libkdepim/multiplyinglineview_p.cpp

   1 /*
   2     Copyright (C) 2010 Casey Link <unnamedrambler@gmail.com>
   3     Copyright (C) 2009-2010 Klaralvdalens Datakonsult AB, a KDAB Group company <info@kdab.net>
   4
   5     Refactored from earlier code by:
   6     Copyright (c) 2010 Volker Krause <vkrause@kde.org>
   7     Copyright (c) 2004 Cornelius Schumacher <schumacher@kde.org>
   8
   9     This library is free software; you can redistribute it and/or modify it
  10     under the terms of the GNU Library General Public License as published by
  11     the Free Software Foundation; either version 2 of the License, or (at your
  12     option) any later version.
  13
  14     This library is distributed in the hope that it will be useful, but WITHOUT
  15     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
  17     License for more details.
  18
  19     You should have received a copy of the GNU Library General Public License
  20     along with this library; see the file COPYING.LIB.  If not, write to the
  21     Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  22     02110-1301, USA.
  23 */
  24 #include "multiplyinglineview_p.h"
  25
  26 #include <KDebug>
  27
  28 #include <QApplication>
  29 #include <QLayout>
  30 #include <QVBoxLayout>
  31 #include <QTimer>
  32 #include <QScrollBar>
  33 #include <QResizeEvent>
  34
  35 using namespace KPIM;
  36
  37 MultiplyingLineView::MultiplyingLineView( MultiplyingLineFactory* factory, MultiplyingLineEditor *parent )
  38   : QScrollArea( parent ), mCurDelLine( 0 ),
  39     mLineHeight( 0 ), mFirstColumnWidth( 0 ),
  40     mModified( false ), mCompletionMode( KGlobalSettings::completionMode() ),
  41     mPage( new QWidget( this ) ), mTopLayout( new QVBoxLayout( this ) ),
  42     mMultiplyingLineFactory( factory ), mAutoResize( false ), mDynamicSizeHint( true )
  43 {
  44   setWidgetResizable( true );
  45   setFrameStyle( QFrame::NoFrame );
  46
  47   mPage->setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Fixed );
  48   setWidget( mPage );
  49
  50   mTopLayout->setMargin( 0 );
  51   mTopLayout->setSpacing( 0 );
  52   mPage->setLayout( mTopLayout );
  53 }
  54
  55 MultiplyingLine* MultiplyingLineView::activeLine() const
  56 {
  57   return mLines.last();
  58 }
  59
  60 MultiplyingLine* MultiplyingLineView::emptyLine() const
  61 {
  62   foreach( MultiplyingLine* line, mLines ) {
  63     if ( line->isEmpty() )
  64       return line;
  65   }
  66   return 0;
  67 }
  68
  69 MultiplyingLine* MultiplyingLineView::addLine()
  70 {
  71   MultiplyingLine* line = mMultiplyingLineFactory->newLine( widget() );
  72
  73   mTopLayout->addWidget( line );
  74   line->setCompletionMode( mCompletionMode );
  75   line->show();
  76   connect( line, SIGNAL(returnPressed(KPIM::MultiplyingLine*)),
  77     SLOT(slotReturnPressed(KPIM::MultiplyingLine*)) );
  78   connect( line, SIGNAL(upPressed(KPIM::MultiplyingLine*)),
  79     SLOT(slotUpPressed(KPIM::MultiplyingLine*)) );
  80   connect( line, SIGNAL(downPressed(KPIM::MultiplyingLine*)),
  81     SLOT(slotDownPressed(KPIM::MultiplyingLine*)) );
  82   connect( line, SIGNAL(rightPressed()), SIGNAL(focusRight()) );
  83   connect( line, SIGNAL(deleteLine(KPIM::MultiplyingLine*)),
  84     SLOT(slotDecideLineDeletion(KPIM::MultiplyingLine*)) );
  85   connect( line, SIGNAL(completionModeChanged(KGlobalSettings::Completion)),
  86     SLOT(setCompletionMode(KGlobalSettings::Completion)) );
  87
  88   if( !mLines.isEmpty() ) {
  89     line->fixTabOrder( mLines.last()->tabOut() );
  90   }
  91   mLines.append( line );
  92   mFirstColumnWidth = line->setColumnWidth( mFirstColumnWidth );
  93   mLineHeight = line->minimumSizeHint().height();
  94   line->resize( viewport()->width(), mLineHeight );
  95   resizeView();
  96   ensureVisible( 0, mLines.count() * mLineHeight, 0, 0 );
  97
  98   QTimer::singleShot( 0, this, SLOT(moveScrollBarToEnd()) );
  99
 100   emit lineAdded( line );
 101   return line;
 102 }
 103
 104
 105 void MultiplyingLineView::moveScrollBarToEnd()
 106 {
 107 // scroll to bottom
 108    verticalScrollBar()->triggerAction( QAbstractSlider::SliderToMaximum );
