GUI: improve App::PropertyPath directory selector

Editing direcotry in lineEdit was open to escaped character problems
i.e. \t or \n which can be pert of notmal directory path were converted
to tab or new line. Also leaving the lineEdit without hitting Enter was
discarding changes.

Signed-off-by: Przemo Firszt <przemo@firszt.eu>

src/Gui/FileDialog.cpp

@@ -534,6 +534,8 @@ FileChooser::FileChooser ( QWidget * parent )
 
     connect(lineEdit, SIGNAL(textChanged(const QString &)),
             this, SIGNAL(fileNameChanged(const QString &)));
+
+    connect(lineEdit, SIGNAL(editingFinished()), this, SLOT(editingFinished()));
 
     button = new QPushButton(QLatin1String("..."), this);
     button->setFixedWidth(2*button->fontMetrics().width(QLatin1String(" ... ")));
@@ -561,6 +563,15 @@ QString FileChooser::fileName() const
     return lineEdit->text();
 }
 
+void FileChooser::editingFinished()
+{
+    QString le_converted = lineEdit->text();
+    le_converted.replace(QString::fromStdString("\\"), QString::fromStdString("/"));
+    lineEdit->setText(le_converted);
+    FileDialog::setWorkingDirectory(le_converted);
+    fileNameSelected(le_converted);
+}
+
 /** 
  * Sets the file name \a s.
  */

src/Gui/FileDialog.h

@@ -176,6 +176,7 @@ public Q_SLOTS:
 
 private Q_SLOTS:
     void chooseFile();
+    void editingFinished();
 
 private:
     QLineEdit *lineEdit;