Class: Salticid::Interface::HostView

Inherits:
View show all
Defined in:
lib/salticid/interface/host_view.rb

Instance Attribute Summary collapse

Attributes inherited from View

#height, #left, #top, #width

Instance Method Summary collapse

Methods inherited from View

#hide, #show

Methods included from Resizeable

#resize

Constructor Details

#initialize(interface, params = {}) ⇒ HostView

Returns a new instance of HostView.



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# File 'lib/salticid/interface/host_view.rb', line 7

def initialize(interface, params = {})
  @messages = []

  @scroll_position = -1

  super

  @host = params[:host]
  @host.on_log do |message|
    self << message
  end

  @state = nil
  @on_state_change = proc { |state| }
end

Instance Attribute Details

#messages ⇒ Object

Returns the value of attribute messages.



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# File 'lib/salticid/interface/host_view.rb', line 5

def messages
  @messages
end

#state ⇒ Object

Returns the value of attribute state.



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# File 'lib/salticid/interface/host_view.rb', line 5

def state
  @state
end

#window ⇒ Object

Returns the value of attribute window.



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# File 'lib/salticid/interface/host_view.rb', line 5

def window
  @window
end

Instance Method Details

#<<(message) ⇒ Object 



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# File 'lib/salticid/interface/host_view.rb', line 23

def <<(message)
  # Scroll if at bottom
  @scroll_position += 1 if @scroll_position == @messages.size - 1

  @messages << message

  if @state != message.severity
    @state = message.severity
    @on_state_change.call(@state)
  end
  
  render
end

#on_state_change(&block) ⇒ Object 



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# File 'lib/salticid/interface/host_view.rb', line 37

def on_state_change(&block)
  @on_state_change = block
end

#render ⇒ Object 



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# File 'lib/salticid/interface/host_view.rb', line 41

def render
  return if @hidden

  @window.clear

  lines_left = @height
  message_i = @scroll_position
  while message_i >= 0
    # Message
    message = @messages[message_i]
    message_i -= 1

    # Time
    time = message.time.strftime "%H:%M:%S"

    text = message.text
    color = Interface::COLOR_PAIRS[message.severity]
    
    offset = time.length + 1

    width = @width - offset
    lines = text.scan(/[^\n]{1,#{width}}/m)

    # Put lines in reverse
    i = lines.size
    while i > 0
      i -= 1
      line = lines[i]

      lines_left -= 1
      break if lines_left < 0

      if i.zero?
        # Put top line
        @window.setpos lines_left, 0
        @window.addstr time + ' '
        @window.attron Curses::A_BOLD
        @window.color_set color if color
        @window.addstr line
      else
        # Put hanging line
        @window.attron Curses::A_BOLD
        @window.color_set color if color
        @window.setpos lines_left, offset
        @window.addstr line
      end
      @window.color_set Interface::COLOR_PAIRS[:info] if color
      @window.attroff Curses::A_BOLD

      unless @window.cursor[1] == 0
        # Clear rest of line
        @window.clrtoeol
      end
    end
  end
  @window.refresh
end

#scroll(delta) ⇒ Object

Scrolls the window by delta messages



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# File 'lib/salticid/interface/host_view.rb', line 104

def scroll(delta)
  @scroll_position += delta
  if @scroll_position < 0
    @scroll_position = 0
  elsif @scroll_position >= @messages.size
    @scroll_position = @messages.size - 1
  end

  render
end

#shutdown ⇒ Object 



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# File 'lib/salticid/interface/host_view.rb', line 115

def shutdown
  @host.on_log do |message|
    puts message.text
  end
  @host = nil
end

#to_s ⇒ Object 



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# File 'lib/salticid/interface/host_view.rb', line 99

def to_s
  @host.name
end