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PrimeFaces is one of the most popular UI libraries in Java EE Ecosystem and widely used by software companies, world renowned brands, banks, financial institutions, insurance companies, universities and more.
/**
* The MIT License
*
* Copyright (c) 2009-2019 PrimeTek
*
* 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.diagram;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.primefaces.model.diagram.Connection;
import org.primefaces.model.diagram.DiagramModel;
import org.primefaces.model.diagram.Element;
import org.primefaces.model.diagram.connector.Connector;
import org.primefaces.model.diagram.endpoint.EndPoint;
import org.primefaces.model.diagram.overlay.Overlay;
import org.primefaces.renderkit.CoreRenderer;
import org.primefaces.util.SharedStringBuilder;
import org.primefaces.util.WidgetBuilder;
public class DiagramRenderer extends CoreRenderer {
private static final String SB_DIAGRAM = CoreRenderer.class.getName() + "#diagram";
@Override
public void decode(FacesContext context, UIComponent component) {
Diagram diagram = (Diagram) component;
if (diagram.isConnectRequest(context)) {
decodeNewConnection(context, diagram);
}
else if (diagram.isDisconnectRequest(context)) {
decodeDisconnection(context, diagram);
}
else if (diagram.isConnectionChangeRequest(context)) {
decodeConnectionChange(context, diagram);
}
decodeBehaviors(context, component);
}
private void decodeNewConnection(FacesContext context, Diagram diagram) {
//no need to decode since state is synced in previous connection move request
if (context.getExternalContext().getRequestParameterMap().containsKey(diagram.getClientId(context) + "_connectionChanged")) {
return;
}
DiagramModel model = (DiagramModel) diagram.getValue();
if (model != null) {
Connection connection = decodeConnection(context, diagram, true);
if (connection != null) {
model.connect(connection);
}
}
}
private void decodeDisconnection(FacesContext context, Diagram diagram) {
DiagramModel model = (DiagramModel) diagram.getValue();
if (model != null) {
Connection connection = decodeConnection(context, diagram, false);
if (connection != null) {
model.disconnect(connection);
}
}
}
private void decodeConnectionChange(FacesContext context, Diagram diagram) {
DiagramModel model = (DiagramModel) diagram.getValue();
if (model != null) {
Map params = context.getExternalContext().getRequestParameterMap();
String clientId = diagram.getClientId(context);
Element originalSourceElement = model.findElement(params.get(clientId + "_originalSourceId"));
Element newSourceElement = model.findElement(params.get(clientId + "_newSourceId"));
Element originalTargetElement = model.findElement(params.get(clientId + "_originalTargetId"));
Element newTargetElement = model.findElement(params.get(clientId + "_newTargetId"));
EndPoint originalSourceEndPoint = model.findEndPoint(originalSourceElement, params.get(clientId + "_originalSourceEndPointId"));
EndPoint newSourceEndPoint = model.findEndPoint(newSourceElement, params.get(clientId + "_newSourceEndPointId"));
EndPoint originalTargetEndPoint = model.findEndPoint(originalTargetElement, params.get(clientId + "_originalTargetEndPointId"));
EndPoint newTargetEndPoint = model.findEndPoint(newTargetElement, params.get(clientId + "_newTargetEndPointId"));
model.disconnect(findConnection(model, originalSourceEndPoint, originalTargetEndPoint));
model.connect(new Connection(newSourceEndPoint, newTargetEndPoint));
}
}
private Connection decodeConnection(FacesContext context, Diagram diagram, boolean createNew) {
DiagramModel model = (DiagramModel) diagram.getValue();
Connection connection = null;
if (model != null) {
Map params = context.getExternalContext().getRequestParameterMap();
String clientId = diagram.getClientId(context);
Element sourceElement = model.findElement(params.get(clientId + "_sourceId"));
Element targetElement = model.findElement(params.get(clientId + "_targetId"));
EndPoint sourceEndPoint = model.findEndPoint(sourceElement, params.get(clientId + "_sourceEndPointId"));
