/**
* Positions the TableCursor over the cell at the given row and column in the parent table.
*
* @param row the index of the row for the cell to select
* @param column the index of column for the cell to select
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setSelection(int row, int column) {
checkWidget();
int columnCount = table.getColumnCount();
int maxColumnIndex = columnCount == 0 ? 0 : columnCount - 1;
if (row < 0 || row >= table.getItemCount() || column < 0 || column > maxColumnIndex)
SWT.error(SWT.ERROR_INVALID_ARGUMENT);
setRowColumn(row, column, false);
}
void tableMouseDown(Event event) {
if (isDisposed() || !isVisible()) return;
Point pt = new Point(event.x, event.y);
int lineWidth = table.getLinesVisible() ? table.getGridLineWidth() : 0;
TableItem item = table.getItem(pt);
if ((table.getStyle() & SWT.FULL_SELECTION) != 0) {
if (item == null) return;
} else {
int start = item != null ? table.indexOf(item) : table.getTopIndex();
int end = table.getItemCount();
Rectangle clientRect = table.getClientArea();
for (int i = start; i < end; i++) {
TableItem nextItem = table.getItem(i);
Rectangle rect = nextItem.getBounds(0);
if (pt.y >= rect.y && pt.y < rect.y + rect.height + lineWidth) {
item = nextItem;
break;
}
if (rect.y > clientRect.y + clientRect.height) return;
}
if (item == null) return;
}
TableColumn newColumn = null;
int columnCount = table.getColumnCount();
if (columnCount == 0) {
if ((table.getStyle() & SWT.FULL_SELECTION) == 0) {
Rectangle rect = item.getBounds(0);
rect.width += lineWidth;
rect.height += lineWidth;
if (!rect.contains(pt)) return;
}
} else {
for (int i = 0; i < columnCount; i++) {
Rectangle rect = item.getBounds(i);
rect.width += lineWidth;
rect.height += lineWidth;
if (rect.contains(pt)) {
newColumn = table.getColumn(i);
break;
}
}
if (newColumn == null) {
if ((table.getStyle() & SWT.FULL_SELECTION) == 0) return;
newColumn = table.getColumn(0);
}
}
setRowColumn(item, newColumn, true);
setFocus();
return;
}
void keyDown(Event event) {
if (row == null) return;
switch (event.character) {
case SWT.CR:
notifyListeners(SWT.DefaultSelection, new Event());
return;
}
int rowIndex = table.indexOf(row);
int columnIndex = column == null ? 0 : table.indexOf(column);
switch (event.keyCode) {
case SWT.ARROW_UP:
setRowColumn(Math.max(0, rowIndex - 1), columnIndex, true);
break;
case SWT.ARROW_DOWN:
setRowColumn(Math.min(rowIndex + 1, table.getItemCount() - 1), columnIndex, true);
break;
case SWT.ARROW_LEFT:
case SWT.ARROW_RIGHT:
{
int columnCount = table.getColumnCount();
if (columnCount == 0) break;
int[] order = table.getColumnOrder();
int index = 0;
while (index < order.length) {
if (order[index] == columnIndex) break;
index++;
}
if (index == order.length) index = 0;
int leadKey = (getStyle() & SWT.RIGHT_TO_LEFT) != 0 ? SWT.ARROW_RIGHT : SWT.ARROW_LEFT;
if (event.keyCode == leadKey) {
setRowColumn(rowIndex, order[Math.max(0, index - 1)], true);
} else {
setRowColumn(rowIndex, order[Math.min(columnCount - 1, index + 1)], true);
}
break;
}
case SWT.HOME:
setRowColumn(0, columnIndex, true);
break;
case SWT.END:
{
int i = table.getItemCount() - 1;
setRowColumn(i, columnIndex, true);
break;
}
case SWT.PAGE_UP:
{
int index = table.getTopIndex();
if (index == rowIndex) {
Rectangle rect = table.getClientArea();
TableItem item = table.getItem(index);
Rectangle itemRect = item.getBounds(0);
rect.height -= itemRect.y;
int height = table.getItemHeight();
int page = Math.max(1, rect.height / height);
index = Math.max(0, index - page + 1);
}
setRowColumn(index, columnIndex, true);
break;
}
case SWT.PAGE_DOWN:
{
int index = table.getTopIndex();
Rectangle rect = table.getClientArea();
TableItem item = table.getItem(index);
Rectangle itemRect = item.getBounds(0);
rect.height -= itemRect.y;
int height = table.getItemHeight();
int page = Math.max(1, rect.height / height);
int end = table.getItemCount() - 1;
index = Math.min(end, index + page - 1);
if (index == rowIndex) {
index = Math.min(end, index + page - 1);
}
setRowColumn(index, columnIndex, true);
break;
}
}
}