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 renderChanges(final Widget widget) throws IOException {
Tree tree = (Tree) widget;
ControlLCAUtil.writeChanges(tree);
updateSelectionListener(tree);
writeHeaderHeight(tree);
writeHeaderVisible(tree);
writeColumnOrder(tree);
writeScrollLeft(tree);
writeOverflow(tree);
WidgetLCAUtil.writeCustomVariant(tree);
}
public void readData(final Widget widget) {
Tree tree = (Tree) widget;
readSelection(tree);
readScrollPosition(tree);
processWidgetSelectedEvent(tree);
processWidgetDefaultSelectedEvent(tree);
ControlLCAUtil.processMouseEvents(tree);
ControlLCAUtil.processKeyEvents(tree);
ControlLCAUtil.processMenuDetect(tree);
WidgetLCAUtil.processHelp(tree);
}
private static void readScrollPosition(final Tree tree) {
String left = WidgetLCAUtil.readPropertyValue(tree, "scrollLeft");
String top = WidgetLCAUtil.readPropertyValue(tree, "scrollTop");
if (left != null && top != null) {
Object adapter = tree.getAdapter(ITreeAdapter.class);
final ITreeAdapter treeAdapter = (ITreeAdapter) adapter;
final int newScrollLeft = parsePosition(left);
final int newScrollTop = parsePosition(top);
final int oldScrollTop = treeAdapter.getScrollTop();
treeAdapter.setScrollLeft(newScrollLeft);
treeAdapter.setScrollTop(newScrollTop);
if (oldScrollTop != newScrollTop) {
ProcessActionRunner.add(
new Runnable() {
public void run() {
treeAdapter.checkAllData(tree);
}
});
}
}
}
private static void processWidgetDefaultSelectedEvent(final Tree tree) {
HttpServletRequest request = ContextProvider.getRequest();
String eventName = JSConst.EVENT_WIDGET_DEFAULT_SELECTED;
if (WidgetLCAUtil.wasEventSent(tree, eventName)) {
String itemId = request.getParameter(eventName + ".item");
Item treeItem = (Item) WidgetUtil.find(tree, itemId);
int eventType = SelectionEvent.WIDGET_DEFAULT_SELECTED;
SelectionEvent event = new SelectionEvent(tree, treeItem, eventType);
event.stateMask = EventLCAUtil.readStateMask(JSConst.EVENT_WIDGET_SELECTED_MODIFIER);
event.processEvent();
}
}
private static void writeOverflow(final Tree tree) throws IOException {
boolean hasHChanged =
WidgetLCAUtil.hasChanged(tree, PROP_HAS_H_SCROLL_BAR, hasHScrollBar(tree), Boolean.TRUE);
boolean hasVChanged =
WidgetLCAUtil.hasChanged(tree, PROP_HAS_V_SCROLL_BAR, hasVScrollBar(tree), Boolean.TRUE);
if (hasHChanged || hasVChanged) {
boolean scrollX = hasHScrollBar(tree).booleanValue();
boolean scrollY = hasVScrollBar(tree).booleanValue();
String overflow;
if (scrollX && scrollY) {
overflow = "scroll";
} else if (scrollX) {
overflow = "scrollX";
} else if (scrollY) {
overflow = "scrollY";
} else {
overflow = "hidden";
}
JSWriter writer = JSWriter.getWriterFor(tree);
writer.set("treeOverflow", overflow);
}
}
private void writeColumnOrder(final Tree tree) throws IOException {
JSWriter writer = JSWriter.getWriterFor(tree);
int[] values = tree.getColumnOrder();
if (values.length > 0) {
Integer[] newValue = new Integer[values.length];
for (int i = 0; i < values.length; i++) {
newValue[i] = new Integer(values[i]);
}
if (WidgetLCAUtil.hasChanged(tree, PROP_COLUMN_ORDER, newValue, new Integer[] {})) {
writer.set(PROP_COLUMN_ORDER, "columnOrder", newValue, null);
}
}
}
private static void processWidgetSelectedEvent(final Tree tree) {
HttpServletRequest request = ContextProvider.getRequest();
String eventName = JSConst.EVENT_WIDGET_SELECTED;
if (WidgetLCAUtil.wasEventSent(tree, eventName)) {
Rectangle bounds = new Rectangle(0, 0, 0, 0);
String itemId = request.getParameter(eventName + ".item");
Item treeItem = (Item) WidgetUtil.find(tree, itemId);
String detailStr = request.getParameter(eventName + ".detail");
int detail = "check".equals(detailStr) ? SWT.CHECK : SWT.NONE;
int eventType = SelectionEvent.WIDGET_SELECTED;
int stateMask = EventLCAUtil.readStateMask(JSConst.EVENT_WIDGET_SELECTED_MODIFIER);
SelectionEvent event =
new SelectionEvent(tree, treeItem, eventType, bounds, stateMask, null, true, detail);
event.processEvent();
}
}
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);
}
private static void readSelection(final Tree tree) {
String value = WidgetLCAUtil.readPropertyValue(tree, "selection");
if (value != null) {
String[] values = value.split(",");
TreeItem[] selectedItems = new TreeItem[values.length];
boolean validItemFound = false;
for (int i = 0; i < values.length; i++) {
selectedItems[i] = (TreeItem) WidgetUtil.find(tree, values[i]);
if (selectedItems[i] != null) {
validItemFound = true;
}
}
if (!validItemFound) {
selectedItems = new TreeItem[0];
}
tree.setSelection(selectedItems);
}
}