/**
* Returns whether elements of the given project or jar can see the given focus (an IJavaProject
* or a JarPackageFragmentRot) either because the focus is part of the project or the jar, or
* because it is accessible throught the project's classpath
*/
public static boolean canSeeFocus(SearchPattern pattern, IPath projectOrJarPath) {
try {
IJavaModel model = JavaModelManager.getJavaModelManager().getJavaModel();
IJavaProject project = getJavaProject(projectOrJarPath, model);
IJavaElement[] focuses = getFocusedElementsAndTypes(pattern, project, null);
if (focuses.length == 0) return false;
if (project != null) {
return canSeeFocus(focuses, (JavaProject) project, null);
}
// projectOrJarPath is a jar
// it can see the focus only if it is on the classpath of a project that can see the focus
IJavaProject[] allProjects = model.getJavaProjects();
for (int i = 0, length = allProjects.length; i < length; i++) {
JavaProject otherProject = (JavaProject) allProjects[i];
IClasspathEntry entry = otherProject.getClasspathEntryFor(projectOrJarPath);
if (entry != null && entry.getEntryKind() == IClasspathEntry.CPE_LIBRARY) {
if (canSeeFocus(focuses, otherProject, null)) {
return true;
}
}
}
return false;
} catch (JavaModelException e) {
return false;
}
}
