Bugfixes: don't select dirs and don't crash on write settings

Only select files when archiving pics from filemanager. While at it, I
noticed a crash on close when no item is selected in PicturesWidget. So
check if MappingData is valid on writing settings. Best way is
MappingData::isValid(), and for that I needed a explicit constructor.

5 files changed, 15 insertions, 6 deletions

diff --git a/mappingtreemodel.cpp b/mappingtreemodel.cpp
index 2c636e6..80085c3 100644
--- a/mappingtreemodel.cpp
+++ b/mappingtreemodel.cpp
@@ -305,7 +305,7 @@ bool MappingTreeModel::deleteChild(const QModelIndex &idx){
 }
 
 MappingData MappingTreeModel::mappingDataFromIndex(QModelIndex &idx) const{
-    MappingData retval = { -1, -1, -1, QString(), QList<QStringList>() };
+    MappingData retval;
     if(!idx.isValid()){
         return retval;
     }
@@ -579,3 +579,9 @@ QList<QVariant> MappingTreeResultModel::columnValuesRecursive(SmTreeItem *parent
     }
     return retval;
 }
+
+MappingData::MappingData() : mappingId(-1), parentId(-1), myId(-1) {}
+
+bool MappingData::isValid(){
+    return !(mappingId == -1 && parentId == -1 && myId == -1);
+}
diff --git a/mappingtreemodel.h b/mappingtreemodel.h
index a4a1ae8..fa91a78 100644
--- a/mappingtreemodel.h
+++ b/mappingtreemodel.h
@@ -117,6 +117,8 @@ class MappingTreeResultModel : public SmTreeModel {
 };
 
 struct MappingData {
+    MappingData();
+    bool isValid();
     int mappingId;
     int parentId;
     int myId;
diff --git a/mappingtreewidget.cpp b/mappingtreewidget.cpp
index e9d0c93..fd3ebe6 100644
--- a/mappingtreewidget.cpp
+++ b/mappingtreewidget.cpp
@@ -94,13 +94,12 @@ MappingTreeWidget::MappingTreeWidget(QWidget *parent) : QWidget(parent){
 }
 
 MappingData MappingTreeWidget::selectedItem() const {
-    MappingData retval = { -1, -1, -1, QString(), QList<QStringList>() };
     QModelIndex sel = selected();
     if(!sel.isValid()){
-        return retval;
+        return MappingData();
     }
     QModelIndex real = mProxy->mapToSource(sel);
-        return mModel->mappingDataFromIndex(real);
+    return mModel->mappingDataFromIndex(real);
 }
 
 void MappingTreeWidget::addChild(){
diff --git a/newpicsdialog.cpp b/newpicsdialog.cpp
index 0ededef..272bf2d 100644
--- a/newpicsdialog.cpp
+++ b/newpicsdialog.cpp
@@ -272,7 +272,7 @@ void NewPicFilesModel::setFiles(const QStringList &paths) {
 
 void NewPicFilesModel::addFile(const QString &path){
     QFileInfo fi(path);
-    if(!fi.exists()){
+    if(!fi.exists() || !fi.isFile()){
         return;
     }
     QString md5 = Helper::md5Sum(fi.absoluteFilePath());
diff --git a/pictureswidget.cpp b/pictureswidget.cpp
index 92b0490..54d86e2 100644
--- a/pictureswidget.cpp
+++ b/pictureswidget.cpp
@@ -64,7 +64,9 @@ void PicturesWidget::showPicViewer(bool toggled){
 void PicturesWidget::writeSettings(){
     QSettings s;
     MappingData selected = mMappingTree->selectedItem();
-    s.setValue("ui/selectedmapping", selected.path.first());
+    if(selected.isValid()){
+        s.setValue("ui/selectedmapping", selected.path.first());
+    }
     mPictureView->writeHeaderConfig();
 }