Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $
You can buy this project and download/modify it how often you want.
org.primefaces.component.datagrid.DataGridRenderer Maven / Gradle / Ivy
/*
* 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.datagrid;
import java.io.IOException;
import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.primefaces.renderkit.DataRenderer;
import org.primefaces.util.GridLayoutUtils;
import org.primefaces.util.WidgetBuilder;
public class DataGridRenderer extends DataRenderer {
@Override
public void decode(FacesContext context, UIComponent component) {
decodeBehaviors(context, component);
}
@Override
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
DataGrid grid = (DataGrid) component;
if(grid.isPaginationRequest(context)) {
grid.updatePaginationData(context, grid);
if(grid.isLazy()) {
grid.loadLazyData();
}
encodeContent(context, grid);
}
else {
encodeMarkup(context, grid);
encodeScript(context, grid);
}
}
protected void encodeScript(FacesContext context, DataGrid grid) throws IOException {
String clientId = grid.getClientId(context);
WidgetBuilder wb = getWidgetBuilder(context);
wb.init("DataGrid", grid.resolveWidgetVar(), clientId);
if(grid.isPaginator()) {
encodePaginatorConfig(context, grid, wb);
}
encodeClientBehaviors(context, grid);
wb.finish();
}
protected void encodeMarkup(FacesContext context, DataGrid grid) throws IOException {
if(grid.isLazy()) {
grid.loadLazyData();
}
ResponseWriter writer = context.getResponseWriter();
String clientId = grid.getClientId(context);
boolean hasPaginator = grid.isPaginator();
boolean empty = grid.getRowCount() == 0;
String layout = grid.getLayout();
String paginatorPosition = grid.getPaginatorPosition();
String style = grid.getStyle();
String styleClass = grid.getStyleClass() == null ? DataGrid.DATAGRID_CLASS : DataGrid.DATAGRID_CLASS + " " + grid.getStyleClass();
String contentClass = empty ? DataGrid.EMPTY_CONTENT_CLASS : (layout.equals("tabular") ? DataGrid.TABLE_CONTENT_CLASS: DataGrid.GRID_CONTENT_CLASS);
if(hasPaginator) {
grid.calculateFirst();
}
writer.startElement("div", grid);
writer.writeAttribute("id", clientId, "id");
writer.writeAttribute("class", styleClass, "styleClass");
if(style != null) {
writer.writeAttribute("style", style, "style");
}
encodeFacet(context, grid, "header", DataGrid.HEADER_CLASS);
if(hasPaginator && !paginatorPosition.equalsIgnoreCase("bottom")) {
encodePaginatorMarkup(context, grid, "top");
}
writer.startElement("div", grid);
writer.writeAttribute("id", clientId + "_content", null);
writer.writeAttribute("class", contentClass, null);
if(empty) {
UIComponent emptyFacet = grid.getFacet("emptyMessage");
if(emptyFacet != null)
emptyFacet.encodeAll(context);
else
writer.write(grid.getEmptyMessage());
}
else {
encodeContent(context, grid);
}
writer.endElement("div");
if(hasPaginator && !paginatorPosition.equalsIgnoreCase("top")) {
encodePaginatorMarkup(context, grid, "bottom");
}
encodeFacet(context, grid, "footer", DataGrid.FOOTER_CLASS);
writer.endElement("div");
}
protected void encodeContent(FacesContext context, DataGrid grid) throws IOException {
String layout = grid.getLayout();
if(layout.equals("tabular"))
encodeTable(context, grid);
else if(layout.equals("grid"))
encodeGrid(context, grid);
else
throw new FacesException(layout + " is not a valid value for DataGrid layout. Possible values are 'tabular' and 'grid'.");
}
protected void encodeGrid(FacesContext context, DataGrid grid) throws IOException {
ResponseWriter writer = context.getResponseWriter();
int columns = grid.getColumns();
int rowIndex = grid.getFirst();
int rows = grid.getRows();
int itemsToRender = rows != 0 ? rows : grid.getRowCount();
int numberOfRowsToRender = (itemsToRender + columns - 1) / columns;
String columnClass = DataGrid.COLUMN_CLASS + " " + GridLayoutUtils.getColumnClass(columns);
for(int i = 0; i < numberOfRowsToRender; i++) {
grid.setRowIndex(rowIndex);
if(!grid.isRowAvailable()) {
break;
}
writer.startElement("div", null);
writer.writeAttribute("class", DataGrid.GRID_ROW_CLASS, null);
for(int j = 0; j < columns; j++) {
writer.startElement("div", null);
writer.writeAttribute("class", columnClass, null);
grid.setRowIndex(rowIndex);
if(grid.isRowAvailable()) {
renderChildren(context, grid);
}
rowIndex++;
writer.endElement("div");
}
writer.endElement("div");
}
grid.setRowIndex(-1); //cleanup
}
protected void encodeTable(FacesContext context, DataGrid grid) throws IOException {
ResponseWriter writer = context.getResponseWriter();
int columns = grid.getColumns();
int rowIndex = grid.getFirst();
int rows = grid.getRows();
int itemsToRender = rows != 0 ? rows : grid.getRowCount();
int numberOfRowsToRender = (itemsToRender + columns - 1) / columns;
writer.startElement("table", grid);
writer.writeAttribute("class", DataGrid.TABLE_CLASS, null);
writer.startElement("tbody", null);
for(int i = 0; i < numberOfRowsToRender; i++) {
grid.setRowIndex(rowIndex);
if(!grid.isRowAvailable()) {
break;
}
writer.startElement("tr", null);
writer.writeAttribute("class", DataGrid.TABLE_ROW_CLASS, null);
for(int j = 0; j < columns; j++) {
writer.startElement("td", null);
writer.writeAttribute("class", DataGrid.COLUMN_CLASS, null);
grid.setRowIndex(rowIndex);
if(grid.isRowAvailable()) {
renderChildren(context, grid);
}
rowIndex++;
writer.endElement("td");
}
writer.endElement("tr");
}
grid.setRowIndex(-1); //cleanup
writer.endElement("tbody");
writer.endElement("table");
}
@Override
public void encodeChildren(FacesContext context, UIComponent component) throws IOException {
//Rendering happens on encodeEnd
}
@Override
public boolean getRendersChildren() {
return true;
}
}
