preferences: Disable XML editing by default

This adds a field in gsettings and preferences UI to enable
XML editing. It's off by default. The XML tab page is still visible,
but the textview is not editable, and there's a warning at the top:

  XML editing is disabled in 'Preferences'.
  Only enable it if you know what you are doing.

When the setting is enabled, the warning goes away and the textview
is editable. This puts a roadblock up for people that don't know what
they are doing, but still advertises the feature and keeps the
UI surface difference fairly small between on/off states.

data/org.virt-manager.virt-manager.gschema.xml

@@ -53,6 +53,12 @@
       <description>Show system tray icon while app is running</description>
     </key>
 
+    <key name="xmleditor-enabled" type="b">
+      <default>false</default>
+      <summary>Enable XML editting UI</summary>
+      <description>Enable XML editting UI</description>
+    </key>
+
     <key name="enable-libguestfs-vm-inspection" type="b">
       <default>true</default>
       <summary>Enable libguestfs VM inspection</summary>

tests/uitests/addhardware.py

@@ -660,6 +660,7 @@ class AddHardware(uiutils.UITestCase):
         """
         Test XML editor integration
         """
+        self.app.open(xmleditor_enabled=True)
         details = self._open_details_window()
         win = self._open_addhw_window(details)
         finish = win.find("Finish", "push button")

tests/uitests/createnet.py

@@ -59,6 +59,7 @@ class CreateNet(uiutils.UITestCase):
 
 
     def testCreateNetXMLEditor(self):
+        self.app.open(xmleditor_enabled=True)
         hostwin = self._open_host_window("Virtual Networks")
         win = self._open_create_win(hostwin)
         name = win.find("Name:", "text")

tests/uitests/createpool.py

@@ -89,6 +89,7 @@ class CreatePool(uiutils.UITestCase):
 
 
     def testCreatePoolXMLEditor(self):
+        self.app.open(xmleditor_enabled=True)
         hostwin = self._open_host_window("Storage")
         win = self._open_create_win(hostwin)
         finish = win.find("Finish", "push button")

tests/uitests/createvol.py

@@ -66,6 +66,7 @@ class CreateVol(uiutils.UITestCase):
 
 
     def testCreateVolXMLEditor(self):
+        self.app.open(xmleditor_enabled=True)
         hostwin = self._open_host_window("Storage")
         poolcell = hostwin.find("default-pool", "table cell")
         poolcell.click()

tests/uitests/details.py

@@ -487,6 +487,7 @@ class Details(uiutils.UITestCase):
         """
         Test XML editing interaction
         """
+        self.app.open(xmleditor_enabled=True)
         win = self._open_details_window(vmname="test-clone-simple")
         finish = win.find("config-apply")
         xmleditor = win.find("XML editor")

tests/uitests/host.py

@@ -30,6 +30,7 @@ class Host(uiutils.UITestCase):
         """
         Test edits to net config
         """
+        self.app.open(xmleditor_enabled=True)
         win = self._open_host_window("Virtual Networks").find("network-grid")
         finish = win.find("Apply", "push button")
 
@@ -69,6 +70,7 @@ class Host(uiutils.UITestCase):
         """
         Test edits to pool config
         """
+        self.app.open(xmleditor_enabled=True)
         win = self._open_host_window("Storage").find("storage-grid")
         finish = win.find("Apply", "push button")
 

tests/uitests/newvm.py

@@ -432,6 +432,7 @@ class NewVM(uiutils.UITestCase):
         """
         Test new VM with raw XML editing via customize wizard
         """
+        self.app.open(xmleditor_enabled=True)
         newvm = self._open_create_wizard()
 
         # Create a custom named VM, using CDROM media, and default storage

tests/uitests/prefs.py

@@ -55,3 +55,34 @@ class VMMPrefs(uiutils.UITestCase):
 
         win.find_fuzzy("Close", "push button").click()
         uiutils.check_in_loop(lambda: win.visible is False)
+
+
+    def testPrefsXMLEditor(self):
+        managerwin = self.app.topwin
+        detailswin = self._open_details_window(vmname="test-clone-simple")
+        finish = detailswin.find("config-apply")
+        xmleditor = detailswin.find("XML editor")
+
+        detailswin.find("XML", "page tab").click()
+        warnlabel = detailswin.find_fuzzy("XML editing is disabled")
+        self.assertTrue(warnlabel.visible)
+        origtext = xmleditor.text
+        xmleditor.typeText("1234abcd")
+        self.assertEqual(xmleditor.text, origtext)
+
+        managerwin.click()
+        managerwin.find("Edit", "menu").click()
+        managerwin.find("Preferences", "menu item").click()
+        prefswin = self.app.root.find_fuzzy("Preferences", "frame")
+        prefswin.find_fuzzy("Enable XML").click()
+        prefswin.find_fuzzy("Close", "push button").click()
+        uiutils.check_in_loop(lambda: prefswin.visible is False)
+
+        managerwin.keyCombo("<alt>F4")
+        detailswin.click()
+        xmleditor.text = xmleditor.text.replace(">",
+            "><title>FOOTITLE</title>", 1)
+        finish.click()
+        detailswin.find("Details", "page tab").click()
+        uiutils.check_in_loop(lambda:
+                detailswin.find("Title:", "text").text == "FOOTITLE")

