| /* |
| * Copyright 2000-2009 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* |
| * User: anna |
| * Date: 27-Dec-2007 |
| */ |
| package com.intellij.openapi.roots; |
| |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.module.Module; |
| import com.intellij.openapi.util.InvalidDataException; |
| import com.intellij.openapi.util.WriteExternalException; |
| import com.intellij.pom.java.LanguageLevel; |
| import org.jdom.Element; |
| import org.jetbrains.annotations.NonNls; |
| import org.jetbrains.annotations.Nullable; |
| |
| public class LanguageLevelModuleExtension extends ModuleExtension<LanguageLevelModuleExtension> { |
| @NonNls private static final String LANGUAGE_LEVEL_ELEMENT_NAME = "LANGUAGE_LEVEL"; |
| private Module myModule; |
| private final boolean myWritable; |
| private static final Logger LOG = Logger.getInstance("#" + LanguageLevelModuleExtension.class.getName()); |
| |
| public static LanguageLevelModuleExtension getInstance(final Module module) { |
| return ModuleRootManager.getInstance(module).getModuleExtension(LanguageLevelModuleExtension.class); |
| } |
| |
| private LanguageLevel myLanguageLevel; |
| private final LanguageLevelModuleExtension mySource; |
| |
| public LanguageLevelModuleExtension(Module module) { |
| myModule = module; |
| mySource = null; |
| myWritable = false; |
| } |
| |
| public LanguageLevelModuleExtension(final LanguageLevelModuleExtension source, boolean writable) { |
| myWritable = writable; |
| myModule = source.myModule; |
| myLanguageLevel = source.myLanguageLevel; |
| mySource = source; |
| } |
| |
| public void setLanguageLevel(final LanguageLevel languageLevel) { |
| LOG.assertTrue(myWritable, "Writable model can be retrieved from writable ModifiableRootModel"); |
| myLanguageLevel = languageLevel; |
| } |
| |
| @Nullable |
| public LanguageLevel getLanguageLevel() { |
| return myLanguageLevel; |
| } |
| |
| @Override |
| public void readExternal(final Element element) throws InvalidDataException { |
| final String languageLevel = element.getAttributeValue(LANGUAGE_LEVEL_ELEMENT_NAME); |
| if (languageLevel != null) { |
| try { |
| myLanguageLevel = LanguageLevel.valueOf(languageLevel); |
| } |
| catch (IllegalArgumentException e) { |
| //bad value was stored |
| } |
| } |
| else { |
| myLanguageLevel = null; |
| } |
| } |
| |
| @Override |
| public void writeExternal(final Element element) throws WriteExternalException { |
| if (myLanguageLevel != null) { |
| element.setAttribute(LANGUAGE_LEVEL_ELEMENT_NAME, myLanguageLevel.toString()); |
| } |
| } |
| |
| @Override |
| public ModuleExtension getModifiableModel(final boolean writable) { |
| return new LanguageLevelModuleExtension(this, writable); |
| } |
| |
| @Override |
| public void commit() { |
| if (mySource != null && mySource.myLanguageLevel != myLanguageLevel) { |
| mySource.myLanguageLevel = myLanguageLevel; |
| LanguageLevelProjectExtension.getInstance(myModule.getProject()).languageLevelsChanged(); |
| } |
| } |
| |
| @Override |
| public boolean isChanged() { |
| return mySource != null && mySource.myLanguageLevel != myLanguageLevel; |
| } |
| |
| @Override |
| public void dispose() { |
| myModule = null; |
| myLanguageLevel = null; |
| } |
| } |