| /******************************************************************************* |
| * Copyright (c) 2000, 2018 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.core.manipulation; |
| |
| import org.eclipse.core.runtime.preferences.DefaultScope; |
| import org.eclipse.core.runtime.preferences.InstanceScope; |
| |
| import org.eclipse.core.resources.ProjectScope; |
| |
| import org.eclipse.jdt.core.IJavaProject; |
| |
| /** |
| * Central access point for the Java Manipulation plug-in (id <code>"org.eclipse.jdt.core.manipulation"</code>). |
| */ |
| public class JavaManipulation { |
| |
| /** |
| * The id of the Java Manipulation plug-in (value <code>"org.eclipse.jdt.core.manipulation"</code>). |
| */ |
| public static final String ID_PLUGIN= "org.eclipse.jdt.core.manipulation"; //$NON-NLS-1$ |
| |
| /** |
| * Some operations can be performed without UI, but their preferences are stored |
| * in the JDT UI preference node. If JDT UI is not present in runtime, there are |
| * sane defaults, but if it exists, the preference node should be checked. |
| */ |
| private static String fgPreferenceNodeId; |
| |
| /** |
| * @return The id of the preference node for some basic Java preferences. |
| * Generally this will be <code>"org.eclipse.jdt.ui"</code> but some |
| * environments may not have the 'org.eclipse.jdt.ui' bundle, so a |
| * different one can be set. |
| * @since 1.10 |
| */ |
| public static final String getPreferenceNodeId () { |
| return fgPreferenceNodeId; |
| } |
| |
| /** |
| * Sets the preference node to be used for basic Java preferences. |
| * The client should set the value back to null when finished. |
| * |
| * @param id the Id to use for the preference node |
| * @return true if the value was set, and false otherwise. |
| * @since 1.10 |
| */ |
| public static final boolean setPreferenceNodeId (String id) { |
| if (fgPreferenceNodeId == null || id == null) { |
| fgPreferenceNodeId= id; |
| return true; |
| } |
| |
| return false; |
| } |
| |
| /** |
| * Returns the value for the given key in the given context for the JDT UI plug-in. |
| * @param key The preference key |
| * @param project The current context or <code>null</code> if no context is available and the |
| * workspace setting should be taken. Note that passing <code>null</code> should |
| * be avoided. |
| * @return Returns the current value for the string. |
| * @since 1.10 |
| */ |
| public static String getPreference(String key, IJavaProject project) { |
| String val; |
| if (project != null) { |
| val= new ProjectScope(project.getProject()).getNode(JavaManipulation.fgPreferenceNodeId).get(key, null); |
| if (val != null) { |
| return val; |
| } |
| } |
| val= InstanceScope.INSTANCE.getNode(JavaManipulation.fgPreferenceNodeId).get(key, null); |
| if (val != null) { |
| return val; |
| } |
| return DefaultScope.INSTANCE.getNode(JavaManipulation.fgPreferenceNodeId).get(key, null); |
| } |
| } |