iioExplorer: Add iio_context pointer to IIOStandardItem.

Store iio_context on context and context-attribute items so that
CliDetailsView can query libiio directly without depending on
IIOWidget data strategies. Guard connectLog against empty widget
lists to support eagerly created attribute items.

Signed-off-by: andreidanila1 <andrei.danila@analog.com>

Author: andreidanila1

packages/generic-plugins/plugins/debugger/include/debugger/iiostandarditem.h

@@ -105,6 +105,9 @@ class IIOStandardItem : public QObject, public QStandardItem
 	bool childrenLoaded() const;
 	void setChildrenLoaded(bool loaded);
 
+	struct iio_context *context() const;
+	void setContext(struct iio_context *ctx);
+
 	struct iio_device *device() const;
 	struct iio_channel *channel() const;
 
@@ -127,6 +130,7 @@ protected Q_SLOTS:
 	void extractDataFromDevice();
 	void extractDataFromChannel();
 
+	struct iio_context *m_context;
 	struct iio_device *m_device;
 	struct iio_channel *m_channel;
 	QList<IIOWidget *> m_iioWidgets;

packages/generic-plugins/plugins/debugger/src/iioexplorer/iiostandarditem.cpp

@@ -26,6 +26,7 @@ using namespace scopy::debugger;
 
 IIOStandardItem::IIOStandardItem(QList<IIOWidget *> widgets, QString name, QString path, IIOStandardItem::Type type)
 	: QStandardItem(name)
+	, m_context(nullptr)
 	, m_device(nullptr)
 	, m_channel(nullptr)
 	, m_iioWidgets(widgets)
@@ -48,6 +49,7 @@ IIOStandardItem::IIOStandardItem(QList<IIOWidget *> widgets, QString name, QStri
 
 IIOStandardItem::IIOStandardItem(QList<IIOWidget *> widgets, QString name, QString id, QString path, Type type)
 	: QStandardItem((!name.isEmpty()) ? id + ": " + name : id)
+	, m_context(nullptr)
 	, m_device(nullptr)
 	, m_channel(nullptr)
 	, m_iioWidgets(widgets)
@@ -167,7 +169,10 @@ void IIOStandardItem::connectLog()
 		return;
 	}
 
-	// this is leaf iio widget, it can probably read/write
+	if(m_iioWidgets.isEmpty()) {
+		return;
+	}
+
 	IIOWidget *widget = m_iioWidgets.at(0);
 
 	connect(dynamic_cast<QObject *>(widget->getDataStrategy()),
@@ -280,6 +285,10 @@ bool IIOStandardItem::childrenLoaded() const { return m_childrenLoaded; }
 
 void IIOStandardItem::setChildrenLoaded(bool loaded) { m_childrenLoaded = loaded; }
 
+struct iio_context *IIOStandardItem::context() const { return m_context; }
+
+void IIOStandardItem::setContext(struct iio_context *ctx) { m_context = ctx; }
+
 struct iio_device *IIOStandardItem::device() const { return m_device; }
 
 struct iio_channel *IIOStandardItem::channel() const { return m_channel; }
@@ -290,6 +299,7 @@ void IIOStandardItem::setIIOWidgets(QList<IIOWidget *> widgets)
 	for(IIOWidget *w : qAsConst(m_iioWidgets)) {
 		w->hide();
 	}
+	connectLog();
 }
 
 #include "moc_iiostandarditem.cpp"