private static void updateSelectionListener(final Tree tree) throws IOException {
Boolean newValue = Boolean.valueOf(SelectionEvent.hasListener(tree));
String prop = PROP_SELECTION_LISTENERS;
if (WidgetLCAUtil.hasChanged(tree, prop, newValue, Boolean.FALSE)) {
JSWriter writer = JSWriter.getWriterFor(tree);
writer.set("selectionListeners", newValue);
}
}
public void preserveValues(final Widget widget) {
Tree tree = (Tree) widget;
ControlLCAUtil.preserveValues((Control) widget);
IWidgetAdapter adapter = WidgetUtil.getAdapter(tree);
adapter.preserve(PROP_SELECTION_LISTENERS, Boolean.valueOf(SelectionEvent.hasListener(tree)));
adapter.preserve(PROP_HEADER_HEIGHT, new Integer(tree.getHeaderHeight()));
adapter.preserve(PROP_HEADER_VISIBLE, Boolean.valueOf(tree.getHeaderVisible()));
int[] values = tree.getColumnOrder();
Integer[] columnOrder = new Integer[values.length];
for (int i = 0; i < values.length; i++) {
columnOrder[i] = new Integer(values[i]);
}
adapter.preserve(PROP_COLUMN_ORDER, columnOrder);
adapter.preserve(PROP_SCROLL_LEFT, getScrollLeft(tree));
adapter.preserve(PROP_HAS_H_SCROLL_BAR, hasHScrollBar(tree));
adapter.preserve(PROP_HAS_V_SCROLL_BAR, hasVScrollBar(tree));
WidgetLCAUtil.preserveCustomVariant(tree);
}