C++ Todo::clone方法代码示例

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::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;
  }
}

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 KOTodoListView::contentsDropEvent( QDropEvent *e )
{
#ifndef KORG_NODND
  kdDebug(5850) << "KOTodoListView::contentsDropEvent" << endl;

  if ( !mCalendar || !mChanger ||
       ( !ICalDrag::canDecode( e ) && !VCalDrag::canDecode( e ) &&
         !QTextDrag::canDecode( e ) ) ) {
    e->ignore();
    return;
  }

  DndFactory factory( mCalendar );
  Todo *todo = factory.createDropTodo(e);

  if ( todo ) {
    e->acceptAction();

    KOTodoViewItem *destination =
        (KOTodoViewItem *)itemAt(contentsToViewport(e->pos()));
    Todo *destinationEvent = 0;
    if (destination) destinationEvent = destination->todo();

    Todo *existingTodo = mCalendar->todo(todo->uid());

    if( existingTodo ) {
       kdDebug(5850) << "Drop existing Todo " << existingTodo << " onto " << destinationEvent << endl;
      Incidence *to = destinationEvent;
      while(to) {
        if (to->uid() == todo->uid()) {
          KMessageBox::information(this,
              i18n("Cannot move to-do to itself or a child of itself."),
              i18n("Drop To-do"), "NoDropTodoOntoItself" );
          delete todo;
          return;
        }
        to = to->relatedTo();
      }
      Todo*oldTodo = existingTodo->clone();
      if ( mChanger->beginChange( existingTodo ) ) {
        existingTodo->setRelatedTo( destinationEvent );
        mChanger->changeIncidence( oldTodo, existingTodo, KOGlobals::RELATION_MODIFIED );
        mChanger->endChange( existingTodo );
      } else {
        KMessageBox::sorry( this, i18n("Unable to change to-do's parent, "
                            "because the to-do cannot be locked.") );
      }
      delete oldTodo;
      delete todo;
    } else {
//      kdDebug(5850) << "Drop new Todo" << endl;
      todo->setRelatedTo(destinationEvent);
      if ( !mChanger->addIncidence( todo, this ) ) {
        KODialogManager::errorSaveIncidence( this, todo );
        delete todo;
        return;
      }
    }
  }
  else {
    QString text;
    KOTodoViewItem *todoi = dynamic_cast<KOTodoViewItem *>(itemAt( contentsToViewport(e->pos()) ));
    if ( ! todoi ) {
      // Not dropped on a todo item:
      e->ignore();
      kdDebug( 5850 ) << "KOTodoListView::contentsDropEvent(): Not dropped on a todo item" << endl;
      kdDebug( 5850 ) << "TODO: Create a new todo with the given data" << endl;
      // FIXME: Create a new todo with the given text/contact/whatever
    } else if ( QTextDrag::decode(e, text) ) {
      //QListViewItem *qlvi = itemAt( contentsToViewport(e->pos()) );
      kdDebug(5850) << "Dropped : " << text << endl;
      Todo*todo = todoi->todo();
      if( mChanger->beginChange( todo ) ) {
        Todo*oldtodo = todo->clone();

        if( text.startsWith( "file:" ) ) {
          todo->addAttachment( new Attachment( text ) );
        } else {
          QStringList emails = KPIM::splitEmailAddrList( text );
          for(QStringList::ConstIterator it = emails.begin();it!=emails.end();++it) {
            kdDebug(5850) << " Email: " << (*it) << endl;
            int pos = (*it).find("<");
            QString name = (*it).left(pos);
            QString email = (*it).mid(pos);
            if (!email.isEmpty() && todoi) {
              todo->addAttendee( new Attendee( name, email ) );
            }
          }
        }
        mChanger->changeIncidence( oldtodo, todo );
        mChanger->endChange( todo );
      } else {
        KMessageBox::sorry( this, i18n("Unable to add attendees to the to-do, "
            "because the to-do cannot be locked.") );
      }
    }
    else {
      kdDebug(5850) << "KOTodoListView::contentsDropEvent(): Todo from drop not decodable" << endl;
      e->ignore();
    }
//.........这里部分代码省略.........