C++ Todo类代码示例

void KOTodoView::changeIncidenceDisplay(Incidence *incidence, int action)
{
  // The todo view only displays todos, so exit on all other incidences
  if ( incidence->type() != "Todo" )
    return;
  CalFilter *filter = calendar()->filter();
  bool isFiltered = filter && !filter->filterIncidence( incidence );
  Todo *todo = static_cast<Todo *>(incidence);
  if ( todo ) {
    KOTodoViewItem *todoItem = 0;
    if ( mTodoMap.contains( todo ) ) {
      todoItem = mTodoMap[todo];
    }
    switch ( action ) {
      case KOGlobals::INCIDENCEADDED:
      case KOGlobals::INCIDENCEEDITED:
        // If it's already there, edit it, otherwise just add
        if ( todoItem ) {
          if ( isFiltered ) {
            scheduleRemoveTodoItem( todoItem );
          } else {
            // correctly update changes in relations
            Todo*parent = dynamic_cast<Todo*>( todo->relatedTo() );
            KOTodoViewItem*parentItem = 0;
            if ( parent && mTodoMap.contains(parent) ) {
              parentItem = mTodoMap[ parent ];
            }
            if ( todoItem->parent() != parentItem ) {
              // The relations changed
              if ( parentItem ) {
                parentItem->insertItem( todoItem );
              } else {
                mTodoListView->insertItem( todoItem );
              }
            }
            todoItem->construct();
          }
        } else {
          if ( !isFiltered ) {
            insertTodoItem( todo );
          }
        }
        mTodoListView->sort();
        break;
      case KOGlobals::INCIDENCEDELETED:
        if ( todoItem ) {
          scheduleRemoveTodoItem( todoItem );
        }
        break;
      default:
        QTimer::singleShot( 0, this, SLOT( updateView() ) );
    }
  } else {
    // use a QTimer here, because when marking todos finished using
    // the checkbox, this slot gets called, but we cannot update the views
    // because we're still inside KOTodoViewItem::stateChange
    QTimer::singleShot(0,this,SLOT(updateView()));
  }
}

    Incidence * pasteIncidence( Incidence *inc,
                                const QDate &newDate,
                                const QTime *newTime = 0 )
    {
      if ( inc ) {
        inc = inc->clone();
        inc->recreate();
      }

      if ( inc && newDate.isValid() ) {
        if ( inc->type() == "Event" ) {

          Event *anEvent = static_cast<Event*>( inc );
          // Calculate length of event
          int daysOffset = anEvent->dtStart().date().daysTo(
            anEvent->dtEnd().date() );
          // new end date if event starts at the same time on the new day
          KDateTime endDate( anEvent->dtEnd() );
          endDate.setDate( newDate.addDays( daysOffset ) );

          KDateTime startDate( anEvent->dtStart() );
          startDate.setDate( newDate );
          if ( newTime ) {
            // additional offset for new time of day
            int addSecsOffset( anEvent->dtStart().time().secsTo( *newTime ) );
            endDate=endDate.addSecs( addSecsOffset );
            startDate.setTime( *newTime );
          }
          anEvent->setDtStart( startDate );
          anEvent->setDtEnd( endDate );

        } else if ( inc->type() == "Todo" ) {
          Todo *anTodo = static_cast<Todo*>( inc );
          KDateTime dueDate( anTodo->dtDue() );
          dueDate.setDate( newDate );
          if ( newTime ) {
            dueDate.setTime( *newTime );
          }
          anTodo->setDtDue( dueDate );
        } else if ( inc->type() == "Journal" ) {
          Journal *anJournal = static_cast<Journal*>( inc );
          KDateTime startDate( anJournal->dtStart() );
          startDate.setDate( newDate );
          if ( newTime ) {
            startDate.setTime( *newTime );
          } else {
            startDate.setTime( QTime( 0, 0, 0 ) );
          }
          anJournal->setDtStart( startDate );
        } else {
          kDebug() << "Trying to paste unknown incidence of type" << inc->type();
        }
      }

      return inc;
    }

void KOTodoView::setNewDate( QDate date )
{
  if ( !mActiveItem || !mChanger ) return;
  Todo *todo = mActiveItem->todo();
  if ( !todo ) return;

  if ( !todo->isReadOnly() && mChanger->beginChange( todo ) ) {
    Todo *oldTodo = todo->clone();

