Utils: Allow full file paths with directory parts

... when creating a new empty file.

This simplifies file creation with file paths cut&paste from external
applications as it removes the need to split it into a directory part
and the file name.

Change-Id: I3f81db89d5ae7db4117c29a4f947cdf92dc4d50c
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/libs/utils/filewizardpage.cpp

@@ -95,6 +95,11 @@ void FileWizardPage::setFileName(const QString &name)
     d->m_ui.nameLineEdit->setText(name);
 }
 
+void FileWizardPage::setAllowDirectoriesInFileSelector(bool allow)
+{
+    d->m_ui.nameLineEdit->setAllowDirectories(allow);
+}
+
 bool FileWizardPage::isComplete() const
 {
     return d->m_complete;