Class: Slinky::Listener

Inherits:
Object
  • Object
show all
Defined in:
lib/slinky/listener.rb

Instance Method Summary collapse

Constructor Details

#initialize(manifest, livereload) ⇒ Listener

Returns a new instance of Listener.



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# File 'lib/slinky/listener.rb', line 5

def initialize manifest, livereload
  @manifest = manifest
  @livereload = livereload
end

Instance Method Details

#handle_add(files) ⇒ Object 



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# File 'lib/slinky/listener.rb', line 49

def handle_add files
  begin
    @manifest.add_all_by_path files
  rescue
    puts "Unable to add file: #{$!}"
  end
end

#handle_mod(files) ⇒ Object 



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# File 'lib/slinky/listener.rb', line 41

def handle_mod files
  begin
    @manifest.update_all_by_path files
  rescue
    puts "Unable to update file: #{$!}"
  end
end

#handle_rem(files) ⇒ Object 



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# File 'lib/slinky/listener.rb', line 57

def handle_rem files
  begin
    @manifest.remove_all_by_path files
  rescue
    puts "Unable to remove file: #{$1}"
  end
end

#run ⇒ Object 



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# File 'lib/slinky/listener.rb', line 10

def run
  manifest_md5 = @manifest.md5
  listener = Listen.to(@manifest.dir) do |mod, add, rem|

    EM.next_tick {
      handle_mod(mod) if mod.size > 0
      handle_add(add) if add.size > 0
      handle_rem(rem) if rem.size > 0
      
      files = (mod + add + rem).map{|path|
        mpath = Pathname.new(path)\
          .relative_path_from(Pathname.new(@manifest.dir).expand_path).to_s
        mf = @manifest.find_by_path(mpath, false).first
        if mf
          mf.output_path
        else
          nil
        end
      }.compact

      # only reload if something's actually changed
      if manifest_md5 != @manifest.md5 && files.size > 0
        manifest_md5 = @manifest.md5
        @livereload.reload_browser(files)
      end
    } if @livereload
  end
  listener.start
  listener
end