    QDateTime dt;
    dt.setDate( date );

    if ( !todo->doesFloat() )
      dt.setTime( todo->dtDue().time() );

    if ( date.isNull() )
      todo->setHasDueDate( false );
    else if ( !todo->hasDueDate() )
      todo->setHasDueDate( true );
    todo->setDtDue( dt );

    mActiveItem->construct();
    mChanger->changeIncidence( oldTodo, todo, KOGlobals::COMPLETION_MODIFIED );
    mChanger->endChange( todo );
    delete oldTodo;
  } else {
    kdDebug(5850) << "No active item, active item is read-only, or locking failed" << endl;
  }
}

void KOTodoView::setNewPriority(int index)
{
  if ( !mActiveItem || !mChanger ) return;
  Todo *todo = mActiveItem->todo();
  if ( !todo->isReadOnly () &&
       mChanger->beginChange( todo ) ) {
    Todo *oldTodo = todo->clone();
    todo->setPriority(mPriority[index]);
    mActiveItem->construct();

    mChanger->changeIncidence( oldTodo, todo, KOGlobals::PRIORITY_MODIFIED );
    mChanger->endChange( todo );
    delete oldTodo;
  }
}

void KOTodoView::addQuickTodo()
{
  if ( ! mQuickAdd->text().stripWhiteSpace().isEmpty() ) {
    Todo *todo = new Todo();
    todo->setSummary( mQuickAdd->text() );
    todo->setOrganizer( Person( KOPrefs::instance()->fullName(),
                        KOPrefs::instance()->email() ) );
    if ( !mChanger->addIncidence( todo, this ) ) {
      KODialogManager::errorSaveIncidence( this, todo );
      delete todo;
      return;
    }
    mQuickAdd->setText( QString::null );
  }
}

void TodoTest::testValidity()
{
    QDate dt = QDate::currentDate();
    Todo *todo = new Todo();
    todo->setDtStart(KDateTime(dt));
    todo->setDtDue(KDateTime(dt).addDays(1));
    todo->setSummary(QStringLiteral("To-do1 Summary"));
    todo->setDescription(QStringLiteral("This is a description of the first to-do"));
    todo->setLocation(QStringLiteral("the place"));
    todo->setPercentComplete(5);
    //KDE5: QVERIFY( todo->typeStr() == i18n( "to-do" ) );
    QVERIFY(todo->summary() == QLatin1String("To-do1 Summary"));
    QVERIFY(todo->location() == QLatin1String("the place"));
    QVERIFY(todo->percentComplete() == 5);
}

void KOWhatsNextView::appendTodo( Incidence *ev )
{
  if ( mTodos.find( ev ) != mTodos.end() ) return;

  mTodos.append( ev );

  mText += "<li><a href=\"todo:" + ev->uid() + "\">";
  mText += ev->summary();
  mText += "</a>";

  if ( ev->type()=="Todo" ) {
    Todo *todo = static_cast<Todo*>(ev);
    if ( todo->hasDueDate() ) {
      mText += i18n("  (Due: %1)")
         .arg( (todo->doesFloat())?(todo->dtDueDateStr()):(todo->dtDueStr()) );
    }
  }
  mText += "</li>\n";
}

void TodoTest::testRoles()
{
    const KDateTime today = KDateTime::currentUtcDateTime();
    const KDateTime yesterday = today.addDays(-1);
    Todo todo;
    todo.setDtStart(today.addDays(-1));
    todo.setDtDue(today);
    QCOMPARE(todo.dateTime(Incidence::RoleDisplayStart), today);
    QCOMPARE(todo.dateTime(Incidence::RoleDisplayEnd), today);
    todo.setDtDue(KDateTime());
    QCOMPARE(todo.dateTime(Incidence::RoleDisplayStart), yesterday);
    QCOMPARE(todo.dateTime(Incidence::RoleDisplayEnd), yesterday);
}

void ComparisonVisitorTest::testTodoComparison()
{
  const QString summary = QLatin1String( "Testing comparison" );
  const QString desc    = QLatin1String( "Testing ComparisonVisitor" );

  Todo reference;
  reference.setSummary( summary );
  reference.setDescription( desc );
  reference.setPercentComplete( 50 );

  // create a copy of the reference incidence
  Todo todo( reference );

  IncidenceBase *baseReference = &reference;
  IncidenceBase *baseIncidence = &todo;

  QVERIFY( mComparator.compare( baseIncidence, baseReference ) );

  // change a property of Todo (but not of IncidenceBase)
  todo.setPercentComplete( 100 );
  QVERIFY( !mComparator.compare( baseIncidence, baseReference ) );
}

void KOTodoView::changedCategories(int index)
{
  if ( !mActiveItem || !mChanger ) return;
  Todo *todo = mActiveItem->todo();
  if ( !todo ) return;

  if ( !todo->isReadOnly() && mChanger->beginChange( todo ) ) {
    Todo *oldTodo = todo->clone();

