Example usage for org.eclipse.jdt.core IClassFile isInterface

Introduction

In this page you can find the example usage for org.eclipse.jdt.core IClassFile isInterface.

Prototype

boolean isInterface() throws JavaModelException;

Source Link

Document

Returns whether this type represents an interface.

Usage

From source file:de.loskutov.bco.ui.JdtUtils.java

License:Open Source License

/**
 * Check if java element is an interface or abstract method or a method from
 * interface.//w  w  w .ja v a2  s .  c om
 */
public static boolean isAbstractOrInterface(IJavaElement javaEl) {
    if (javaEl == null) {
        return true;
    }
    boolean abstractOrInterface = false;
    try {
        switch (javaEl.getElementType()) {
        case IJavaElement.CLASS_FILE:
            IClassFile classFile = (IClassFile) javaEl;
            if (isOnClasspath(javaEl)) {
                abstractOrInterface = classFile.isInterface();
            } /*else {
               this is the case for eclipse-generated class files.
               if we do not perform the check in if, then we will have java model
               exception on classFile.isInterface() call.
              }*/
            break;
        case IJavaElement.COMPILATION_UNIT:
            ICompilationUnit cUnit = (ICompilationUnit) javaEl;
            IType type = cUnit.findPrimaryType();
            abstractOrInterface = type != null && type.isInterface();
            break;
        case IJavaElement.TYPE:
            abstractOrInterface = ((IType) javaEl).isInterface();
            break;
        case IJavaElement.METHOD:
            // test for "abstract" flag on method in a class
            abstractOrInterface = Flags.isAbstract(((IMethod) javaEl).getFlags());
            // "abstract" flags could be not exist on interface methods
            if (!abstractOrInterface) {
                IType ancestor = (IType) javaEl.getAncestor(IJavaElement.TYPE);
                abstractOrInterface = ancestor != null && ancestor.isInterface();
            }
            break;
        default:
            IType ancestor1 = (IType) javaEl.getAncestor(IJavaElement.TYPE);
            abstractOrInterface = ancestor1 != null && ancestor1.isInterface();
            break;
        }
    } catch (JavaModelException e) {
        // No point to log it here
        // BytecodeOutlinePlugin.log(e, IStatus.ERROR);
    }
    return abstractOrInterface;
}

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