Renders a zone with variables from the abstract output into an ezcMvcResponse object.

Are implemented by inheriting from ezcMvcViewHandler.

The result can be re-used in following zones.

The last view handler's process() method is special.

ezcMvcTemplateViewHandler: uses the template component to render result objects

ezcMvcPhpViewHandler: uses PHP files to render result objects

ezcMvcJsonViewHandler: renders result objects as JSON

ezcMvcFeedViewHandler: uses XML feeds to render result objects