| /* |
| * Copyright 2000-2014 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 com.intellij.refactoring.inline; |
| |
| import com.intellij.codeInsight.TargetElementUtilBase; |
| import com.intellij.lang.StdLanguages; |
| import com.intellij.openapi.application.ApplicationManager; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.progress.ProgressManager; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.util.Ref; |
| import com.intellij.psi.*; |
| import com.intellij.psi.search.ProjectScope; |
| import com.intellij.psi.search.searches.ReferencesSearch; |
| import com.intellij.psi.util.PsiUtil; |
| import com.intellij.refactoring.HelpID; |
| import com.intellij.refactoring.RefactoringBundle; |
| import com.intellij.refactoring.util.CommonRefactoringUtil; |
| |
| /** |
| * @author ven |
| */ |
| public class InlineConstantFieldHandler extends JavaInlineActionHandler { |
| private static final String REFACTORING_NAME = RefactoringBundle.message("inline.field.title"); |
| |
| @Override |
| public boolean canInlineElement(PsiElement element) { |
| return element instanceof PsiField && StdLanguages.JAVA.equals(element.getLanguage()); |
| } |
| |
| @Override |
| public void inlineElement(Project project, Editor editor, PsiElement element) { |
| final PsiElement navigationElement = element.getNavigationElement(); |
| final PsiField field = (PsiField)(navigationElement instanceof PsiField ? navigationElement : element); |
| |
| if (!field.hasInitializer()) { |
| String message = RefactoringBundle.message("no.initializer.present.for.the.field"); |
| CommonRefactoringUtil.showErrorHint(project, editor, message, REFACTORING_NAME, HelpID.INLINE_FIELD); |
| return; |
| } |
| |
| if (field instanceof PsiEnumConstant) { |
| String message = REFACTORING_NAME + " is not supported for enum constants"; |
| CommonRefactoringUtil.showErrorHint(project, editor, message, REFACTORING_NAME, HelpID.INLINE_FIELD); |
| return; |
| } |
| |
| if (ReferencesSearch.search(field, ProjectScope.getProjectScope(project), false).findFirst() == null) { |
| String message = RefactoringBundle.message("field.0.is.never.used", field.getName()); |
| CommonRefactoringUtil.showErrorHint(project, editor, message, REFACTORING_NAME, HelpID.INLINE_FIELD); |
| return; |
| } |
| |
| if (!field.hasModifierProperty(PsiModifier.FINAL)) { |
| final Ref<Boolean> hasWriteUsages = new Ref<Boolean>(false); |
| if (!ProgressManager.getInstance().runProcessWithProgressSynchronously(new Runnable() { |
| @Override |
| public void run() { |
| ApplicationManager.getApplication().runReadAction(new Runnable() { |
| @Override |
| public void run() { |
| for (PsiReference reference : ReferencesSearch.search(field)) { |
| final PsiElement referenceElement = reference.getElement(); |
| if (!(referenceElement instanceof PsiExpression && PsiUtil.isAccessedForReading((PsiExpression)referenceElement))) { |
| hasWriteUsages.set(true); |
| break; |
| } |
| } |
| } |
| }); |
| } |
| }, "Check if inline is possible...", true, project)) { |
| return; |
| } |
| if (hasWriteUsages.get()) { |
| String message = RefactoringBundle.message("0.refactoring.is.supported.only.for.final.fields", REFACTORING_NAME); |
| CommonRefactoringUtil.showErrorHint(project, editor, message, REFACTORING_NAME, HelpID.INLINE_FIELD); |
| return; |
| } |
| } |
| |
| PsiReference reference = editor != null ? TargetElementUtilBase.findReference(editor, editor.getCaretModel().getOffset()) : null; |
| if (reference != null) { |
| final PsiElement resolve = reference.resolve(); |
| if (resolve != null && !field.equals(resolve.getNavigationElement())) { |
| reference = null; |
| } |
| } |
| |
| if ((!(element instanceof PsiCompiledElement) || reference == null) && !CommonRefactoringUtil.checkReadOnlyStatus(project, field)) return; |
| PsiReferenceExpression refExpression = reference instanceof PsiReferenceExpression ? (PsiReferenceExpression)reference : null; |
| InlineFieldDialog dialog = new InlineFieldDialog(project, field, refExpression); |
| dialog.show(); |
| } |
| } |