[Bf-blender-cvs] [2ce2bffc4d8] master: Fix T94295: VSE fades error when no suitable sequences selected

[Philipp Oeser]

Commit: 2ce2bffc4d8fd153494dad28d71511b7429e9a73
Author: Philipp Oeser
Date:   Tue Dec 21 13:42:08 2021 +0100
Branches: master
https://developer.blender.org/rB2ce2bffc4d8fd153494dad28d71511b7429e9a73

Fix T94295: VSE fades error when no suitable sequences selected

This errored out in two scenarios:
- current frame not in strips framerange (this was reported)
- no strips selected at all

Now handle these cases properly in the operator and give appropriate
report info.

Maniphest Tasks: T94295

Differential Revision: https://developer.blender.org/D13642

===================================================================

M	release/scripts/startup/bl_operators/sequencer.py

===================================================================

diff --git a/release/scripts/startup/bl_operators/sequencer.py b/release/scripts/startup/bl_operators/sequencer.py
index 26f1c12d2b8..1a56e77b7b7 100644
--- a/release/scripts/startup/bl_operators/sequencer.py
+++ b/release/scripts/startup/bl_operators/sequencer.py
@@ -216,11 +216,19 @@ class SequencerFadesAdd(Operator):
             scene.animation_data.action = action
 
         sequences = context.selected_sequences
+
+        if not sequences:
+            self.report({'ERROR'}, "No sequences selected")
+            return {'CANCELLED'}
+
         if self.type in {'CURSOR_TO', 'CURSOR_FROM'}:
             sequences = [
                 strip for strip in sequences
                 if strip.frame_final_start < scene.frame_current < strip.frame_final_end
             ]
+            if not sequences:
+                self.report({'ERROR'}, "Current frame not within strip framerange")
+                return {'CANCELLED'}
 
         max_duration = min(sequences, key=lambda strip: strip.frame_final_duration).frame_final_duration
         max_duration = floor(max_duration / 2.0) if self.type == 'IN_OUT' else max_duration