bool UIGChooserItemMachine::isDropAllowed(QGraphicsSceneDragDropEvent *pEvent, DragToken where) const
{
/* No drops while saving groups: */
if (model()->isGroupSavingInProgress())
return false;
/* No drops for immutable item: */
if (isLockedMachine())
return false;
/* Get mime: */
const QMimeData *pMimeData = pEvent->mimeData();
/* If drag token is shown, its up to parent to decide: */
if (where != DragToken_Off)
return parentItem()->isDropAllowed(pEvent);
/* Else we should make sure machine is accessible: */
if (!accessible())
return false;
/* Else we should try to cast mime to known classes: */
if (pMimeData->hasFormat(UIGChooserItemMachine::className()))
{
/* Make sure passed item id is not ours: */
const UIGChooserItemMimeData *pCastedMimeData = qobject_cast<const UIGChooserItemMimeData*>(pMimeData);
AssertMsg(pCastedMimeData, ("Can't cast passed mime-data to UIGChooserItemMimeData!"));
UIGChooserItem *pItem = pCastedMimeData->item();
UIGChooserItemMachine *pMachineItem = pItem->toMachineItem();
/* Make sure passed machine is mutable: */
if (pMachineItem->isLockedMachine())
return false;
return pMachineItem->id() != id();
}
/* That was invalid mime: */
return false;
}
void UIGChooserItemMachine::processDrop(QGraphicsSceneDragDropEvent *pEvent, UIGChooserItem *pFromWho, DragToken where)
{
/* Get mime: */
const QMimeData *pMime = pEvent->mimeData();
/* Make sure this handler called by this item (not by children): */
AssertMsg(!pFromWho && where == DragToken_Off, ("Machine graphics item do NOT support children!"));
Q_UNUSED(pFromWho);
Q_UNUSED(where);
if (pMime->hasFormat(UIGChooserItemMachine::className()))
{
switch (pEvent->proposedAction())
{
case Qt::MoveAction:
case Qt::CopyAction:
{
/* Remember scene: */
UIGChooserModel *pModel = model();
/* Get passed item: */
const UIGChooserItemMimeData *pCastedMime = qobject_cast<const UIGChooserItemMimeData*>(pMime);
AssertMsg(pCastedMime, ("Can't cast passed mime-data to UIGChooserItemMimeData!"));
UIGChooserItem *pItem = pCastedMime->item();
/* Group passed item with current item into the new group: */
UIGChooserItemGroup *pNewGroupItem = new UIGChooserItemGroup(parentItem(),
model()->uniqueGroupName(parentItem()),
true);
new UIGChooserItemMachine(pNewGroupItem, this);
new UIGChooserItemMachine(pNewGroupItem, pItem->toMachineItem());
/* If proposed action is 'move': */
if (pEvent->proposedAction() == Qt::MoveAction)
{
/* Delete passed item: */
delete pItem;
}
/* Delete this item: */
delete this;
/* Update model: */
pModel->updateGroupTree();
pModel->updateNavigation();
pModel->updateLayout();
pModel->setCurrentItem(pNewGroupItem);
pModel->saveGroupSettings();
break;
}
default:
break;
}
}
}