Allow selection of multiple MoCap files at once

include/moCapSelectionWidget.h

@@ -29,6 +29,7 @@ public:
     ~MoCapSelectionWidget() override;
 
     void                setFileName();
+    void                setFileName(QString filename);
     MoCapPersonMetadata getMetadata() const;
 
     bool isFilledOut() const;

src/moCapSelectionWidget.cpp

@@ -21,7 +21,7 @@ MoCapSelectionWidget::MoCapSelectionWidget(QWidget *parent, const QMap<QString,
     mUi->offSetSpinBox->setRange(-offsetRange, offsetRange);
     mUi->offSetSpinBox->setSingleStep(0.01);
 
-    connect(mUi->browseFileButton, &QPushButton::clicked, this, &MoCapSelectionWidget::setFileName);
+    connect(mUi->browseFileButton, &QPushButton::clicked, this, QOverload<>::of(&MoCapSelectionWidget::setFileName));
     connect(mUi->btnDelete, &QPushButton::clicked, this, &MoCapSelectionWidget::deleteLater);
 }
 
@@ -69,6 +69,20 @@ void MoCapSelectionWidget::setFileName()
     extensionsString << ")";
     QString filename = QFileDialog::getOpenFileName(
         this, tr("Open C3D File"), QDir::currentPath(), QString::fromStdString(extensionsString.str()));
+    setFileName(filename);
+}
+
+/**
+ * @brief Sets the filename to the given string
+ *
+ * Sets filePathLabel. Also sets mFilledOut to true if
+ * a file was selected, i.e. name != "" or false if
+ * name == ""
+ *
+ * @param filename name of MoCap-file
+ */
+void MoCapSelectionWidget::setFileName(QString filename)
+{
     mUi->filePathLabel->clear();
     mUi->filePathLabel->setText(filename);
     mFilledOut = !filename.isEmpty();

src/openMoCapDialog.cpp

@@ -105,5 +105,19 @@ OpenMoCapDialog::~OpenMoCapDialog()
 
 void OpenMoCapDialog::on_btnAddSelection_clicked()
 {
-    mUi->moCapSelections->layout()->addWidget(new MoCapSelectionWidget(this, mMoCapSystems));
+    std::stringstream extensions;
+    extensions << "All MoCap File Types (";
+    for(const auto &extension : moCapFileExtensions)
+    {
+        extensions << " *." << extension.second;
+    }
+    extensions << ")";
+    auto selectedFiles = QFileDialog::getOpenFileNames(
+        this, tr("Open C3D File"), QDir::currentPath(), QString::fromStdString(extensions.str()));
+    for(const auto &file : selectedFiles)
+    {
+        MoCapSelectionWidget *widget = new MoCapSelectionWidget(this, mMoCapSystems);
+        widget->setFileName(file);
+        mUi->moCapSelections->layout()->addWidget(widget);
+    }
 }