Class: HandlebarsAssets::HandlebarsTemplate

Inherits:
Tilt::Template
  • Object
show all
Includes:
Unindent
Defined in:
lib/handlebars_assets/handlebars_template.rb

Defined Under Namespace

Classes: TemplatePath

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Unindent

#unindent

Class Method Details

.default_mime_type ⇒ Object 



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# File 'lib/handlebars_assets/handlebars_template.rb', line 19

def self.default_mime_type
  'application/javascript'
end

Instance Method Details

#compile_default(source) ⇒ Object 



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# File 'lib/handlebars_assets/handlebars_template.rb', line 73

def compile_default(source)
  template =
    if HandlebarsAssets::Config.precompile
      compiled_hbs = Handlebars.precompile(source, HandlebarsAssets::Config.options)
      "Handlebars.template(#{compiled_hbs})"
    else
      "Handlebars.compile(#{JSON.dump(source)})"
    end

  template_namespace = HandlebarsAssets::Config.template_namespace

  if HandlebarsAssets::Config.amd?
    handlebars_amd_path = HandlebarsAssets::Config.handlebars_amd_path
    if HandlebarsAssets::Config.amd_with_template_namespace
      if @template_path.is_partial?
        unindent <<-PARTIAL
          define(['#{handlebars_amd_path}'],function(Handlebars){
            var t = #{template};
            Handlebars.registerPartial(#{@template_path.name}, t);
            return t;
          ;})
        PARTIAL
      else
        unindent <<-TEMPLATE
          define(['#{handlebars_amd_path}'],function(Handlebars){
            return #{template};
          });
        TEMPLATE
      end
    else
      if @template_path.is_partial?
        unindent <<-PARTIAL
          define(['#{handlebars_amd_path}'],function(Handlebars){
            var t = #{template};
            Handlebars.registerPartial(#{@template_path.name}, t);
            return t;
          ;})
        PARTIAL
      else
        unindent <<-TEMPLATE
          define(['#{handlebars_amd_path}'],function(Handlebars){
            this.#{template_namespace} || (this.#{template_namespace} = {});
            this.#{template_namespace}[#{@template_path.name}] = #{template};
            return this.#{template_namespace}[#{@template_path.name}];
          });
        TEMPLATE
      end
    end
  else
    if @template_path.is_partial?
      unindent <<-PARTIAL
        (function() {
          Handlebars.registerPartial(#{@template_path.name}, #{template});
        }).call(this);
      PARTIAL
    else
      unindent <<-TEMPLATE
        (function() {
          this.#{template_namespace} || (this.#{template_namespace} = {});
          this.#{template_namespace}[#{@template_path.name}] = #{template};
          return this.#{template_namespace}[#{@template_path.name}];
        }).call(this);
      TEMPLATE
    end
  end
end

#compile_ember(source) ⇒ Object 



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# File 'lib/handlebars_assets/handlebars_template.rb', line 69

def compile_ember(source)
  "window.Ember.TEMPLATES[#{@template_path.name}] = Ember.Handlebars.compile(#{JSON.dump(source)});"
end

#evaluate(scope, locals, &block) ⇒ Object 



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# File 'lib/handlebars_assets/handlebars_template.rb', line 48

def evaluate(scope, locals, &block)
  source =
    if @engine
      @engine.render(scope, locals, &block)
    else
      data
    end

  # remove trailing \n on file, for some reason the directives pipeline adds this
  source.chomp!($/)

  # handle the case of multiple frameworks combined with ember
  # DEFER: use extension setup for ember
  if (HandlebarsAssets::Config.multiple_frameworks? && @template_path.is_ember?) ||
     (HandlebarsAssets::Config.ember? && !HandlebarsAssets::Config.multiple_frameworks?)
    compile_ember(source)
  else
    compile_default(source)
  end
end

#initialize_engine ⇒ Object 



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# File 'lib/handlebars_assets/handlebars_template.rb', line 23

def initialize_engine
  begin
    require 'haml'
  rescue LoadError
    # haml not available
  end
  begin
    require 'slim'
  rescue LoadError
    # slim not available
  end
end

#prepare ⇒ Object 



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# File 'lib/handlebars_assets/handlebars_template.rb', line 36

def prepare
  @template_path = TemplatePath.new(@file)
  @engine =
    if @template_path.is_haml?
      Haml::Engine.new(data, HandlebarsAssets::Config.haml_options)
    elsif @template_path.is_slim?
      Slim::Template.new(HandlebarsAssets::Config.slim_options) { data }
    else
      nil
    end
end