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org.primefaces.component.charts.ChartRenderer Maven / Gradle / Ivy
/*
* The MIT License
*
* Copyright (c) 2009-2023 PrimeTek Informatics
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package org.primefaces.component.charts;
import java.io.IOException;
import java.util.List;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.primefaces.component.api.UIChart;
import org.primefaces.context.PrimeRequestContext;
import org.primefaces.model.charts.ChartData;
import org.primefaces.model.charts.ChartDataSet;
import org.primefaces.model.charts.ChartModel;
import org.primefaces.model.charts.ChartOptions;
import org.primefaces.model.charts.axes.cartesian.CartesianAxes;
import org.primefaces.model.charts.axes.cartesian.CartesianScales;
import org.primefaces.model.charts.axes.radial.RadialScales;
import org.primefaces.model.charts.optionconfig.animation.Animation;
import org.primefaces.model.charts.optionconfig.elements.Elements;
import org.primefaces.model.charts.optionconfig.legend.Legend;
import org.primefaces.model.charts.optionconfig.title.Title;
import org.primefaces.model.charts.optionconfig.tooltip.Tooltip;
import org.primefaces.renderkit.CoreRenderer;
import org.primefaces.util.ChartUtils;
import org.primefaces.util.EscapeUtils;
import org.primefaces.util.HTML;
import org.primefaces.util.LangUtils;
public class ChartRenderer extends CoreRenderer {
@Override
public void decode(FacesContext context, UIComponent component) {
super.decodeBehaviors(context, component);
}
protected void encodeMarkup(FacesContext context, UIChart chart) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String clientId = chart.getClientId(context);
String style = chart.getStyle();
String styleClass = chart.getStyleClass();
styleClass = (styleClass != null) ? "ui-chart " + styleClass : "ui-chart";
writer.startElement("div", null);
writer.writeAttribute("id", clientId, null);
writer.writeAttribute("class", styleClass, "styleClass");
writer.startElement("canvas", null);
writer.writeAttribute("id", clientId + "_canvas", null);
writer.writeAttribute(HTML.ARIA_ROLE, "img", null);
String ariaLabel = chart.getAriaLabel();
if (LangUtils.isBlank(ariaLabel)) {
ChartOptions options = (ChartOptions) chart.getModel().getOptions();
if (options != null) {
Title title = options.getTitle();
if (title != null) {
ariaLabel = String.valueOf(title.getText());
}
}
}
writer.writeAttribute(HTML.ARIA_LABEL, ariaLabel, null);
if (style != null) writer.writeAttribute("style", style, "style");
writer.endElement("canvas");
writer.endElement("div");
}
protected void encodeConfig(FacesContext context, ChartModel model) throws IOException {
ResponseWriter writer = context.getResponseWriter();
ChartData data = model.getData();
Object options = model.getOptions();
writer.write(",\"config\":{");
writer.write("\"type\":\"" + model.getType() + "\"");
encodeData(context, data);
encodeOptions(context, model.getType(), options);
writer.write("}");
String extender = model.getExtender();
if (extender != null) {
writer.write(",\"extender\":" + extender);
}
}
protected void encodeData(FacesContext context, ChartData data) throws IOException {
ResponseWriter writer = context.getResponseWriter();
if (data == null) {
return;
}
List dataSetList = data.getDataSet();
writer.write(",\"data\":{");
writer.write("\"datasets\":[");
for (int i = 0; i < dataSetList.size(); i++) {
ChartDataSet dataSet = dataSetList.get(i);
if (dataSet != null) {
if (i != 0) {
writer.write(",");
}
writer.write(dataSet.encode());
}
}
writer.write("]");
Object labels = data.getLabels();
if (labels != null) {
writer.write(",\"labels\":");
writeLabels(context, labels);
}
writer.write("}");
}
protected void writeLabels(FacesContext context, Object labels) throws IOException {
boolean isList = labels instanceof List;
if (isList) {
ResponseWriter writer = context.getResponseWriter();
List labelList = (List) labels;
writer.write("[");
for (int i = 0; i < labelList.size(); i++) {
if (i != 0) {
writer.write(",");
}
Object item = labelList.get(i);
if (item instanceof String) {
writer.write("\"" + EscapeUtils.forJavaScript((String) item) + "\"");
}
else {
writeLabels(context, item);
}
}
writer.write("]");
}
}
protected void encodeOptions(FacesContext context, String type, Object options) throws IOException {
// implemented by chart components
}
protected void encodeScales(FacesContext context, String chartName, Object scales, boolean hasComma) throws IOException {
ResponseWriter writer = context.getResponseWriter();
if (scales != null) {
if (hasComma) {
writer.write(",");
}
if (scales instanceof CartesianScales) {
writer.write("\"scales\":{");
CartesianScales cScales = (CartesianScales) scales;
StringBuilder scaleAttrs = new StringBuilder(128);
