TabMatrix: bugs and to do

OK - truncate titles when too long for available space
- doesn't like more than one row
  ______ _____
_/______Y_____|
 Y      Y     \
- problem with display (garbage) when loosing firstResponder
OK - problem when having only one tab:
 _____
/     :
OK - Double width horizontal white line under "disabled" cells
- should change row order when clicking on upper rows?
OK - outline of left part when disabled
OK - outline of upper part missing
OK - height of a cell is not an integer value
OK - shows if firstResponder (dotted outline)
NO NEED - height proportional to font height
- do not draw anything for unused tab indexes
- implement methods like EOPopupAssociation methods (setTitles, ...)
OK - title alignement
OK - allow to set font to matrix or cells
OK - allow different fonts, styles, ...
OK - resize matrix cells if setFont to matrix
- set max cols -> autocalculate matrix size when adding a list of titles
OK - also allows images -> like buttonCells
- allow vertical tabView
- allow row reordering
OK - Don't resize tabHeight according to font; let user do it manually -> don't call/subclass setFont:
OK - use #define for STRICT_OPENSTEP (attributed strings, first responder, ...)
- Do not select automatically the firstResponder: select it when clicked, or when <SPACE> or <RETURN> is pressed.
	-> modify isSelected by checking also if isHighlighted
- Inspector: background color, draw background (uniquement si NSMatrix est sous-classee!)
OK - use NSControlColors (+colorWithDevice:White:alpha:)

Pour l'orientation right ou left, on peut utiliser PSrotate et PStranslate avant de dessiner la ButtonCell -> affiche verticalement!