kmail/attachmentlistview.cpp

   1 /*  -*- c++ -*-
   2     attachmentlistview.cpp
   3
   4     KMail, the KDE mail client.
   5     Copyright (c) 2003 Ingo Kloecker <kloecker@kde.org>
   6     Copyright (c) 2007 Thomas McGuire <Thomas.McGuire@gmx.net>
   7
   8     This program is free software; you can redistribute it and/or
   9     modify it under the terms of the GNU General Public License,
  10     version 2.0, as published by the Free Software Foundation.
  11     You should have received a copy of the GNU General Public License
  12     along with this program; if not, write to the Free Software Foundation,
  13     Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, US
  14 */
  15
  16 #include "attachmentlistview.h"
  17
  18
  19 #include <QHeaderView>
  20 #include <QContextMenuEvent>
  21 #include <QBuffer>
  22
  23 #include <klocale.h>
  24 #include <maillistdrag.h>
  25
  26 #include "kmfolder.h"
  27 #include "kmmsgdict.h"
  28 #include "kmcommands.h"
  29 #include "composer.h"
  30
  31
  32 static const int encryptColumn = 5;
  33
  34 namespace KMail {
  35
  36 AttachmentListView::AttachmentListView( KMail::Composer * composer,
  37                                         QWidget* parent )
  38   : QTreeWidget( parent ),
  39     mComposer( composer )
  40 {
  41   setDragDropMode( QAbstractItemView::DragDrop );
  42   setObjectName( "attachment list view" );
  43   setSelectionMode( QAbstractItemView::ExtendedSelection );
  44   setIndentation( 0 );
  45   setAllColumnsShowFocus( true );
  46   QStringList headerNames;
  47   headerNames << i18nc("@title collumn attachment name.", "Name")
  48               << i18nc("@title collumn attachment size.", "Size")
  49               << i18nc("@title collumn attachment encoding.", "Encoding")
  50               << i18nc("@title collumn attachment type.", "Type")
  51               << i18nc("@title collumn attachment compression checkbox.", "Compress")
  52               << i18nc("@title collumn attachment encryption checkbox.", "Encrypt")
  53               << i18nc("@title collumn attachment signed checkbox.", "Sign");
  54   setHeaderLabels( headerNames );
  55
  56   header()->setResizeMode( QHeaderView::Interactive );
  57   header()->setResizeMode( 3, QHeaderView::Stretch );
  58   header()->setStretchLastSection( false );
  59   setColumnWidth( 0, 200);
  60   setColumnWidth( 1, 80 );
  61   setColumnWidth( 2, 120 );
  62   setColumnWidth( 3, 120 );
  63   setColumnWidth( 4, 100 );
  64   setColumnWidth( 5, 80 );
  65   setColumnWidth( 6, 80 );
  66
  67   // We can not enable automatic sorting, because that would resort the list
  68   // when the list is sorted by size and the user clicks the compress checkbox.
  69   header()->setSortIndicatorShown( true );
  70   header()->setClickable( true );
  71   connect( header(), SIGNAL(sectionClicked(int)), this, SLOT(slotSort()) );
  72
  73   enableCryptoCBs( false );
  74
  75   // This is needed because QTreeWidget forgets to update when a column is
  76   // moved. It updates correctly when a column is resized, so trick it into
  77   // thinking a column was resized when it is moved.
  78   connect ( header(), SIGNAL(sectionMoved(int,int,int)),
  79             header(), SIGNAL(sectionResized(int,int,int)) );
  80 }
  81
  82 //-----------------------------------------------------------------------------
  83
  84 AttachmentListView::~AttachmentListView()
  85 {
  86 }
  87
  88 //-----------------------------------------------------------------------------
  89
  90 void AttachmentListView::enableCryptoCBs( bool enable )
  91 {
  92   bool enabledBefore = areCryptoCBsEnabled();
  93
  94   // Show the crypto columns if they were hidden before
  95   if ( enable && !enabledBefore ) {
  96
  97     // determine the total width of the columns
  98     int totalWidth = 0;
  99     for ( int col = 0; col < encryptColumn; col++ )
 100       totalWidth += header()->sectionSize( col );
 101
 102     int reducedTotalWidth = totalWidth - mEncryptColWidth - mSignColWidth;
 103
 104     // reduce the width of all columns so that the encrypt and sign columns fit
 105     int usedWidth = 0;
 106     for ( int col = 0; col < encryptColumn - 1; col++ ) {
 107       int newWidth = header()->sectionSize( col ) * reducedTotalWidth /
 108           totalWidth;
 109       setColumnWidth( col, newWidth );
 110       usedWidth += newWidth;
 111     }
 112
 113     // the last column before the encrypt column gets the remaining space
 114     // (because of rounding errors the width of this column isn't calculated
 115     // the same way as the width of the other columns)
 116     setColumnWidth( encryptColumn - 1, reducedTotalWidth - usedWidth );
 117     setColumnWidth( encryptColumn, mEncryptColWidth );
 118     setColumnWidth( encryptColumn + 1, mSignColWidth );
 119   }
 120
 121   // Hide the crypto columns if they were shown before
 122   if ( !enable && enabledBefore ) {
