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Web Component Guide

If you know that you are going to refer to a particular child of an existing context key

often, you can create a new key that short cuts the reference. For example:

agent = <host>/agent, where host is an object that has a property called agent.

This is also useful if you are building a container view and want to include children that

require particular keys that are not explicitly present.

Additional Context for an Instance

When adding a view to a container view, it sometimes happens that the available context

does not have the right information for the view that you want to include. In this case, it

is possible in the container view to selectively create the right context. This is called

additional context for an instance or instance context. The context is for that particular

instance of the view and is not available when you use the view somewhere else.

Note You would create the additional context of the view itself if you wanted it available to every

instance of the view.

Additional Context for a Flow

The progression from one view to another is called a flow. How the new view is made to

appear depends on the flow action. The types of flow actions are described in “Flow

Types” on page 115.

Often these views may have input requirements that exceed what is available in the

context of the component from which you are coming. In this case, it is possible to

define further Additional Context that applies to the flow.

Dynamic Context

Dynamic context is only available for some components, such as Bar or Pie Chart,

Cluster Bar Chart, Time Bar Chart, Time Plot Chart, Drop Down List, Filter, Radio

Button List, Row-Oriented Table, Tree, Tree Table, and Topology. The value of a

dynamic context item changes depending on what is being rendered at the time, such as

a row in a Row-Oriented table, or what is being selected, such as an item in a list. For

example, in the Row-Oriented Table the dynamic context key current Row is available.

When a row is processed for display, that row’s current Row value changes depending

on which row is currently being rendered.

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Dell Vizioncore Guía de usuario Pagina 126