Bug 219901 [Undo] new file creation subjec to Undo (file deleted without warning)
when creating a new file by right clicking on your project in the project explorer new->file this action is put on the undo/redo stack. Pressing Ctrl-Z to undo this action will thus delete your file. As this stack is separate from the stack in the editor , one can create a new file, work for a long time, then inadvertently press ctrl-z to undo a code change while having the focus on the project explorer and irrevocably lose their file. Redo will create a new EMPTY file; the work is gone, forever. This appears to only work for the "new file", not for "new->source file" etc. Although some may perceive this as a feature, it is hard to imagine a scenario where ctrl-z should permanently delete a file without warning.
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/dialogs/WizardNewFileCreationPage.java
}
		validatePage();
		
		setErrorMessage(null);
		setMessage(null);
		setControl(topLevel);
	}
	/**
	 * Creates a file resource given the file handle and contents.
	 * 
	 * @param fileHandle
	 *            the file handle to create a file resource with
	 * @param contents
	 *            the initial contents of the new file resource, or
	 *            <code>null</code> if none (equivalent to an empty stream)
	 * @param monitor
	 *            the progress monitor to show visual progress with
	 * @exception CoreException
	 *                if the operation fails
	 * @exception OperationCanceledException
	 *                if the operation is canceled
	 * 
	 * @deprecated As of 3.3, use or override {@link #createNewFile()} which
	 *             uses the undoable operation support. To supply customized
	 *             file content for a subclass, use
	 *             {@link #getInitialContents()}.
	 */
	protected void createFile(IFile fileHandle, InputStream contents,
			IProgressMonitor monitor) throws CoreException {
		if (contents == null) {