java/idea-ui/src/com/intellij/openapi/roots/ui/configuration/LanguageLevelConfigurable.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package com.intellij.openapi.roots.ui.configuration;
  18
  19 import com.intellij.openapi.options.ConfigurationException;
  20 import com.intellij.openapi.options.UnnamedConfigurable;
  21 import com.intellij.openapi.project.ProjectBundle;
  22 import com.intellij.openapi.roots.LanguageLevelModuleExtension;
  23 import com.intellij.openapi.roots.ModifiableRootModel;
  24 import com.intellij.pom.java.LanguageLevel;
  25
  26 import javax.swing.*;
  27 import java.awt.*;
  28 import java.awt.event.ActionEvent;
  29 import java.awt.event.ActionListener;
  30
  31 /**
  32  * User: anna
  33  * Date: 06-Jun-2006
  34  */
  35 public class LanguageLevelConfigurable implements UnnamedConfigurable {
  36   private LanguageLevelCombo myLanguageLevelCombo;
  37   private JPanel myPanel = new JPanel(new GridBagLayout());
  38   public LanguageLevelModuleExtension myLanguageLevelExtension;
  39
  40   public LanguageLevelConfigurable(ModifiableRootModel rootModule) {
  41     myLanguageLevelExtension = rootModule.getModuleExtension(LanguageLevelModuleExtension.class);
  42     myLanguageLevelCombo = new LanguageLevelCombo();
  43     myLanguageLevelCombo.addActionListener(new ActionListener() {
  44       public void actionPerformed(final ActionEvent e) {
  45         final Object languageLevel = myLanguageLevelCombo.getSelectedItem();
  46         myLanguageLevelExtension.setLanguageLevel(languageLevel instanceof LanguageLevel ? (LanguageLevel)languageLevel : null);
  47       }
  48     });
  49     myLanguageLevelCombo.insertItemAt(LanguageLevelCombo.USE_PROJECT_LANGUAGE_LEVEL, 0);
  50     myPanel.add(new JLabel(ProjectBundle.message("module.module.language.level")), new GridBagConstraints(0, 0, 1, 1, 0, 0, GridBagConstraints.NORTHWEST, GridBagConstraints.NONE, new Insets(8, 6, 6, 0), 0, 0));
  51     myPanel.add(myLanguageLevelCombo, new GridBagConstraints(1, 0, 1, 1, 1.0, 0, GridBagConstraints.NORTHWEST, GridBagConstraints.NONE, new Insets(6, 6, 6, 0), 0, 0));
  52   }
  53
  54   public JComponent createComponent() {
  55     return myPanel;
  56   }
  57
  58   public boolean isModified() {
  59     return myLanguageLevelExtension.isChanged();
  60   }
  61
  62   public void apply() throws ConfigurationException {
  63     myLanguageLevelExtension.commit();
  64   }
  65
  66   public void reset() {
  67     myLanguageLevelCombo.setSelectedItem(myLanguageLevelExtension.getLanguageLevel());
  68   }
  69
  70   public void disposeUIResources() {
  71     myPanel = null;
  72     myLanguageLevelCombo = null;
  73     myLanguageLevelExtension = null;
  74   }
  75 }