/**
* Sort the grid according to the specified column. If the column is already sorted, reverse sort
* it.
*
* @param column the column to sort
* @throws IndexOutOfBoundsException
*/
public void sortColumn(int column) {
if (column == columnSortList.getPrimaryColumn()) {
sortColumn(column, !columnSortList.isPrimaryAscending());
} else {
sortColumn(column, true);
}
}
@Override
public void onSortColumn(
SortableGrid grid, ColumnSortList sortList, SortableGrid.ColumnSorterCallback callback) {
// Get the primary column and sort order
int column = sortList.getPrimaryColumn();
boolean ascending = sortList.isPrimaryAscending();
// Get all of the cell elements
SelectionGridCellFormatter formatter = grid.getSelectionGridCellFormatter();
int rowCount = grid.getRowCount();
List<Element> tdElems = new ArrayList<Element>(rowCount);
for (int i = 0; i < rowCount; i++) {
tdElems.add(formatter.getRawElement(i, column));
}
// Sort the cell elements
if (ascending) {
Collections.sort(
tdElems,
new Comparator<Element>() {
public int compare(Element o1, Element o2) {
return o1.getInnerText().compareTo(o2.getInnerText());
}
});
} else {
Collections.sort(
tdElems,
new Comparator<Element>() {
public int compare(Element o1, Element o2) {
return o2.getInnerText().compareTo(o1.getInnerText());
}
});
}
// Convert tdElems to trElems, reversing if needed
Element[] trElems = new Element[rowCount];
for (int i = 0; i < rowCount; i++) {
trElems[i] = DOM.getParent(tdElems.get(i));
}
// Use the callback to complete the sorting
callback.onSortingComplete(trElems);
}
/**
* Sort the grid according to the specified column.
*
* @param column the column to sort
* @param ascending sort the column in ascending order
* @throws IndexOutOfBoundsException
*/
public void sortColumn(int column, boolean ascending) {
// Verify the column bounds
if (column < 0) {
throw new IndexOutOfBoundsException(
"Cannot access a column with a negative index: " + column);
} else if (column >= numColumns) {
throw new IndexOutOfBoundsException(
"Column index: " + column + ", Column size: " + numColumns);
}
// Add the sorting to the list of sorted columns
columnSortList.add(new ColumnSortInfo(column, ascending));
// Use the onSort method to actually sort the column
Element[] selectedRows = getSelectedRowsMap().values().toArray(new Element[0]);
deselectAllRows();
getColumnSorter(true)
.onSortColumn(this, columnSortList, new SortableGrid.ColumnSorterCallback(selectedRows));
}