Fix #1035 by checking for exceptions when accessing config

[pulseview.git] / pv / prop / bool.cpp

diff --git a/pv/prop/bool.cpp b/pv/prop/bool.cpp
index 0dd1c50f10698702a2397ea604b27d6c285ab230..0cd1604612661730348acd099580f7ac02947725 100644 (file)
--- a/pv/prop/bool.cpp
+++ b/pv/prop/bool.cpp
@@ -20,6 +20,9 @@
 #include <cassert>
 
 #include <QCheckBox>
+#include <QDebug>
+
+#include <libsigrokcxx/libsigrokcxx.hpp>
 
 #include "bool.hpp"
 
@@ -40,16 +43,19 @@ QWidget* Bool::get_widget(QWidget *parent, bool auto_commit)
        if (!getter_)
                return nullptr;
 
-       Glib::VariantBase variant = getter_();
-       if (!variant.gobj())
+       try {
+               Glib::VariantBase variant = getter_();
+               if (!variant.gobj())
+                       return nullptr;
+       } catch (const sigrok::Error &e) {
+               qWarning() << tr("Querying config key %1 resulted in %2").arg(name_, e.what());
                return nullptr;
-
-       bool value = Glib::VariantBase::cast_dynamic<Glib::Variant<bool>>(
-               variant).get();
+       }
 
        check_box_ = new QCheckBox(name(), parent);
        check_box_->setToolTip(desc());
-       check_box_->setCheckState(value ? Qt::Checked : Qt::Unchecked);
+
+       update_widget();
 
        if (auto_commit)
                connect(check_box_, SIGNAL(stateChanged(int)),
@@ -63,6 +69,27 @@ bool Bool::labeled_widget() const
        return true;
 }
 
+void Bool::update_widget()
+{
+       if (!check_box_)
+               return;
+
+       Glib::VariantBase variant;
+
+       try {
+               variant = getter_();
+       } catch (const sigrok::Error &e) {
+               qWarning() << tr("Querying config key %1 resulted in %2").arg(name_, e.what());
+               return;
+       }
+
+       assert(variant.gobj());
+       bool value = Glib::VariantBase::cast_dynamic<Glib::Variant<bool>>(
+               variant).get();
+
+       check_box_->setCheckState(value ? Qt::Checked : Qt::Unchecked);
+}
+
 void Bool::commit()
 {
        assert(setter_);
@@ -70,8 +97,7 @@ void Bool::commit()
        if (!check_box_)
                return;
 
-       setter_(Glib::Variant<bool>::create(
-               check_box_->checkState() == Qt::Checked));
+       setter_(Glib::Variant<bool>::create(check_box_->checkState() == Qt::Checked));
 }
 
 void Bool::on_state_changed(int)