/**
* License Agreement.
*
* JBoss RichFaces - Ajax4jsf Component Library
*
* Copyright (C) 2007 Exadel, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.richfaces.taglib;
import javax.el.ValueExpression;
import org.richfaces.component.UIDatascroller;
import com.sun.facelets.FaceletContext;
import com.sun.facelets.tag.MetaRule;
import com.sun.facelets.tag.MetaRuleset;
import com.sun.facelets.tag.Metadata;
import com.sun.facelets.tag.MetadataTarget;
import com.sun.facelets.tag.TagAttribute;
import com.sun.facelets.tag.jsf.ComponentConfig;
import com.sun.facelets.tag.jsf.ComponentHandler;
/**
* Created 11.03.2008
* @author Nick Belaevski
* @since 3.2
*/
public class DatascrollerTagHandlerBase extends ComponentHandler {
private static final MetaRule pageRule = new MetaRule() {
public Metadata applyRule(String name, TagAttribute attribute, MetadataTarget meta) {
if ("page".equals(name)) {
return new PageMapper(attribute);
} else {
return null;
}
}
};
private static final class PageMapper extends Metadata {
private final TagAttribute page;
/**
* @param attribute
*/
public PageMapper(TagAttribute attribute) {
page = attribute;
}
/* (non-Javadoc)
* @see com.sun.facelets.tag.Metadata#applyMetadata(com.sun.facelets.FaceletContext, java.lang.Object)
*/
public void applyMetadata(FaceletContext ctx, Object instance) {
UIDatascroller datascroller = (UIDatascroller) instance;
ValueExpression ve = page.getValueExpression(ctx, int.class);
if (ve.isLiteralText()) {
Integer value = (Integer) ve.getValue(ctx.getFacesContext().getELContext());
datascroller.setPage(value);
} else {
datascroller.setValueExpression("page", ve);
}
}
}
public DatascrollerTagHandlerBase(ComponentConfig config) {
super(config);
}
protected MetaRuleset createMetaRuleset(Class type) {
MetaRuleset ruleset = super.createMetaRuleset(type);
ruleset.addRule(pageRule);
return ruleset;
}
}