private void handleRowClick(MouseDownEvent event, TableRowElement row) {
int modifiers = KeyboardShortcut.getModifierValue(event.getNativeEvent());
modifiers &= ~KeyboardShortcut.ALT; // ALT has no effect
if (!allowMultiSelect_) modifiers = KeyboardShortcut.NONE;
// We'll treat Ctrl and Meta as equivalent--and normalize to Ctrl.
if (KeyboardShortcut.META == (modifiers & KeyboardShortcut.META))
modifiers |= KeyboardShortcut.CTRL;
modifiers &= ~KeyboardShortcut.META;
if (modifiers == KeyboardShortcut.NONE) {
// Select only the target row
clearSelection();
setSelected(row, true);
} else if (modifiers == KeyboardShortcut.CTRL) {
// Toggle the target row
setSelected(row, !isSelected(row));
} else {
// SHIFT or CTRL+SHIFT
int target = row.getRowIndex();
Integer min = null;
Integer max = null;
for (TableRowElement selectedRow : selectedRows_) {
if (min == null) min = selectedRow.getRowIndex();
max = selectedRow.getRowIndex();
}
int offset; // selection offset
int length; // selection length
if (min == null) {
// Nothing is selected
offset = target;
length = 1;
} else if (target < min) {
// Select target..max
offset = target;
length = max - target + 1;
} else if (target > max) {
offset = min;
length = target - min + 1;
} else {
// target is in between min and max
if (modifiers == (KeyboardShortcut.CTRL | KeyboardShortcut.SHIFT)) {
offset = min;
length = target - min + 1;
} else {
offset = target;
length = 1;
}
}
clearSelection();
if (length > 0) {
setSelectedPhysical(offset, length, true);
}
}
}
public ArrayList<Integer> getSelectedRowIndexes() {
sortSelectedRows();
ArrayList<Integer> results = new ArrayList<Integer>();
for (TableRowElement row : selectedRows_)
results.add(codec_.physicalOffsetToLogicalOffset(table_, row.getRowIndex()));
return results;
}
private int removeTopRows(TableSectionElement tbody, int rowCount) {
while (rowCount > 0 && tbody.getRows().getLength() >= 0) {
TableRowElement topRow = tbody.getRows().getItem(0);
if (codec_.isValueRow(topRow)) rowCount--;
selectedRows_.remove(topRow);
topRow.removeFromParent();
}
if (tbody.getRows().getLength() > 0) codec_.onRowsChanged(tbody);
else tbody.removeFromParent();
return rowCount;
}
public void setSelected(TableRowElement row, boolean selected) {
try {
if (row.getParentElement().getParentElement() != table_) return;
} catch (NullPointerException npe) {
return;
}
boolean isCurrentlySelected = isSelected(row);
if (isCurrentlySelected == selected) return;
if (selected && !codec_.isValueRow(row)) return;
setStyleName(row, selectedClassName_, selected);
if (selected) selectedRows_.add(row);
else selectedRows_.remove(row);
if (selected && !allowMultiSelect_) {
Scheduler.get()
.scheduleDeferred(
new ScheduledCommand() {
public void execute() {
fireEvent(new SelectionChangedEvent());
}
});
}
}
public Rectangle getSelectionRect() {
if (selectedRows_.size() == 0) return null;
sortSelectedRows();
TableRowElement first = selectedRows_.get(0);
TableRowElement last = selectedRows_.get(selectedRows_.size() - 1);
int top = first.getOffsetTop();
int bottom = last.getOffsetTop() + last.getOffsetHeight();
int left = first.getOffsetLeft();
int width = first.getOffsetWidth();
return new Rectangle(left, top, width, bottom - top);
}
private boolean isSelected(TableRowElement tr) {
return tr.getClassName().contains(selectedClassName_);
}