/*
* Copyright 2011 Inaiat H. Moraes.
*
* 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.
* under the License.
*/
package br.com.digilabs.jqplot;
import br.com.digilabs.jqplot.metadata.JqPlotPlugin;
import br.com.digilabs.jqplot.support.JqPlotJsonMapHierarchicalWriter;
import java.io.Writer;
import java.util.ArrayList;
import java.util.List;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.converters.MarshallingContext;
import com.thoughtworks.xstream.converters.enums.EnumConverter;
import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
import com.thoughtworks.xstream.io.json.JsonHierarchicalStreamDriver;
import com.thoughtworks.xstream.io.json.JsonWriter;
/**
* Utility class to provide json from {@link Chart} object.
*
* @author inaiat
*/
public class JqPlotUtils {
/**
* Retorna os recursos de javascript
* @param chart
* @return lista de com os javascripts dos gráficos
*/
public static List<String> retriveJavaScriptResources(Chart<?> chart) {
List<String> resources = new ArrayList<String>();
Class<?> clazz = chart.getClass();
if (clazz.isAnnotationPresent(JqPlotPlugin.class)) {
JqPlotResources[] jqPlotResourceses = clazz.getAnnotation(
JqPlotPlugin.class).values();
for (JqPlotResources jqPlotResources : jqPlotResourceses) {
resources.add(jqPlotResources.getResource());
}
}
return resources;
}
/**
* Cria um comando jquery
* @param chart
* @param divId
* @return jquery criado
*/
public static String createJquery(Chart<?> chart, String divId) {
return createJquery(chart, divId, null);
}
/**
* Cria um comando jquery
* @param chart
* @param divId
* @param javaScriptVar
* @return jquery criado
*/
public static String createJquery(Chart<?> chart, String divId, String javaScriptVar) {
StringBuilder builder = new StringBuilder();
builder.append("$(document).ready(function(){\r\n");
if (javaScriptVar != null) {
builder.append(" var ").append(javaScriptVar).append("=");
}
builder.append(" $.jqplot('").append(divId).append("', ");
builder.append(chart.getChartData().toJsonString());
builder.append(", ");
builder.append(jqPlotToJson(chart.getChartConfiguration()));
builder.append(");\r\n");
builder.append("});\r\n");
return builder.toString();
}
/**
* Retorna o um json a partir de uma configuração jqplot
* @param jqPlot
* @return
*/
public static String jqPlotToJson(ChartConfiguration jqPlot) {
XStream xstream = new XStream(new JsonHierarchicalStreamDriver() {
@Override
public HierarchicalStreamWriter createWriter(Writer writer) {
return new JqPlotJsonMapHierarchicalWriter(writer, JsonWriter.DROP_ROOT_MODE) {
@Override
public void addAttribute(String name, String value) {
if (!name.contains("class")) {
super.addAttribute(name, value);
}
}
};
}
}) {
};
EnumConverter converter = new EnumConverter() {
@Override
public void marshal(Object source, HierarchicalStreamWriter writer,
MarshallingContext context) {
JqPlotResources plugin = (JqPlotResources) source;
writer.setValue(plugin.getClassName());
}
};
converter.canConvert(JqPlotResources.class);
xstream.registerConverter(converter);
return xstream.toXML(jqPlot);
}
}