How to send signal when tree item is clicked.

[summit]

I am promoting a QWidget to a custom tree model which is derived from the QAbstractItemModel.

Since i am promoting a QWidget , so i do not have the tree item clicked signal in the model.

In order to provide the tree item clicked signal i am emitting the item selected signal from the tree item .

In the tree item class which is derived from QObject , i am creating the signal.

Signal
void channelSelected(SumChannel* channel);

bool StageItem::selectChannel() {
		if (m_dataType != DirectorDataType && m_dataType != ContainerDataType) {
			auto channel = m_data.value<SumPosition_Channel*>();
			emit channelSelected(channel);
			return true;
		}
		else {
			return false;
		}
	}

In the tree model class i am creating the the clicked signal.

Signal
void channelDeleted(SumChannel* channel);

Than i am linking it to the tree item clicked signal.

connect(m_rootItem, &StageItem::channelSelected, this, &StageModel::channelSelected);

This is how i am emitting the signal from the tree model.

QVariant StageModel::data(const QModelIndex &index, int role) const
	{
		if (!index.isValid())
			return QVariant();

		auto *item = getItem(index);

		switch (role) {
		case Qt::UserRole:
			return item->data();
		case Qt::DisplayRole:
			switch (index.column()) {
			case StageItem::TreeColumnIndex:
				if (item->dataType() != StageItem::DirectorDataType && item->dataType() != StageItem::ContainerDataType)
					item->selectChannel();
				
				return item->name();
			}
	
		default:
			return QVariant();
		}
	}

This signal does gets fired even when i create a new tree item or the mouse hovers over it.

How can i truly get a tree item clicked kind of signal ?

[Christian Ehrlicher]

@summit said in How to send signal when tree item is clicked.:

Since i am promoting a QWidget , so i do not have the tree item clicked signal in the model.

Can you please elaborate this? How do you use a model with a plain widget?

[summit]

@Christian-Ehrlicher i am promoting the widget to timelineview.cpp and in the timelineview.cpp i have this function.

void StageTimelineView::setModel(models::StageModel *stageModel)
	{
		if (m_model) {
			disconnect(m_model, &QAbstractItemModel::rowsInserted, this, &StageTimelineView::onRowsInserted);
		}
		m_model = stageModel;
		m_view->setModel(m_model);
		m_header->setSectionResizeMode(0, QHeaderView::Interactive);
		m_header->setSectionResizeMode(1, QHeaderView::Stretch);

		connect(m_model, &QAbstractItemModel::rowsInserted, this, &StageTimelineView::onRowsInserted);
	}

[Christian Ehrlicher]

@summit said in How to send signal when tree item is clicked.:

i am promoting the widget to timelineview.cpp

Sorry but I don't understand what you're writing here.

QTreeView (or better it's base class QAbstractItemView) has enough signals to get notified when an item is clicked.