Method: AuthorEngine::CodeEditor::Cursor#move

Defined in:

lib/author_engine/code_editor/cursor.rb

#move(direction) ⇒ Object

# File 'lib/author_engine/code_editor/cursor.rb', line 300

def move(direction)
  pos = @text_input.caret_pos
  line = nil

  if direction == :up
    return if @active_line == 0
    line  = @newline_data.dig(@active_line-1)
    return unless line # no line at index
    # current_offset = column_at(@x, (@active_line), true) # current line offset
    above_offset = column_at(@x, (@active_line-1), true) # line up offset

    # right_offset = current_offset
    # right_offset = above_offset if current_offset >= above_offset
    right_offset = above_offset

    pos = (line[:position_end_of_line] - line[:text_length]) + right_offset

  elsif direction == :down
    return if @text_input.caret_pos == @text_input.text.size
    return unless @newline_data[@active_line+1]
    line  = @newline_data.dig(@active_line+1)
    return unless line # no line at index
    # current_offset = column_at(@x, (@active_line), true) # current line offset
    below_offset = column_at(@x, (@active_line+1), true) # line down offset

    # right_offset = current_offset
    # right_offset = below_offset if current_offset >= below_offset
    right_offset = below_offset

    pos = (line[:position_end_of_line] - line[:text_length]) + right_offset

  else
    raise ":up or :down please."
  end

  set_position(pos)
end