== <phase> ==

A phase is like a group of input controls, but it represents a whole page within the graphical interface.  A complicated tool may have too many controls to fit on one page, even if you use groups.  Or, it may have a series of tasks that must be linked together to form a complete analysis.  Each page of input is represented by a phase.

Note that instead of a ''Simulate button'', the phases are arranged one after another, in a ''Next'', ''Next'', ''Next'' manner.  The very last ''Next'' operation is ''Simulate''.

[[rpimage(zoo_phase1.gif)]] [[BR]]
[[rpimage(zoo_phase2.gif)]] [[BR]]
[[rpimage(zoo_phase3.gif)]]
{{{
<input>
  <phase id="one">
    <about> <label>First Page</label> </about>
    <string id="first">
      <about> <label>First input</label> </about>
      <default>one</default>
    </string>
  </phase>

  <phase id="two">
    <about> <label>Second Page</label> </about>
    <string id="second">
      <about> <label>Second input</label> </about>
      <default>two</default>
    </string>
  </phase>
</input>
}}}

You can see working code in the [browser:trunk/examples/zoo zoo of examples] in the [browser:trunk/examples/zoo/phase phase example] or on the hub in the directory /apps/rappture/examples/zoo/phase.