cheese-preferences: Add camera_changed () method

This centralizes camera-change handling, and adds a check for their being
no camera removing a whole bunch of glib Critical messages being printed
when cheese is started without a camera.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>

1 files changed, 25 insertions, 9 deletions

diff --git a/src/cheese-preferences.vala b/src/cheese-preferences.vala
index f04660a..44e3547 100644
--- a/src/cheese-preferences.vala
+++ b/src/cheese-preferences.vala
@@ -128,6 +128,28 @@ public class Cheese.PreferencesDialog : GLib.Object
   }
 
   /**
+   * Update resolution list and save the current camera to settings.
+   */
+  private void camera_changed ()
+  {
+    Cheese.CameraDevice device, iter_device;
+    TreeIter iter;
+
+    device = camera.get_selected_device ();
+    if (device == null)
+      return;
+    settings.set_string ("camera", device.get_device_node ());
+    setup_resolutions_for_device (device);
+
+    for (bool next = camera_model.get_iter_first (out iter); next;
+         next = camera_model.iter_next (ref iter)) {
+      camera_model.get (iter, 1, out iter_device, -1);
+      if (iter_device == device)
+        source_combo.set_active_iter (iter);
+    }
+  }
+
+  /**
    * Initialize and populate the camera device combo box model.
    */
   private void initialize_camera_devices ()
@@ -140,8 +162,7 @@ public class Cheese.PreferencesDialog : GLib.Object
 
     devices.foreach(add_camera_device);
 
-    settings.set_string ("camera", camera.get_selected_device ().get_device_node ());
-    setup_resolutions_for_device (camera.get_selected_device ());
+    camera_changed ();
   }
 
   /**
@@ -227,8 +248,7 @@ public class Cheese.PreferencesDialog : GLib.Object
     combo.model.get (iter, 1, out dev);
     camera.set_device_by_device_node (dev.get_device_node ());
     camera.switch_camera_device ();
-    setup_resolutions_for_device (camera.get_selected_device ());
-    settings.set_string ("camera", dev.get_device_node ());
+    camera_changed ();
   }
 
   /**
@@ -474,8 +494,7 @@ public class Cheese.PreferencesDialog : GLib.Object
       }
     }
 
-    settings.set_string ("camera", camera.get_selected_device ().get_device_node ());
-    setup_resolutions_for_device (camera.get_selected_device ());
+    camera_changed ();
   }
 
   /**
@@ -496,9 +515,6 @@ public class Cheese.PreferencesDialog : GLib.Object
                       0, dev.get_name () + " (" + dev.get_device_node () + ")",
                       1, dev);
 
-    if (camera.get_selected_device ().get_device_node () == dev.get_device_node ())
-        source_combo.set_active_iter (iter);
-
     if (camera_model.iter_n_children (null) > 1)
       source_combo.sensitive = true;
   }