/*
* Copyright 2009-2014 PrimeTek.
*
* 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.datalist;
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.renderkit.DataRenderer;
import org.primefaces.util.WidgetBuilder;
public class DataListRenderer extends DataRenderer {
@Override
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
DataList list = (DataList) component;
if(list.isPaginationRequest(context)) {
list.updatePaginationData(context, list);
if(list.isLazy()) {
list.loadLazyData();
}
if(list.getType().equals("none"))
encodeFreeList(context, list);
else
encodeStrictList(context, list);
}
else {
encodeMarkup(context, list);
encodeScript(context, list);
}
}
protected void encodeMarkup(FacesContext context, DataList list) throws IOException {
if(list.isLazy()) {
list.loadLazyData();
}
ResponseWriter writer = context.getResponseWriter();
String clientId = list.getClientId();
boolean hasPaginator = list.isPaginator();
boolean empty = (list.getRowCount() == 0);
String paginatorPosition = list.getPaginatorPosition();
String styleClass = list.getStyleClass() == null ? DataList.DATALIST_CLASS : DataList.DATALIST_CLASS + " " + list.getStyleClass();
if(hasPaginator) {
list.calculateFirst();
}
writer.startElement("div", list);
writer.writeAttribute("id", clientId, "id");
writer.writeAttribute("class", styleClass, "styleClass");
encodeFacet(context, list, "header", DataList.HEADER_CLASS);
if(hasPaginator && !paginatorPosition.equalsIgnoreCase("bottom")) {
encodePaginatorMarkup(context, list, "top");
}
writer.startElement("div", list);
writer.writeAttribute("id", clientId + "_content", "id");
writer.writeAttribute("class", DataList.CONTENT_CLASS, "styleClass");
if(empty) {
writer.startElement("div", list);
writer.writeAttribute("class", DataList.DATALIST_EMPTYMESSAGE_CLASS,null);
writer.write(list.getEmptyMessage());
writer.endElement("div");
}
else {
if(list.getType().equals("none"))
encodeFreeList(context, list);
else
encodeStrictList(context, list);
}
writer.endElement("div");
if(hasPaginator && !paginatorPosition.equalsIgnoreCase("top")) {
encodePaginatorMarkup(context, list, "bottom");
}
encodeFacet(context, list, "footer", DataList.FOOTER_CLASS);
writer.endElement("div");
}
protected void encodeScript(FacesContext context, DataList list) throws IOException {
String clientId = list.getClientId();
WidgetBuilder wb = getWidgetBuilder(context);
wb.initWithDomReady("DataList", list.resolveWidgetVar(), clientId);
if(list.isPaginator()) {
encodePaginatorConfig(context, list, wb);
}
wb.finish();
}
/**
* Renders items with no strict markup
*
* @param context FacesContext instance
* @param list DataList component
* @throws IOException
*/
protected void encodeStrictList(FacesContext context, DataList list) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String clientId = list.getClientId();
boolean isDefinition = list.isDefinition();
UIComponent definitionFacet = list.getFacet("description");
boolean renderDefinition = isDefinition && definitionFacet != null;
String itemType = list.getItemType();
String listClass = DataList.LIST_CLASS;
if(itemType != null && itemType.equals("none")) {
listClass = listClass + " " + DataList.NO_BULLETS_CLASS;
}
String listTag = list.getListTag();
String listItemTag = isDefinition ? "dt" : "li";
String varStatus = list.getVarStatus();
int first = list.getFirst();
int rows = list.getRows() == 0 ? list.getRowCount() : list.getRows();
int pageSize = first + rows;
int rowCount = list.getRowCount();
String rowIndexVar = list.getRowIndexVar();
Map<String,Object> requestMap = context.getExternalContext().getRequestMap();
