Removed deprecated GObject.init_threads call.

Fix: A ton of threading problems caused by GObject.init_threads call;
Fix: minor fixes.

lisp/backends/gst/backend.py

@@ -19,7 +19,7 @@
 
 from lisp.backends.base.backend import Backend as BaseBackend
 from lisp.backends.gst import elements, settings
-from lisp.backends.gst.gi_repository import Gst, GObject
+from lisp.backends.gst.gi_repository import Gst
 from lisp.backends.gst.gst_cue_factories import register_factories
 from lisp.backends.gst.gst_media_settings import GstMediaSettings
 from lisp.backends.gst.gst_settings import GstSettings
@@ -34,10 +34,7 @@
 
 class Backend(BaseBackend):
     def __init__(self):
-        """Startup GStreamer and GObject."""
-
-        # Initialize GStreamer and GObject
-        GObject.threads_init()
+        # Initialize GStreamer
         Gst.init(None)
 
         # Register GStreamer settings widgets

lisp/layouts/cart_layout/cue_widget.py

@@ -88,13 +88,10 @@ def __init__(self, cue, **kwargs):
         self.seekSlider.setFocusPolicy(Qt.NoFocus)
         self.seekSlider.setVisible(False)
 
-        # Volume percentage slider (0%-200%)
         self.volumeSlider = QClickSlider(self.nameButton)
-        #self.volumeSlider.setTickPosition(QClickSlider.TicksBothSides)
         self.volumeSlider.setOrientation(Qt.Vertical)
         self.volumeSlider.setFocusPolicy(Qt.NoFocus)
         self.volumeSlider.setRange(-500, 0)
-        #self.volumeSlider.setTickInterval(50)  # 0%, 50%, 100%, 150%, 200%
         self.volumeSlider.setTracking(True)
         self.volumeSlider.valueChanged.connect(self._change_volume,
                                                Qt.DirectConnection)
@@ -229,7 +226,8 @@ def _set_cue(self, cue):
                                                 Connection.QtQueued)
 
         if isinstance(cue, MediaCue):
-            self.cue.media.changed('pipe').connect(self._media_updated)
+            self.cue.media.changed('pipe').connect(self._media_updated,
+                                                   Connection.QtQueued)
 
             self.cue.paused.connect(self.dbMeter.reset, Connection.QtQueued)
             self.cue.stopped.connect(self.dbMeter.reset, Connection.QtQueued)
@@ -247,7 +245,7 @@ def _set_cue(self, cue):
         self.cue.end.connect(self._status_stopped, Connection.QtQueued)
 
         self._cue_time = CueTime(self.cue)
-        self._cue_time.notify.connect(self._update_time)
+        self._cue_time.notify.connect(self._update_time, Connection.QtQueued)
 
         self._update_name(cue.name)
         self._update_style(cue.stylesheet)

lisp/layouts/cart_layout/layout.py

@@ -73,6 +73,7 @@ def __init__(self, cue_model, **kwargs):
         self._model_adapter.item_added.connect(self.__cue_added, Connection.QtQueued)
         self._model_adapter.item_removed.connect(self.__cue_removed, Connection.QtQueued)
         self._model_adapter.item_moved.connect(self.__cue_moved, Connection.QtQueued)
+        self._model_adapter.model_reset.connect(self.__model_reset)
 
         # Add layout-specific menus
         self.new_page_action = QAction(self)
@@ -417,3 +418,8 @@ def __cue_moved(self, old_index, new_index):
         else:
             widget = self.__pages[o_page].take_widget(o_row, o_column)
             self.__pages[n_page].add_widget(widget, n_row, n_column)
+
+    def __model_reset(self):
+        self.__context_widget = None
+        for page in self.__pages:
+            page.reset()

lisp/layouts/cart_layout/page_widget.py

@@ -91,16 +91,8 @@ def index(self, widget):
     def widgets(self):
         return iter(self.__widgets.values())
 
-    def _check_index(self, row, column):
-        if not isinstance(row, int):
-            raise TypeError('rows index must be integers, not {}'
-                            .format(row.__class__.__name__))
-        if not isinstance(column, int):
-            raise TypeError('columns index must be integers, not {}'
-                            .format(column.__class__.__name__))
-
-        if not 0 <= row < self.__rows or not 0 <= column < self.__columns:
-            raise IndexError('index out of bound {}'.format((row, column)))
+    def reset(self):
+        self.__widgets.clear()
 
     def dragEnterEvent(self, event):
         if event.mimeData().hasText():
@@ -135,6 +127,17 @@ def dragMoveEvent(self, event):
         else:
             event.ignore()
 
+    def _check_index(self, row, column):
+        if not isinstance(row, int):
+            raise TypeError('rows index must be integers, not {}'
+                            .format(row.__class__.__name__))
+        if not isinstance(column, int):
+            raise TypeError('columns index must be integers, not {}'
+                            .format(column.__class__.__name__))
+
+        if not 0 <= row < self.__rows or not 0 <= column < self.__columns:
+            raise IndexError('index out of bound {}'.format((row, column)))
+
     def _event_index(self, event):
         # Margins and spacings are equals
         space = self.layout().horizontalSpacing()

lisp/layouts/list_layout/cue_list_view.py

@@ -49,6 +49,7 @@ def __init__(self, cue_model, parent=None):
         self._model.item_added.connect(self.__cue_added, Connection.QtQueued)
         self._model.item_moved.connect(self.__cue_moved, Connection.QtQueued)
         self._model.item_removed.connect(self.__cue_removed, Connection.QtQueued)
+        self._model.model_reset.connect(self.__model_reset)
         self._drag_item = None
         self._drag_start = None
         self.__item_moving = False
@@ -148,6 +149,10 @@ def __cue_removed(self, cue):
             index -= 1
         self.setCurrentIndex(self.model().index(index, 0))
 
+    def __model_reset(self):
+        self.reset()
+        self.clear()
+
     def __init_item(self, item, cue):
         item.name_column = CueListView.H_NAMES.index('Cue')
         for index, widget in enumerate(CueListView.H_WIDGETS):