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");
}
}
