Table component and wrapped checkbox component

I'm reading the example of workbench application.  I'm primarly
interested in table component so i went to read the source code of
LocaleList component, and i found some hard to understand thing:

<tr jwcid="tableRows">
  <td><span jwcid="checkbox"/></td>
  <td jwcid="tableValues" align="center"/>
</tr>

The checkbox component is wrapped into the tableRows component,
TableRows component type, i like to know why that component knows what
locales are selected, so i go to read the xml descriptor to see the
associated expresion of the checkbox component:

<component id="checkbox" type="Checkbox">
  <binding name="selected" expression="checkboxSelected"/>
</component>

then go to the java source code:

public boolean getCheckboxSelected()
  {
    return m_setSelectedLocales.contains(getCurrentLocale());
  }

public void setCheckboxSelected(boolean bSelected)
  {
    if (bSelected)
      m_setSelectedLocales.add(getCurrentLocale());
    else
      m_setSelectedLocales.remove(getCurrentLocale());
  }

and all its pretty logical, but i dont understand:

When a component is in a foreach component and this foreach component is
in a form component, numeric identifier are automatically appended to
the name of the component?

The framework automatically calls in the render process the method
setCheckboxSelected, for each of the checkboxes generated?


-- 
Juan Alvarez		                         Fluid Signal S.A.
mailto:[email protected]        http://www.fluidsignal.com/
Key fingerprint: 15C4 0986 A174 862A B607 8EEA 934F 8649 07E2 EA40


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