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;
}
}
}
bool UIGChooserHandlerKeyboard::handleKeyPress(QKeyEvent *pEvent) const
{
/* Which key it was? */
switch (pEvent->key())
{
/* Key UP? */
case Qt::Key_Up:
{
/* Not during sliding: */
if (model()->isSlidingInProgress())
return false;
/* Determine focus item position: */
int iPosition = model()->navigationList().indexOf(model()->focusItem());
/* Determine 'previous' item: */
UIGChooserItem *pPreviousItem = iPosition > 0 ?
model()->navigationList().at(iPosition - 1) : 0;
if (pPreviousItem)
{
/* Make sure 'previous' item is visible: */
pPreviousItem->makeSureItsVisible();
/* Move focus to 'previous' item: */
model()->setFocusItem(pPreviousItem);
/* Was 'shift' modifier pressed? */
#ifdef Q_WS_MAC
if (pEvent->modifiers() & Qt::ShiftModifier &&
pEvent->modifiers() & Qt::KeypadModifier)
#else /* Q_WS_MAC */
if (pEvent->modifiers() == Qt::ShiftModifier)
#endif /* !Q_WS_MAC */
{
/* Calculate positions: */
UIGChooserItem *pFirstItem = model()->selectionList().first();
int iFirstPosition = model()->navigationList().indexOf(pFirstItem);
int iPreviousPosition = model()->navigationList().indexOf(pPreviousItem);
/* Clear selection: */
model()->clearSelectionList();
/* Select all the items from 'first' to 'previous': */
if (iFirstPosition <= iPreviousPosition)
for (int i = iFirstPosition; i <= iPreviousPosition; ++i)
model()->addToSelectionList(model()->navigationList().at(i));
else
for (int i = iFirstPosition; i >= iPreviousPosition; --i)
model()->addToSelectionList(model()->navigationList().at(i));
}
/* There is no modifiers pressed? */
#ifdef Q_WS_MAC
else if (pEvent->modifiers() == Qt::KeypadModifier)
#else /* Q_WS_MAC */
else if (pEvent->modifiers() == Qt::NoModifier)
#endif /* !Q_WS_MAC */
{
/* Move selection to 'previous' item: */
model()->clearSelectionList();
model()->addToSelectionList(pPreviousItem);
}
/* Notify selection changed: */
model()->notifySelectionChanged();
/* Filter-out this event: */
return true;
}
/* Pass this event: */
return false;
}
/* Key DOWN? */
case Qt::Key_Down:
{
/* Not during sliding: */
if (model()->isSlidingInProgress())
return false;
/* Determine focus item position: */
int iPosition = model()->navigationList().indexOf(model()->focusItem());
/* Determine 'next' item: */
UIGChooserItem *pNextItem = iPosition < model()->navigationList().size() - 1 ?
model()->navigationList().at(iPosition + 1) : 0;
if (pNextItem)
{
/* Make sure 'next' item is visible: */
pNextItem->makeSureItsVisible();
/* Move focus to 'next' item: */
model()->setFocusItem(pNextItem);
/* Was shift modifier pressed? */
#ifdef Q_WS_MAC
if (pEvent->modifiers() & Qt::ShiftModifier &&
pEvent->modifiers() & Qt::KeypadModifier)
#else /* Q_WS_MAC */
if (pEvent->modifiers() == Qt::ShiftModifier)
#endif /* !Q_WS_MAC */
{
/* Calculate positions: */
UIGChooserItem *pFirstItem = model()->selectionList().first();
int iFirstPosition = model()->navigationList().indexOf(pFirstItem);
int iNextPosition = model()->navigationList().indexOf(pNextItem);
/* Clear selection: */
model()->clearSelectionList();
/* Select all the items from 'first' to 'next': */
if (iFirstPosition <= iNextPosition)
for (int i = iFirstPosition; i <= iNextPosition; ++i)
model()->addToSelectionList(model()->navigationList().at(i));
else
for (int i = iFirstPosition; i >= iNextPosition; --i)
model()->addToSelectionList(model()->navigationList().at(i));
}
/* There is no modifiers pressed? */
#ifdef Q_WS_MAC
else if (pEvent->modifiers() == Qt::KeypadModifier)
#else /* Q_WS_MAC */
else if (pEvent->modifiers() == Qt::NoModifier)
#endif /* !Q_WS_MAC */
{
/* Move selection to 'next' item: */
model()->clearSelectionList();
model()->addToSelectionList(pNextItem);
}
/* Notify selection changed: */
model()->notifySelectionChanged();
/* Filter-out this event: */
return true;
}
/* Pass this event: */
return false;
