| /******************************************************************************* |
| * Copyright (c) 2000, 2011 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.ui.viewsupport; |
| |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.jface.viewers.ViewerFilter; |
| |
| import org.eclipse.jdt.core.Flags; |
| import org.eclipse.jdt.core.IField; |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.IMember; |
| import org.eclipse.jdt.core.IType; |
| import org.eclipse.jdt.core.JavaModelException; |
| |
| import org.eclipse.jdt.internal.corext.util.JavaModelUtil; |
| |
| /** |
| * Filter for the methods viewer. |
| * Changing a filter property does not trigger a refiltering of the viewer |
| */ |
| public class MemberFilter extends ViewerFilter { |
| |
| public static final int FILTER_NONPUBLIC= 1; |
| public static final int FILTER_STATIC= 2; |
| public static final int FILTER_FIELDS= 4; |
| public static final int FILTER_LOCALTYPES= 8; |
| |
| private int fFilterProperties; |
| |
| |
| /** |
| * Modifies filter and add a property to filter for |
| * @param filter the filter to add |
| */ |
| public final void addFilter(int filter) { |
| fFilterProperties |= filter; |
| } |
| /** |
| * Modifies filter and remove a property to filter for |
| * @param filter the filter to remove |
| */ |
| public final void removeFilter(int filter) { |
| fFilterProperties &= (-1 ^ filter); |
| } |
| /** |
| * Tests if a property is filtered |
| * @param filter the filter to test |
| * @return returns the result of the test |
| */ |
| public final boolean hasFilter(int filter) { |
| return (fFilterProperties & filter) != 0; |
| } |
| |
| /* |
| * @see ViewerFilter#select(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object) |
| */ |
| @Override |
| public boolean select(Viewer viewer, Object parentElement, Object element) { |
| try { |
| if (element instanceof IMember) { |
| IMember member= (IMember) element; |
| int memberType= member.getElementType(); |
| |
| if (hasFilter(FILTER_FIELDS) && memberType == IJavaElement.FIELD) { |
| return false; |
| } |
| |
| if (hasFilter(FILTER_LOCALTYPES) && memberType == IJavaElement.TYPE && isLocalType((IType) member)) { |
| return false; |
| } |
| |
| if (member.getElementName().startsWith("<")) { // filter out <clinit> //$NON-NLS-1$ |
| return false; |
| } |
| int flags= member.getFlags(); |
| if (hasFilter(FILTER_STATIC) && (Flags.isStatic(flags) || isFieldInInterfaceOrAnnotation(member)) && memberType != IJavaElement.TYPE) { |
| return false; |
| } |
| if (hasFilter(FILTER_NONPUBLIC) && !Flags.isPublic(flags) && !isMemberInInterfaceOrAnnotation(member) && !isTopLevelType(member) && !isEnumConstant(member)) { |
| return false; |
| } |
| } |
| } catch (JavaModelException e) { |
| // ignore |
| } |
| return true; |
| } |
| |
| private boolean isLocalType(IType type) { |
| IJavaElement parent= type.getParent(); |
| return parent instanceof IMember && !(parent instanceof IType); |
| } |
| |
| private boolean isMemberInInterfaceOrAnnotation(IMember member) throws JavaModelException { |
| IType parent= member.getDeclaringType(); |
| return parent != null && JavaModelUtil.isInterfaceOrAnnotation(parent); |
| } |
| |
| private boolean isFieldInInterfaceOrAnnotation(IMember member) throws JavaModelException { |
| return (member.getElementType() == IJavaElement.FIELD) && JavaModelUtil.isInterfaceOrAnnotation(member.getDeclaringType()); |
| } |
| |
| private boolean isTopLevelType(IMember member) { |
| IType parent= member.getDeclaringType(); |
| return parent == null; |
| } |
| |
| private boolean isEnumConstant(IMember member) throws JavaModelException { |
| return (member.getElementType() == IJavaElement.FIELD) && ((IField)member).isEnumConstant(); |
| } |
| } |