(4a -> 4) Add menu to assign an `Instance` to an `InstanceGroup`

[ramizhajj1]

Add menu to assign an Instance to an InstanceGroup

• [x] Create a sessionsMenu named "Sessions" (similar to the tracksMenu)
• [x] Add a self.inst_groups_menu attribute to the MainWindow that adds a menu to the sessionsMenu called "Set Instance Group" (similar to self.track_menu)
• [x] Enable/disable the self.inst_groups_menu when has_selected_instance == True (similar to self.track_menu)
• [x] Create a MainWindow._update_sessions_menu method that takes in self and frame_idx, then retrieves the session: Optional[RecordingSession] = self.state["session"] and the frame_group: FrameGroup = session.frame_groups[frame_idx]. First clear the self.inst_groups_menu. Then, enumerate through all instance_groups in frame_group.instance_groups: List[InstanceGroup]. For the first 9 InstanceGroups use the key_command = Qt.SHIFT + Qt.Key_0 + inst_group_ind + 1 (otherwise use a default key_command = ""). For all instance_groups, add a self.inst_groups_menu action with name instance_group.name, callback lambda x=instance_group: self.commands.setInstanceGroup(x), and shortcut of key_command. Outside the enumeration, add a "New Instance Group" action to the self.inst_groups_menu with name "New Instance Group", callback self.commands.addInstanceGroup, and hotkey Qt.SHIFT + Qt.Key_0. Very similar to MainWindow._update_track_menu.
• [x] Add a CommandContext.setInstanceGroup(self, instance_group: Optional[InstanceGroup]) method that executes the SetSelectedInstanceGroup class with input instance_group=instance_group (see CommandContext.setInstanceTrack).
• [x] Add a CommandContext.addInstanceGroup(self) method that executes the AddInstanceGroup class (see CommandContext.addTrack).
• [x] In sleap/gui/commands.py add a SetSelectedInstanceGroup class that subclasses EditCommand. Add a SetSelectedInstanceGroup.do_action(context, params) staticmethod that first retrieves the selected_instance = context.state[selected_instance], frame_idx: int = context.state["frame_idx"], video: Video = context.state["video"], session: RecordingSession = context.state["session"], frame_group: FrameGroup = session.frame_groups.get(frame_idx, None), and camera = session.get_camera(video=video). You will need to use frame_group = session.new_frame_group(frame_idx=frame_idx) if frame_group is None. Then, use frame_group.add_instance(instance=selected_instance, camera=camera, instance_group=instance_group) to add the selected_instance to the instance_group (and frame_group). Similar to the SetSelectedInstanceTrack class.
• [x] In sleap/gui/commands.py add a AddInstanceGroup class that subclasses EditCommand. Add a AddInstanceGroup.do_action(context, params) staticmethod that first retrieves the frame_idx: int = context.state["frame_idx"], session: RecordingSession = context.state["session"], and frame_group: FrameGroup = session.frame_groups[frame_idx]. Then, use frame_group.add_instance_group(instance_group=None) to create and add a new empty InstanceGroup to the frame_group. Similar to the AddTrack class.

Using the workflow above (but with less detailed write-up), please also:

• [x] Add a "Delete Instance Group" menu that populates and functions similarly to the "Set Instance Group" menu.

**Figure 2**: GUI elements for assigning `Instance`s to `InstanceGroup`s will be similar to how we assign `Instance`s to `Track`s. ## Summary by CodeRabbit - **New Features** - Added a workaround to manage OpenCV package versions across different platforms. - Introduced new keyboard shortcuts for easier navigation within the application. - Enhanced functionalities for managing recording sessions and instance groups in the GUI. - **Bug Fixes** - Fixed typo and improved error handling in various modules. - **Documentation** - Updated installation instructions to include steps for handling specific OpenCV versions. - Added comments to clarify the use of certain testing tools. - **Refactor** - Reorganized code and updated method signatures in several modules to improve performance and maintainability. - **Tests** - Added new tests for camera and dataset functionalities to ensure reliability.

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Walkthrough

This update involves a significant overhaul focused on managing OpenCV versions and enhancing the functionality of the SLEAP application. It includes a hack to ensure compatibility with a specific OpenCV version across different platforms and scripts. Additionally, new features and improvements in the GUI, error handling, and data processing for camera and dataset management have been added, alongside updated testing frameworks to support these changes.

Changes

Files	Change Summary
.conda/bld.bat, .conda/build.sh, .conda_mac/build.sh	Added hack to manage OpenCV versions.
.github/workflows/ci.yml	Updated CI workflow to handle OpenCV version.
dev_requirements.txt	Added comment on pytest-xvfb.
docs/installation.md	Included instructions for OpenCV version management hack.
environment.yml, environment_no_cuda.yml, requirements.txt	Updated OpenCV dependencies.
sleap/config/shortcuts.yaml	Added new keyboard shortcuts.
sleap/gui/..., sleap/io/..., sleap/instance.py	Enhanced GUI and backend functionalities for better management.
tests/...	Expanded tests to cover new functionalities.

🐰✨ In the code's garden, changes bloom, A rabbit hops through, room by room. With a hack here and a tweak there, New paths unfold with utmost care. Cheers to the craft, so deftly spun, Under the code moon, or the script sun. 🌙🌞 🐰✨

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[codecov[bot]]

Codecov Report

Attention: Patch coverage is 79.06977% with 18 lines in your changes are missing coverage. Please review.

Project coverage is 74.12%. Comparing base (3cb6fc7) to head (d39b9f2).

:exclamation: Current head d39b9f2 differs from pull request most recent head 22e3bdb. Consider uploading reports for the commit 22e3bdb to get more accurate results

Files	Patch %	Lines
sleap/gui/commands.py	77.08%	11 Missing :warning:
sleap/gui/app.py	73.91%	6 Missing :warning:
sleap/io/cameras.py	93.33%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## liezl/add-gui-elements-for-sessions #1747 +/- ## ======================================================================= + Coverage 74.11% 74.12% +0.01% ======================================================================= Files 135 135 Lines 25103 25182 +79 ======================================================================= + Hits 18605 18667 +62 - Misses 6498 6515 +17 ```

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