}
/* Key LEFT? */
case Qt::Key_Left:
{
/* If there is a focus item: */
if (UIGChooserItem *pFocusItem = model()->focusItem())
{
/* Of the known type: */
switch (pFocusItem->type())
{
case UIGChooserItemType_Group:
case UIGChooserItemType_Machine:
{
/* Unindent root if its NOT main: */
if (model()->root() != model()->mainRoot())
model()->unindentRoot();
break;
}
default:
break;
}
}
/* Pass that event: */
return false;
}
/* Key RIGHT? */
case Qt::Key_Right:
{
/* If there is focus item: */
if (UIGChooserItem *pFocusItem = model()->focusItem())
{
/* Of the group type: */
if (pFocusItem->type() == UIGChooserItemType_Group)
{
/* Indent root with this item: */
model()->indentRoot(pFocusItem);
}
}
/* Pass that event: */
return false;
}
/* Key F2? */
case Qt::Key_F2:
{
/* If this item is of group type: */
if (model()->focusItem()->type() == UIGChooserItemType_Group)
{
/* Start embedded editing focus item: */
model()->focusItem()->startEditing();
/* Filter that event out: */
return true;
}
/* Pass event to other items: */
return false;
}
case Qt::Key_Return:
case Qt::Key_Enter:
{
/* Activate item: */
model()->activate();
/* And filter out that event: */
return true;
}
case Qt::Key_Space:
{
/* If there is a focus item: */
if (UIGChooserItem *pFocusItem = model()->focusItem())
{
/* Of the group type: */
if (pFocusItem->type() == UIGChooserItemType_Group)
{
/* Toggle that group: */
UIGChooserItemGroup *pGroupItem = pFocusItem->toGroupItem();
if (pGroupItem->closed())
pGroupItem->open();
else
pGroupItem->close();
/* Filter that event out: */
return true;
}
}
/* Pass event to other items: */
return false;
}
default:
break;
}
/* Pass all other events: */
return false;
}
bool UIGChooserHandlerMouse::handleMousePress(QGraphicsSceneMouseEvent *pEvent) const
{
/* Get item under mouse cursor: */
QPointF scenePos = pEvent->scenePos();
if (QGraphicsItem *pItemUnderMouse = model()->itemAt(scenePos))
{
/* Which button it was? */
switch (pEvent->button())
{
/* Left one? */
case Qt::LeftButton:
{
/* Which item we just clicked? */
UIGChooserItem *pClickedItem = 0;
/* Was that a group item? */
if (UIGChooserItemGroup *pGroupItem = qgraphicsitem_cast<UIGChooserItemGroup*>(pItemUnderMouse))
pClickedItem = pGroupItem;
/* Or a machine one? */
else if (UIGChooserItemMachine *pMachineItem = qgraphicsitem_cast<UIGChooserItemMachine*>(pItemUnderMouse))
pClickedItem = pMachineItem;
/* If we had clicked one of required item types: */
if (pClickedItem && !pClickedItem->isRoot())
{
/* Was 'shift' modifier pressed? */
if (pEvent->modifiers() == Qt::ShiftModifier)
{
/* Calculate positions: */
UIGChooserItem *pFirstItem = model()->currentItem();
int iFirstPosition = model()->navigationList().indexOf(pFirstItem);
int iClickedPosition = model()->navigationList().indexOf(pClickedItem);
/* Populate list of items from 'first' to 'clicked': */
QList<UIGChooserItem*> items;
if (iFirstPosition <= iClickedPosition)
for (int i = iFirstPosition; i <= iClickedPosition; ++i)
items << model()->navigationList().at(i);
else
for (int i = iFirstPosition; i >= iClickedPosition; --i)
items << model()->navigationList().at(i);
/* Set that list as current: */
model()->setCurrentItems(items);
/* Move focus to clicked item: */
model()->setFocusItem(pClickedItem);
}
/* Was 'control' modifier pressed? */
else if (pEvent->modifiers() == Qt::ControlModifier)
{
/* Invert selection state for clicked item: */
if (model()->currentItems().contains(pClickedItem))
model()->removeFromCurrentItems(pClickedItem);
else
model()->addToCurrentItems(pClickedItem);
/* Move focus to clicked item: */
model()->setFocusItem(pClickedItem);
}
/* Was no modifiers pressed? */
else if (pEvent->modifiers() == Qt::NoModifier)
{
/* Make clicked item the current one: */
model()->setCurrentItem(pClickedItem);
}
}
break;
}
/* Right one? */
case Qt::RightButton:
{
/* Which item we just clicked? */
