Method: CDK::SCALE#validEditPosition

Defined in:
lib/cdk/scale.rb

#validEditPosition(new_position) ⇒ Object

Check if the cursor is on a valid edit-position. This must be one of the non-blank cells in the field.



183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
 
# File 'lib/cdk/scale.rb', line 183

def validEditPosition(new_position)
  if new_position <= 0 || new_position >= @field_width
    return false
  end
  if self.moveToEditPosition(new_position) == Ncurses::ERR
    return false
  end
  ch = @field_win.winch
  if ch.chr != ' '
    return true
  end
  if new_position > 1
    # Don't use recursion - only one level is wanted
    if self.moveToEditPosition(new_position - 1) == Ncurses::ERR
      return false
    end
    ch = @field_win.winch
    return ch.chr != ' '
  end
  return false
end