/*
* Copyright 2010-2015 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.
*/
package org.jetbrains.kotlin.idea.hierarchy.calls;
import com.intellij.codeInsight.TargetElementUtilBase;
import com.intellij.ide.hierarchy.CallHierarchyBrowserBase;
import com.intellij.ide.hierarchy.HierarchyBrowser;
import com.intellij.ide.hierarchy.HierarchyProvider;
import com.intellij.openapi.actionSystem.CommonDataKeys;
import com.intellij.openapi.actionSystem.DataContext;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.project.Project;
import com.intellij.psi.PsiDocumentManager;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.kotlin.idea.KotlinLanguage;
import org.jetbrains.kotlin.idea.hierarchy.HierarchyUtilsKt;
import org.jetbrains.kotlin.idea.util.ProjectRootsUtil;
import org.jetbrains.kotlin.psi.KtFile;
public class KotlinCallHierarchyProvider implements HierarchyProvider {
@Override
public PsiElement getTarget(@NotNull DataContext dataContext) {
Project project = CommonDataKeys.PROJECT.getData(dataContext);
if (project == null) return null;
PsiElement element = getCurrentElement(dataContext, project);
if (element == null) return null;
element = HierarchyUtilsKt.getCallHierarchyElement(element);
if (element instanceof KtFile || element == null || element.getLanguage() != KotlinLanguage.INSTANCE) return null;
return element;
}
private static PsiElement getCurrentElement(DataContext dataContext, Project project) {
Editor editor = CommonDataKeys.EDITOR.getData(dataContext);
if (editor != null) {
PsiFile file = PsiDocumentManager.getInstance(project).getPsiFile(editor.getDocument());
if (file == null) return null;
if (!ProjectRootsUtil.isInProjectOrLibSource(file)) return null;
return TargetElementUtilBase.findTargetElement(editor, TargetElementUtilBase.getInstance().getAllAccepted());
}
return CommonDataKeys.PSI_ELEMENT.getData(dataContext);
}
@NotNull
@Override
public HierarchyBrowser createHierarchyBrowser(PsiElement target) {
return new KotlinCallHierarchyBrowser(target.getProject(), target);
}
@Override
public void browserActivated(@NotNull HierarchyBrowser hierarchyBrowser) {
((KotlinCallHierarchyBrowser) hierarchyBrowser).changeView(CallHierarchyBrowserBase.CALLER_TYPE);
}
}