Closes #701: Option to always show cable/interface labels on edges (#707)

* Added draw termination labels

netbox_topology_views/forms.py

@@ -37,7 +37,7 @@ class DeviceFilterForm(
         FieldSet(
             'group', 'ignore_cable_type', 'save_coords', 'show_unconnected', 'show_cables', 'show_wireless',
             'show_logical_connections', 'show_single_cable_logical_conns', 'show_neighbors',
-            'group_sites', 'group_locations', 'group_racks', 'group_virtualchassis', 'straight_cables', 'grid_size', 'node_label_items', name=_("Options")
+            'group_sites', 'group_locations', 'group_racks', 'group_virtualchassis', 'straight_cables', 'draw_termination_labels', 'grid_size', 'node_label_items', name=_("Options")
         ),
         FieldSet(
             'show_circuit', 'show_power', name=_("Additional filter-independent types (non-devices)")
@@ -318,6 +318,12 @@ class DeviceFilterForm(
             choices=BOOLEAN_WITH_BLANK_CHOICES
         )
     )
+    draw_termination_labels = forms.BooleanField(
+        label=_('Termination Labels'), required=False, initial=False,
+        widget=forms.Select(
+            choices=BOOLEAN_WITH_BLANK_CHOICES
+        )
+    )
     grid_size = forms.IntegerField(
         label=_('Grid Size'),
         required=False,
@@ -538,6 +544,7 @@ class IndividualOptionsForm(NetBoxModelForm):
                 'group_virtualchassis',
                 'draw_default_layout',
                 'straight_cables',
+                'draw_termination_labels',
                 'grid_size',
                 'node_label_items',
             ),
@@ -672,6 +679,13 @@ class IndividualOptionsForm(NetBoxModelForm):
         help_text=_('Enable this option if you want to draw cables as straight lines '
                     'instead of curves.')
     )
+    draw_termination_labels = forms.BooleanField(
+        label=('Termination Labels'),
+        required=False,
+        initial=False,
+        help_text=_('Enable this option if you want to draw a label on each '
+                    'cable end.')
+    )
     grid_size = forms.IntegerField(
         label=_('Grid Size'),
         required=True,
@@ -713,6 +727,6 @@ class IndividualOptionsForm(NetBoxModelForm):
             'save_coords', 'show_unconnected', 'show_cables', 'show_wireless',
             'show_logical_connections', 'show_single_cable_logical_conns', 'show_neighbors',
             'group_sites', 'group_locations', 'group_racks', 'group_virtualchassis',
-            'draw_default_layout', 'straight_cables', 'grid_size', 'node_label_items', 
+            'draw_default_layout', 'straight_cables', 'draw_termination_labels', 'grid_size', 'node_label_items', 
             'show_circuit', 'show_power'
         ]