protected void renderComponent()

in tapestry-framework/src/org/apache/tapestry/form/ListEdit.java [46:120]
50 lines of code
11 McCabe index (conditional complexity)

    protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle)
    {
        Iterator i = null;

        IForm form = getForm(cycle);

        boolean cycleRewinding = cycle.isRewinding();

        // If the cycle is rewinding, but not this particular form,
        // then do nothing (don't even render the body).

        if (cycleRewinding && !form.isRewinding())
            return;

        String name = form.getElementId(this);

        if (!cycleRewinding)
        {
            i = Tapestry.coerceToIterator(getSourceBinding().getObject());
        }
        else
        {
            RequestContext context = cycle.getRequestContext();
            String[] submittedValues = context.getParameters(name);

            i = Tapestry.coerceToIterator(submittedValues);
        }

        // If the source (when rendering), or the submitted values (on submit)
        // are null, then skip the remainder (nothing to update, nothing to
        // render).

        if (i == null)
            return;

        int index = 0;

        IBinding indexBinding = getIndexBinding();
        IBinding valueBinding = getValueBinding();
        IActionListener listener = getListener();
        String element = getElement();

        while (i.hasNext())
        {
            Object value = null;

            if (indexBinding != null)
                indexBinding.setInt(index++);

            if (cycleRewinding)
                value = convertValue((String) i.next());
            else
            {
                value = i.next();
                writeValue(form, name, value);
            }

            valueBinding.setObject(value);

            if (listener != null)
                listener.actionTriggered(this, cycle);

            if (element != null)
            {
                writer.begin(element);
                renderInformalParameters(writer, cycle);
            }

            renderBody(writer, cycle);

            if (element != null)
                writer.end();

        }
    }