Drag'n'Drop: GroupView now prevents parent items from being moved into their own child items.

git-svn-id: https://svn.code.sf.net/p/keepassx/code/trunk@18 b624d157-de02-0410-bad0-e51aec6abb33

src/PwManager.cpp

@@ -909,6 +909,19 @@ for(int i=0;i<Entries.size();i++)
 return false;
 }
 
+bool PwDatabase::isParentGroup(CGroup* child, CGroup* parent){
+if(child==parent)return true;	//maybe a bad idea
+int ChildIndex=getGroupIndex(child->ID);
+int ParentIndex=getGroupIndex(parent->ID);
+if(ParentIndex > ChildIndex) return false;
+
+for(int i=ChildIndex; i>ParentIndex;i--){
+  if(Groups[i].Level<=parent->Level)return false;
+}
+
+return true;
+}
+
 
 Q_UINT32 PwDatabase::getNewGroupId(){
 Q_UINT32 id;

src/PwManager.h

@@ -62,6 +62,7 @@ public:
  void      moveEntry(CEntry* pEntry,CGroup* pDstGroup);
  CEntry*   addEntry();
  void 	   merge(PwDatabase* db2);
+ bool	   isParentGroup(CGroup* Group,CGroup* PotenialParent);
  QString   getError();  //get first error
  QString   getErrors(); //get all errors in a \n seperated String
 

src/lib/GroupView.cpp

@@ -53,11 +53,17 @@ if(LastHoverItem){
   f.setBold(false);
   LastHoverItem->setFont(0,f);
 }
+
 if(item){
+ if(!db->isParentGroup(item->pGroup,DragItem->pGroup) && DragItem!=item){
    QFont f=item->font(0);
    f.setBold(true);
    item->setFont(0,f);
-  LastHoverItem=item;}
+   LastHoverItem=item;
+   event->setAccepted(true);}
+ else 
+   event->setAccepted(false);
+ }
 else{
   LastHoverItem=NULL;}
 
@@ -96,22 +102,21 @@ void KeepassGroupView::mouseMoveEvent(QMouseEvent *event){
             return;
  if ((event->pos() - DragStartPos).manhattanLength() < QApplication::startDragDistance())
             return;
-
-	GroupViewItem* item=(GroupViewItem*)itemAt(DragStartPos);
-	if(!item)return;
+	DragItem=(GroupViewItem*)itemAt(DragStartPos);
+	if(!DragItem)return;
 	QDrag *drag = new QDrag(this);
-	QFontMetrics fontmet(item->font(0));
+	QFontMetrics fontmet(DragItem->font(0));
 	int DragPixmHeight=16;
 	if(fontmet.height()>16)DragPixmHeight=fontmet.height();
-	DragPixmap  = QPixmap(fontmet.width(item->text(0))+19,DragPixmHeight);
+	DragPixmap  = QPixmap(fontmet.width(DragItem->text(0))+19,DragPixmHeight);
 	DragPixmap.fill(QColor(255,255,255));
 	QPainter painter(&DragPixmap);
 	painter.setPen(QColor(0,0,0));
-	painter.setFont(item->font(0));
-	painter.drawPixmap(0,0,item->icon(0).pixmap());
-	painter.drawText(19,DragPixmHeight-fontmet.strikeOutPos(),item->text(0));	
+	painter.setFont(DragItem->font(0));
+	painter.drawPixmap(0,0,DragItem->icon(0).pixmap());
+	painter.drawText(19,DragPixmHeight-fontmet.strikeOutPos(),DragItem->text(0));	
         QMimeData *mimeData = new QMimeData;
-	mimeData->setData("keepass/group",QByteArray((char*)&(item->pGroup),sizeof(void*)));
+	mimeData->setData("keepass/group",QByteArray((char*)&(DragItem->pGroup),sizeof(void*)));
         drag->setMimeData(mimeData);
         drag->setPixmap(DragPixmap);
 	drag->start();

src/lib/GroupView.h

@@ -43,6 +43,7 @@ protected:
 private:
  QPoint DragStartPos;
  QPixmap DragPixmap;
+ GroupViewItem* DragItem;
  GroupViewItem* LastHoverItem;
  GroupViewItem* getLastSameLevelItem(int level);
 };