java/java-impl/src/com/intellij/ide/highlighter/JavaClsStructureViewBuilderProvider.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 /*
  18  * @author max
  19  */
  20 package com.intellij.ide.highlighter;
  21
  22 import com.intellij.ide.structureView.StructureViewBuilder;
  23 import com.intellij.ide.structureView.StructureViewBuilderProvider;
  24 import com.intellij.ide.structureView.StructureViewModel;
  25 import com.intellij.ide.structureView.TreeBasedStructureViewBuilder;
  26 import com.intellij.ide.structureView.impl.java.JavaFileTreeModel;
  27 import com.intellij.lang.Language;
  28 import com.intellij.lang.LanguageStructureViewBuilder;
  29 import com.intellij.lang.PsiStructureViewFactory;
  30 import com.intellij.openapi.extensions.Extensions;
  31 import com.intellij.openapi.fileTypes.ContentBasedClassFileProcessor;
  32 import com.intellij.openapi.fileTypes.FileType;
  33 import com.intellij.openapi.project.Project;
  34 import com.intellij.openapi.vfs.VirtualFile;
  35 import com.intellij.psi.PsiJavaFile;
  36 import com.intellij.psi.PsiManager;
  37 import com.intellij.psi.PsiFile;
  38 import org.jetbrains.annotations.NotNull;
  39 import org.jetbrains.annotations.Nullable;
  40
  41 public class JavaClsStructureViewBuilderProvider implements StructureViewBuilderProvider {
  42   @Nullable
  43   public StructureViewBuilder getStructureViewBuilder(@NotNull final FileType fileType, @NotNull final VirtualFile file, @NotNull final Project project) {
  44
  45     final PsiFile psiFile = PsiManager.getInstance(project).findFile(file);
  46
  47     final ContentBasedClassFileProcessor[] processors = Extensions.getExtensions(ContentBasedClassFileProcessor.EP_NAME);
  48     for (ContentBasedClassFileProcessor processor : processors) {
  49       if (processor.isApplicable(project, file)) {
  50         final Language language = processor.obtainLanguageForFile(file);
  51         if (language != null) {
  52           final PsiStructureViewFactory factory = LanguageStructureViewBuilder.INSTANCE.forLanguage(language);
  53           if (factory != null) return factory.getStructureViewBuilder(psiFile);
  54         }
  55       }
  56     }
  57
  58     final PsiJavaFile javaFile = (PsiJavaFile)psiFile;
  59     if (javaFile == null) return null;
  60     return new TreeBasedStructureViewBuilder() {
  61       @NotNull
  62       public StructureViewModel createStructureViewModel() {
  63         return new JavaFileTreeModel(javaFile);
  64       }
  65     };
  66   }
  67 }