EndPoint targetEndPoint = model.findEndPoint(targetElement, params.get(clientId + "_targetEndPointId"));
if (createNew) {
connection = new Connection(sourceEndPoint, targetEndPoint);
}
else {
connection = findConnection(model, sourceEndPoint, targetEndPoint);
}
}
return connection;
}
private Connection findConnection(DiagramModel model, EndPoint source, EndPoint target) {
Connection connection = null;
if (model != null) {
List connections = model.getConnections();
if (connections != null) {
int connectionsSize = connections.size();
for (int i = 0; i < connectionsSize; i++) {
Connection conn = connections.get(i);
if (conn.getSource().equals(source) && conn.getTarget().equals(target)) {
connection = conn;
break;
}
}
}
}
return connection;
}
@Override
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
Diagram diagram = (Diagram) component;
encodeMarkup(context, diagram);
encodeScript(context, diagram);
}
protected void encodeScript(FacesContext context, Diagram diagram) throws IOException {
String clientId = diagram.getClientId(context);
WidgetBuilder wb = getWidgetBuilder(context);
wb.init("Diagram", diagram.resolveWidgetVar(), clientId);
DiagramModel model = (DiagramModel) diagram.getValue();
if (model != null) {
encodeDefaults(wb, model);
encodeEndPoints(wb, model, clientId);
encodeConnections(wb, model);
}
encodeClientBehaviors(context, diagram);
wb.finish();
}
protected void encodeDefaults(WidgetBuilder wb, DiagramModel model) throws IOException {
StringBuilder sb = SharedStringBuilder.get(SB_DIAGRAM);
Connector defaultConnector = model.getDefaultConnector();
if (defaultConnector != null) {
String paintStyle = defaultConnector.getPaintStyle();
String hoverPaintStyle = defaultConnector.getHoverPaintStyle();
wb.append(",defaultConnector:").append(defaultConnector.toJS(sb));
wb.append(",containment:").append("" + model.isContainment());
if (paintStyle != null) {
wb.append(",paintStyle:").append(paintStyle);
}
if (hoverPaintStyle != null) {
wb.append(",hoverPaintStyle:").append(hoverPaintStyle);
}
sb.setLength(0);
}
encodeOverlays(wb, model.getDefaultConnectionOverlays(), "connectionOverlays");
if (!model.isConnectionsDetachable()) {
wb.append(",connectionsDetachable:false");
}
int maxConnections = model.getMaxConnections();
if (maxConnections != 1) {
wb.append(",maxConnections:").append(maxConnections);
}
}
protected void encodeEndPoints(WidgetBuilder wb, DiagramModel model, String clientId) throws IOException {
List elements = model.getElements();
if (elements != null && !elements.isEmpty()) {
int elementsSize = elements.size();
wb.append(",endPoints:[");
for (int i = 0; i < elementsSize; i++) {
Element element = elements.get(i);
String elementClientId = clientId + "-" + element.getId();
List endPoints = element.getEndPoints();
if (endPoints != null && !endPoints.isEmpty()) {
int endPointsSize = endPoints.size();
for (int j = 0; j < endPointsSize; j++) {
EndPoint endPoint = endPoints.get(j);
encodeEndPoint(wb, endPoint, elementClientId);
if (j < (endPointsSize - 1)) {
wb.append(",");
}
}
}
if (i < (elementsSize - 1)) {
wb.append(",");
}
}
wb.append("]");
}
}
protected void encodeEndPoint(WidgetBuilder wb, EndPoint endPoint, String elementClientId) throws IOException {
String type = endPoint.getType();
StringBuilder sb = SharedStringBuilder.get(SB_DIAGRAM);
String styleClass = endPoint.getStyleClass();
String hoverStyleClass = endPoint.getHoverStyleClass();
String style = endPoint.getStyle();
String hoverStyle = endPoint.getHoverStyle();
int maxConnections = endPoint.getMaxConnections();
String scope = endPoint.getScope();
wb.append("{uuid:'").append(endPoint.getId()).append("'")
.append(",element:'").append(elementClientId).append("'")
.append(",anchor:'").append(endPoint.getAnchor().toString()).append("'");
if (maxConnections != 1) {
wb.append(",maxConnections:").append(maxConnections);
}
if (style != null) {
wb.append(",paintStyle:").append(style);
}
if (hoverStyle != null) {
wb.append(",hoverPaintStyle:").append(hoverStyle);
}
if (endPoint.isSource()) {
wb.append(",isSource:true");
}
