Module: Selectable

Defined in:
lib/rbcurse/selectable.rb

Overview

give the ability to a list, to allow for selection of rows.

Constant Summary collapse

SELECT_CHAR = 
'>'

Instance Method Summary collapse

Instance Method Details

#do_clear_selection ⇒ Object

FIXME not clearing properly



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# File 'lib/rbcurse/selectable.rb', line 53

def do_clear_selection
  $log.debug " CALLED clear_sel "
  @selected.each {|sel| 
    $log.debug " CLAER for #{sel}"
    do_select(sel)}
end

#do_next_selection ⇒ Object 



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# File 'lib/rbcurse/selectable.rb', line 40

def do_next_selection
  return if @selected.length == 0 
  row = @selected.sort.find { |i| i > @prow }
  row ||= @prow
  @prow = row
end

#do_prev_selection ⇒ Object 



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# File 'lib/rbcurse/selectable.rb', line 46

def do_prev_selection
  return if @selected.length == 0 
  row = @selected.sort{|a,b| b <=> a}.find { |i| i < @prow }
  row ||= @prow
  @prow = row
end

#do_select(arow = @prow) ⇒ Object

This puts an > character on the first col of the selected row

Parameters:

  • index —

    of row in list, offset 0



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# File 'lib/rbcurse/selectable.rb', line 8

def do_select arow=@prow
  @implements_selectable = true
  win = get_window
  visual_index = row_visual_index arow
  sel = " "; r = arow+1; 
  @selected ||= []
  if @selected.include? arow
    @selected.delete arow
    @list_attribs[arow] = {:status=> " ", :bgcolor => nil}
   sel = " "; color = $datacolor
  else
    $log.debug("Adding #{arow} #{@select_mode}")
    do_clear_selection if @select_mode != 'multiple'
    @selected << arow
    # 2008-11-25 21:00 added this just to see if it make things better
    @list_attribs[arow] = {:status=> SELECT_CHAR, :bgcolor => $selectedcolor}
   sel = SELECT_CHAR; color = $selectedcolor
  end
  # remember to erase these skidmarks when the user scrolls
  win.printstring @row+1+visual_index, @col+@left_margin-1, sel, color unless visual_index.nil?
  # fire ListComboSelect event, added TODO to test out.
  fire_handler :LIST_COMBO_SELECT, arow
end

#get_selected_data ⇒ Object Also known as: get_selected_items 



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# File 'lib/rbcurse/selectable.rb', line 59

def get_selected_data
  return nil if @selected.nil?
  ret = []
  list = get_content
  @selected.each { |sel| ret << list[sel] }
  return ret
end

#row_visual_index(arow) ⇒ Object

is the row in view, if so, return index, else nil



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# File 'lib/rbcurse/selectable.rb', line 32

def row_visual_index arow
  if arow >= @toprow and arow <= @toprow+@scrollatrow
    $log.debug "return visual #{arow-@toprow} "
    return arow-@toprow
  end
    $log.debug "return visual NIL #{arow-@toprow} "
  nil
end

#selectable_handle_key(ch) ⇒ Object

XXX in case of single selection popup, only ENTER selects and it closes too firing PRESS. in case of multiple selection and popup, space selects and fires COMBO_SELECT, but enter closes and fires a different event, PRESS. This needs to be regularized.



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# File 'lib/rbcurse/selectable.rb', line 71

def selectable_handle_key ch
  begin
    case ch
    when ?;.getbyte(0), 32  # x no more selecting since we now jump to row matching char 2008-12-18 13:13 
      return if is_popup and @select_mode == 'single' # not allowing select this way since there will be a difference 
      # between pressing ENTER and space. Enter is trapped by Listbox!
      do_select
    when ?'.getbyte(0)
      $log.debug "insdie next selection"
      do_next_selection if @select_mode == 'multiple'
    when ?".getbyte(0)
      $log.debug "insdie prev selection"
      do_prev_selection if @select_mode == 'multiple'
    when ?\C-e.getbyte(0)
      do_clear_selection if @select_mode == 'multiple'
    else
      return :UNHANDLED
    end
  ensure
    #### post_key  2009-01-07 13:43 
  end
  0
end