Dockable framework

[DeflatedPickle]

A built-in dockable framework (like DockingFrames for Swing) would be helpful for users to get a program looking how they prefer.

• Draggable mini-windows, that can be placed beside other mini-windows (on their north, east, west or south sides)
• Mini-window headers (these are used to drag around the mini-window, the components should be customisable in their position)
  • Pin (optional, to lock the position of the mini-window)
  • Title
  • Minimize (optional)
  • Maximize (optional)
  • Close (optional)
• Drag listener for mini-windows being dragged over other mini-windows, putting the original mini-window in a tab with another tab for the new mini-window
• Border layout (to contain tabbed mini-windows, that will expand to cover a percentage of the whole window. These tabs are made when you drag a tab to either the north, east, south or west)
• Save layout
• Load layout

This issue depends on;

• Needs JSplitPane equivalent #80
• Create tabbed panel #60
• Drag-and-drop handlers for components #119