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The advanced component library for ICEfaces.
package org.icefaces.ace.component.datatable;
import org.icefaces.ace.component.celleditor.CellEditor;
import org.icefaces.ace.component.column.Column;
import org.icefaces.ace.component.panelexpansion.PanelExpansion;
import org.icefaces.ace.component.row.Row;
import org.icefaces.ace.component.rowexpansion.RowExpansion;
import org.icefaces.ace.model.table.RowState;
import org.icefaces.ace.model.table.TreeDataModel;
import org.icefaces.ace.util.HTML;
import javax.el.ValueExpression;
import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
/**
* Copyright 2010-2011 ICEsoft Technologies Canada Corp.
*
* 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.
*
* User: Nils
* Date: 12-06-01
* Time: 2:41 PM
*/
public class DataTableRowRenderer {
protected static boolean encodeRow(FacesContext context, DataTable table, List columns, Map> rowToSelectedFieldsMap, String clientId, int rowIndex, String parentIndex, String rowIndexVar, boolean topVisibleRowRendered) throws IOException {
table.setRowIndex(rowIndex);
if (!table.isRowAvailable()) return false;
if (rowIndexVar != null) context.getExternalContext().getRequestMap().put(rowIndexVar, rowIndex);
RowState rowState = table.getStateMap().get(table.getRowData());
boolean selected = rowState.isSelected();
boolean unselectable = !rowState.isSelectable();
boolean expanded = rowState.isExpanded();
boolean visible = rowState.isVisible();
List selectedCellExpressions = (rowToSelectedFieldsMap != null)
? (List)(rowToSelectedFieldsMap.get(table.getRowData()))
: null;
context.getExternalContext().getRequestMap().put(table.getRowStateVar(), rowState);
if (visible) {
ResponseWriter writer = context.getResponseWriter();
// Add leading conditional row for this row object if required
List leadingRows = table.getConditionalRows(rowIndex, true);
for (Row r : leadingRows) encodeConditionalRow(context, r);
String userRowStyleClass = table.getRowStyleClass();
String expandedClass = expanded ? DataTableConstants.EXPANDED_ROW_CLASS : "";
String unselectableClass = unselectable ? DataTableConstants.UNSELECTABLE_ROW_CLASS : "";
String rowStyleClass = rowIndex % 2 == 0 ? DataTableConstants.ROW_CLASS + " " + DataTableConstants.EVEN_ROW_CLASS : DataTableConstants.ROW_CLASS + " " + DataTableConstants.ODD_ROW_CLASS;
if (selected && table.getSelectionMode() != null) rowStyleClass = rowStyleClass + " ui-selected ui-state-active";
if (userRowStyleClass != null) rowStyleClass = rowStyleClass + " " + userRowStyleClass;
writer.startElement(HTML.TR_ELEM, null);
parentIndex = (parentIndex != null) ? parentIndex + "." : "";
writer.writeAttribute(HTML.ID_ATTR, clientId + "_row_" + parentIndex + rowIndex, null);
writer.writeAttribute(HTML.CLASS_ATTR, rowStyleClass + " " + expandedClass + " " + unselectableClass, null);
writer.writeAttribute(HTML.TABINDEX_ATTR, "0", null);
boolean innerTdDivRequired = ((table.isScrollable() || table.isResizableColumns()) & !topVisibleRowRendered);
for (Column kid : columns) {
if (kid.isRendered()) {
boolean cellSelected = false;
if (selectedCellExpressions != null) {
ValueExpression ve = kid.getValueExpression("selectBy") != null ? kid.getValueExpression("selectBy") : kid.getValueExpression("value");
if (ve != null)
cellSelected = selectedCellExpressions.contains(ve.getExpressionString());
}
encodeRegularCell(context, columns, kid, cellSelected, innerTdDivRequired);
}
}
if (rowIndexVar != null) context.getExternalContext().getRequestMap().put(rowIndexVar, rowIndex);
writer.endElement(HTML.TR_ELEM);
if (expanded) {
context.getExternalContext().getRequestMap().put(clientId + "_expandedRowId", ""+rowIndex);
boolean isPanel = table.getPanelExpansion() != null;
boolean isRow = table.getRowExpansion() != null;
// Ensure that table.getTableId returns correctly for request map look
table.setRowIndex(-1);
if (isPanel && isRow) {
if (rowState.getExpansionType() == RowState.ExpansionType.ROW) {
encodeRowExpansion(context, table, columns, writer);
}
else if (rowState.getExpansionType() == RowState.ExpansionType.PANEL) {
encodeRowPanelExpansion(context, table);
}
} else if (isPanel) {
encodeRowPanelExpansion(context, table);
} else if (isRow) {
encodeRowExpansion(context, table, columns, writer);
}
// Row index will have come back different from row expansion.
