##// END OF EJS Templates
Handle the previous prohibition for drag and drop
Alexandre Leroux -
r1064:1b1ede101ec5
parent child
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@@ -25,6 +25,8 signals:
25 public:
25 public:
26 enum class DropBehavior { Inserted, Merged, InsertedAndMerged, Forbidden };
26 enum class DropBehavior { Inserted, Merged, InsertedAndMerged, Forbidden };
27 using AcceptMimeDataFunction = std::function<bool(const QMimeData *mimeData)>;
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 VisualizationDragDropContainer(QWidget *parent = nullptr);
31 VisualizationDragDropContainer(QWidget *parent = nullptr);
30
32
@@ -37,6 +39,8 public:
37
39
38 void setAcceptMimeDataFunction(AcceptMimeDataFunction fun);
40 void setAcceptMimeDataFunction(AcceptMimeDataFunction fun);
39
41
42 void setAcceptDragWidgetFunction(AcceptDragWidgetFunction fun);
43
40 void setPlaceHolderType(DragDropHelper::PlaceHolderType type,
44 void setPlaceHolderType(DragDropHelper::PlaceHolderType type,
41 const QString &placeHolderText = QString());
45 const QString &placeHolderText = QString());
42
46
@@ -25,6 +25,8 struct VisualizationDragDropContainer::VisualizationDragDropContainerPrivate {
25
25
26 VisualizationDragDropContainer::AcceptMimeDataFunction m_AcceptMimeDataFun
26 VisualizationDragDropContainer::AcceptMimeDataFunction m_AcceptMimeDataFun
27 = [](auto mimeData) { return true; };
27 = [](auto mimeData) { return true; };
28 VisualizationDragDropContainer::AcceptDragWidgetFunction m_AcceptDragWidgetFun
29 = [](auto dragWidget, auto mimeData) { return true; };
28
30
29 int m_MinContainerHeight = 0;
31 int m_MinContainerHeight = 0;
30
32
@@ -143,8 +145,8 struct VisualizationDragDropContainer::VisualizationDragDropContainerPrivate {
143 return nbGraph;
145 return nbGraph;
144 }
146 }
145
147
146 void findPlaceHolderPosition(const QPoint &pos, bool canInsert, bool canMerge,
148 bool findPlaceHolderPosition(const QPoint &pos, const QMimeData *mimeData, bool canInsert,
147 const VisualizationDragDropContainer *container);
149 bool canMerge, const VisualizationDragDropContainer *container);
148 };
150 };
149
151
150 VisualizationDragDropContainer::VisualizationDragDropContainer(QWidget *parent)
152 VisualizationDragDropContainer::VisualizationDragDropContainer(QWidget *parent)
@@ -188,6 +190,12 void VisualizationDragDropContainer::setAcceptMimeDataFunction(
188 impl->m_AcceptMimeDataFun = fun;
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 void VisualizationDragDropContainer::setPlaceHolderType(DragDropHelper::PlaceHolderType type,
199 void VisualizationDragDropContainer::setPlaceHolderType(DragDropHelper::PlaceHolderType type,
192 const QString &placeHolderText)
200 const QString &placeHolderText)
193 {
201 {
@@ -263,7 +271,10 void VisualizationDragDropContainer::dragEnterEvent(QDragEnterEvent *event)
263
271
264 auto canMerge = impl->allowMergeForMimeData(event->mimeData());
272 auto canMerge = impl->allowMergeForMimeData(event->mimeData());
265 auto canInsert = impl->allowInsertForMimeData(event->mimeData());
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 else {
279 else {
269 // do nothing
280 // do nothing
@@ -313,7 +324,7 void VisualizationDragDropContainer::dragMoveEvent(QDragMoveEvent *event)
313 if (impl->acceptMimeData(event->mimeData())) {
324 if (impl->acceptMimeData(event->mimeData())) {
314 auto canMerge = impl->allowMergeForMimeData(event->mimeData());
325 auto canMerge = impl->allowMergeForMimeData(event->mimeData());
315 auto canInsert = impl->allowInsertForMimeData(event->mimeData());
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 else {
329 else {
319 event->ignore();
330 event->ignore();
@@ -387,8 +398,8 void VisualizationDragDropContainer::dropEvent(QDropEvent *event)
387 }
398 }
388
399
389
400
390 void VisualizationDragDropContainer::VisualizationDragDropContainerPrivate::findPlaceHolderPosition(
401 bool VisualizationDragDropContainer::VisualizationDragDropContainerPrivate::findPlaceHolderPosition(
391 const QPoint &pos, bool canInsert, bool canMerge,
402 const QPoint &pos, const QMimeData *mimeData, bool canInsert, bool canMerge,
392 const VisualizationDragDropContainer *container)
403 const VisualizationDragDropContainer *container)
393 {
404 {
394 auto &helper = sqpApp->dragDropHelper();
405 auto &helper = sqpApp->dragDropHelper();
@@ -451,7 +462,13 void VisualizationDragDropContainer::VisualizationDragDropContainerPrivate::find
451 helper.removePlaceHolder();
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 else {
473 else {
457 qCWarning(LOG_VisualizationDragDropContainer())
474 qCWarning(LOG_VisualizationDragDropContainer())
@@ -470,4 +487,6 void VisualizationDragDropContainer::VisualizationDragDropContainerPrivate::find
470 // the mouse is hover the placeHolder
487 // the mouse is hover the placeHolder
471 // Do nothing
488 // Do nothing
472 }
489 }
490
491 return true;
473 }
492 }
@@ -115,6 +115,29 VisualizationZoneWidget::VisualizationZoneWidget(const QString &name, QWidget *p
115 ui->dragDropContainer);
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 connect(ui->dragDropContainer, &VisualizationDragDropContainer::dropOccuredInContainer, this,
141 connect(ui->dragDropContainer, &VisualizationDragDropContainer::dropOccuredInContainer, this,
119 &VisualizationZoneWidget::dropMimeData);
142 &VisualizationZoneWidget::dropMimeData);
120 connect(ui->dragDropContainer, &VisualizationDragDropContainer::dropOccuredOnWidget, this,
143 connect(ui->dragDropContainer, &VisualizationDragDropContainer::dropOccuredOnWidget, this,
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