Example usage for org.eclipse.jdt.core ITypeRoot getAncestor

Introduction

In this page you can find the example usage for org.eclipse.jdt.core ITypeRoot getAncestor.

Prototype

IJavaElement getAncestor(int ancestorType);

Source Link

Document

Returns this Java element or the first ancestor of this element that has the given type.

Usage

From source file:org.eclipse.recommenders.internal.rcp.JavaElementSelections.java

License:Open Source License

private static boolean isInvalidSelection(ITypeRoot root, final int offset) {
    try {// w  w  w  .  ja v  a 2s. c  om
        if (!root.exists()) {
            return true;
        }
        // check whether the type root is part of an package fragment root. If not, it's an invalid selection and
        // all resolutions are likely to fail. Thus, return true (=invalid):
        IJavaElement ancestor = root.getAncestor(IJavaProject.PACKAGE_FRAGMENT_ROOT);
        if (!ancestor.exists()) {
            return true;
        }
        ISourceRange range = root.getSourceRange();
        return range == null || offset < 0 || offset > range.getLength();
    } catch (Exception e) {
        log(ERROR_EXCEPTION_WHILE_CHECKING_OFFSETS, e);
        return false;
    }
}

---