horizon/openstack_dashboard/enabled/_2060_admin_instances_panel.py
David Lyle 8303782f1e Move Horizon to pure plugin loading only
The root cause of 1479018 was the mixed method for loading content in
horizon. This patch moves horizon to load purely from enabled files.
There are a couple of things that were required to allow this change.

1) Adding a mechanism, can_register() to horizon/base.py to handle the
configuration based loading checks that had been accumulating in the
panel.py files. This is an optional static method in Panel to
encapsulate such configuration (read settings) based panel loading
logic. And added testing for and documentation for this addition.

2) Create a numbering scheme for plugins. Moved the base dashboards to
_1000_project.py _2000_admin.py _3000_identity.py _5000_settings.py.
then populated the required panel_group and panel enabled files sparsely
in those ranges. The sparseness is to allow for future additions.
Additionally, I moved the already added Angular based panels next to
their Django counterparts.

Once the configuration loading was normalized, the bug reported in
1479018 was resolved and tests work with plugins panels in all
dashboards.

Close-Bug: #1479018
Partially implements: blueprint plugin-sanity

Change-Id: I657e7ce37b2593a901a859cebf3d6ff8ada91941
2015-08-03 14:49:31 -06:00

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Python

# The slug of the panel to be added to HORIZON_CONFIG. Required.
PANEL = 'instances'
# The slug of the dashboard the PANEL associated with. Required.
PANEL_DASHBOARD = 'admin'
# The slug of the panel group the PANEL is associated with.
PANEL_GROUP = 'admin'
# Python panel class of the PANEL to be added.
ADD_PANEL = 'openstack_dashboard.dashboards.admin.instances.panel.Instances'