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Handle the previous prohibition for drag and drop
Alexandre Leroux -
r1023:1b1ede101ec5
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@@ -25,6 +25,8 signals:
25 25 public:
26 26 enum class DropBehavior { Inserted, Merged, InsertedAndMerged, Forbidden };
27 27 using AcceptMimeDataFunction = std::function<bool(const QMimeData *mimeData)>;
28 using AcceptDragWidgetFunction
29 = std::function<bool(const VisualizationDragWidget *dragWidget, const QMimeData *mimeData)>;
28 30
29 31 VisualizationDragDropContainer(QWidget *parent = nullptr);
30 32
@@ -37,6 +39,8 public:
37 39
38 40 void setAcceptMimeDataFunction(AcceptMimeDataFunction fun);
39 41
42 void setAcceptDragWidgetFunction(AcceptDragWidgetFunction fun);
43
40 44 void setPlaceHolderType(DragDropHelper::PlaceHolderType type,
41 45 const QString &placeHolderText = QString());
42 46
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@@ -25,6 +25,8 struct VisualizationDragDropContainer::VisualizationDragDropContainerPrivate {
25 25
26 26 VisualizationDragDropContainer::AcceptMimeDataFunction m_AcceptMimeDataFun
27 27 = [](auto mimeData) { return true; };
28 VisualizationDragDropContainer::AcceptDragWidgetFunction m_AcceptDragWidgetFun
29 = [](auto dragWidget, auto mimeData) { return true; };
28 30
29 31 int m_MinContainerHeight = 0;
30 32
@@ -143,8 +145,8 struct VisualizationDragDropContainer::VisualizationDragDropContainerPrivate {
143 145 return nbGraph;
144 146 }
145 147
146 void findPlaceHolderPosition(const QPoint &pos, bool canInsert, bool canMerge,
147 const VisualizationDragDropContainer *container);
148 bool findPlaceHolderPosition(const QPoint &pos, const QMimeData *mimeData, bool canInsert,
149 bool canMerge, const VisualizationDragDropContainer *container);
148 150 };
149 151
150 152 VisualizationDragDropContainer::VisualizationDragDropContainer(QWidget *parent)
@@ -188,6 +190,12 void VisualizationDragDropContainer::setAcceptMimeDataFunction(
188 190 impl->m_AcceptMimeDataFun = fun;
189 191 }
190 192
193 void VisualizationDragDropContainer::setAcceptDragWidgetFunction(
194 VisualizationDragDropContainer::AcceptDragWidgetFunction fun)
195 {
196 impl->m_AcceptDragWidgetFun = fun;
197 }
198
191 199 void VisualizationDragDropContainer::setPlaceHolderType(DragDropHelper::PlaceHolderType type,
192 200 const QString &placeHolderText)
193 201 {
@@ -263,7 +271,10 void VisualizationDragDropContainer::dragEnterEvent(QDragEnterEvent *event)
263 271
264 272 auto canMerge = impl->allowMergeForMimeData(event->mimeData());
265 273 auto canInsert = impl->allowInsertForMimeData(event->mimeData());
266 impl->findPlaceHolderPosition(event->pos(), canInsert, canMerge, this);
274 if (!impl->findPlaceHolderPosition(event->pos(), event->mimeData(), canInsert, canMerge,
275 this)) {
276 event->ignore();
277 }
267 278 }
268 279 else {
269 280 // do nothing
@@ -313,7 +324,7 void VisualizationDragDropContainer::dragMoveEvent(QDragMoveEvent *event)
313 324 if (impl->acceptMimeData(event->mimeData())) {
314 325 auto canMerge = impl->allowMergeForMimeData(event->mimeData());
315 326 auto canInsert = impl->allowInsertForMimeData(event->mimeData());
316 impl->findPlaceHolderPosition(event->pos(), canInsert, canMerge, this);
327 impl->findPlaceHolderPosition(event->pos(), event->mimeData(), canInsert, canMerge, this);
317 328 }
318 329 else {
319 330 event->ignore();
@@ -387,8 +398,8 void VisualizationDragDropContainer::dropEvent(QDropEvent *event)
387 398 }
388 399
389 400
390 void VisualizationDragDropContainer::VisualizationDragDropContainerPrivate::findPlaceHolderPosition(
391 const QPoint &pos, bool canInsert, bool canMerge,
401 bool VisualizationDragDropContainer::VisualizationDragDropContainerPrivate::findPlaceHolderPosition(
402 const QPoint &pos, const QMimeData *mimeData, bool canInsert, bool canMerge,
392 403 const VisualizationDragDropContainer *container)
393 404 {
394 405 auto &helper = sqpApp->dragDropHelper();
@@ -451,7 +462,13 void VisualizationDragDropContainer::VisualizationDragDropContainerPrivate::find
451 462 helper.removePlaceHolder();
452 463 }
453 464
454 helper.setHightlightedDragWidget(dragWidgetHovered);
465 if (m_AcceptDragWidgetFun(dragWidgetHovered, mimeData)) {
466 helper.setHightlightedDragWidget(dragWidgetHovered);
467 return true;
468 }
469 else {
470 return false;
471 }
455 472 }
456 473 else {
457 474 qCWarning(LOG_VisualizationDragDropContainer())
@@ -470,4 +487,6 void VisualizationDragDropContainer::VisualizationDragDropContainerPrivate::find
470 487 // the mouse is hover the placeHolder
471 488 // Do nothing
472 489 }
490
491 return true;
473 492 }
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@@ -115,6 +115,29 VisualizationZoneWidget::VisualizationZoneWidget(const QString &name, QWidget *p
115 115 ui->dragDropContainer);
116 116 });
117 117
118 auto acceptDragWidgetFun = [](auto dragWidget, auto mimeData) {
119 if (!mimeData) {
120 return false;
121 }
122
123 if (mimeData->hasFormat(MIME_TYPE_VARIABLE_LIST)) {
124 auto variables = sqpApp->variableController().variablesForMimeData(
125 mimeData->data(MIME_TYPE_VARIABLE_LIST));
126
127 if (variables.count() != 1) {
128 return false;
129 }
130 auto variable = variables.first();
131
132 if (auto graphWidget = dynamic_cast<const VisualizationGraphWidget *>(dragWidget)) {
133 return graphWidget->canDrop(*variable);
134 }
135 }
136
137 return true;
138 };
139 ui->dragDropContainer->setAcceptDragWidgetFunction(acceptDragWidgetFun);
140
118 141 connect(ui->dragDropContainer, &VisualizationDragDropContainer::dropOccuredInContainer, this,
119 142 &VisualizationZoneWidget::dropMimeData);
120 143 connect(ui->dragDropContainer, &VisualizationDragDropContainer::dropOccuredOnWidget, this,
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