/**
* Incrementally builds the menu from the contribution items. This method leaves out double
* separators and separators in the first or last position.
*
* @param force <code>true</code> means update even if not dirty, and <code>false</code> for
* normal incremental updating
* @param recursive <code>true</code> means recursively update all submenus, and <code>false
* </code> means just this menu
*/
protected void update(boolean force, boolean recursive) {
if (isDirty() || force) {
if (menuExist()) {
// clean contains all active items without double separators
IContributionItem[] items = getItems();
List clean = new ArrayList(items.length);
IContributionItem separator = null;
for (int i = 0; i < items.length; ++i) {
IContributionItem ci = items[i];
if (!isChildVisible(ci)) {
continue;
}
if (ci.isSeparator()) {
// delay creation until necessary
// (handles both adjacent separators, and separator at end)
separator = ci;
} else {
if (separator != null) {
if (clean.size() > 0) {
clean.add(separator);
}
separator = null;
}
clean.add(ci);
}
}
// remove obsolete (removed or non active)
Item[] mi = getMenuItems();
for (int i = 0; i < mi.length; i++) {
Object data = mi[i].getData();
if (data == null || !clean.contains(data)) {
mi[i].dispose();
} else if (data instanceof IContributionItem
&& ((IContributionItem) data).isDynamic()
&& ((IContributionItem) data).isDirty()) {
mi[i].dispose();
}
}
// add new
mi = getMenuItems();
int srcIx = 0;
int destIx = 0;
for (Iterator e = clean.iterator(); e.hasNext(); ) {
IContributionItem src = (IContributionItem) e.next();
IContributionItem dest;
// get corresponding item in SWT widget
if (srcIx < mi.length) {
dest = (IContributionItem) mi[srcIx].getData();
} else {
dest = null;
}
if (dest != null && src.equals(dest)) {
srcIx++;
destIx++;
} else if (dest != null && dest.isSeparator() && src.isSeparator()) {
mi[srcIx].setData(src);
srcIx++;
destIx++;
} else {
int start = getMenuItemCount();
doItemFill(src, destIx);
int newItems = getMenuItemCount() - start;
for (int i = 0; i < newItems; i++) {
Item item = getMenuItem(destIx++);
item.setData(src);
}
}
// May be we can optimize this call. If the menu has just
// been created via the call src.fill(fMenuBar, destIx) then
// the menu has already been updated with update(true)
// (see MenuManager). So if force is true we do it again. But
// we can't set force to false since then information for the
// sub sub menus is lost.
if (recursive) {
IContributionItem item = src;
if (item instanceof SubContributionItem) {
item = ((SubContributionItem) item).getInnerItem();
}
if (item instanceof IMenuManager) {
((IMenuManager) item).updateAll(force);
}
}
}
// remove any old menu items not accounted for
for (; srcIx < mi.length; srcIx++) {
mi[srcIx].dispose();
}
setDirty(false);
}
} else {
// I am not dirty. Check if I must recursivly walk down the hierarchy.
if (recursive) {
IContributionItem[] items = getItems();
for (int i = 0; i < items.length; ++i) {
IContributionItem ci = items[i];
if (ci instanceof IMenuManager) {
IMenuManager mm = (IMenuManager) ci;
if (isChildVisible(mm)) {
mm.updateAll(force);
}
}
}
}
}
updateMenuItem();
}
/* (non-Javadoc)
* @see org.eclipse.jface.action.IContributionItem#update()
*/
public void update() {
updateMenuItem();
}