RTE Integration

Prerequisites

1. Your user-interface allows placing script-tags into a web page.

2. You have a url where the Cubbles RTE webpackage is available and your web page has access to it.

Integration

Simply put two <script> tags into the webpage (into the head or the body) to make the RTE (the Cubbles RunTime Extension) available on the client side:

  <script src="[base-url]/[store]/cubx.core.rte@3.0.0/webcomponents/custom-elements-es5-adapter.js"></script>
  <script src="[base-url]/[store]/cubx.core.rte@3.0.0/webcomponents/webcomponents-lite.js"> <script src="[base-url]/[store]/cubx.core.rte@3.0.0/crc-loader/js/main.js"></script>

Scripts

1. custom-elements-es5-adapter: Allows compiling and serving custom components using ES5, so that the browsers that don't support ES6 work correctly.

2. webcomponents-lite: Load some polyfills to enable browsers to work with webcomponents.

3. crc-loader: It provides the entry-point for RTE, that is, it makes RTE available on client side.

Placeholders

Note that the source urls of the scripts presented above have two placeholders:

• [base-url]: The url of the Cubbles Base you will use.

• [store]: The name of the store where your webpackages (including the RTE webpackage) are available.

CRC-Loader optional attributes

• data-crcinit-loadcif ("true"|"false"; default="true"): Is true, the Component-Interaction-Framework (CIF) is loaded. If you are using the RTE to load artifacts of type "utility" you can set this attribute to false since no components will be processed.

<script src="<crc-loader>" data-crcinit-loadcif="false"></script>

• data-cubx-startevent (default="DOMContentLoaded"): Set the event that triggers the RTE to

  • parse top-level dependencies from the document,

  • resolve transitive dependencies,

  • enable the browser to load the dependencies

  • and trigger the CIF to start working.

It might be useful to use another event - e.g. if the content containing cubbles components is included in the document in an asynchronous way.

<script src="<crc-loader>" data-cubx-startevent="MyCubxStartEvent"></script>

Configuration (optional)

A page developer can (optionally) provide a configuration object for the Cubbles RTE within the namespace window.cubx. He/she can define rootDependencies for a web page using the CRCInit property to load an artifact:

1. defined in a dependency declaration, which is done regardless of whether this artifact is required when the web page is initially loaded.

2. from the webpackage in the exact given version.

<script>
    window.cubx = {
        CRCInit: {
            rootDependencies: [ { webpackageId: "demo-package@1.0" artifactId: "util1" } ]
        }
    }
</script>

Important information about multiple versions of the same component

Loading the same artifact multiple times (perhaps in different versions) leads to an unpredictable behaviour within the browser --also if they have been referred from different components--. In this context, each component would work as programmed, but browsers do not provide isolated runtimes for different components (and components' versions).

Therefore the RTE (since version 2.1) has a dependency resolution mechanism implemented that prefers the webpackage version with the shortest path within the page dependency tree.

To affect the dependency tree specified artifacts can be added and/or excluded by configuration. The combination of exclusion and addition of dependencies allows you to simply override/replace any version of an artifact.