Adding 'snippet' tab to parameter datatype signature UI

This new section displays how a complex datatype should look like providing some sample code for the developer using Swagger.

src/main/coffeescript/view/ParameterView.coffee

@@ -7,6 +7,13 @@ class ParameterView extends Backbone.View
     template = @template()
     $(@el).html(template(@model))
 
+    console.log @model
+    if @model.sampleJSON
+        signatureView = new SignatureView({model: @model, tagName: 'div'})
+        $('.model-signature', $(@el)).append signatureView.render().el
+    else
+        $('.model-signature', $(@el)).html(@model.signature)
+
     @
 
   # Return an appropriate template based on if the parameter is a list, readonly, required

src/main/coffeescript/view/SignatureView.coffee

@@ -0,0 +1,43 @@
+class SignatureView extends Backbone.View
+  events: {
+  'click a.description-link'       : 'switchToDescription'
+  'click a.snippet-link'           : 'switchToSnippet'
+  'mousedown .snippet'          : 'snippetToTextArea'
+  }
+
+  initialize: ->
+
+  render: ->
+    template = @template()
+    $(@el).html(template(@model))
+
+    @switchToDescription()
+
+    @
+
+  template: ->
+      Handlebars.templates.signature
+
+  # handler for show signature
+  switchToDescription: (e) ->
+    e?.preventDefault()
+    $(".snippet", $(@el)).hide()
+    $(".description", $(@el)).show()
+    $('.description-link', $(@el)).addClass('selected')
+    $('.snippet-link', $(@el)).removeClass('selected')
+    
+  # handler for show sample
+  switchToSnippet: (e) ->
+    e?.preventDefault()
+    $(".description", $(@el)).hide()
+    $(".snippet", $(@el)).show()
+    $('.snippet-link', $(@el)).addClass('selected')
+    $('.description-link', $(@el)).removeClass('selected')
+
+  # handler for snippet to text area
+  snippetToTextArea: (e) ->
+    e?.preventDefault()
+    textArea = $('textarea', $(@el.parentNode.parentNode.parentNode))
+    if $.trim(textArea.val()) == ''
+        textArea.val(@model.sampleJSON)
+