The web pages files for the planets application can be classified into four groups.

• The master layout file — defines the layout and its variant features:
  • windowTitle appears in the browser title bar and tab
  • titlebar is the panel at the top of the page display
  • sidebar is the panel at the left of the page display
  • content is the panel at the bottom right of the page display
• The login page — has a titlebar and sidebar features that are different from the other pages.
• Other pages — all have the same titlebar and sidebar features.
• Composition files — are compositions for inclusion in the titlebar and sidebar features. There are two subgroups:
  • Compositions for the login page
  • Compositions for other pages

All of the pages use a <ui:composition> tag that references templates/masterLayout.xhtml. When a page needs non-default content for one of the parts it is specified with a <ui:define> tag. The name attribute of the tag matches the name attribute of one of the <ui:insert> tags in templates/masterLayout.xhtml.

The files in the sections/login folder provide <ui:composition> tags for the titlebar and the sidebar of the login page.

The files in the sections/planetarium folder provide <ui:composition> tags for the titlebar and the sidebar of all other pages.

The masterLayout.xhtml file defines the layout for all of the application pages. This is an ordinary XHTML file except for the ui:insert tags. Each one names a variant feature where individual pages may need to provide different content. The name attribute provides a name that the pages use to refer to a specific variant feature.

Some of the <ui:insert> tags have non-empty content. This defines the default content. The <ui:include> subtag is a mechanism for getting content from a <ui:composition> tag in another file.

Web Pages/templates/masterLayout.xhtml

There are two composition files for the login page:

• login/titlebar.xhtml
• login/sidebar.xhtml