Bug 6238 jar packager: ide freezes on page flip, no progress shown
i selected org.eclipse.jdt.ui org.eclipse.jdt.ui.tests.refactoring (couple thousands of files) and opened the jar packager or flipping the page the whole ide froze. and there was no progress report shown. it took more or less 2 minutes - of total freeze - to flip to the other wizard page. i suggest performing it in another thread and showing progress
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/jarpackager/CheckboxTreeAndListGroup.java
*	Answer a collection of all of the checked elements in the tree portion
	 *	of self
	 *
	 *	@return java.util.Vector
	 */
	public Set getAllCheckedTreeItems() {
		return new HashSet(fCheckedStateStore.keySet());
	}
	/**
	 *	Answers the number of elements that have been checked by the
	 *	user.
	 *
	 *	@return int
	 */
	public int getCheckedElementCount() {
		return fCheckedStateStore.size();
	}
	/**
	 *	Returns a count of the number of list items associated with a
	 *	given tree item.
	 *
	 *	@return int
	 *	@param treeElement java.lang.Object
	 */
	protected int getListItemsSize(Object treeElement) {
		Object[] elements= getListElements(treeElement);
		return elements.length;
	}
	/**
	 * Gets the table that displays the folder content