    QStringList categories = todo->categories ();
    if ( categories.find( mCategory[index] ) != categories.end() )
      categories.remove( mCategory[index] );
    else
      categories.insert( categories.end(), mCategory[index] );
    categories.sort();
    todo->setCategories( categories );
    mActiveItem->construct();
    mChanger->changeIncidence( oldTodo, todo, KOGlobals::CATEGORY_MODIFIED );
    mChanger->endChange( todo );
    delete oldTodo;
  } else {
    kdDebug(5850) << "No active item, active item is read-only, or locking failed" << endl;
  }
}

void KOTodoView::setNewPercentage( KOTodoViewItem *item, int percentage )
{
  kdDebug(5850) << "KOTodoView::setNewPercentage( " << percentage << "), item = " << item << endl;
  if ( !item || !mChanger  ) return;
  Todo *todo = item->todo();
  if ( !todo ) return;

  if ( !todo->isReadOnly () && mChanger->beginChange( todo ) ) {
    Todo *oldTodo = todo->clone();

/*  Old code to make sub-items's percentage related to this one's:
    QListViewItem *myChild = firstChild();
    KOTodoViewItem *item;
    while( myChild ) {
      item = static_cast<KOTodoViewItem*>(myChild);
      item->stateChange(state);
      myChild = myChild->nextSibling();
    }*/
    if ( percentage == 100 ) {
      todo->setCompleted( QDateTime::currentDateTime() );
      // If the todo does recur, it doesn't get set as completed. However, the
      // item is still checked. Uncheck it again.
      if ( !todo->isCompleted() ) item->setState( QCheckListItem::Off );
      else todo->setPercentComplete( percentage );
    } else {
      todo->setCompleted( false );
      todo->setPercentComplete( percentage );
    }
    item->construct();
    if ( todo->doesRecur() && percentage == 100 )
      mChanger->changeIncidence( oldTodo, todo, KOGlobals::COMPLETION_MODIFIED_WITH_RECURRENCE );
    else
      mChanger->changeIncidence( oldTodo, todo, KOGlobals::COMPLETION_MODIFIED );
    mChanger->endChange( todo );
    delete oldTodo;
  } else {
    item->construct();
    kdDebug(5850) << "No active item, active item is read-only, or locking failed" << endl;
  }
}

bool Todo::operator==( const Todo &todo ) const
{
  return
    Incidence::operator==( todo ) &&
    dtDue() == todo.dtDue() &&
    hasDueDate() == todo.hasDueDate() &&
    hasStartDate() == todo.hasStartDate() &&
    completed() == todo.completed() &&
    hasCompletedDate() == todo.hasCompletedDate() &&
    percentComplete() == todo.percentComplete();
}

void KOTodoView::copyTodoToDate( QDate date )
{
  QDateTime dt( date );

  if ( mActiveItem && mChanger ) {
    Todo *newTodo = mActiveItem->todo()->clone();
    newTodo->recreate();

   newTodo->setHasDueDate( !date.isNull() );
   newTodo->setDtDue( dt );
   newTodo->setPercentComplete( 0 );

   // avoid forking
   if ( newTodo->doesRecur() )
     newTodo->recurrence()->unsetRecurs();

   mChanger->addIncidence( newTodo, this );
 }
}

/** Dissociate a single occurrence or all future occurrences from a recurring sequence.
    The new incidence is returned, but not automatically inserted into the calendar,
    which is left to the calling application */
Incidence *Calendar::dissociateOccurrence(Incidence *incidence, QDate date,
        bool single)
{
    if(!incidence || !incidence->doesRecur())
        return 0;

    Incidence *newInc = incidence->clone();
    newInc->recreate();
    newInc->setRelatedTo(incidence);
    Recurrence *recur = newInc->recurrence();
    if(single)
    {
        recur->clear();
    }
    else
    {
        // Adjust the recurrence for the future incidences. In particular
        // adjust the "end after n occurrences" rules! "No end date" and "end by ..."
        // don't need to be modified.
        int duration = recur->duration();
        if(duration > 0)
        {
            int doneduration = recur->durationTo(date.addDays(-1));
            if(doneduration >= duration)
            {
                kdDebug(5850) << "The dissociated event already occurred more often "
                              << "than it was supposed to ever occur. ERROR!" << endl;
                recur->clear();
            }
            else
            {
                recur->setDuration(duration - doneduration);
            }
        }
    }
    // Adjust the date of the incidence
    if(incidence->type() == "Event")
    {
        Event *ev = static_cast<Event *>(newInc);
        QDateTime start(ev->dtStart());
        int daysTo = start.date().daysTo(date);
        ev->setDtStart(start.addDays(daysTo));
        ev->setDtEnd(ev->dtEnd().addDays(daysTo));
    }
    else if(incidence->type() == "Todo")
    {
        Todo *td = static_cast<Todo *>(newInc);
        bool haveOffset = false;
        int daysTo = 0;
        if(td->hasDueDate())
        {
            QDateTime due(td->dtDue());
            daysTo = due.date().daysTo(date);
            td->setDtDue(due.addDays(daysTo), true);
            haveOffset = true;
        }
        if(td->hasStartDate())
        {
            QDateTime start(td->dtStart());
            if(!haveOffset)
                daysTo = start.date().daysTo(date);
            td->setDtStart(start.addDays(daysTo));
            haveOffset = true;
        }
    }
    recur = incidence->recurrence();
    if(recur)
    {
        if(single)
        {
            recur->addExDate(date);
        }
        else
        {
            // Make sure the recurrence of the past events ends
            // at the corresponding day
            recur->setEndDate(date.addDays(-1));
        }
    }
    return newInc;
}