 109 }
 110
 111
 112 void MultiplyingLineView::slotReturnPressed( MultiplyingLine *line )
 113 {
 114   if ( !line->data()->isEmpty() ) {
 115     MultiplyingLine *empty = emptyLine();
 116     if ( !empty ) empty = addLine();
 117     activateLine( empty );
 118   }
 119 }
 120
 121
 122 void MultiplyingLineView::slotDownPressed( MultiplyingLine *line )
 123 {
 124   int pos = mLines.indexOf( line );
 125   if ( pos >= (int)mLines.count() - 1 ) {
 126     emit focusDown();
 127   } else if ( pos >= 0 ) {
 128     activateLine( mLines.at( pos + 1 ) );
 129   }
 130 }
 131
 132
 133 void MultiplyingLineView::slotUpPressed( MultiplyingLine *line )
 134 {
 135   int pos = mLines.indexOf( line );
 136   if ( pos > 0 ) {
 137     activateLine( mLines.at( pos - 1 ) );
 138   } else {
 139     emit focusUp();
 140   }
 141 }
 142
 143
 144 void MultiplyingLineView::slotDecideLineDeletion( MultiplyingLine *line )
 145 {
 146   if ( !line->isEmpty() )
 147     mModified = true;
 148   if ( mLines.count() == 1 ) {
 149     line->clear();
 150   } else if ( mLines.indexOf( line ) != mLines.count() - 1 ) {
 151     mCurDelLine = line;
 152     slotDeleteLine();
 153   }
 154 }
 155
 156
 157 void MultiplyingLineView::slotDeleteLine()
 158 {
 159   if ( !mCurDelLine )
 160     return;
 161
 162   MultiplyingLine *line = mCurDelLine;
 163   line->aboutToBeDeleted();
 164   int pos = mLines.indexOf( line );
 165
 166   if ( mCurDelLine->isActive() ) {
 167     int newPos;
 168     if ( pos == 0 )
 169       newPos = pos + 1;
 170     else
 171       newPos = pos - 1;
 172
 173     // if there is something left to activate, do so
 174     if ( mLines.at( newPos ) )
 175       mLines.at( newPos )->activate();
 176   }
 177
 178   mLines.removeAll( line );
 179   line->hide();
 180   line->setParent( 0 );
 181   line->deleteLater();
 182
 183   emit lineDeleted( pos );
 184
 185   resizeView();
 186 }
 187
 188 void MultiplyingLineView::resizeView()
 189 {
 190   if ( mDynamicSizeHint ) {
 191     if ( !mAutoResize ) {
 192       if ( mLines.count() < 6 ) {
 193         setMinimumHeight( mLineHeight * mLines.count() );
 194 #ifdef Q_OS_WINCE
 195         widget()->resize( widget()->width(), mLineHeight * mLines.count() );
 196 #endif
 197       } else {
 198         setMinimumHeight( mLineHeight * 5 );
 199         setMaximumHeight( mLineHeight * mLines.count() );
 200 #ifdef Q_OS_WINCE
 201         widget()->resize( widget()->width(), mLineHeight * 5 );
 202 #endif
 203       }
 204     } else {
 205       setMinimumHeight( mLineHeight * mLines.count() );
 206 #ifdef Q_OS_WINCE
 207       widget()->resize( widget()->width(), mLineHeight * mLines.count() );
 208 #endif
 209     }
 210   }
 211
 212   parentWidget()->layout()->activate();
 213   emit sizeHintChanged();
 214   QTimer::singleShot( 0, this, SLOT(moveCompletionPopup()) );
 215 }
 216
 217 void MultiplyingLineView::activateLine( MultiplyingLine *line )
 218 {
 219   line->activate();
 220   ensureWidgetVisible( line );
 221 }
 222
 223 void MultiplyingLineView::resizeEvent ( QResizeEvent *ev )
 224 {
 225   QScrollArea::resizeEvent(ev);
 226   for( int i = 0; i < mLines.count(); ++i ) {
 227     mLines.at( i )->resize( ev->size().width(), mLineHeight );
 228   }
 229   ensureVisible( 0, mLines.count() * mLineHeight, 0, 0 );
 230 }
 231
 232 QSize MultiplyingLineView::sizeHint() const
 233 {
 234   if ( mDynamicSizeHint )
 235     return QSize( 200, mLineHeight * mLines.count() );
 236   else
 237     return QScrollArea::sizeHint();
 238 }
 239
 240 QSize MultiplyingLineView::minimumSizeHint() const
 241 {
 242   if ( mDynamicSizeHint ) {
 243     int height;
 244     int numLines = 5;
 245     if ( mLines.count() < numLines ) height = mLineHeight * mLines.count();
 246     else height = mLineHeight * numLines;
 247     return QSize( 200, height );
 248   } else
 249     return QScrollArea::minimumSizeHint();
 250 }
 251
 252 QList<MultiplyingLineData::Ptr> MultiplyingLineView::allData() const
 253 {
 254   QList<MultiplyingLineData::Ptr> data;
 255
 256   QListIterator<MultiplyingLine*> it( mLines );
