eu.schulteweb.wicket.datatables.markup.html.repeater.data.table.DataTableResourcesBehavior.java Source code

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Here is the source code for eu.schulteweb.wicket.datatables.markup.html.repeater.data.table.DataTableResourcesBehavior.java

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/*******************************************************************************
 * Copyright 2014 Stefan Schulte
 *
 * 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 eu.schulteweb.wicket.datatables.markup.html.repeater.data.table;

import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.wicket.Application;
import org.apache.wicket.Component;
import org.apache.wicket.behavior.Behavior;
import org.apache.wicket.markup.head.CssHeaderItem;
import org.apache.wicket.markup.head.HeaderItem;
import org.apache.wicket.markup.head.IHeaderResponse;
import org.apache.wicket.markup.head.JavaScriptHeaderItem;
import org.apache.wicket.markup.head.OnLoadHeaderItem;
import org.apache.wicket.request.resource.CssResourceReference;
import org.apache.wicket.request.resource.JavaScriptResourceReference;
import org.apache.wicket.util.template.PackageTextTemplate;

import eu.schulteweb.wicket.datatables.markup.html.repeater.data.table.feature.basic.ColumnDefinition;

public class DataTableResourcesBehavior<T> extends Behavior {

    private DataTable<T> dataTable;

    private DataTableResourcesBehavior(DataTable<T> dataTable) {
        this.dataTable = dataTable;
        dataTable.add(this);
    }

    @Override
    public void renderHead(Component component, IHeaderResponse response) {
        super.renderHead(component, response);

        Configuration configuration = dataTable.getConfiguration();
        configuration.addParameter("ajax", dataTable.getCallbackUrl());
        configuration.add(new ColumnDefinition(dataTable.getColumns()));

        response.render(CssHeaderItem.forReference(
                new CssResourceReference(DataTableResourcesBehavior.class, "css/jquery.dataTables.css")));

        response.render(JavaScriptHeaderItem.forReference(
                new JavaScriptResourceReference(DataTableResourcesBehavior.class, "js/jquery.dataTables.js") {

                    @Override
                    public Iterable<? extends HeaderItem> getDependencies() {
                        List<HeaderItem> dependencies = new ArrayList<HeaderItem>();
                        dependencies.add(JavaScriptHeaderItem.forReference(
                                Application.get().getJavaScriptLibrarySettings().getJQueryReference()));
                        return dependencies;
                    }
                }));

        Map<String, Object> variables = new HashMap<String, Object>();
        variables.put("tableId", dataTable.getTableMarkupId());
        variables.put("config", configuration.toString());

        PackageTextTemplate initScript = null;
        try {
            initScript = new PackageTextTemplate(DataTableResourcesBehavior.class, "js/initScript.js");

            response.render(OnLoadHeaderItem.forScript(initScript.asString(variables)));
        } finally {
            if (initScript != null) {
                try {
                    initScript.close();
                } catch (IOException e) {
                }
            }
        }
    }

    public static <T> void attachTo(DataTable<T> dataTable) {
        new DataTableResourcesBehavior<T>(dataTable);
    }
}