UIGChooserItem *pClickedItem = 0;
/* Was that a group item? */
if (UIGChooserItemGroup *pGroupItem = qgraphicsitem_cast<UIGChooserItemGroup*>(pItemUnderMouse))
pClickedItem = pGroupItem;
/* Or a machine one? */
else if (UIGChooserItemMachine *pMachineItem = qgraphicsitem_cast<UIGChooserItemMachine*>(pItemUnderMouse))
pClickedItem = pMachineItem;
/* If we had clicked one of required item types: */
if (pClickedItem && !pClickedItem->isRoot())
{
/* Select clicked item if not selected yet: */
if (!model()->currentItems().contains(pClickedItem))
model()->setCurrentItem(pClickedItem);
}
break;
}
default:
break;
}
}
/* Pass all other events: */
return false;
}
bool UIGChooserHandlerMouse::handleMousePress(QGraphicsSceneMouseEvent *pEvent) const
{
/* Get item under mouse cursor: */
QPointF scenePos = pEvent->scenePos();
if (QGraphicsItem *pItemUnderMouse = model()->itemAt(scenePos))
{
/* Which button it was? */
switch (pEvent->button())
{
/* Left one? */
case Qt::LeftButton:
{
/* Which item we just clicked? */
UIGChooserItem *pClickedItem = 0;
/* Was that a group item? */
if (UIGChooserItemGroup *pGroupItem = qgraphicsitem_cast<UIGChooserItemGroup*>(pItemUnderMouse))
pClickedItem = pGroupItem;
/* Or a machine one? */
else if (UIGChooserItemMachine *pMachineItem = qgraphicsitem_cast<UIGChooserItemMachine*>(pItemUnderMouse))
pClickedItem = pMachineItem;
/* If we had clicked one of the required item types: */
if (pClickedItem && !pClickedItem->isRoot())
{
/* Old selection list: */
QList<UIGChooserItem*> oldSelectionList = model()->selectionList();
/* Move focus to clicked item: */
model()->setFocusItem(pClickedItem);
/* Was 'shift' modifier pressed? */
if (pEvent->modifiers() == Qt::ShiftModifier)
{
/* Calculate positions: */
UIGChooserItem *pFirstItem = model()->selectionList().first();
int iFirstPosition = model()->navigationList().indexOf(pFirstItem);
int iClickedPosition = model()->navigationList().indexOf(pClickedItem);
/* Clear selection: */
model()->clearSelectionList();
/* Select all the items from 'first' to 'clicked': */
if (iFirstPosition <= iClickedPosition)
for (int i = iFirstPosition; i <= iClickedPosition; ++i)
model()->addToSelectionList(model()->navigationList().at(i));
else
for (int i = iFirstPosition; i >= iClickedPosition; --i)
model()->addToSelectionList(model()->navigationList().at(i));
}
/* Was 'control' modifier pressed? */
else if (pEvent->modifiers() == Qt::ControlModifier)
{
/* Select clicked item, inverting if necessary: */
if (model()->selectionList().contains(pClickedItem))
model()->removeFromSelectionList(pClickedItem);
else
model()->addToSelectionList(pClickedItem);
}
/* Was no modifiers pressed? */
else if (pEvent->modifiers() == Qt::NoModifier)
{
/* Move selection to clicked item: */
model()->clearSelectionList();
model()->addToSelectionList(pClickedItem);
}
/* Selection list changed?: */
if (oldSelectionList != model()->selectionList())
model()->notifySelectionChanged();
}
break;
}
/* Right one? */
case Qt::RightButton:
{
/* Which item we just clicked? */
UIGChooserItem *pClickedItem = 0;
/* Was that a group item? */
if (UIGChooserItemGroup *pGroupItem = qgraphicsitem_cast<UIGChooserItemGroup*>(pItemUnderMouse))
pClickedItem = pGroupItem;
/* Or a machine one? */
else if (UIGChooserItemMachine *pMachineItem = qgraphicsitem_cast<UIGChooserItemMachine*>(pItemUnderMouse))
pClickedItem = pMachineItem;
/* If we had clicked one of the required item types: */
if (pClickedItem)
{
/* For non-root items: */
if (!pClickedItem->isRoot())
{
/* Is clicked item in selection list: */
bool fIsClickedItemInSelectionList = contains(model()->selectionList(), pClickedItem);
/* Move focus to clicked item (with selection if not selected yet): */
model()->setFocusItem(pClickedItem, !fIsClickedItemInSelectionList);
}
}
break;
}
default:
break;
}
}
/* Pass all other events: */
return false;
}
