org.metawidget.gwt.client.widgetprocessor.StyleNameProcessor.java Source code

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Here is the source code for org.metawidget.gwt.client.widgetprocessor.StyleNameProcessor.java

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// Metawidget
//
// This file is dual licensed under both the LGPL
// (http://www.gnu.org/licenses/lgpl-2.1.html) and the EPL
// (http://www.eclipse.org/org/documents/epl-v10.php). As a
// recipient of Metawidget, you may choose to receive it under either
// the LGPL or the EPL.
//
// Commercial licenses are also available. See http://metawidget.org
// for details.

package org.metawidget.gwt.client.widgetprocessor;

import java.util.Map;

import org.metawidget.gwt.client.ui.GwtMetawidget;
import org.metawidget.widgetprocessor.iface.WidgetProcessor;

import com.google.gwt.user.client.ui.Widget;

/**
 * WidgetProcessor that calls <code>addStyleName</code> on a Widget, based on
 * the <code>getStyleName</code> of the parent Metawidget.
 *
 * @author <a href="http://kennardconsulting.com">Richard Kennard</a>
 */

public class StyleNameProcessor implements WidgetProcessor<Widget, GwtMetawidget> {

    //
    // Public methods
    //

    public Widget processWidget(Widget widget, String elementName, Map<String, String> attributes,
            GwtMetawidget metawidget) {

        // Note: this only applies the styles to Stubs at the top-level. In practice, this seemed
        // to give more 'expected' behaviour than drilling into the Stubs and applying the styles
        // to all their subcomponents too

        String styleName = metawidget.getStyleName();

        if (styleName != null && styleName.length() != 0) {
            widget.addStyleName(styleName);
        }

        return widget;
    }
}