table.setRowIndex(rowIndex);
}
// Add tailing conditional row for this row object if required
List tailingRows = table.getConditionalRows(rowIndex, false);
for (Row r : tailingRows) encodeConditionalRow(context, r);
return innerTdDivRequired;
}
return false;
}
private static void encodeConditionalRow(FacesContext context, Row r) throws IOException {
ResponseWriter writer = context.getResponseWriter();
writer.startElement(HTML.TR_ELEM, null);
if (r.getStyle() != null) writer.writeAttribute(HTML.STYLE_ATTR, r.getStyle(), null);
if (r.getStyleClass() != null) writer.writeAttribute(HTML.CLASS_ATTR, "dt-cond-row " + r.getStyleClass(), null);
List children = r.getChildren();
List rowColumns = new ArrayList(children.size());
for (UIComponent kid : children)
if (kid instanceof Column)
rowColumns.add((Column)kid);
for (Column kid : rowColumns)
if (kid.isRendered())
encodeConditionalRowCell(context, kid);
writer.endElement(HTML.TR_ELEM);
}
private static void encodeConditionalRowCell(FacesContext context, Column c) throws IOException {
ResponseWriter writer = context.getResponseWriter();
writer.startElement(HTML.TD_ELEM, null);
writer.writeAttribute(HTML.COLSPAN_ATTR, c.getColspan(), null);
if (c.getStyle() != null) writer.writeAttribute(HTML.STYLE_ATTR, c.getStyle(), null);
if (c.getStyleClass() != null) writer.writeAttribute(HTML.CLASS_ATTR, c.getStyleClass(), null);
c.encodeAll(context);
writer.endElement(HTML.TD_ELEM);
}
private static void encodeRegularCell(FacesContext context, List columnSiblings, Column column, boolean selected, boolean resizable) throws IOException {
ResponseWriter writer = context.getResponseWriter();
Column nextColumn = DataTableRendererUtil.getNextColumn(column, columnSiblings);
boolean isCurrStacked = DataTableRendererUtil.isCurrColumnStacked(columnSiblings, column);
boolean isNextStacked = (nextColumn == null) ? false
: (nextColumn.isRendered() && nextColumn.isStacked());
boolean isCurrGrouped = column.getCurrGroupLength() > 0;
boolean isNextGrouped = isCurrGrouped ? false // No need to calculate next group if grouped
: column.isNextColumnGrouped();
if (isCurrGrouped) {
column.setCurrGroupLength(column.getCurrGroupLength()-1);
} else {
if (!isCurrStacked) {
writer.startElement(HTML.TD_ELEM, null);
if (column.getStyle() != null) writer.writeAttribute(HTML.STYLE_ELEM, column.getStyle(), null);
if (isNextGrouped) writer.writeAttribute(HTML.ROWSPAN_ATTR, column.findCurrGroupLength()+1, null);
CellEditor editor = column.getCellEditor();
String columnStyleClass = column.getStyleClass();
if (editor != null) {
columnStyleClass = columnStyleClass == null ? DataTableConstants.EDITABLE_COLUMN_CLASS : DataTableConstants.EDITABLE_COLUMN_CLASS + " " + columnStyleClass;
}
// Add alternating styling, except when last group is the same value, split by an expansion or conditional row
if (column.getValueExpression("groupBy") != null) {
if (column.isLastGroupDifferent()) column.setOddGroup(!column.isOddGroup());
if (columnStyleClass == null) columnStyleClass = "";
columnStyleClass += column.isOddGroup() ? " ui-datatable-group-odd" : " ui-datatable-group-even";
}
if (selected) columnStyleClass = columnStyleClass == null ? "ui-state-active ui-selected" : columnStyleClass + " ui-state-active ui-selected";
