Check if text mode was actually requested by kickstart (#2293672)

Provide information about text mode being requested via DBus property
set at kickstart parsing time & check this property when deciding if
the VNC question should be shown.

Also cleanup the code a bit and fix a typo affecting vnc command parsing.

Resolves: rhbz#2293672

pyanaconda/display.py

@@ -155,15 +155,20 @@ def check_vnc_can_be_started(anaconda):
                               (blivet.util.total_memory(), min_gui_ram))
         vnc_startup_possible = False
 
-    # disable VNC question if text mode is requested and this is a ks install
-    if anaconda.tui_mode and flags.automatedInstall:
-        error_messages.append("Not asking for VNC because of an automated install")
-        vnc_startup_possible = False
-
-    # disable VNC question if we were explicitly asked for text in kickstart
-    if anaconda.display_mode == constants.DisplayModes.TUI:
-        error_messages.append("Not asking for VNC because text mode was explicitly asked for in kickstart")
-        vnc_startup_possible = False
+    # if running in text mode, we might sometimes skip showing the VNC question
+    if anaconda.tui_mode:
+        # disable VNC question if we were explicitly asked for text mode in kickstart
+        ui_proxy = RUNTIME.get_proxy(USER_INTERFACE)
+        if ui_proxy.DisplayModeTextKickstarted:
+            error_messages.append(
+                "Not asking for VNC because text mode was explicitly asked for in kickstart"
+            )
+            vnc_startup_possible = False
+        # disable VNC question if text mode is requested and this is an automated kickstart
+        # installation
+        elif flags.automatedInstall:
+            error_messages.append("Not asking for VNC because of an automated install")
+            vnc_startup_possible = False
 
     # disable VNC question if we don't have network
     network_proxy = NETWORK.get_proxy()

pyanaconda/modules/runtime/user_interface/ui.py

@@ -29,6 +29,8 @@
 from pyanaconda.modules.common.constants.objects import USER_INTERFACE
 from pyanaconda.modules.common.structures.policy import PasswordPolicy
 
+from pykickstart.commands.displaymode import DISPLAY_MODE_TEXT
+
 log = get_module_logger(__name__)
 
 __all__ = ["UIModule"]
@@ -48,6 +50,9 @@ def __init__(self):
         self.display_mode_nonInteractive_changed = Signal()
         self._displayMode_nonInteractive = False
 
+        self.display_mode_text_kickstarted_changed = Signal()
+        self._display_mode_text_kickstarted = False
+
         self.vnc_changed = Signal()
         self._vnc = VncData()
 
@@ -59,6 +64,12 @@ def process_kickstart(self, data):
         """Process the kickstart data."""
         self.set_display_mode(data.displaymode.displayMode)
         self.set_display_mode_non_interactive(data.displaymode.nonInteractive)
+        # check if text mode was requested in kickstart
+        if data.displaymode.displayMode == DISPLAY_MODE_TEXT:
+            log.debug("Text mode requested by kickstart")
+            self._display_mode_text_kickstarted = True
+            self.display_mode_text_kickstarted_changed.emit()
+
         vnc = VncData()
         vnc.enabled = data.vnc.enabled
         vnc.host = data.vnc.host
@@ -113,6 +124,19 @@ def set_display_mode_non_interactive(self, non_interactive):
         self.display_mode_nonInteractive_changed.emit()
         log.debug("Display mode non-interactive set to: %s", str(non_interactive))
 
+    @property
+    def display_mode_text_kickstarted(self):
+        """Report if text mode was explicitely requested via kickstart.
+
+
+        #NOTE: No setter as this is only set once when parsing the kickstasrt.
+
+        :return: if text mode was requested by kickstart
+        :rtype: bool
+        """
+
+        return self._display_mode_text_kickstarted
+
     @property
     def vnc(self):
         """The VncData.

pyanaconda/modules/runtime/user_interface/ui_interface.py

@@ -101,6 +101,11 @@ def DisplayModeNonInteractive(self, non_interactive: Bool):
         """
         self.implementation.set_display_mode_non_interactive(non_interactive)
 
+    @property
+    def DisplayModeTextKickstarted(self) -> Bool:
+        """Report if text mode was explicitly requested via kickstart."""
+        return self.implementation.display_mode_text_kickstarted
+
     @property
     def Vnc(self) -> Structure:
         """Specification of the vnc configuration."""