Class: Charming::Presentation::Components::TextArea

Inherits:
Charming::Presentation::Component show all
Defined in:
lib/charming/presentation/components/text_area.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from View

#focused?, #layout_assigns

Constructor Details

#initialize(value: "", placeholder: "", width: nil, height: nil, cursor: nil, offset: 0, preferred_column: nil) ⇒ TextArea

Returns a new instance of TextArea.



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# File 'lib/charming/presentation/components/text_area.rb', line 9

def initialize(value: "", placeholder: "", width: nil, height: nil, cursor: nil, offset: 0, preferred_column: nil)
  super()
  @value = value.dup
  @placeholder = placeholder
  @width = width
  @height = height
  @cursor = cursor || @value.length
  @offset = offset
  @preferred_column = preferred_column
  clamp_position
  ensure_cursor_visible
end

Instance Attribute Details

#cursor ⇒ Object (readonly)

Returns the value of attribute cursor.



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# File 'lib/charming/presentation/components/text_area.rb', line 7

def cursor
  @cursor
end

#offset ⇒ Object (readonly)

Returns the value of attribute offset.



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# File 'lib/charming/presentation/components/text_area.rb', line 7

def offset
  @offset
end

#preferred_column ⇒ Object (readonly)

Returns the value of attribute preferred_column.



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# File 'lib/charming/presentation/components/text_area.rb', line 7

def preferred_column
  @preferred_column
end

#value ⇒ Object (readonly)

Returns the value of attribute value.



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# File 'lib/charming/presentation/components/text_area.rb', line 7

def value
  @value
end

Instance Method Details

#handle_key(event) ⇒ Object 



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# File 'lib/charming/presentation/components/text_area.rb', line 22

def handle_key(event)
  key = Charming.key_of(event)
  return :handled if newline_event?(event) && insert("\n")
  return :handled if character_event?(event) && insert(event.char)

  case key
  when :left then move_left
  when :right then move_right
  when :up then move_up
  when :down then move_down
  when :home then move_home
  when :end then move_end
  when :backspace then delete_before_cursor
  when :delete then delete_at_cursor
  when :page_up then page_up
  when :page_down then page_down
  else return nil
  end

  :handled
end

#render ⇒ Object 



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# File 'lib/charming/presentation/components/text_area.rb', line 44

def render
  visible_lines.map { |line| render_line(line) }.join("\n")
end