tests/uitests/utils.py

@@ -444,7 +444,7 @@ class VMMDogtailApp(object):
         return bool(self._proc and self._proc.poll() is None)
 
     def open(self, extra_opts=None, check_already_running=True, use_uri=True,
-            window_name=None):
+            window_name=None, xmleditor_enabled=False):
         extra_opts = extra_opts or []
 
         if tests.utils.clistate.debug:
@@ -460,9 +460,12 @@ class VMMDogtailApp(object):
             cmd += ["-m", "coverage", "run", "--append",
                     "--omit", "/usr/*"]
         cmd += [os.path.join(os.getcwd(), "virt-manager"),
-                "--test-first-run", "--no-fork"]
+                "--test-first-run",
+                "--no-fork"]
         if use_uri:
             cmd += ["--connect", self.uri]
+        if xmleditor_enabled:
+            cmd += ["--test-options=xmleditor-enabled"]
         cmd += extra_opts
 
         if check_already_running:

ui/preferences.ui

@@ -119,6 +119,21 @@
                               </packing>
                             </child>
                           </object>
+                          <packing>
+                            <property name="left_attach">0</property>
+                            <property name="top_attach">2</property>
+                          </packing>
+                        </child>
+                        <child>
+                          <object class="GtkCheckButton" id="prefs-xmleditor">
+                            <property name="label" translatable="yes">Enable _XML editing</property>
+                            <property name="visible">True</property>
+                            <property name="can_focus">True</property>
+                            <property name="receives_default">False</property>
+                            <property name="use_underline">True</property>
+                            <property name="draw_indicator">True</property>
+                            <signal name="toggled" handler="on_prefs_xmleditor_toggled" swapped="no"/>
+                          </object>
                           <packing>
                             <property name="left_attach">0</property>
                             <property name="top_attach">1</property>

ui/xmleditor.ui

@@ -36,26 +36,76 @@
       </packing>
     </child>
     <child>
-      <object class="GtkBox" id="xml-box">
+      <object class="GtkGrid">
         <property name="visible">True</property>
         <property name="can_focus">False</property>
         <property name="margin_left">6</property>
         <property name="margin_top">6</property>
-        <property name="orientation">vertical</property>
+        <property name="row_spacing">6</property>
-        <property name="spacing">6</property>
         <child>
-          <object class="GtkScrolledWindow" id="xml-scroll">
+          <object class="GtkBox" id="xml-box">
             <property name="visible">True</property>
-            <property name="can_focus">True</property>
+            <property name="can_focus">False</property>
-            <property name="shadow_type">in</property>
+            <property name="hexpand">True</property>
+            <property name="vexpand">True</property>
+            <property name="orientation">vertical</property>
+            <property name="spacing">6</property>
             <child>
-              <placeholder/>
+              <object class="GtkScrolledWindow" id="xml-scroll">
+                <property name="visible">True</property>
+                <property name="can_focus">True</property>
+                <property name="shadow_type">in</property>
+                <child>
+                  <placeholder/>
+                </child>
+              </object>
+              <packing>
+                <property name="expand">True</property>
+                <property name="fill">True</property>
+                <property name="position">0</property>
+              </packing>
             </child>
           </object>
           <packing>
-            <property name="expand">True</property>
+            <property name="left_attach">0</property>
-            <property name="fill">True</property>
+            <property name="top_attach">1</property>
-            <property name="position">0</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkBox" id="xml-warning-box">
+            <property name="visible">True</property>
+            <property name="can_focus">False</property>
+            <property name="spacing">6</property>
+            <child>
+              <object class="GtkImage">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="stock">gtk-dialog-warning</property>
+              </object>
+              <packing>
+                <property name="expand">False</property>
+                <property name="fill">True</property>
+                <property name="position">0</property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkLabel">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="label" translatable="yes">&lt;small&gt;XML editing is disabled in 'Preferences'. Only enable it if you know what you are doing.&lt;/small&gt;</property>
+                <property name="use_markup">True</property>
+                <property name="wrap">True</property>
+              </object>
+              <packing>
+                <property name="expand">False</property>
+                <property name="fill">True</property>
+                <property name="position">1</property>
+              </packing>
+            </child>
+          </object>
+          <packing>
+            <property name="left_attach">0</property>
+            <property name="top_attach">0</property>
           </packing>
         </child>
       </object>

virt-manager

@@ -192,6 +192,7 @@ class CLITestOptionsClass:
         self.leak_debug = _get("leak-debug")
         self.old_poll = _get("old-poll")
         self.no_events = _get("no-events")
+        self.xmleditor_enabled = _get("xmleditor-enabled")
 
         if opts:
             print("Unknown --test-options keys: %s" % opts)

virtManager/config.py

@@ -169,6 +169,8 @@ class vmmConfig(object):
         self.conf = _SettingsWrapper("org.virt-manager.virt-manager")
 
         self.CLITestOptions = CLITestOptions
+        if self.CLITestOptions.xmleditor_enabled:
+            self.set_xmleditor_enabled(True)
 
