Context

• To set segmentation tool mode passive on removing all segments from the segmentation.
• To activate segmentation tools on adding segments, activating segmentation having at least one segment, or switching between segmentation.
• This PR has been incorporated by FlyWheel.io.
• Close [Bug] Segmentation tool remains active after deleting all segments, and new segments cannot be added #4632

Changes & Results

Changes to

• Set segmentation tools to passive mode when all segments are removed from the segmentation.
• Activate segmentation tools when:
  1. Adding new segments.
  2. Activating a segmentation that contains at least one segment.
  3. Switching between segmentations that contain segments.
• Prevent -infinity segmentation index when adding a new segment after deleting all segments.

Results:

• Segmentation tools are disabled if the active segmentation does not contain any segments.
• Segmentation tools are reactivated when:
  1. Adding segments.
  2. Activating a segmentation with at least one segment.
  3. Switching between segmentations with segments.
• The user can add a new segment after deleting all segments from a segmentation.

Testing

• Verify that segmentation tools are disabled if the active segmentation does not contain any segments
• Verify that segmentation tools are active when adding a new segment, activating a segmentation with at least one segment, or switching between segmentations that contain segments.
• Verify user is able to add new segment after deleting all segments.

Checklist

PR

• My Pull Request title is descriptive, accurate and follows the
  semantic-release format and guidelines.

Code

• My code has been well-documented (function documentation, inline comments,
  etc.)

Public Documentation Updates

• The documentation page has been updated as necessary for any public API
  additions or removals.

Tested Environment

• OS:
• Node version:
• Browser: