DOC

Qfm

CommandBuffer:
	A Buffer that has as its first element the name or ID of a Command and a list of files/directories to apply it to.
	It must provide a way to load a given CommandBuffer to a SharedMemory.

NOTE: Commands implemented should inherit CommandBuffer and define the virtual functions.

Qfm (UI):
	Shows to list widgets or may be two widgets with vertical layout.
	The basic idea is that is all driven by the keyboard (except the list selection for starters, may be).

	If the selected buffer is not empty, given the key pressed, there's a command associated to it, so it loads the IPC buffer 
	with the CommandBuffers.
	There a key that means "flush buffer in here", that basically does whatever is in the buffer in the current directory, and
	empties the buffer.

NOTE: may be the best way to handle interaction with a frontend is by qt signals, and a proxy object that connects those with the proper slot
NOTE: commands can be singletons
TODO: Make a debugging class

NOTE: Files and directory are named as items.

Shared memory note: only one buffer at a time can be hadled for now. But the buffer can be compused of several commands (although the first version will only handle one).

Workflow:
	Copy:
	There are items selected, they are copied to the common buffer, and the selected items in the current instance should now be unselected.

TODO:
	Core:
		- Clear buffer after operate [Mostly done]
		- Add a delete command.
		- For a cut command it could inherit from pastecommand and deletecommand and run them in that order.
		- Add a rename command.
		- Directory navigation. [Mostly done]
		- Persistent selection throught directory navigation
	UI:
		- Selected buffer keys to unselect. [Done. It should work if there's another buffer added]
		- Flexible properties to the ListItems to differenciate from cutted/coppied/etc items but the change hasn't been applied.
		- Easy to handle short cut key assigments to commands.
	GUI:
		- Rethink the handling of the buffer lists, may be vertical layouts isn't the best.
		- Style it a little bit better with css.