         # We don't create it straight away, since we don't want
         # to block the app pending user authorization to access
@@ -364,6 +366,16 @@ class vmmConfig(object):
     def set_view_system_tray(self, val):
         self.conf.set("/system-tray", val)
 
+
+    # XML editor enabled
+    def on_xmleditor_enabled_changed(self, cb):
+        return self.conf.notify_add("/xmleditor-enabled", cb)
+    def get_xmleditor_enabled(self):
+        return self.conf.get("/xmleditor-enabled")
+    def set_xmleditor_enabled(self, val):
+        self.conf.set("/xmleditor-enabled", val)
+
+
     # Libguestfs VM inspection
     def on_libguestfs_inspect_vms_changed(self, cb):
         return self.conf.notify_add("/enable-libguestfs-vm-inspection", cb)

virtManager/preferences.py

@@ -36,6 +36,7 @@ class vmmPreferences(vmmGObjectUI):
         self._orig_libguestfs_val = None
 
         self.refresh_view_system_tray()
+        self.refresh_xmleditor()
         self.refresh_libguestfs()
         self.refresh_update_interval()
         self.refresh_console_accels()
@@ -65,6 +66,7 @@ class vmmPreferences(vmmGObjectUI):
             "on_prefs_close_clicked": self.close,
 
             "on_prefs_system_tray_toggled": self.change_view_system_tray,
+            "on_prefs_xmleditor_toggled": self.change_xmleditor,
             "on_prefs_libguestfs_toggled": self.change_libguestfs,
             "on_prefs_stats_update_interval_changed": self.change_update_interval,
             "on_prefs_console_accels_toggled": self.change_console_accels,
@@ -203,6 +205,10 @@ class vmmPreferences(vmmGObjectUI):
         val = self.config.get_view_system_tray()
         self.widget("prefs-system-tray").set_active(bool(val))
 
+    def refresh_xmleditor(self):
+        val = self.config.get_xmleditor_enabled()
+        self.widget("prefs-xmleditor").set_active(bool(val))
+
     def refresh_libguestfs(self):
         val = self.config.get_libguestfs_inspect_vms()
         if self._orig_libguestfs_val is None:
@@ -364,6 +370,8 @@ class vmmPreferences(vmmGObjectUI):
 
     def change_view_system_tray(self, src):
         self.config.set_view_system_tray(src.get_active())
+    def change_xmleditor(self, src):
+        self.config.set_xmleditor_enabled(src.get_active())
     def change_libguestfs(self, src):
         val = src.get_active()
         self.config.set_libguestfs_inspect_vms(val)

virtManager/xmleditor.py

@@ -6,6 +6,7 @@ import gi
 gi.require_version('GtkSource', '4')
 from gi.repository import GtkSource
 
+from . import uiutil
 from .baseclass import vmmGObjectUI
 
 _PAGE_DETAILS = 0
@@ -33,6 +34,10 @@ class vmmXMLEditor(vmmGObjectUI):
         self._srcbuf = None
         self._init_ui()
 
+        self.add_gsettings_handle(
+            self.config.on_xmleditor_enabled_changed(
+                self._xmleditor_enabled_changed_cb))
+
 
     def _cleanup(self):
         pass
@@ -42,6 +47,12 @@ class vmmXMLEditor(vmmGObjectUI):
     # UI init #
     ###########
 
+    def _set_xmleditor_enabled_from_config(self):
+        enabled = self.config.get_xmleditor_enabled()
+        self._srcview.set_editable(enabled)
+        uiutil.set_grid_row_visible(self.widget("xml-warning-box"),
+                not enabled)
+
     def _init_ui(self):
         self._srcview = GtkSource.View()
         self._srcbuff = self._srcview.get_buffer()
@@ -63,6 +74,7 @@ class vmmXMLEditor(vmmGObjectUI):
 
         self._srcview.show_all()
         self.widget("xml-scroll").add(self._srcview)
+        self._set_xmleditor_enabled_from_config()
 
 
     ####################
@@ -178,3 +190,6 @@ class vmmXMLEditor(vmmGObjectUI):
 
     def _after_page_changed_cb(self, notebook, gparam):
         self._curpage = notebook.get_current_page()
+
+    def _xmleditor_enabled_changed_cb(self):
+        self._set_xmleditor_enabled_from_config()