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Gui: improved TreeView drag and drop

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* support undo of drag and drop
* support drop only (i.e. no item removal from dragged parent item) when
    Ctrl key is pressed at the time of drop.
This commit is contained in:
Zheng, Lei
2017-03-15 11:23:28 +08:00
committed by wmayer
parent b95674db03
commit 535762ea4f
1 changed files with 11 additions and 9 deletions
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20
src/Gui/Tree.cpp
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@@ -604,26 +604,28 @@ void TreeWidget::dropEvent(QDropEvent *event)
return; // no group like object
}
std::vector<const App::DocumentObject*> dropObjects;
dropObjects.reserve(idxs.size());
bool dropOnly = QApplication::keyboardModifiers()== Qt::ControlModifier;
// Open command
Gui::Document* gui = vp->getDocument();
gui->openCommand("Drag object");
for (QList<QTreeWidgetItem*>::Iterator it = items.begin(); it != items.end(); ++it) {
Gui::ViewProviderDocumentObject* vpc = static_cast<DocumentObjectItem*>(*it)->object();
App::DocumentObject* obj = vpc->getObject();
dropObjects.push_back(obj);
// does this have a parent object
QTreeWidgetItem* parent = (*it)->parent();
if (parent && parent->type() == TreeWidget::ObjectType) {
Gui::ViewProvider* vpp = static_cast<DocumentObjectItem *>(parent)->object();
vpp->dragObject(obj);
if(!dropOnly) {
// does this have a parent object
QTreeWidgetItem* parent = (*it)->parent();
if (parent && parent->type() == TreeWidget::ObjectType) {
Gui::ViewProvider* vpp = static_cast<DocumentObjectItem *>(parent)->object();
vpp->dragObject(obj);
}
}
// now add the object to the target object
vp->dropObject(obj);
}
gui->commitCommand();
}
else if (targetitem->type() == TreeWidget::DocumentType) {
// Open command