| /******************************************************************************* |
| * Copyright (c) 2000, 2004 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.core; |
| |
| import org.eclipse.jdt.core.IJavaElementDelta; |
| |
| /** |
| * A simple Java element delta that remembers the kind of changes only. |
| */ |
| public class SimpleDelta { |
| |
| /* |
| * @see IJavaElementDelta#getKind() |
| */ |
| protected int kind = 0; |
| |
| /* |
| * @see IJavaElementDelta#getFlags() |
| */ |
| protected int changeFlags = 0; |
| |
| /* |
| * Marks this delta as added |
| */ |
| public void added() { |
| this.kind = IJavaElementDelta.ADDED; |
| } |
| |
| /* |
| * Marks this delta as changed with the given change flag |
| */ |
| public void changed(int flags) { |
| this.kind = IJavaElementDelta.CHANGED; |
| this.changeFlags |= flags; |
| } |
| |
| /* |
| * @see IJavaElementDelta#getFlags() |
| */ |
| public int getFlags() { |
| return this.changeFlags; |
| } |
| |
| /* |
| * @see IJavaElementDelta#getKind() |
| */ |
| public int getKind() { |
| return this.kind; |
| } |
| |
| /* |
| * Mark this delta has a having a modifiers change |
| */ |
| public void modifiers() { |
| changed(IJavaElementDelta.F_MODIFIERS); |
| } |
| |
| /* |
| * Marks this delta as removed |
| */ |
| public void removed() { |
| this.kind = IJavaElementDelta.REMOVED; |
| this.changeFlags = 0; |
| } |
| |
| /* |
| * Mark this delta has a having a super type change |
| */ |
| public void superTypes() { |
| changed(IJavaElementDelta.F_SUPER_TYPES); |
| } |
| |
| protected void toDebugString(StringBuffer buffer) { |
| buffer.append("["); //$NON-NLS-1$ |
| switch (getKind()) { |
| case IJavaElementDelta.ADDED : |
| buffer.append('+'); |
| break; |
| case IJavaElementDelta.REMOVED : |
| buffer.append('-'); |
| break; |
| case IJavaElementDelta.CHANGED : |
| buffer.append('*'); |
| break; |
| default : |
| buffer.append('?'); |
| break; |
| } |
| buffer.append("]: {"); //$NON-NLS-1$ |
| toDebugString(buffer, getFlags()); |
| buffer.append("}"); //$NON-NLS-1$ |
| } |
| |
| protected boolean toDebugString(StringBuffer buffer, int flags) { |
| boolean prev = false; |
| if ((flags & IJavaElementDelta.F_MODIFIERS) != 0) { |
| if (prev) |
| buffer.append(" | "); //$NON-NLS-1$ |
| buffer.append("MODIFIERS CHANGED"); //$NON-NLS-1$ |
| prev = true; |
| } |
| if ((flags & IJavaElementDelta.F_SUPER_TYPES) != 0) { |
| if (prev) |
| buffer.append(" | "); //$NON-NLS-1$ |
| buffer.append("SUPER TYPES CHANGED"); //$NON-NLS-1$ |
| prev = true; |
| } |
| return prev; |
| } |
| |
| public String toString() { |
| StringBuffer buffer = new StringBuffer(); |
| toDebugString(buffer); |
| return buffer.toString(); |
| } |
| } |