protected void encodeFilter(FacesContext context, DataTable table, UIColumn column)
throws IOException {
Map<String, String> params = context.getExternalContext().getRequestParameterMap();
ResponseWriter writer = context.getResponseWriter();
String separator = String.valueOf(UINamingContainer.getSeparatorChar(context));
String filterId = column.getContainerClientId(context) + separator + "filter";
String filterStyleClass = column.getFilterStyleClass();
String filterValue = null;
if (table.isReset()) {
filterValue = "";
} else {
if (params.containsKey(filterId)) {
filterValue = params.get(filterId);
} else {
ValueExpression filterValueVE = column.getValueExpression("filterValue");
if (filterValueVE != null) {
filterValue = (String) filterValueVE.getValue(context.getELContext());
} else {
filterValue = "";
}
}
}
if (column.getValueExpression("filterOptions") == null) {
filterStyleClass =
filterStyleClass == null
? DataTable.COLUMN_INPUT_FILTER_CLASS
: DataTable.COLUMN_INPUT_FILTER_CLASS + " " + filterStyleClass;
writer.startElement("input", null);
writer.writeAttribute("id", filterId, null);
writer.writeAttribute("name", filterId, null);
writer.writeAttribute("class", filterStyleClass, null);
writer.writeAttribute("value", filterValue, null);
writer.writeAttribute("autocomplete", "off", null);
if (column.getFilterStyle() != null)
writer.writeAttribute("style", column.getFilterStyle(), null);
if (column.getFilterMaxLength() != Integer.MAX_VALUE)
writer.writeAttribute("maxlength", column.getFilterMaxLength(), null);
writer.endElement("input");
} else {
filterStyleClass =
filterStyleClass == null
? DataTable.COLUMN_FILTER_CLASS
: DataTable.COLUMN_FILTER_CLASS + " " + filterStyleClass;
writer.startElement("select", null);
writer.writeAttribute("id", filterId, null);
writer.writeAttribute("name", filterId, null);
writer.writeAttribute("class", filterStyleClass, null);
SelectItem[] itemsArray = (SelectItem[]) getFilterOptions(column);
for (SelectItem item : itemsArray) {
Object itemValue = item.getValue();
writer.startElement("option", null);
writer.writeAttribute("value", item.getValue(), null);
if (itemValue != null && String.valueOf(itemValue).equals(filterValue)) {
writer.writeAttribute("selected", "selected", null);
}
writer.writeText(item.getLabel(), null);
writer.endElement("option");
}
writer.endElement("select");
}
}
protected void encodeColumnHeader(FacesContext context, DataTable table, UIColumn column)
throws IOException {
if (!column.isRendered()) {
return;
}
ResponseWriter writer = context.getResponseWriter();
String clientId = column.getContainerClientId(context);
Object tableSortBy = table.getSortBy();
Object columnSortBy = column.getSortBy();
boolean isSortable = columnSortBy != null;
boolean hasFilter = column.getFilterBy() != null;
String selectionMode = column.getSelectionMode();
String sortIcon = null;
boolean resizable = table.isResizableColumns() && column.isResizable();
String columnClass =
isSortable
? DataTable.COLUMN_HEADER_CLASS + " " + DataTable.SORTABLE_COLUMN_CLASS
: DataTable.COLUMN_HEADER_CLASS;
columnClass = hasFilter ? columnClass + " " + DataTable.FILTER_COLUMN_CLASS : columnClass;
columnClass =
selectionMode != null ? columnClass + " " + DataTable.SELECTION_COLUMN_CLASS : columnClass;
columnClass = resizable ? columnClass + " " + DataTable.RESIZABLE_COLUMN_CLASS : columnClass;
columnClass =
column.getStyleClass() != null ? columnClass + " " + column.getStyleClass() : columnClass;
if (isSortable) {
if (tableSortBy != null) {
if (table.isMultiSort()) {
List<SortMeta> sortMeta = table.getMultiSortMeta();
if (sortMeta != null) {
for (SortMeta meta : sortMeta) {
sortIcon =
resolveDefaultSortIcon(
columnSortBy, meta.getColumn().getSortBy(), meta.getSortOrder().name());
if (sortIcon != null) {
break;
}
}
}
} else {
sortIcon = resolveDefaultSortIcon(columnSortBy, tableSortBy, table.getSortOrder());
}
}
if (sortIcon == null) sortIcon = DataTable.SORTABLE_COLUMN_ICON_CLASS;
else columnClass += " ui-state-active";
}
String style = column.getStyle();
String width = column.getWidth();
if (width != null) {
String unit = width.endsWith("%") ? "" : "px";
if (style != null) style = style + ";width:" + width + unit;
else style = "width:" + width + unit;
}
writer.startElement("th", null);
writer.writeAttribute("id", clientId, null);
writer.writeAttribute("class", columnClass, null);
writer.writeAttribute("role", "columnheader", null);
if (style != null) writer.writeAttribute("style", style, null);
if (column.getRowspan() != 1) writer.writeAttribute("rowspan", column.getRowspan(), null);
if (column.getColspan() != 1) writer.writeAttribute("colspan", column.getColspan(), null);
if (hasFilter) {
table.enableFiltering();
String filterPosition = column.getFilterPosition();
if (filterPosition.equals("bottom")) {
encodeColumnHeaderContent(context, column, sortIcon);
encodeFilter(context, table, column);
} else if (filterPosition.equals("top")) {
encodeFilter(context, table, column);
encodeColumnHeaderContent(context, column, sortIcon);
} else {
throw new FacesException(
filterPosition
+ " is an invalid option for filterPosition, valid values are 'bottom' or 'top'.");
}
} else {
encodeColumnHeaderContent(context, column, sortIcon);
}
if (selectionMode != null && selectionMode.equalsIgnoreCase("multiple")) {
encodeCheckbox(context, table, false, column.isDisabledSelection(), HTML.CHECKBOX_ALL_CLASS);
}
writer.endElement("th");
}