[App][Gui]Add Filter for PropertyFile in PropertyEditor

src/App/PropertyFile.cpp

@@ -630,7 +630,7 @@ TYPESYSTEM_SOURCE(App::PropertyFile , App::PropertyString)
 
 PropertyFile::PropertyFile()
 {
-
+    m_filter = "";
 }
 
 PropertyFile::~PropertyFile()
@@ -638,3 +638,13 @@ PropertyFile::~PropertyFile()
 
 }
 
+void PropertyFile::setFilter(const std::string f)
+{
+    m_filter = f;
+}
+
+std::string PropertyFile::getFilter(void) const
+{
+    return m_filter;
+}
+

src/App/PropertyFile.h

@@ -52,9 +52,15 @@ class AppExport PropertyFile : public PropertyString
 public:
     PropertyFile(void);
     virtual ~PropertyFile();
-    
+
     virtual const char* getEditorName(void) const
     { return "Gui::PropertyEditor::PropertyFileItem"; }
+
+    virtual void setFilter(const std::string filter);
+    virtual std::string getFilter(void) const;
+
+private:
+    std::string m_filter;
 };
 
 /** File include properties

src/Gui/propertyeditor/PropertyItem.cpp

@@ -3369,7 +3369,13 @@ QWidget* PropertyFileItem::createEditor(QWidget* parent, const QObject* receiver
 
 void PropertyFileItem::setEditorData(QWidget *editor, const QVariant& data) const
 {
+    const App::Property* prop = getFirstProperty();
+    const App::PropertyFile* propFile = static_cast<const App::PropertyFile*>(prop);
+    std::string filter = propFile->getFilter();
     Gui::FileChooser *fc = qobject_cast<Gui::FileChooser*>(editor);
+    if (!filter.empty()) {
+        fc->setFilter(Base::Tools::fromStdString(filter));
+    }
     fc->setFileName(data.toString());
 }