java/java-impl/src/com/intellij/ide/hierarchy/call/JavaCallHierarchyProvider.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 package com.intellij.ide.hierarchy.call;
  17
  18 import com.intellij.ide.hierarchy.HierarchyProvider;
  19 import com.intellij.ide.hierarchy.HierarchyBrowser;
  20 import com.intellij.ide.hierarchy.CallHierarchyBrowserBase;
  21 import com.intellij.psi.PsiElement;
  22 import com.intellij.psi.PsiMethod;
  23 import com.intellij.psi.util.PsiTreeUtil;
  24 import com.intellij.openapi.actionSystem.DataContext;
  25 import com.intellij.openapi.actionSystem.PlatformDataKeys;
  26 import com.intellij.openapi.actionSystem.LangDataKeys;
  27 import com.intellij.openapi.project.Project;
  28
  29 /**
  30  * @author yole
  31  */
  32 public class JavaCallHierarchyProvider implements HierarchyProvider {
  33   public PsiElement getTarget(final DataContext dataContext) {
  34     final Project project = PlatformDataKeys.PROJECT.getData(dataContext);
  35     if (project == null) return null;
  36
  37     final PsiElement element = LangDataKeys.PSI_ELEMENT.getData(dataContext);
  38     return PsiTreeUtil.getParentOfType(element, PsiMethod.class, false);
  39   }
  40
  41   public HierarchyBrowser createHierarchyBrowser(final PsiElement target) {
  42     return new CallHierarchyBrowser(target.getProject(), (PsiMethod) target);
  43   }
  44
  45   public void browserActivated(final HierarchyBrowser hierarchyBrowser) {
  46     ((CallHierarchyBrowser) hierarchyBrowser).changeView(CallHierarchyBrowserBase.CALLER_TYPE);
  47   }
  48 }