if (columnStyleClass != null) writer.writeAttribute(HTML.CLASS_ATTR, columnStyleClass, null);
if (resizable) writer.startElement(HTML.DIV_ELEM, null);
}
else {
writer.startElement("hr", null);
writer.endElement("hr");
}
column.encodeAll(context);
if (!isNextStacked) {
if (resizable) writer.endElement(HTML.DIV_ELEM);
writer.endElement(HTML.TD_ELEM);
}
}
}
private static void encodeRowExpansion(FacesContext context, DataTable table, List columns, ResponseWriter writer) throws IOException {
String rowVar = table.getVar();
String rowIndexVar = table.getRowIndexVar();
String clientId = table.getClientId(context);
String expandedRowId = context.getExternalContext().getRequestParameterMap().get(clientId + "_expandedRowId");
if (expandedRowId == null) {
expandedRowId = (String) context.getExternalContext().getRequestMap().get(clientId + "_expandedRowId");
}
Object model = table.getDataModel();
if (!(table.hasTreeDataModel())) throw new FacesException("DataTable : \"" + clientId + "\" must be bound to an instance of TreeDataModel when using sub-row expansion.");
TreeDataModel rootModel = (TreeDataModel)model;
rootModel.setRootIndex(expandedRowId);
table.getStateMap().get(rootModel.getRootData()).setExpanded(true);
table.setRowIndex(0);
if (rootModel.getRowCount() > 0)
while (rootModel.getRowIndex() < rootModel.getRowCount()) {
// System.out.println("----------");
// System.out.println(rootModel.getRootIndex());
// System.out.println(rootModel.getRowIndex());
// System.out.println("----------");
if (rowVar != null) context.getExternalContext().getRequestMap().put(rowVar, rootModel.getRowData());
if (rowIndexVar != null) context.getExternalContext().getRequestMap().put(rowIndexVar, rootModel.getRowIndex());
RowState rowState = table.getStateMap().get(rootModel.getRowData());
boolean selected = rowState.isSelected();
boolean expanded = rowState.isExpanded();
boolean unselectable = !rowState.isSelectable();
boolean visible = rowState.isVisible();
Map> rowToSelectedFieldsMap = table.getRowToSelectedFieldsMap();
List selectedCellExpressions = null;
if (rowToSelectedFieldsMap != null)
selectedCellExpressions = (List)(rowToSelectedFieldsMap.get(table.getRowData()));
context.getExternalContext().getRequestMap().put(table.getRowStateVar(), rowState);
String expandedClass = expanded ? DataTableConstants.EXPANDED_ROW_CLASS : "";
String alternatingClass = (rootModel.getRowIndex() % 2 == 0) ? DataTableConstants.EVEN_ROW_CLASS : DataTableConstants.ODD_ROW_CLASS;
String selectionClass = (selected && table.getSelectionMode() != null) ? "ui-selected ui-state-active" : "";
String unselectableClass = unselectable ? DataTableConstants.UNSELECTABLE_ROW_CLASS : "";
if (visible) {
writer.startElement(HTML.TR_ELEM, null);
writer.writeAttribute(HTML.ID_ATTR, clientId + "_row_" + expandedRowId + "." + rootModel.getRowIndex(), null);
writer.writeAttribute(HTML.CLASS_ATTR, DataTableConstants.ROW_CLASS + " " + alternatingClass + " " + selectionClass + " " + expandedClass + " " + unselectableClass, null);
for (Column kid : columns) {
if (kid.isRendered()) {
boolean cellSelected = false;
if (selectedCellExpressions != null) {
