Don't show layer edit options if layer is not visible

CHANGES.md

@@ -55,6 +55,8 @@ v0.14.0 (unreleased)
   after they were closed if they were accessed through the
   IPython console. [#1770]
 
+* Don't show layer edit options if layer is not visible. [#1805]
+
 v0.13.4 (unreleased)
 --------------------
 

glue/core/message.py

@@ -13,7 +13,7 @@
            'DataCollectionDeleteMessage', 'ApplicationClosedMessage',
            'DataRemoveComponentMessage', 'LayerArtistEnabledMessage',
            'LayerArtistDisabledMessage', 'DataRenameComponentMessage',
-           'DataReorderComponentMessage']
+           'DataReorderComponentMessage', 'LayerArtistVisibilityMessage']
 
 
 class Message(object):
@@ -251,6 +251,12 @@ def __init__(self, sender, tag=None):
         self.layer_artist = self.sender
 
 
+class LayerArtistVisibilityMessage(Message):
+    def __init__(self, sender, tag=None):
+        super(LayerArtistVisibilityMessage, self).__init__(sender, tag=tag)
+        self.layer_artist = self.sender
+
+
 class LayerArtistDisabledMessage(Message):
     def __init__(self, sender, tag=None):
         super(LayerArtistDisabledMessage, self).__init__(sender, tag=tag)

glue/core/qt/layer_artist_model.py

@@ -23,7 +23,10 @@
 from glue.utils import nonpartial
 from glue.utils.qt import PythonListModel, PyMimeData
 from glue.core.hub import HubListener
-from glue.core.message import LayerArtistEnabledMessage, LayerArtistUpdatedMessage, LayerArtistDisabledMessage
+from glue.core.message import (LayerArtistEnabledMessage,
+                               LayerArtistUpdatedMessage,
+                               LayerArtistDisabledMessage,
+                               LayerArtistVisibilityMessage)
 
 
 class LayerArtistModel(PythonListModel):
@@ -211,6 +214,7 @@ def __init__(self, parent=None, hub=None):
         self.hub.subscribe(self, LayerArtistUpdatedMessage, self._update_viewport)
         self.hub.subscribe(self, LayerArtistEnabledMessage, self._layer_enabled_or_disabled)
         self.hub.subscribe(self, LayerArtistDisabledMessage, self._layer_enabled_or_disabled)
+        self.hub.subscribe(self, LayerArtistVisibilityMessage, self._layer_enabled_or_disabled)
 
     def _update_viewport(self, *args):
         # This forces the widget containing the list view to update/redraw,
@@ -339,7 +343,6 @@ def __init__(self, parent=None, layer_style_widget_cls=None, hub=None):
 
         self.disabled_warning = QtWidgets.QLabel()
         self.disabled_warning.setWordWrap(True)
-        self.disabled_warning.setAlignment(Qt.AlignJustify)
         self.padded_warning = QtWidgets.QWidget()
         warning_layout = QtWidgets.QVBoxLayout()
         warning_layout.setContentsMargins(20, 20, 20, 20)
@@ -370,10 +373,19 @@ def on_selection_change(self, layer_artist):
 
         if layer_artist in self.layout_style_widgets:
             if layer_artist.enabled:
-                self.layer_options_layout.setCurrentWidget(self.layout_style_widgets[layer_artist])
-                self.disabled_warning.setText('')
+                if layer_artist.visible:
+                    self.disabled_warning.setText('')
+                    self.layer_options_layout.setCurrentWidget(self.layout_style_widgets[layer_artist])
+                else:
+                    self.disabled_warning.setText('Layer is not currently visible. '
+                                                  'Click on the checkbox for this '
+                                                  'layer to make it visible')
+                    self.disabled_warning.setAlignment(Qt.AlignLeft)
+                    self.layer_options_layout.setCurrentWidget(self.padded_warning)
+
             else:
                 self.disabled_warning.setText(layer_artist.disabled_message)
+                self.disabled_warning.setAlignment(Qt.AlignJustify)
                 self.layer_options_layout.setCurrentWidget(self.padded_warning)
         else:
             self.layer_options_layout.setCurrentWidget(self.empty)

glue/viewers/common/layer_artist.py

@@ -3,6 +3,7 @@
 from glue.external.echo import keep_in_sync, CallbackProperty
 from glue.core.layer_artist import LayerArtistBase
 from glue.viewers.common.state import LayerState
+from glue.core.message import LayerArtistVisibilityMessage
 
 __all__ = ['LayerArtist']
 
@@ -33,5 +34,11 @@ def __init__(self, viewer_state, layer_state=None, layer=None):
         self._sync_zorder = keep_in_sync(self, 'zorder', self.state, 'zorder')
         self._sync_visible = keep_in_sync(self, 'visible', self.state, 'visible')
 
+        self.state.add_callback('visible', self._on_visibility_change)
+
+    def _on_visibility_change(self, *args):
+        if self.state.layer is not None and self.state.layer.hub is not None:
+            self.state.layer.hub.broadcast(LayerArtistVisibilityMessage(self))
+
     def __gluestate__(self, context):
         return dict(state=context.id(self.state))