| /******************************************************************************* |
| * Copyright (c) 2005, 2015 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.core.tests.internal.resources; |
| |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.core.runtime.preferences.IEclipsePreferences; |
| import org.eclipse.core.runtime.preferences.PreferenceModifyListener; |
| |
| public class ProjectPreferenceModifyListener extends PreferenceModifyListener { |
| /* |
| * Return the segment from the given path or null. |
| * "segment" parameter is 0-based. |
| */ |
| private static String getSegment(String path, int segment) { |
| int start = path.indexOf(IPath.SEPARATOR) == 0 ? 1 : 0; |
| int end = path.indexOf(IPath.SEPARATOR, start); |
| if (end == path.length() - 1) { |
| end = -1; |
| } |
| for (int i = 0; i < segment; i++) { |
| if (end == -1) { |
| return null; |
| } |
| start = end + 1; |
| end = path.indexOf(IPath.SEPARATOR, start); |
| } |
| if (end == -1) { |
| end = path.length(); |
| } |
| return path.substring(start, end); |
| } |
| |
| private static boolean equalsQualifier(IEclipsePreferences node, String qualifier) { |
| return qualifier.equals(getSegment(node.absolutePath(), 2)); |
| } |
| |
| @Override |
| public IEclipsePreferences preApply(IEclipsePreferences node) { |
| if (equalsQualifier(node, "test.load.is.import")) { |
| return testLoadIsImport(node); |
| } |
| return super.preApply(node); |
| } |
| |
| private IEclipsePreferences testLoadIsImport(IEclipsePreferences node) { |
| node.put("key", "new value"); |
| return node; |
| } |
| |
| } |