/*
* Copyright 2009 Prime Technology.
*
* 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.primefaces.component.dashboard;
import java.io.IOException;
import java.util.Map;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.primefaces.component.panel.Panel;
import org.primefaces.event.DashboardReorderEvent;
import org.primefaces.model.DashboardColumn;
import org.primefaces.model.DashboardModel;
import org.primefaces.renderkit.CoreRenderer;
import org.primefaces.util.ComponentUtils;
public class DashboardRenderer extends CoreRenderer {
@Override
public void decode(FacesContext facesContext, UIComponent component) {
Map<String, String> params = facesContext.getExternalContext().getRequestParameterMap();
Dashboard dashboard = (Dashboard) component;
String clientId = dashboard.getClientId(facesContext);
String senderIndexParam = clientId + "_senderColumnIndex";
Integer senderColumnIndex = null;
if(params.containsKey(clientId + "_reordered")) {
String widgetClientId = params.get(clientId + "_widgetId");
Integer itemIndex = Integer.valueOf(params.get(clientId + "_itemIndex"));
Integer receiverColumnIndex = Integer.valueOf(params.get(clientId + "_receiverColumnIndex"));
if(params.containsKey(senderIndexParam)) {
senderColumnIndex = Integer.valueOf(params.get(senderIndexParam));
}
String[] idTokens = widgetClientId.split(":");
String widgetId = idTokens.length == 1 ? idTokens[0] : idTokens[idTokens.length - 1];
DashboardReorderEvent event = new DashboardReorderEvent(component, widgetId, itemIndex, receiverColumnIndex, senderColumnIndex);
dashboard.queueEvent(event);
updateDashboardModel(dashboard.getModel(), widgetId, itemIndex, receiverColumnIndex, senderColumnIndex);
}
}
protected void updateDashboardModel(DashboardModel model, String widgetId, Integer itemIndex, Integer receiverColumnIndex, Integer senderColumnIndex) {
if(senderColumnIndex == null) {
//Reorder widget in same column
DashboardColumn column = model.getColumn(receiverColumnIndex);
column.reorderWidget(itemIndex, widgetId);
} else {
//Transfer widget
DashboardColumn oldColumn = model.getColumn(senderColumnIndex);
DashboardColumn newColumn = model.getColumn(receiverColumnIndex);
model.transferWidget(oldColumn, newColumn, widgetId, itemIndex);
}
}
@Override
public void encodeEnd(FacesContext facesContext, UIComponent component) throws IOException {
Dashboard dashboard = (Dashboard) component;
encodeMarkup(facesContext, dashboard);
encodeScript(facesContext, dashboard);
}
protected void encodeMarkup(FacesContext facesContext, Dashboard dashboard) throws IOException {
ResponseWriter writer = facesContext.getResponseWriter();
String clientId = dashboard.getClientId(facesContext);
writer.startElement("div", dashboard);
writer.writeAttribute("id", clientId, "id");
String styleClass = dashboard.getStyleClass() != null ? Dashboard.CONTAINER_CLASS + " " + dashboard.getStyleClass() : Dashboard.CONTAINER_CLASS;
writer.writeAttribute("class", styleClass, "styleClass");
if(dashboard.getStyle() != null) writer.writeAttribute("style", dashboard.getStyle(), "style");
DashboardModel model = dashboard.getModel();
if(model != null) {
for(DashboardColumn column : model.getColumns()) {
writer.startElement("div", null);
writer.writeAttribute("class", Dashboard.COLUMN_CLASS, null);
for(String widgetId : column.getWidgets()) {
Panel widget = findWidget(widgetId, dashboard);
if(widget != null)
renderChild(facesContext, widget);
}
writer.endElement("div");
}
}
writer.endElement("div");
}
protected void encodeScript(FacesContext facesContext, Dashboard dashboard) throws IOException {
ResponseWriter writer = facesContext.getResponseWriter();
String clientId = dashboard.getClientId(facesContext);
String widgetVar = createUniqueWidgetVar(facesContext, dashboard);
writer.startElement("script", null);
writer.writeAttribute("type", "text/javascript", null);
writer.write(widgetVar + " = new PrimeFaces.widget.Dashboard('" + clientId + "', {");
writer.write("url:'" + getActionURL(facesContext) + "'");
if(dashboard.isDisabled()) writer.write(",disabled:true");
if(dashboard.getOnReorderUpdate() != null) writer.write(",onReorderUpdate:'" + ComponentUtils.findClientIds(facesContext, dashboard, dashboard.getOnReorderUpdate()) + "'");
writer.write("});");
writer.endElement("script");
}
protected Panel findWidget(String id, Dashboard dashboard) {
for(UIComponent child : dashboard.getChildren()) {
Panel panel = (Panel) child;
if(panel.getId().equals(id))
return panel;
}
return null;
}
public void encodeChildren(FacesContext facesContext, UIComponent component) throws IOException {
//Rendering happens on encodeEnd
}
public boolean getRendersChildren() {
return true;
}
}