LinkDecorator.java

/**
 *  Copyright 2012 Universitat Pompeu Fabra.
 *
 *  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.onexus.website.api.widgets.tableviewer.decorators.link;

import org.apache.commons.lang3.StringUtils;
import org.apache.wicket.AttributeModifier;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.panel.EmptyPanel;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.Model;
import org.apache.wicket.util.encoding.UrlEncoder;
import org.onexus.collection.api.Collection;
import org.onexus.collection.api.Field;
import org.onexus.collection.api.IEntity;
import org.onexus.resource.api.ParameterKey;
import org.onexus.website.api.widgets.selection.FilterConfig;
import org.onexus.website.api.widgets.selection.MultipleEntitySelection;
import org.onexus.website.api.widgets.tableviewer.decorators.utils.FieldDecorator;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

public class LinkDecorator extends FieldDecorator {

    private Map<ParameterKey, String> parameters;

    public LinkDecorator(Field field, Map<ParameterKey, String> parameters) {
        super(field);
        this.parameters = parameters;
    }

    @Override
    public void populateCell(WebMarkupContainer cellContainer, String componentId, IModel<IEntity> entityModel) {

        IEntity entity = entityModel.getObject();
        Object description = getValue(entity);

        if (description != null) {

            String currentColumnValue = String.valueOf(entity.get(getField().getId()));

            List<String> columnValues = new ArrayList<String>();
            if (parameters.containsKey(LinkDecoratorParameters.SEPARATOR)) {
                for (String value : currentColumnValue.split(parameters.get(LinkDecoratorParameters.SEPARATOR).trim())) {
                    columnValues.add(value.trim());
                }
            } else {
                columnValues.add(getFormatValue(entity));
            }

            StringBuilder content = new StringBuilder();
            Iterator<String> columnValueIt = columnValues.iterator();

            while (columnValueIt.hasNext()) {
                String columnValue = columnValueIt.next();

                String href = parameters.get(LinkDecoratorParameters.URL);

                href = replaceParameters(getField(), columnValue, entity, href, false);
                href = fixLinkUrl(href);

                content.append("<a href=\"").append(href).append("\"");
                if (parameters.containsKey(LinkDecoratorParameters.TARGET)) {
                    content.append(" target=\"").append(parameters.get(LinkDecoratorParameters.TARGET)).append("\"");
                }

                if (parameters.containsKey(LinkDecoratorParameters.LENGTH)) {
                    columnValue = StringUtils.abbreviate(columnValue, Integer.valueOf(parameters.get(LinkDecoratorParameters.LENGTH)));
                }

                if (parameters.containsKey(LinkDecoratorParameters.ICON)) {

                    String iconTitle = parameters.get(LinkDecoratorParameters.ICON_TITLE);
                    if (iconTitle == null) {
                        iconTitle = "Click to see more details about this value";
                    }
                    content.append(" rel=\"tooltip\" title=\"").append(iconTitle).append("\"><i class=\"");
                    content.append(parameters.get(LinkDecoratorParameters.ICON)).append("\"></i></a> ");
                    content.append(columnValue);
                } else {
                    content.append(">").append(columnValue).append("</a>");
                }

                if (columnValueIt.hasNext()) {
                    content.append(", ");
                }
            }

            cellContainer.add(new Label(componentId, content.toString()).setEscapeModelStrings(false));

        } else {
            cellContainer.add(new EmptyPanel(componentId));
        }

        cellContainer.add(new AttributeModifier("title", new Model<String>(description == null ? "No data" : description.toString())));
    }

    @Override
    public List<String> getExtraFields(Collection collection) {

        String href = parameters.get(LinkDecoratorParameters.URL);

        if (href != null) {
            return extractFields(href);
        }

        return Collections.EMPTY_LIST;
    }



}