Merge lp:~wxl/ubiquity/ubiquity into lp:ubiquity

[ԜаӀtеr Ⅼарсһуnѕkі]

Provides an error when insufficient disk space is detected in the Prepare stage of Ubiquity when installing Kubuntu.

Previously, the show_insufficient_space_page() definition contained nothing more than a return.

This copies ~clementlefebvre's fix for Mint KDE on Github:
   https://github.com/linuxmint/ubiquity/commit/47d7f1e042de292d66f482b76117970c1581c375

Note that QtGui from PyQt4 is used to create a dialog.

[Mathieu Trudel-Lapierre (cyphermox)]

LGTM

review: Approve

=== modified file 'ubiquity/plugins/ubi-prepare.py'
--- ubiquity/plugins/ubi-prepare.py	2016-09-26 18:16:26 +0000
+++ ubiquity/plugins/ubi-prepare.py	2017-01-31 04:42:30 +0000
@@ -290,6 +290,12 @@
         self.plugin_widgets = self.page
 
     def show_insufficient_space_page(self, required, free):
+        from PyQt4 import QtGui
+        dialog = QtGui.QMessageBox(self.page)
+        dialog.setText(required)
+        dialog.setDetailedText(free)
+        dialog.exec_()
+        sys.exit(1)
         return
 
     def set_using_secureboot(self, secureboot):