protected void renderComponent()

in tapestry-framework/src/org/apache/tapestry/form/PropertySelection.java [77:162]
55 lines of code
12 McCabe index (conditional complexity)

    protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle)
    {
        IForm form = getForm(cycle);

        boolean rewinding = form.isRewinding();

        String name = form.getElementId(this);

        if (rewinding)
        {
            // If disabled, ignore anything that comes up from the client.

            if (isDisabled())
                return;

            String optionValue = cycle.getRequestContext().getParameter(name);

            Object value = (optionValue == null) ? null : getModel().translateValue(optionValue);

            setValue(value);

            return;
        }

        IPropertySelectionRenderer renderer = getRenderer();

        if (renderer != null)
        {
            renderWithRenderer(writer, cycle, renderer);
            return;
        }

        writer.begin("select");
        writer.attribute("name", name);

        if (isDisabled())
            writer.attribute("disabled", "disabled");

        if (getSubmitOnChange())
            writer.attribute("onchange", "javascript:this.form.submit();");

        // Apply informal attributes.

        renderInformalParameters(writer, cycle);

        writer.println();

        IPropertySelectionModel model = getModel();

        if (model == null)
            throw Tapestry.createRequiredParameterException(this, "model");

        int count = model.getOptionCount();
        boolean foundSelected = false;
        boolean selected = false;
        Object value = getValue();

        for (int i = 0; i < count; i++)
        {
            Object option = model.getOption(i);

            if (!foundSelected)
            {
                selected = isEqual(option, value);
                if (selected)
                    foundSelected = true;
            }

            writer.begin("option");
            writer.attribute("value", model.getValue(i));

            if (selected)
                writer.attribute("selected", "selected");

            writer.print(model.getLabel(i));

            writer.end();

            writer.println();

            selected = false;
        }

        writer.end(); // <select>

    }