Multiple selection ranges in Slick.CellSelectionModel

[Jérémy Clément]

Hello, I would like to select more than one range (with Ctrl and Alt keys, same as Excel)

eg 2 selections : 

> selector.getSelectedRanges();

[ Range {

       fromRow=4, 

       fromCell=18, 

       toRow=4, 

       toCell=10

  } , 

  Range {

      fromRow=8, 

      fromCell=1, 

      toRow=10, 

      toCell=4

  }

]

Is it possible ?

Thanks

[Michael Leibman]

The API supports this, but the CellSelectionModel lacks this functionality right now.  This isn't trivial since it needs to be smart about recognizing when a new range that intersects with an existing one is added, and break them apart in multiple non-intersecting ones.  I'm open to contributions ;)

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[Jérémy Clément]

I implemented multiple selection, but only addition. A cell may be selected multiple times, it must be considered when using.

• CTRL + CLICK: add to current cell selection
  
• SHIFT + CLICK: adjusted current selection size
  
• CTRL + DRAG: add selected cells to current selection
  
• SHIFT + DRAG: add selected cells to current selection
  

TODO:

• CTRL + CLICK / DRAG on selected cells: unselect
  
• Merge selected ranges

I see two solutions for unselect:

• split ranges around unselected cell
  
• count the number of times the cell is selected: pair = unselected, odd = selected
  

it is not urgent for me, but I'll have to do. So I'll share

[Jérémy Clément]

oops, I forgot to remove some lines :

you have to delete this lines

line 81 :

function abortSelection() {
   _selector.abort();
}

line 200 :

"abortSelection" : abortSelection,

OR DOWNLOAD THE CORRECTED FILE IN THE ATTACHMENT

Le mardi 28 mai 2013 10:33:33 UTC+2, Jérémy Clément a écrit :

[Jérémy Clément]

NEW VERSION !

new : 

• CTRL + CLICK / DRAG on selected cells: unselect
  
• Merge selected ranges

fixed :

• Cells can be selected one time only

todo :

• some bugs with CTRL + arrow keys
• algorithm optimization : reduce nested loops and group ranges for reduce size of response (actually : one range = one cell)

Le mardi 28 mai 2013 10:33:33 UTC+2, Jérémy Clément a écrit :