void KOWhatsNextView::updateView()
{
  KIconLoader kil("kdepim");
  QString *ipath = new QString();
  kil.loadIcon("kdepim",KIcon::NoGroup,32,KIcon::DefaultState,ipath);

  mText = "<table width=\"100%\">\n";
  mText += "<tr bgcolor=\"#3679AD\"><td><h1>";
  mText += "<img src=\"";
  mText += *ipath;
  mText += "\">";
  mText += "<font color=\"white\"> ";
  mText += i18n("What's Next?") + "</font></h1>";
  mText += "</td></tr>\n<tr><td>";

  mText += "<h2>";
  if ( mStartDate.daysTo( mEndDate ) < 1 ) {
    mText += KGlobal::locale()->formatDate( mStartDate );
  } else {
    mText += i18n("Date from - to", "%1 - %2")
            .arg( KGlobal::locale()->formatDate( mStartDate ) )
            .arg( KGlobal::locale()->formatDate( mEndDate ) );
  }
  mText+="</h2>\n";

  Event::List events;
  for ( QDate date = mStartDate; date <= mEndDate; date = date.addDays( 1 ) )
    events += calendar()->events(date, EventSortStartDate, SortDirectionAscending);

  if (events.count() > 0) {
    mText += "<p></p>";
    kil.loadIcon("appointment",KIcon::NoGroup,22,KIcon::DefaultState,ipath);
    mText += "<h2><img src=\"";
    mText += *ipath;
    mText += "\">";
    mText += i18n("Events:") + "</h2>\n";
    mText += "<table>\n";
    Event::List::ConstIterator it;
    for( it = events.begin(); it != events.end(); ++it ) {
      Event *ev = *it;
      if ( !ev->doesRecur() ){
        appendEvent(ev);
      } else {
        // FIXME: This should actually be cleaned up. Libkcal should
        // provide a method to return a list of all recurrences in a
        // given time span.
        Recurrence *recur = ev->recurrence();
        int duration = ev->dtStart().secsTo( ev->dtEnd() );
        QDateTime start = recur->getPreviousDateTime(
                                QDateTime( mStartDate, QTime() ) );
        QDateTime end = start.addSecs( duration );
        if ( end.date() >= mStartDate ) {
          appendEvent( ev, start, end );
        }
        start = recur->getNextDateTime( start );
        while ( start.isValid() && start.date() <= mEndDate ) {
          appendEvent( ev, start );
          start = recur->getNextDateTime( start );
        }
      }
    }
    mText += "</table>\n";
  }

  mTodos.clear();
  Todo::List todos = calendar()->todos( TodoSortDueDate, SortDirectionAscending );
  if ( todos.count() > 0 ) {
    kil.loadIcon("todo",KIcon::NoGroup,22,KIcon::DefaultState,ipath);
    mText += "<h2><img src=\"";
    mText += *ipath;
    mText += "\">";
    mText += i18n("To-do:") + "</h2>\n";
    mText += "<ul>\n";
    Todo::List::ConstIterator it;
    for( it = todos.begin(); it != todos.end(); ++it ) {
      Todo *todo = *it;
      if ( !todo->isCompleted() && todo->hasDueDate() && todo->dtDue().date() <= mEndDate )
                  appendTodo(todo);
    }
    bool gotone = false;
    int priority = 1;
    while (!gotone && priority<=9 ) {
      for( it = todos.begin(); it != todos.end(); ++it ) {
        Todo *todo = *it;
        if (!todo->isCompleted() && (todo->priority() == priority) ) {
          appendTodo(todo);
          gotone = true;
        }
      }
      priority++;
      kdDebug(5850) << "adding the todos..." << endl;
    }
    mText += "</ul>\n";
  }

  QStringList myEmails( KOPrefs::instance()->allEmails() );
  int replies = 0;
  events = calendar()->events( QDate::currentDate(), QDate(2975,12,6) );
  Event::List::ConstIterator it2;
  for( it2 = events.begin(); it2 != events.end(); ++it2 ) {
//.........这里部分代码省略.........