(gDialog, SIGNAL(checkNew(KNNntpAccount*,QDate)), this, SLOT(slotCheckForNewGroups(KNNntpAccount*,QDate)));
+  connect(this, SIGNAL(newListReady(KNGroupListData*)), gDialog, SLOT(slotReceiveList(KNGroupListData*)));
+
+  if(gDialog->exec()) {
+    KNGroup *g=0;
+
+    QStringList lst;
+    gDialog->toUnsubscribe(&lst);
+    if (lst.count()>0) {
+      if (KMessageBox::Yes == KMessageBox::questionYesNoList((parent!=0)? parent:knGlobals.topWidget,i18n("Do you really want to unsubscribe\nfrom these groups?"),
+                                                              lst, QString::null, i18n("Unsubscribe"), KStdGuiItem::cancel())) {
+        for ( QStringList::Iterator it = lst.begin(); it != lst.end(); ++it ) {
+          if((g=group(*it, a)))
+            unsubscribeGroup(g);
+        }
+      }
+    }
+
+    QSortedList<KNGroupInfo> lst2;
+    gDialog->toSubscribe(&lst2);
+    for(KNGroupInfo *var=lst2.first(); var; var=lst2.next()) {
+      subscribeGroup(var, a);
+    }
+  }
+
+  delete gDialog;
+}
+
+
+void KNGroupManager::subscribeGroup(const KNGroupInfo *gi, KNNntpAccount *a)
+{
+  KNGroup *grp;
+
+  grp=new KNGroup(a);
+  grp->setGroupname(gi->name);
+  grp->setDescription(gi->description);
+  grp->setStatus(gi->status);
+  grp->saveInfo();
+  mGroupList.append( grp );
+  emit groupAdded(grp);
+}
+
+
+bool KNGroupManager::unsubscribeGroup(KNGroup *g)
+{
+  KNNntpAccount *acc;
+  if(!g) g=c_urrentGroup;
+  if(!g) return false;
+
+  if((g->isLocked()) || (g->lockedArticles()>0)) {
+    KMessageBox::sorry(knGlobals.topWidget, i18n("The group \"%1\" is being updated currently.\nIt is not possible to unsubscribe from it at the moment.").arg(g->groupname()));
+    return false;
+  }
+
+  KNArticleWindow::closeAllWindowsForCollection(g);
+  ArticleWidget::collectionRemoved( g );
+
+  acc=g->account();
+
+  QDir dir(acc->path(),g->groupname()+"*");
+  if (dir.exists()) {
+    if (unloadHeaders(g, true)) {
+      if(c_urrentGroup==g) {
+        setCurrentGroup(0);
+        a_rticleMgr->updateStatusString();
+      }
+
+      const QFileInfoList *list = dir.entryInfoList();  // get list of matching files and delete all
+      if (list) {
+        QFileInfoListIterator it( *list );
+        while (it.current()) {
+          if (it.current()->fileName() == g->groupname()+".dynamic" ||
+              it.current()->fileName() == g->groupname()+".static" ||
+              it.current()->fileName() == g->groupname()+".grpinfo")
+          dir.remove(it.current()->fileName());
+          ++it;
+        }
+      }
+      kdDebug(5003) << "Files deleted!" << endl;
+
+      emit groupRemoved(g);
+      mGroupList.remove( g );
+      delete g;
+
+      return true;
+    }
+  }
+
+  return false;
+}
+
+
+void KNGroupManager::showGroupProperties(KNGroup *g)
+{
+  if(!g) g=c_urrentGroup;
+  if(!g) return;
+  g->showProperties();
+}
+
+
+void KNGroupManager::checkGroupForNewHeaders(KNGroup *g)
+{
+  if(!g) g=c_urrentGroup;
+  if(!g) return;
+  if(g->isLocked()) {
+    kdDebug(5003) << "KNGroupManager::checkGroupForNewHeaders() : group locked - returning" << endl;
+    return;
+  }
+
+  g->setMaxFetch(knGlobals.configManager()->readNewsGeneral()->maxToFetch());
+  emitJob( new KNJobData(KNJobData::JTfetchNewHeaders, this, g->account(), g) );
+}
+
+
+void KNGroupManager::expireGroupNow(KNGroup *g)
+{
+  if(!g) return;
+
+  if((g->isLocked()) || (g->lockedArticles()>0)) {
+    KMessageBox::sorry(knGlobals.topWidget,
+      i18n("This group cannot be expired because it is currently being updated.\n Please try again later."));
+    return;
+  }
+
+  KNArticleWindow::closeAllWindowsForCollection(g);
+
+  KNCleanUp cup;
+  cup.expireGroup(g, true);
+
+  emit groupUpdated(g);
+  if(g==c_urrentGroup) {
+    if( loadHeaders(g) )
+      a_rticleMgr->showHdrs();
+    else
+      a_rticleMgr->setGroup(0);
+  }
+}
+
+
+void KNGroupManager::reorganizeGroup(KNGroup *g)
+{
+  if(!g) g=c_urrentGroup;
+  if(!g) return;
+  g->reorganize();
+  if(g==c_urrentGroup)
+    a_rticleMgr->showHdrs();
+}
+
+
+void KNGroupManager::setCurrentGroup(KNGroup *g)
+{
+  c_urrentGroup=g;
+  a_rticleMgr->setGroup(g);
+  kdDebug(5003) << "KNGroupManager::setCurrentGroup() : group changed" << endl;
+
+  if(g) {
+    if( !loadHeaders(g) ) {
+      //KMessageBox::error(knGlobals.topWidget, i18n("Cannot load saved headers"));
+      return;
+    }
+    a_rticleMgr->showHdrs();
+    if(knGlobals.configManager()->readNewsGeneral()->autoCheckGroups())
+      checkGroupForNewHeaders(g);
+  }
+}
+
+
+void KNGroupManager::checkAll(KNNntpAccount *a, bool silent)
+{
+  if(!a) return;
+