ValueExpression ve = kid.getValueExpression("selectBy") != null ? kid.getValueExpression("selectBy") : kid.getValueExpression("value");
if (ve != null)
cellSelected = selectedCellExpressions.contains(ve.getExpressionString());
}
encodeRegularCell(context, columns, kid, cellSelected, false);
}
}
writer.endElement(HTML.TR_ELEM);
if (expanded) {
int rowIndex = rootModel.getRowIndex();
context.getExternalContext().getRequestMap().put(clientId + "_expandedRowId", expandedRowId+"."+rowIndex);
PanelExpansion panelExpansion = table.getPanelExpansion();
RowExpansion rowExpansion = table.getRowExpansion();
boolean isPanel = panelExpansion != null;
boolean isRow = rowExpansion != null;
// Ensure that table.getTableId returns correctly for request map look
table.setRowIndex(-1);
if (isPanel && isRow) {
if (rowState.getExpansionType() == RowState.ExpansionType.ROW) {
encodeRowExpansion(context, table, columns, writer);
}
else if (rowState.getExpansionType() == RowState.ExpansionType.PANEL) {
encodeRowPanelExpansion(context, table);
}
} else if (isPanel) {
encodeRowPanelExpansion(context, table);
} else if (isRow) {
encodeRowExpansion(context, table, columns, writer);
}
rootModel = (TreeDataModel) table.getDataModel();
rootModel.setRootIndex(expandedRowId);
table.setRowIndex(rowIndex); // Row index will have come back different from row expansion.
context.getExternalContext().getRequestMap().put(clientId + "_expandedRowId", expandedRowId);
}
}
table.setRowIndex(rootModel.getRowIndex() + 1);
if (rowIndexVar != null) context.getExternalContext().getRequestMap().remove(rowIndexVar);
if (rowVar != null) context.getExternalContext().getRequestMap().remove(rowVar);
}
rootModel.setRootIndex(null);
table.setRowIndex(-1);
}
private static void encodeRowPanelExpansion(FacesContext context, DataTable table) throws IOException {
ResponseWriter writer = context.getResponseWriter();
Map params = context.getExternalContext().getRequestParameterMap();
String clientId = table.getClientId(context);
Object model = table.getDataModel();
String expandedRowId = params.get(clientId + "_expandedRowId");
if (expandedRowId == null) {
expandedRowId = (String) context.getExternalContext().getRequestMap().get(clientId + "_expandedRowId");
}
int sepIndex = expandedRowId.lastIndexOf('.');
String rootIndex = null;
if (sepIndex >= 0) {
rootIndex = expandedRowId.substring(0,sepIndex);
expandedRowId = expandedRowId.substring(sepIndex+1);
}
if (rootIndex != null) ((TreeDataModel)model).setRootIndex(rootIndex);
table.setRowIndex(Integer.parseInt(expandedRowId));
table.getStateMap().get(table.getRowData()).setExpanded(true);
writer.startElement(HTML.TR_ELEM, null);
writer.writeAttribute(HTML.CLASS_ATTR, DataTableConstants.EXPANDED_ROW_CONTENT_CLASS + " ui-widget-content " + DataTableConstants.UNSELECTABLE_ROW_CLASS , null);
writer.startElement(HTML.TD_ELEM, null);
int enabledColumns = 0;
for (Column c : table.getColumns()) if (c.isRendered() && !c.isStacked()) enabledColumns++;
writer.writeAttribute(HTML.COLSPAN_ATTR, enabledColumns, null);
table.getPanelExpansion().encodeAll(context);
writer.endElement(HTML.TD_ELEM);
writer.endElement(HTML.TR_ELEM);
table.setRowIndex(-1);
}
}
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