Minor fixes to virt_mode select pull request

Changes:
- added hints about "which virt mode should I use"
- changed displayed virt modes to show modes in all caps

closes #44

qubesmanager/settings.py

@@ -524,7 +524,7 @@ class VMSettingsWindow(Ui_SettingsDialog, QDialog):
 
         try:
             if self.virt_mode.currentIndex() != self.virt_mode_idx:
-                self.vm.virt_mode = self.selected_virt_mode()
+                self.vm.virt_mode = self.selected_virt_mode().lower()
                 self.anything_changed = True
         except Exception as ex:
             msg.append(str(ex))
@@ -544,13 +544,13 @@ class VMSettingsWindow(Ui_SettingsDialog, QDialog):
         self.update_pvh_kernel_version_warning()
 
     def update_pv_warning(self):
-        if self.selected_virt_mode() == 'pv':
+        if self.selected_virt_mode() == 'PV':
             self.pv_warning.show()
         else:
             self.pv_warning.hide()
 
     def update_virt_mode_list(self):
-        choices = ['hvm', 'pv']
+        choices = ['HVM', 'PV']
 
         if hasattr(self, 'dev_list'):
             devs_attached = self.dev_list.selected_list.count() != 0
@@ -560,7 +560,7 @@ class VMSettingsWindow(Ui_SettingsDialog, QDialog):
         if devs_attached:
             self.pvh_mode_hidden.show()
         else:
-            choices.insert(0, 'pvh')
+            choices.insert(0, 'PVH')
             self.pvh_mode_hidden.hide()
 
         if hasattr(self, 'virt_mode_list'):
@@ -573,8 +573,8 @@ class VMSettingsWindow(Ui_SettingsDialog, QDialog):
 
         # XXX: Hardcoded default value.
         self.virt_mode_list, self.virt_mode_idx = utils.prepare_choice(
-                self.virt_mode, self.vm, 'virt_mode', choices, 'hvm',
+                self.virt_mode, self.vm, 'virt_mode', choices, 'HVM',
-                allow_default=True)
+                allow_default=True, transform=(lambda x: str(x).upper()))
 
         if old_mode is not None:
             self.virt_mode.setCurrentIndex(self.virt_mode_list.index(old_mode))
@@ -585,7 +585,7 @@ class VMSettingsWindow(Ui_SettingsDialog, QDialog):
         self.update_pvh_kernel_version_warning()
 
     def update_pvh_kernel_version_warning(self):
-        if self.selected_virt_mode() != 'pvh':
+        if self.selected_virt_mode() != 'PVH':
             self.pvh_kernel_version_warning.hide()
             return
 
@@ -723,7 +723,7 @@ class VMSettingsWindow(Ui_SettingsDialog, QDialog):
         self.update_virt_mode_list()
 
     def update_pvh_dont_support_devs(self):
-        if self.selected_virt_mode() == 'pvh':
+        if self.selected_virt_mode() == 'PVH':
             self.dev_list.setEnabled(False)
             self.pvh_dont_support_devs.setVisible(True)
         else:

qubesmanager/utils.py

@@ -34,7 +34,7 @@ def _filter_internal(vm):
 def prepare_choice(widget, holder, propname, choice, default,
         filter_function=None, *,
         icon_getter=None, allow_internal=None, allow_default=False,
-        allow_none=False):
+        allow_none=False, transform=None):
 
     # for newly created vms, set propname to None
 
@@ -55,6 +55,8 @@ def prepare_choice(widget, holder, propname, choice, default,
 
     if propname is not None:
         oldvalue = getattr(holder, propname)
+        if transform is not None:
+            oldvalue = transform(oldvalue)
         is_default = holder.property_is_default(propname)
     else:
         oldvalue = object()  # won't match for identity

ui/settingsdlg.ui

@@ -6,7 +6,7 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>773</width>
+    <width>813</width>
     <height>573</height>
    </rect>
   </property>
@@ -409,7 +409,7 @@
               <property name="fieldGrowthPolicy">
                <enum>QFormLayout::AllNonFixedFieldsGrow</enum>
               </property>
-              <item row="0" column="0" rowspan="2">
+              <item row="0" column="0">
                <widget class="QLabel" name="label_19">
                 <property name="text">
                  <string>Kernel:</string>
@@ -432,7 +432,7 @@
                  </font>
                 </property>
                 <property name="text">
-                 <string>PVH mode requires Linux 4.11 or newer.</string>
+                 <string>WARNING: PVH mode requires Linux 4.11 or newer.</string>
                 </property>
                 <property name="wordWrap">
                  <bool>true</bool>
@@ -490,7 +490,7 @@
               <property name="fieldGrowthPolicy">
                <enum>QFormLayout::AllNonFixedFieldsGrow</enum>
               </property>
-              <item row="0" column="0" rowspan="3">
+              <item row="1" column="0">
                <widget class="QLabel" name="label_27">
                 <property name="text">
                  <string>Mode:</string>
@@ -500,10 +500,10 @@
                 </property>
                </widget>
               </item>
-              <item row="0" column="1">
+              <item row="1" column="1">
                <widget class="QComboBox" name="virt_mode"/>
               </item>
-              <item row="1" column="1">
+              <item row="2" column="1">
                <widget class="QLabel" name="pv_warning">
                 <property name="font">
                  <font>
@@ -523,7 +523,7 @@
                 </property>
                </widget>
               </item>
-              <item row="2" column="1">
+              <item row="3" column="1">
                <widget class="QLabel" name="pvh_mode_hidden">
                 <property name="font">
                  <font>
@@ -540,6 +540,21 @@
                 </property>
                </widget>
               </item>
+              <item row="0" column="0" colspan="2">
+               <widget class="QLabel" name="label_21">
+                <property name="font">
+                 <font>
+                  <italic>true</italic>
+                 </font>
+                </property>
+                <property name="text">
+                 <string>PVH mode is recommended if possible (Linux kernel 4.11 or newer, no PCI passthrough). For Windows qubes always use HVM.</string>
+                </property>
+                <property name="wordWrap">
+                 <bool>true</bool>
+                </property>
+               </widget>
+              </item>
              </layout>
             </widget>
            </item>