writer.startElement(listTag, null);
writer.writeAttribute("id", clientId + "_list", null);
writer.writeAttribute("class", listClass, null);
if(list.getItemType() != null) {
writer.writeAttribute("type", list.getItemType(), null);
}
for(int i = first; i < pageSize; i++) {
if(varStatus != null) {
requestMap.put(varStatus, new VarStatus(first, (pageSize - 1), (i == 0), (i == (rowCount - 1)), i, (i % 2 == 0), (i % 2 == 1), 1));
}
list.setRowIndex(i);
if(rowIndexVar != null) {
requestMap.put(rowIndexVar, i);
}
if(list.isRowAvailable()) {
String itemStyleClass = list.getItemStyleClass();
itemStyleClass = (itemStyleClass == null) ? DataList.LIST_ITEM_CLASS: DataList.LIST_ITEM_CLASS + " " + itemStyleClass;
writer.startElement(listItemTag, null);
writer.writeAttribute("class", itemStyleClass, null);
renderChildren(context, list);
writer.endElement(listItemTag);
if(renderDefinition) {
writer.startElement("dd", null);
definitionFacet.encodeAll(context);
writer.endElement("dd");
}
}
}
//cleanup
list.setRowIndex(-1);
if(rowIndexVar != null) {
requestMap.remove(rowIndexVar);
}
if(varStatus != null) {
requestMap.remove(varStatus);
}
writer.endElement(listTag);
}
/**
* Renders items with no strict markup
*
* @param context FacesContext instance
* @param list DataList component
* @throws IOException
*/
protected void encodeFreeList(FacesContext context, DataList list) throws IOException {
int first = list.getFirst();
int rows = list.getRows() == 0 ? list.getRowCount() : list.getRows();
int pageSize = first + rows;
int rowCount = list.getRowCount();
String rowIndexVar = list.getRowIndexVar();
String varStatus = list.getVarStatus();
Map<String,Object> requestMap = context.getExternalContext().getRequestMap();
for(int i = first; i < pageSize; i++) {
if(varStatus != null) {
requestMap.put(varStatus, new VarStatus(first, (pageSize - 1), (i == 0), (i == (rowCount - 1)), i, (i % 2 == 0), (i % 2 == 1), 1));
}
list.setRowIndex(i);
if(rowIndexVar != null) {
requestMap.put(rowIndexVar, i);
}
if(list.isRowAvailable()) {
renderChildren(context, list);
}
}
//cleanup
list.setRowIndex(-1);
if(rowIndexVar != null) {
requestMap.remove(rowIndexVar);
}
if(varStatus != null) {
requestMap.remove(varStatus);
}
}
@Override
public void encodeChildren(FacesContext context, UIComponent component) throws IOException {
//Do Nothing
}
@Override
public boolean getRendersChildren() {
return true;
}
public static class VarStatus {
private int begin;
private int end;
private boolean first;
private boolean last;
private int index;
private boolean even;
private boolean odd;
private int step;
public VarStatus() {
}
public VarStatus(int begin, int end, boolean first, boolean last, int index, boolean even, boolean odd, int step) {
this.begin = begin;
this.end = end;
this.first = first;
this.last = last;
this.index = index;
this.even = even;
this.odd = odd;
this.step = step;
}
public int getBegin() {
return begin;
}
public void setBegin(int begin) {
this.begin = begin;
}
public int getEnd() {
return end;
}
public void setEnd(int end) {
this.end = end;
}
public boolean isEven() {
return even;
}
public void setEven(boolean even) {
this.even = even;
}
public boolean isFirst() {
return first;
}
public void setFirst(boolean first) {
this.first = first;
}
public int getIndex() {
return index;
}
public void setIndex(int index) {
this.index = index;
}
public boolean isLast() {
return last;
}
public void setLast(boolean last) {
this.last = last;
}
public boolean isOdd() {
return odd;
}
public void setOdd(boolean odd) {
this.odd = odd;
}
public int getStep() {
return step;
}
public void setStep(int step) {
this.step = step;
}
}
}