+  for ( QValueList<KNGroup*>::Iterator it = mGroupList.begin(); it != mGroupList.end(); ++it ) {
+    if ( (*it)->account() == a ) {
+      (*it)->setMaxFetch( knGlobals.configManager()->readNewsGeneral()->maxToFetch() );
+      if ( silent )
+        emitJob( new KNJobData(KNJobData::JTsilentFetchNewHeaders, this, (*it)->account(), (*it) ) );
+      else
+        emitJob( new KNJobData(KNJobData::JTfetchNewHeaders, this, (*it)->account(), (*it) ) );
+    }
+  }
+}
+
+
+void KNGroupManager::processJob(KNJobData *j)
+{
+  if((j->type()==KNJobData::JTLoadGroups)||(j->type()==KNJobData::JTFetchGroups)||(j->type()==KNJobData::JTCheckNewGroups)) {
+    KNGroupListData *d=static_cast<KNGroupListData*>(j->data());
+
+    if (!j->canceled()) {
+      if (j->success()) {
+        if ((j->type()==KNJobData::JTFetchGroups)||(j->type()==KNJobData::JTCheckNewGroups)) {
+          // update the descriptions of the subscribed groups
+          for ( QValueList<KNGroup*>::Iterator it = mGroupList.begin(); it != mGroupList.end(); ++it ) {
+            if ( (*it)->account() == j->account() ) {
+              for ( KNGroupInfo* inf = d->groups->first(); inf; inf = d->groups->next() )
+                if ( inf->name == (*it)->groupname() ) {
+                  (*it)->setDescription( inf->description );
+                  (*it)->setStatus( inf->status );
+                  break;
+                }
+            }
+          }
+        }
+        emit(newListReady(d));
+      } else {
+        KMessageBox::error(knGlobals.topWidget, j->errorString());
+        emit(newListReady(0));
+      }
+    } else
+      emit(newListReady(0));
+
+    delete j;
+    delete d;
+
+
+  } else {               //KNJobData::JTfetchNewHeaders or KNJobData::JTsilentFetchNewHeaders
+    KNGroup *group=static_cast<KNGroup*>(j->data());
+
+    if (!j->canceled()) {
+      if (j->success()) {
+        if(group->lastFetchCount()>0) {
+          group->scoreArticles();
+          group->processXPostBuffer(true);
+          emit groupUpdated(group);
+          group->saveInfo();
+          knGlobals.memoryManager()->updateCacheEntry(group);
+        }
+      } else {
+        // ok, hack (?):
+        // stop all other active fetch jobs, this prevents that
+        // we show multiple error dialogs if a server is unavailable
+        knGlobals.netAccess()->stopJobsNntp(KNJobData::JTfetchNewHeaders);
+        knGlobals.netAccess()->stopJobsNntp(KNJobData::JTsilentFetchNewHeaders);
+        if(!(j->type()==KNJobData::JTsilentFetchNewHeaders)) {
+          KMessageBox::error(knGlobals.topWidget, j->errorString());
+        }
+      }
+    }
+    if(group==c_urrentGroup)
+      a_rticleMgr->showHdrs(false);
+
+    delete j;
+  }
+}
+
+
+// load group list from disk (if this fails: ask user if we should fetch the list)
+void KNGroupManager::slotLoadGroupList(KNNntpAccount *a)
+{
+  KNGroupListData *d = new KNGroupListData();
+  d->path = a->path();
+
+  if(!QFileInfo(d->path+"groups").exists()) {
+    if (KMessageBox::Yes==KMessageBox::questionYesNo(knGlobals.topWidget,i18n("You do not have any groups for this account;\ndo you want to fetch a current list?"), QString::null, i18n("Fetch List"), i18n("Do Not Fetch"))) {
+      delete d;
+      slotFetchGroupList(a);
+      return;
+    } else {
+      emit(newListReady(d));
+      delete d;
+      return;
+    }
+  }
+
+  getSubscribed(a,d->subscribed);
+  d->getDescriptions = a->fetchDescriptions();
+
+  emitJob( new KNJobData(KNJobData::JTLoadGroups, this, a, d) );
+}
+
+
+// fetch group list from server
+void KNGroupManager::slotFetchGroupList(KNNntpAccount *a)
+{
+  KNGroupListData *d = new KNGroupListData();
+  d->path = a->path();
+  getSubscribed(a,d->subscribed);
+  d->getDescriptions = a->fetchDescriptions();
+  d->codecForDescriptions=KGlobal::charsets()->codecForName(knGlobals.configManager()->postNewsTechnical()->charset());
+
+  emitJob( new KNJobData(KNJobData::JTFetchGroups, this, a, d) );
+}
+
+
+// check for new groups (created after the given date)
+void KNGroupManager::slotCheckForNewGroups(KNNntpAccount *a, QDate date)
+{
+  KNGroupListData *d = new KNGroupListData();
+  d->path = a->path();
+  getSubscribed(a,d->subscribed);
+  d->getDescriptions = a->fetchDescriptions();
+  d->fetchSince = date;
+  d->codecForDescriptions=KGlobal::charsets()->codecForName(knGlobals.configManager()->postNewsTechnical()->charset());
+
+  emitJob( new KNJobData(KNJobData::JTCheckNewGroups, this, a, d) );
+}
+
+
+//--------------------------------
+
+#include "kngroupmanager.moc"
+
+// kate: space-indent on; indent-width 2;