HTML utilities allow to add and extend HTML tags and add resources which are common in web applications e.g. a company logo embedded into the UI application as a image resource.

Example File (Builder project Advanced Modeling/UI):

<your example path>\Advanced Modeling\UI\uml\uiHTML.xml

Custom HTML Attributes

The HTML tags generated consist of the basic construction e.g. <img src=""> . The HTML image can have further attributes to control the image through setting a width="" and a height="" . This can be achieved using CSS and referencing to the CSS Class parameter of the <<HTMLElement>> or it can be set as additional HTML attributes in the Attributes section.
Another example could be a Text Field which needs a limitation on the number of characters that can be written <input name="name" type="text" maxlength="30">. This is achieved by adding the maxlength="30" in the Attributes section.

Images

To be able to embed images, a HTML image tag (<img src="path/to/image.png">) needs to be specified. This is done by assigning the <<HTMLElement>> stereotype on a label element. Assign the following settings within the specifications:

The Text attribute as well as the Name work as a simple placeholder and element names to identify and place the image within a UI structure. The attribute Element Name defines the actual HTML tag name <img src="path/to/image.png"> and the Attributes attribute defines the HTML image tag source to the image <img src="path/to/image.png">. A CSS Class can be assigned for more control over the image via CSS.

Download Link to a Resource

The stereotype <<UIResourceLink>> on <<Hyperlink>> element enables to select an imported resource such as a file and place it as a downloadable document within the user interface.

To make the document open in a new window, the stereotype <<HTMLElement>> can be additionally assigned to the <<Hyperlink>> element and within the specifications the attribute target="_blank" can be set.

Providing Needed Resources

Sometimes a resource is needed for the UI to work properly, e.g. a file or an image. To bundle such resources with the service and to directly access them, you can import them as a file resource to the corresponding UI service. That makes them available in folder repository/htdocs of the service.
To do this, follow these three steps:

1. Import the resource as a file resource into your Builder project (refer to Importing File Resources for more information on how to do that).
   During import, select the appropriate resource type (e.g. a BinaryFile in case of an image). You need to make sure that deploy is checked, if you want to deploy the resource together with the service.
2. Drag the imported alias from the folder Resources of the imported file resource onto the component diagram. Then, draw a use dependency from the UIRepository (residing within the service composite) to the file alias.
   
3. You can access the resource directly without specifying a path. In case of an image. it would be via src=<name of the image>.

HTML Metadata

HTML metadata tags hold various information and instructions which are inserted into the head part of a web page. Other than the well known title tag, information in the head area of your web pages is not visible on the page viewed in browsers. Instead the meta information in the head area is used to communicate information not to be concerned by the web application user. A Meta tag for example can tell a browser which character set is needed to view the served content or a description meta tag can hold an abstract of the pages content.
The meta information is held by the <<UI>> controller having the additional stereotype <<HTMLMeta>>. The meta tags can then be added within the <<UI>> controllers attribute Meta Attributes. Multiple meta tags can be defined.