Expose tags to precache in app widget for use with private database

Since applications cannot directly manipulate the database of the
app widget, we expose a property and delegate it to the
privare database.

Libs/DICOM/Widgets/ctkDICOMAppWidget.cpp

@@ -296,6 +296,22 @@ bool ctkDICOMAppWidget::searchWidgetPopUpMode(){
   return d->IsSearchWidgetPopUpMode;
 }
 
+//------------------------------------------------------------------------------
+void ctkDICOMAppWidget::setTagsToPrecache( const QStringList tags)
+{
+  Q_D(ctkDICOMAppWidget);
+  d->DICOMDatabase->setTagsToPrecache(tags);
+}
+
+//------------------------------------------------------------------------------
+const QStringList ctkDICOMAppWidget::tagsToPrecache()
+{
+  Q_D(ctkDICOMAppWidget);
+  return d->DICOMDatabase->tagsToPrecache();
+}
+
+
+
 //----------------------------------------------------------------------------
 void ctkDICOMAppWidget::setSearchWidgetPopUpMode(bool flag){
   Q_D(ctkDICOMAppWidget);

Libs/DICOM/Widgets/ctkDICOMAppWidget.h

@@ -36,14 +36,23 @@ class CTK_DICOM_WIDGETS_EXPORT ctkDICOMAppWidget : public QWidget
   Q_OBJECT
   Q_PROPERTY(QString databaseDirectory READ databaseDirectory WRITE setDatabaseDirectory)
   Q_PROPERTY(bool searchWidgetPopUpMode READ searchWidgetPopUpMode WRITE setSearchWidgetPopUpMode)
+  Q_PROPERTY(QStringList tagsToPrecache READ tagsToPrecache WRITE setTagsToPrecache)
 
 public:
   typedef QWidget Superclass;
   explicit ctkDICOMAppWidget(QWidget* parent=0);
   virtual ~ctkDICOMAppWidget();
 
+  /// Directory being used to store the dicom database
   QString databaseDirectory() const;
 
+  /// See ctkDICOMDatabase for description - these accessors
+  /// delegate to the corresponding routines of the internal
+  /// instance of the database.
+  /// @see ctkDICOMDatabase
+  void setTagsToPrecache(const QStringList tags);
+  const QStringList tagsToPrecache();
+
   /// Updates schema of loaded database to match the one
   /// coded by the current version of ctkDICOMDatabase.
   /// Also provides a dialog box for progress