 257   MultiplyingLine *line;
 258   while( it.hasNext()) {
 259     line = it.next();
 260     if ( !line->data()->isEmpty() ) {
 261       data.append( line->data() );
 262     }
 263   }
 264
 265   return data;
 266 }
 267
 268 void MultiplyingLineView::setCompletionMode ( KGlobalSettings::Completion mode )
 269 {
 270   if ( mCompletionMode == mode )
 271     return;
 272   mCompletionMode = mode;
 273
 274   QListIterator<MultiplyingLine*> it( mLines );
 275   while( it.hasNext() ) {
 276     MultiplyingLine *line = it.next();
 277     line->blockSignals( true );
 278     line->setCompletionMode( mode );
 279     line->blockSignals( false );
 280   }
 281   emit completionModeChanged( mode ); //report change to MultiplyingLineEditor
 282 }
 283
 284 void MultiplyingLineView::removeData( const MultiplyingLineData::Ptr &data )
 285 {
 286     // search a line which matches recipient and type
 287   QListIterator<MultiplyingLine*> it( mLines );
 288   MultiplyingLine *line = 0;
 289   while (it.hasNext()) {
 290     line = it.next();
 291     if ( line->data() == data)
 292       break;
 293   }
 294   if ( line )
 295     line->slotPropagateDeletion();
 296 }
 297
 298 bool MultiplyingLineView::isModified() const
 299 {
 300   if ( mModified )
 301     return true;
 302
 303   QListIterator<MultiplyingLine*> it( mLines );
 304   MultiplyingLine *line;
 305   while( it.hasNext()) {
 306   line = it.next();
 307     if ( line->isModified() ) {
 308       return true;
 309     }
 310   }
 311
 312   return false;
 313 }
 314
 315 void MultiplyingLineView::clearModified()
 316 {
 317   mModified = false;
 318
 319   QListIterator<MultiplyingLine*> it( mLines );
 320   MultiplyingLine *line;
 321   while( it.hasNext() ) {
 322   line = it.next();
 323     line->clearModified();
 324   }
 325 }
 326
 327 void MultiplyingLineView::setFocus()
 328 {
 329   if ( !mLines.empty() && mLines.last()->isActive() )
 330     setFocusBottom();
 331   else
 332     setFocusTop();
 333 }
 334
 335 void MultiplyingLineView::setFocusTop()
 336 {
 337   if ( !mLines.empty() ) {
 338     MultiplyingLine *line = mLines.first();
 339     if ( line )
 340       line->activate();
 341     else
 342       kWarning() <<"No first";
 343   }
 344   else
 345     kWarning() <<"No first";
 346 }
 347
 348 void MultiplyingLineView::setFocusBottom()
 349 {
 350   MultiplyingLine *line = mLines.last();
 351   if ( line ) {
 352     ensureWidgetVisible( line );
 353     line->activate();
 354   }
 355   else
 356     kWarning() <<"No last";
 357 }
 358
 359 int MultiplyingLineView::setFirstColumnWidth( int w )
 360 {
 361   mFirstColumnWidth = w;
 362
 363   QListIterator<MultiplyingLine*> it( mLines );
 364   MultiplyingLine *line;
 365   while(it.hasNext()) {
 366     line = it.next();
 367     mFirstColumnWidth = line->setColumnWidth( mFirstColumnWidth );
 368   }
 369
 370   resizeView();
 371   return mFirstColumnWidth;
 372 }
 373
 374 void MultiplyingLineView::moveCompletionPopup()
 375 {
 376   foreach ( MultiplyingLine *const line, mLines )
 377     line->moveCompletionPopup();
 378 }
 379
 380 QList< MultiplyingLine* > MultiplyingLineView::lines() const
 381 {
 382   return mLines;
 383 }
 384
 385 void MultiplyingLineView::setAutoResize( bool resize )
 386 {
 387   mAutoResize = resize;
 388
 389   if ( mAutoResize ) {
 390       setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
 391       setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
 392       setMaximumHeight( QWIDGETSIZE_MAX );
 393   } else {
 394       setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
 395       setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
 396   }
 397 }
 398
 399 bool MultiplyingLineView::autoResize()
 400 {
 401   return mAutoResize;
 402 }
 403
 404 void MultiplyingLineView::setDynamicSizeHint( bool dynamic )
 405 {
 406 #ifdef Q_OS_WINCE
 407   mDynamicSizeHint = true;
 408 #else
 409   mDynamicSizeHint = dynamic;
 410 #endif
 411 }
 412
 413 bool MultiplyingLineView::dynamicSizeHint() const
 414 {
 415   return mDynamicSizeHint;
 416 }
 417
 418 #include "multiplyinglineview_p.moc"