 123
 124     mEncryptColWidth = columnWidth( encryptColumn );
 125     mSignColWidth = columnWidth( encryptColumn + 1 );
 126
 127     // determine the total width of the columns
 128     int totalWidth = 0;
 129     for( int col = 0; col < header()->count(); col++ )
 130       totalWidth += header()->sectionSize( col );
 131
 132     int reducedTotalWidth = totalWidth - mEncryptColWidth - mSignColWidth;
 133
 134     // increase the width of all columns so that the visible columns take
 135     // up the whole space
 136     int usedWidth = 0;
 137     for( int col = 0; col < encryptColumn - 1; col++ ) {
 138       int newWidth = header()->sectionSize( col ) * totalWidth /
 139           reducedTotalWidth;
 140       setColumnWidth( col, newWidth );
 141       usedWidth += newWidth;
 142     }
 143
 144     // the last column before the encrypt column gets the remaining space
 145     // (because of rounding errors the width of this column isn't calculated
 146     // the same way as the width of the other columns)
 147     setColumnWidth( encryptColumn - 1, totalWidth - usedWidth );
 148     setColumnWidth( encryptColumn, 0 );
 149     setColumnWidth( encryptColumn + 1, 0 );
 150   }
 151 }
 152
 153 //-----------------------------------------------------------------------------
 154
 155 bool AttachmentListView::areCryptoCBsEnabled()
 156 {
 157   return ( header()->sectionSize( encryptColumn  ) != 0 );
 158 }
 159
 160 //-----------------------------------------------------------------------------
 161
 162 void AttachmentListView::dragEnterEvent( QDragEnterEvent* e )
 163 {
 164   // Ignore drags from ourself
 165   if ( e->source() == this )
 166     e->ignore();
 167   else {
 168     KUrl::List uriList = KUrl::List::fromMimeData( e->mimeData() );
 169     if( KPIM::MailList::canDecode( e->mimeData() ) || !uriList.isEmpty() )
 170       e->setAccepted( true );
 171     else
 172       QTreeWidget::dragEnterEvent( e );
 173   }
 174 }
 175
 176 //-----------------------------------------------------------------------------
 177
 178 void AttachmentListView::dragMoveEvent( QDragMoveEvent* e )
 179 {
 180   KUrl::List uriList = KUrl::List::fromMimeData( e->mimeData() );
 181   if( KPIM::MailList::canDecode( e->mimeData() ) || !uriList.isEmpty() )
 182     e->setAccepted( true );
 183   else
 184     QTreeWidget::dragMoveEvent( e );
 185 }
 186
 187 //-----------------------------------------------------------------------------
 188
 189 void AttachmentListView::dropEvent( QDropEvent* e )
 190 {
 191   const QMimeData *md = e->mimeData();
 192   if( KPIM::MailList::canDecode( md ) ) {
 193     e->accept();
 194     // Decode the list of serial numbers stored as the drag data
 195     QByteArray serNums = KPIM::MailList::serialsFromMimeData( md );
 196     QBuffer serNumBuffer( &serNums );
 197     serNumBuffer.open( QIODevice::ReadOnly );
 198     QDataStream serNumStream( &serNumBuffer );
 199     quint32 serNum;
 200     KMFolder *folder = 0;
 201     int idx;
 202     QList<KMMsgBase*> messageList;
 203     while( !serNumStream.atEnd() ) {
 204       KMMsgBase *msgBase = 0;
 205       serNumStream >> serNum;
 206       KMMsgDict::instance()->getLocation( serNum, &folder, &idx );
 207       if( folder )
 208         msgBase = folder->getMsgBase( idx );
 209       if( msgBase )
 210         messageList.append( msgBase );
 211     }
 212     serNumBuffer.close();
 213     uint identity = folder ? folder->identity() : 0;
 214     KMCommand *command = new KMForwardAttachedCommand( mComposer, messageList,
 215                                                        identity, mComposer );
 216     command->start();
 217   }
 218   else {
 219     KUrl::List urlList = KUrl::List::fromMimeData( md );
 220     if ( !urlList.isEmpty() ) {
 221       e->accept();
 222       for( KUrl::List::Iterator it = urlList.begin();
 223            it != urlList.end(); ++it ) {
 224         mComposer->addAttach( *it );
 225       }
 226     }
 227     else {
 228       QTreeWidget::dropEvent( e );
 229     }
 230   }
 231 }
 232
 233 //-----------------------------------------------------------------------------
 234
 235 void AttachmentListView::keyPressEvent( QKeyEvent * e )
 236 {
 237   if ( e->key() == Qt::Key_Delete ) {
 238     emit attachmentDeleted();
 239   }
 240 }
 241
 242 void AttachmentListView::startDrag( Qt::DropActions supportedActions )
 243 {
 244   Q_UNUSED( supportedActions );
 245   emit dragStarted();
 246 }
 247
 248 void AttachmentListView::contextMenuEvent( QContextMenuEvent* event )
 249 {
 250   emit rightButtonPressed( itemAt( event->pos() ) );
 251 }
 252
 253 //-----------------------------------------------------------------------------
 254
 255 void AttachmentListView::slotSort()
 256 {
 257   sortByColumn( header()->sortIndicatorSection(), header()->sortIndicatorOrder() );
 258 }
 259
 260
 261 } // namespace KMail
 262
 263 #include "attachmentlistview.moc"