Using ScriptRunner, you can customise the web UI through dynamically adding web fragments. See the Atlassian documentation on web fragments for Bitbucket.
You can use script fragments to:
Show an announcement banner
Show different banners for admins, non-admins, and users who are not logged in
Add buttons to the Tools menu for particular pages
This is accomplished by adding a UI customization at Administrator → Script Fragments.
There are several different types of fragment built-in scripts available:
Web Item - A link or button that appears in your chosen location.
Web Panel - Displays additional information in a panel.
Web Section - Defines new locations to add items.
- Hide UI Element - Hide any system web item or panel, including ones provided by plugins.
- Web Item Provider - Generate web items according to the current circumstance.
- XML Module Item - Work around limitations from plugins.
As always, you should test in a development environment before deploying to your production environment.
Using Web Fragments
You can add, execute, edit, and delete the scripts from Administrator > Script Fragments. After restarting your instance, the UI customisations remain in place. Some scripts are reloaded automatically, but you can edit the script item and click update if they are not.
All of the built-in scripts produce XML that is similar, but not interchangeable with, XML found in a plugin descriptor. You will notice that, for usability reasons, the forms do not provide all the possible configuration elements available in plugins. For example, the web item script does not give you the option to provide a tooltip for the web item link, a velocity context provider, or an icon URL.
You can work around this limitation using the Raw XML Module script.
Finding the locations and/or sections for web items, web sections, and web panels can be difficult. The Fragment Locator tool is designed to show you the places where you can put these fragments. You can enable (and disable) it from the main Script Fragments page.
This is how the Fragment Locator tool works on the screen:
Enabling the Fragment Locator changes the UI appearance for every user, so it should not be enabled in a production system.