List xAxes = cScales.getXAxes();
if (xAxes != null && !xAxes.isEmpty()) {
encodeAxes(context, chartName, "x", xAxes);
}
List yAxes = cScales.getYAxes();
if (yAxes != null && !yAxes.isEmpty()) {
if (xAxes != null && !xAxes.isEmpty()) {
writer.write(",");
}
encodeAxes(context, chartName, "y", yAxes);
}
writer.write(scaleAttrs.toString());
writer.write("}");
}
else if (scales instanceof RadialScales) {
writer.write("\"scale\":{");
RadialScales rScales = (RadialScales) scales;
StringBuilder scaleAttrs = new StringBuilder(128);
if (rScales.getAngleLines() != null) {
writeJsonAttribute(scaleAttrs, "angleLines", rScales.getAngleLines().encode());
}
if (rScales.getGridLines() != null) {
writeJsonAttribute(scaleAttrs, "grid", rScales.getGridLines().encode());
}
if (rScales.getPointLabels() != null) {
writeJsonAttribute(scaleAttrs, "pointLabels", rScales.getPointLabels().encode());
}
if (rScales.getTicks() != null) {
writeJsonAttribute(scaleAttrs, "ticks", rScales.getTicks().encode());
}
if (rScales.getStartAngle() != null) {
writeJsonAttribute(scaleAttrs, "startAngle", rScales.getStartAngle().toString());
}
writer.write(scaleAttrs.toString());
writer.write("}");
}
}
}
private void writeJsonAttribute(StringBuilder stringBuilder, String attributeName, String attributeValue) {
if (stringBuilder.length() > 0) {
stringBuilder.append(",");
}
stringBuilder.append("\"" + attributeName + "\":" + attributeValue);
}
protected void encodeAxes(FacesContext context, String chartName, String defaultAxeId, List axes) throws IOException {
ResponseWriter writer = context.getResponseWriter();
for (int i = 0; i < axes.size(); i++) {
if (i > 0) {
writer.write(",");
}
CartesianAxes data = axes.get(i);
String axeId = data.getId() == null ? defaultAxeId : data.getId();
writer.write("\"" + axeId + "\": {");
writer.write(data.encode());
writer.write("}");
}
}
protected void encodeElements(FacesContext context, Elements elements, boolean hasComma) throws IOException {
ResponseWriter writer = context.getResponseWriter();
if (elements != null) {
if (hasComma) {
writer.write(",");
}
writer.write("\"elements\":{");
writer.write(elements.encode());
writer.write("}");
}
}
protected void encodeResponsive(FacesContext context, ChartOptions options, boolean hasComma) throws IOException {
ResponseWriter writer = context.getResponseWriter();
if (hasComma) {
writer.write(",");
}
ChartUtils.writeDataValue(writer, "responsive", options.isResponsive(), false);
ChartUtils.writeDataValue(writer, "maintainAspectRatio", options.isMaintainAspectRatio(), true);
ChartUtils.writeDataValue(writer, "aspectRatio", options.getAspectRatio(), true);
}
protected void encodePlugins(FacesContext context, ChartOptions options, boolean hasComma) throws IOException {
ResponseWriter writer = context.getResponseWriter();
if (hasComma) {
writer.write(",");
}
writer.write("\"plugins\":{");
Title title = options.getTitle();
Title subtitle = options.getSubtitle();
Tooltip tooltip = options.getTooltip();
Legend legend = options.getLegend();
encodeTitle(context, title, "title", false);
encodeTitle(context, subtitle, "subtitle", title != null);
encodeTooltip(context, tooltip, title != null || subtitle != null);
encodeLegend(context, legend, title != null || subtitle != null || tooltip != null);
writer.write("}");
}
protected void encodeTitle(FacesContext context, Title title, String element, boolean hasComma) throws IOException {
ResponseWriter writer = context.getResponseWriter();
if (title != null) {
if (hasComma) {
writer.write(",");
}
writer.write(String.format("\"%s\":{", element));
writer.write(title.encode());
writer.write("}");
}
}
protected void encodeTooltip(FacesContext context, Tooltip tooltip, boolean hasComma) throws IOException {
ResponseWriter writer = context.getResponseWriter();
if (tooltip != null) {
if (hasComma) {
writer.write(",");
}
if (PrimeRequestContext.getCurrentInstance(context).isRTL()) {
tooltip.setRtl(true);
tooltip.setTextDirection("rtl");
}
writer.write("\"tooltip\":{");
writer.write(tooltip.encode());
writer.write("}");
}
}
protected void encodeLegend(FacesContext context, Legend legend, boolean hasComma) throws IOException {
ResponseWriter writer = context.getResponseWriter();
if (legend != null) {
if (hasComma) {
writer.write(",");
}
if (PrimeRequestContext.getCurrentInstance(context).isRTL()) {
legend.setRtl(true);
legend.setTextDirection("rtl");
}
writer.write("\"legend\":{");
writer.write(legend.encode());
writer.write("}");
}
}
protected void encodeAnimation(FacesContext context, Animation animation, boolean hasComma) throws IOException {
ResponseWriter writer = context.getResponseWriter();
if (animation != null) {
if (hasComma) {
writer.write(",");
}
writer.write("\"animation\":{");
writer.write(animation.encode());
writer.write("}");
}
}
}
