Class: WebSvr::EmbeddedRenderer

Inherits:
Object
  • Object
show all
Defined in:
lib/web_svr/embedded_renderer.rb

Constant Summary collapse

HELPER = 
'helper'.freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(engine, web_svr_obj) ⇒ EmbeddedRenderer

Set up the web server.



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# File 'lib/web_svr/embedded_renderer.rb', line 23

def initialize( engine, web_svr_obj )
  @engine = engine
  @log = @engine.log

  @web_svr_obj = web_svr_obj
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method_name, *args) ⇒ Object

Handle a missing method by looking for a helper function. If there is one, then call it and return the result. If not, log an error and return nil.



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# File 'lib/web_svr/embedded_renderer.rb', line 103

def method_missing( method_name, *args )
  @log.debug "missing method '#{method_name}' with args #{args}"

  helper_pn = "#{HELPER}.#{method_name}"
  @log.debug "looking for function: #{helper_pn}"

  pn = Gloo::Core::Pn.new( @engine, helper_pn )
  obj = pn.resolve
  if obj
    @log.debug "found obj: #{obj.pn}"
    return obj.invoke args
  else
    @log.error "Function not found: #{helper_pn}"        
  end

  return nil
end

Instance Attribute Details

#engine ⇒ Object (readonly)

Returns the value of attribute engine.



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# File 'lib/web_svr/embedded_renderer.rb', line 13

def engine
  @engine
end

#log ⇒ Object (readonly)

Returns the value of attribute log.



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# File 'lib/web_svr/embedded_renderer.rb', line 13

def log
  @log
end

#web_svr_obj ⇒ Object (readonly)

Returns the value of attribute web_svr_obj.



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# File 'lib/web_svr/embedded_renderer.rb', line 13

def web_svr_obj
  @web_svr_obj
end

Instance Method Details

#apple_touch_icon_tag(name = 'apple-touch-icon.png', type = 'image/png') ⇒ Object

Render a Apple Touch Icon tag. By default the name is ‘apple-touch-icon.png’ and does not need to be provided if that is the correct file name.



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# File 'lib/web_svr/embedded_renderer.rb', line 51

def apple_touch_icon_tag( name = 'apple-touch-icon.png', type = 'image/png' )
  icon_path = "/#{Asset::ASSET_FOLDER}/#{Asset::IMAGE_FOLDER}/#{name}"
  published_name = @engine.running_app.obj.asset.published_name( icon_path )
  return "<link rel='apple-touch-icon' type='#{type}' href='#{published_name}' />"
end

#autenticity_token_tag ⇒ Object

Embed a hidden field with the autenticity token.



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# File 'lib/web_svr/embedded_renderer.rb', line 88

def autenticity_token_tag
  session_id = @engine.running_app.obj&.session&.get_session_id
  return Gloo::Objs::CsrfToken.get_csrf_token_hidden_field( session_id )
end

#css_tag(name) ⇒ Object

Render a stylesheet tag for the given stylesheet name.



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# File 'lib/web_svr/embedded_renderer.rb', line 79

def css_tag( name )
  css_path = "/#{Asset::ASSET_FOLDER}/#{Asset::STYLESHEET_FOLDER}/#{name}"
  published_name = @engine.running_app.obj.asset.published_name( css_path )
  return "<link rel='stylesheet' media='all' href='#{published_name}' />"
end

#favicon_tag(name = 'favicon.ico') ⇒ Object

Render a favicon tag. By default the name is ‘favicon.ico’ and does not need to be provided if that is the correct file name.



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# File 'lib/web_svr/embedded_renderer.rb', line 40

def favicon_tag( name = 'favicon.ico' )
  icon_path = "/#{Asset::ASSET_FOLDER}/#{Asset::IMAGE_FOLDER}/#{name}"
  published_name = @engine.running_app.obj.asset.published_name( icon_path )
  return "<link rel='shortcut icon' type='image/x-icon' href='#{published_name}' />"
end

#image_tag(img_name, properties = '') ⇒ Object

Render an image tag for the given image name. Include optional proterties as part of the tag.



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# File 'lib/web_svr/embedded_renderer.rb', line 61

def image_tag( img_name, properties = '' )
  image_path = "/#{Asset::ASSET_FOLDER}/#{Asset::IMAGE_FOLDER}/#{img_name}"
  published_name = @engine.running_app.obj.asset.published_name( image_path )
  return "<image src='#{published_name}' #{properties} />"
end

#js_tag(name) ⇒ Object

Render a script tag for the given script name.



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# File 'lib/web_svr/embedded_renderer.rb', line 70

def js_tag( name )
  js_path = "/#{Asset::ASSET_FOLDER}/#{Asset::JAVASCRIPT_FOLDER}/#{name}"
  published_name = @engine.running_app.obj.asset.published_name( js_path )
  return "<script src='#{published_name}'></script>"
end

#render(content, params) ⇒ Object

Render content with the given params. Params might be nil, in which case the content is returned with no changes.



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# File 'lib/web_svr/embedded_renderer.rb', line 131

def render content, params
  # If the params is nil, let's make it an empty hash.
  params = {} unless params

  # Get the binding context for this render.
  b = binding

  # Add the params to the binding context.
  params.each_pair do |key, value|
    b.local_variable_set key.to_sym, value
  end

  # Render in the current binding content.
  renderer = ERB.new( content )
  content = renderer.result( b )

  return content
end