TagCloudRenderer.java

/*
 * Copyright 2009-2014 PrimeTek.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.primefaces.component.tagcloud;

import java.io.IOException;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.primefaces.model.tagcloud.TagCloudItem;
import org.primefaces.model.tagcloud.TagCloudModel;
import org.primefaces.renderkit.CoreRenderer;
import org.primefaces.util.WidgetBuilder;

public class TagCloudRenderer extends CoreRenderer {

    @Override
    public void decode(FacesContext context, UIComponent component) {
        decodeBehaviors(context, component);
    }

    @Override
    public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
        TagCloud tagCloud = (TagCloud) component;

        encodeMarkup(context, tagCloud);
		encodeScript(context, tagCloud);
    }

    protected void encodeMarkup(FacesContext context, TagCloud tagCloud) throws IOException {
        ResponseWriter writer = context.getResponseWriter();
        TagCloudModel model = tagCloud.getModel();
        String styleClass = tagCloud.getStyleClass();
        String style = tagCloud.getStyle();
        styleClass = styleClass == null ? TagCloud.STYLE_CLASS : TagCloud.STYLE_CLASS + " " + styleClass;

        writer.startElement("div", tagCloud);
        writer.writeAttribute("id", tagCloud.getClientId(context), "id");
        writer.writeAttribute("class", styleClass, "styleClass");
        if(style != null) {
            writer.writeAttribute("style", style, "style");
        }


        writer.startElement("ul", null);

        for(TagCloudItem item : model.getTags()) {
            String url = item.getUrl();
            String href = url == null ? "#" :  getResourceURL(context, item.getUrl());
            
            writer.startElement("li", null);
            writer.writeAttribute("class", "ui-tagcloud-strength-" + item.getStrength(), null);

            writer.startElement("a", null);
            writer.writeAttribute("href", href, null);
            writer.writeText(item.getLabel(), null);
            writer.endElement("a");

            writer.endElement("li");
        }

        writer.endElement("ul");

        writer.endElement("div");
    }

    protected void encodeScript(FacesContext context, TagCloud tagCloud) throws IOException {
        String clientId = tagCloud.getClientId(context);
        WidgetBuilder wb = getWidgetBuilder(context);
        wb.init("TagCloud", tagCloud.resolveWidgetVar(), clientId);
        
        encodeClientBehaviors(context, tagCloud);

        wb.finish();
    }
}