if (endPoint.isTarget()) {
wb.append(",isTarget:true");
}
if (styleClass != null) {
wb.append(",cssClass:'").append(styleClass).append("'");
}
if (hoverStyleClass != null) {
wb.append(",hoverClass:'").append(hoverStyleClass).append("'");
}
if (scope != null) {
wb.append(",scope:'").append(scope).append("'");
}
if (type != null) {
wb.append(",endpoint:").append(endPoint.toJS(sb));
}
encodeOverlays(wb, endPoint.getOverlays(), "overlays");
wb.append("}");
}
protected void encodeConnections(WidgetBuilder wb, DiagramModel model) throws IOException {
List connections = model.getConnections();
if (connections != null && !connections.isEmpty()) {
int connectionsSize = connections.size();
wb.append(",connections:[");
for (int i = 0; i < connectionsSize; i++) {
Connection connection = connections.get(i);
StringBuilder sb = SharedStringBuilder.get(SB_DIAGRAM);
Connector connector = connection.getConnector();
List overlays = connection.getOverlays();
wb.append("{uuids:['").append(connection.getSource().getId()).append("'")
.append(",'").append(connection.getTarget().getId()).append("']");
if (connector != null && connector.getType() != null) {
wb.append(",connector:").append(connector.toJS(sb));
String paintStyle = connector.getPaintStyle();
String hoverPaintStyle = connector.getHoverPaintStyle();
if (paintStyle != null) {
wb.append(",paintStyle:").append(paintStyle);
}
if (hoverPaintStyle != null) {
wb.append(",hoverPaintStyle:").append(hoverPaintStyle);
}
}
if (!connection.isDetachable()) {
wb.append(",detachable:false");
}
encodeOverlays(wb, overlays, "overlays");
wb.append("}");
if (i < (connectionsSize - 1)) {
wb.append(",");
}
}
wb.append("]");
}
}
protected void encodeOverlays(WidgetBuilder wb, List overlays, String propertyName) throws IOException {
StringBuilder sb = SharedStringBuilder.get(SB_DIAGRAM);
if (overlays != null && !overlays.isEmpty()) {
int overlaysSize = overlays.size();
wb.append(",").append(propertyName).append(":[");
for (int j = 0; j < overlaysSize; j++) {
Overlay overlay = overlays.get(j);
sb.setLength(0);
wb.append(overlay.toJS(sb));
if (j < (overlaysSize - 1)) {
wb.append(",");
}
}
wb.append("]");
}
}
protected void encodeMarkup(FacesContext context, Diagram diagram) throws IOException {
ResponseWriter writer = context.getResponseWriter();
DiagramModel model = (DiagramModel) diagram.getValue();
String clientId = diagram.getClientId(context);
String style = diagram.getStyle();
String styleClass = diagram.getStyleClass();
styleClass = (styleClass == null) ? Diagram.CONTAINER_CLASS : Diagram.CONTAINER_CLASS + " " + styleClass;
UIComponent elementFacet = diagram.getFacet("element");
Map requestMap = context.getExternalContext().getRequestMap();
String var = diagram.getVar();
writer.startElement("div", diagram);
writer.writeAttribute("id", diagram.getClientId(context), null);
writer.writeAttribute("class", styleClass, null);
if (style != null) {
writer.writeAttribute("style", style, null);
}
if (model != null) {
List elements = model.getElements();
if (elements != null && !elements.isEmpty()) {
for (int i = 0; i < elements.size(); i++) {
Element element = elements.get(i);
String elementClass = element.getStyleClass();
elementClass = (elementClass == null) ? Diagram.ELEMENT_CLASS : Diagram.ELEMENT_CLASS + " " + elementClass;
if (element.isDraggable()) {
elementClass = elementClass + " " + Diagram.DRAGGABLE_ELEMENT_CLASS;
}
Object data = element.getData();
String x = element.getX();
String y = element.getY();
String coords = "left:" + x + ";top:" + y;
String title = element.getTitle();
writer.startElement("div", null);
writer.writeAttribute("id", clientId + "-" + element.getId(), null);
writer.writeAttribute("class", elementClass, null);
writer.writeAttribute("style", coords, null);
writer.writeAttribute("data-tooltip", title, null);
if (elementFacet != null && var != null) {
requestMap.put(var, data);
elementFacet.encodeAll(context);
}
else if (data != null) {
writer.writeText(data, null);
}
writer.endElement("div");
}
}
if (var != null) {
requestMap.remove(var);
}
}
writer.endElement("div");
}
}