ENH: Add isEmpty() test to prevent qWarning() trace.

Modules/Wrappers/QtWidget/src/otbWrapperQtWidgetInputFilenameParameter.cxx

@@ -95,13 +95,16 @@ void QtWidgetInputFilenameParameter::SelectFile()
 
   assert( m_Input!=NULL );
 
-  QFileInfo finfo( m_Input->text() );
+  if( !m_Input->text().isEmpty() )
+    {
+    QFileInfo finfo( m_Input->text() );
 
-  fileDialog.setDirectory(
-    finfo.isDir()
-    ? finfo.absoluteFilePath()
-    : finfo.absoluteDir()
-  );
+    fileDialog.setDirectory(
+      finfo.isDir()
+      ? finfo.absoluteFilePath()
+      : finfo.absoluteDir()
+    );
+    }
 
 
   if (fileDialog.exec())

Modules/Wrappers/QtWidget/src/otbWrapperQtWidgetInputImageParameter.cxx

@@ -80,13 +80,16 @@ void QtWidgetInputImageParameter::SelectFile()
 
   assert( m_Input!=NULL );
 
-  QFileInfo finfo( m_Input->text() );
+  if( !m_Input->text().isEmpty() )
+    {
+    QFileInfo finfo( m_Input->text() );
 
-  fileDialog.setDirectory(
-    finfo.isDir()
-    ? finfo.absoluteFilePath()
-    : finfo.absoluteDir()
-  );
+    fileDialog.setDirectory(
+      finfo.isDir()
+      ? finfo.absoluteFilePath()
+      : finfo.absoluteDir()
+    );
+    }
 
   if (fileDialog.exec())
     {

Modules/Wrappers/QtWidget/src/otbWrapperQtWidgetInputProcessXMLParameter.cxx

@@ -73,13 +73,16 @@ void QtWidgetInputProcessXMLParameter::SelectFile()
 
   assert( m_Input!=NULL );
 
-  QFileInfo finfo( m_Input->text() );
+  if( !m_Input->text().isEmpty() )
+    {
+    QFileInfo finfo( m_Input->text() );
 
-  fileDialog.setDirectory(
-    finfo.isDir()
-    ? finfo.absoluteFilePath()
-    : finfo.absoluteDir()
-  );
+    fileDialog.setDirectory(
+      finfo.isDir()
+      ? finfo.absoluteFilePath()
+      : finfo.absoluteDir()
+    );
+    }
 
   if (fileDialog.exec())
     {

Modules/Wrappers/QtWidget/src/otbWrapperQtWidgetInputVectorDataParameter.cxx

@@ -76,13 +76,16 @@ void QtWidgetInputVectorDataParameter::SelectFile()
 
   assert( m_Input!=NULL );
 
-  QFileInfo finfo( m_Input->text() );
+  if( !m_Input->text().isEmpty() )
+    {
+    QFileInfo finfo( m_Input->text() );
 
-  fileDialog.setDirectory(
-    finfo.isDir()
-    ? finfo.absoluteFilePath()
-    : finfo.absoluteDir()
-  );
+    fileDialog.setDirectory(
+      finfo.isDir()
+      ? finfo.absoluteFilePath()
+      : finfo.absoluteDir()
+    );
+    }
 
   if (fileDialog.exec())
     {

Modules/Wrappers/QtWidget/src/otbWrapperQtWidgetOutputFilenameParameter.cxx

@@ -89,14 +89,16 @@ void QtWidgetOutputFilenameParameter::SelectFile()
 
   assert( m_Input!=NULL );
 
-  QFileInfo finfo( m_Input->text() );
-
-  fileDialog.setDirectory(
-    finfo.isDir()
-    ? finfo.absoluteFilePath()
-    : finfo.absoluteDir()
-  );
+  if( !m_Input->text().isEmpty() )
+    {
+    QFileInfo finfo( m_Input->text() );
 
+    fileDialog.setDirectory(
+      finfo.isDir()
+      ? finfo.absoluteFilePath()
+      : finfo.absoluteDir()
+    );
+    }
 
   if (fileDialog.exec())
     {

Modules/Wrappers/QtWidget/src/otbWrapperQtWidgetOutputImageParameter.cxx

@@ -92,14 +92,16 @@ void QtWidgetOutputImageParameter::SelectFile()
 
   assert( m_Input!=NULL );
 
-  QFileInfo finfo( m_Input->text() );
-
-  fileDialog.setDirectory(
-    finfo.isDir()
-    ? finfo.absoluteFilePath()
-    : finfo.absoluteDir()
-  );
+  if( !m_Input->text().isEmpty() )
+    {
+    QFileInfo finfo( m_Input->text() );
 
+    fileDialog.setDirectory(
+      finfo.isDir()
+      ? finfo.absoluteFilePath()
+      : finfo.absoluteDir()
+    );
+    }
 
   if (fileDialog.exec())
     {

Modules/Wrappers/QtWidget/src/otbWrapperQtWidgetOutputProcessXMLParameter.cxx

@@ -74,13 +74,16 @@ void QtWidgetOutputProcessXMLParameter::SelectFile()
 
   assert( m_Input!=NULL );
 
-  QFileInfo finfo( m_Input->text() );
+  if( !m_Input->text().isEmpty() )
+    {
+    QFileInfo finfo( m_Input->text() );
 
-  fileDialog.setDirectory(
-    finfo.isDir()
-    ? finfo.absoluteFilePath()
-    : finfo.absoluteDir()
-  );
+    fileDialog.setDirectory(
+      finfo.isDir()
+      ? finfo.absoluteFilePath()
+      : finfo.absoluteDir()
+    );
+    }
 
   if (fileDialog.exec())
     {

Modules/Wrappers/QtWidget/src/otbWrapperQtWidgetOutputVectorDataParameter.cxx

@@ -73,13 +73,16 @@ void QtWidgetOutputVectorDataParameter::SelectFile()
 
   assert( m_Input!=NULL );
 
-  QFileInfo finfo( m_Input->text() );
+  if( !m_Input->text().isEmpty() )
+    {
+    QFileInfo finfo( m_Input->text() );
 
-  fileDialog.setDirectory(
-    finfo.isDir()
-    ? finfo.absoluteFilePath()
-    : finfo.absoluteDir()
-  );
+    fileDialog.setDirectory(
+      finfo.isDir()
+      ? finfo.absoluteFilePath()
+      : finfo.absoluteDir()
+    );
+    }
 
   if (fileDialog.exec())
     {