• Abstract
• How to register a subpanel
• How to implement a subpanel
• Messaging from a subpanel page to the background page
• Messaging from the background page to a subpanel page
• Drag and drop between your subpanel and TST
• Transfer drag data from a subpanel to TST
• Retrieve the drag data from TST, on a subpanel
• How to provide custom context menu on your subpanel
• Create and update menu items, and handle events
• Override the context
• Override browser's config about the context menu trigger
• Off topic: Behind the scene
• Why you need to use TST's API to operate context menu items?
• Why your addon needs to change browser's setting about context menu's trigger event?