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309 lines
14 KiB
Java
309 lines
14 KiB
Java
/*
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* Copyright 2000-2010 JetBrains s.r.o.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.intellij.codeInspection.actions;
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import com.intellij.codeInsight.ChangeContextUtil;
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import com.intellij.codeInsight.CodeInsightUtilBase;
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import com.intellij.codeInsight.TargetElementUtilBase;
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import com.intellij.codeInsight.intention.PsiElementBaseIntentionAction;
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import com.intellij.codeInsight.intention.impl.BaseIntentionAction;
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import com.intellij.openapi.application.ApplicationManager;
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import com.intellij.openapi.application.Result;
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import com.intellij.openapi.command.WriteCommandAction;
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import com.intellij.openapi.diagnostic.Logger;
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import com.intellij.openapi.editor.Editor;
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import com.intellij.openapi.progress.ProgressManager;
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import com.intellij.openapi.project.Project;
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import com.intellij.psi.*;
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import com.intellij.psi.codeStyle.JavaCodeStyleManager;
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import com.intellij.psi.impl.source.javadoc.PsiDocMethodOrFieldRef;
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import com.intellij.psi.impl.source.tree.java.PsiReferenceExpressionImpl;
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import com.intellij.psi.search.GlobalSearchScope;
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import com.intellij.psi.search.searches.DirectClassInheritorsSearch;
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import com.intellij.psi.search.searches.ReferencesSearch;
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import com.intellij.psi.util.InheritanceUtil;
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import com.intellij.psi.util.PsiTreeUtil;
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import com.intellij.util.IncorrectOperationException;
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import org.jetbrains.annotations.NonNls;
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import org.jetbrains.annotations.NotNull;
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import java.util.*;
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public class ReplaceImplementsWithStaticImportAction extends BaseIntentionAction {
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private static final Logger LOG = Logger.getInstance(ReplaceImplementsWithStaticImportAction.class);
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@NonNls private static final String FIND_CONSTANT_FIELD_USAGES = "Find constant field usages...";
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@NotNull
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public String getText() {
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return "Replace Implements with Static Import";
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}
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@NotNull
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public String getFamilyName() {
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return getText();
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}
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@Override
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public boolean isAvailable(@NotNull Project project, Editor editor, PsiFile file) {
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if (!(file instanceof PsiJavaFile)) return false;
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final PsiElement element = file.findElementAt(editor.getCaretModel().getOffset());
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if (element instanceof PsiIdentifier) {
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final PsiElement parent = element.getParent();
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if (parent instanceof PsiClass) {
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return isEmptyClass(project, (PsiClass)parent) && DirectClassInheritorsSearch.search((PsiClass)parent).findFirst() != null;
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}
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}
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final PsiReference psiReference = TargetElementUtilBase.findReference(editor);
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if (psiReference == null) return false;
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final PsiReferenceList referenceList = PsiTreeUtil.getParentOfType(psiReference.getElement(), PsiReferenceList.class);
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if (referenceList == null) return false;
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final PsiClass psiClass = PsiTreeUtil.getParentOfType(referenceList, PsiClass.class);
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if (psiClass == null) return false;
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if (psiClass.getExtendsList() != referenceList && psiClass.getImplementsList() != referenceList) return false;
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final PsiElement target = psiReference.resolve();
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if (target == null || !(target instanceof PsiClass)) return false;
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return isEmptyClass(project, (PsiClass)target);
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}
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private static boolean isEmptyClass(Project project, PsiClass targetClass) {
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if (!targetClass.isInterface()) {
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return false;
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}
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final PsiReferenceList extendsList = targetClass.getExtendsList();
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if (extendsList != null && extendsList.getReferencedTypes().length > 0) {
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final List<PsiMethod> methods = new ArrayList<PsiMethod>(Arrays.asList(targetClass.getAllMethods()));
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final PsiClass objectClass =
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JavaPsiFacade.getInstance(project).findClass(CommonClassNames.JAVA_LANG_OBJECT, GlobalSearchScope.allScope(project));
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if (objectClass == null) return false;
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methods.removeAll(Arrays.asList(objectClass.getMethods()));
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if (methods.size() > 0) return false;
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}
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else if (targetClass.getMethods().length > 0) {
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return false;
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}
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return targetClass.getAllFields().length > 0;
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}
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@Override
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public void invoke(@NotNull final Project project, final Editor editor, final PsiFile file) throws IncorrectOperationException {
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if (!CodeInsightUtilBase.preparePsiElementForWrite(file)) return;
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final int offset = editor.getCaretModel().getOffset();
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final PsiReference psiReference = file.findReferenceAt(offset);
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if (psiReference != null) {
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final PsiElement element = psiReference.getElement();
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final PsiClass psiClass = PsiTreeUtil.getParentOfType(element, PsiClass.class);
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LOG.assertTrue(psiClass != null);
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final PsiElement target = psiReference.resolve();
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LOG.assertTrue(target instanceof PsiClass);
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final PsiClass targetClass = (PsiClass)target;
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new WriteCommandAction(project, getText()) {
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protected void run(Result result) throws Throwable {
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for (PsiField constField : targetClass.getAllFields()) {
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final String fieldName = constField.getName();
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final PsiClass containingClass = constField.getContainingClass();
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for (PsiReference ref : ReferencesSearch.search(constField)) {
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final PsiElement psiElement = ref.getElement();
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if (ref instanceof PsiReferenceExpression) {
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final PsiElement qualifier = ((PsiReferenceExpression)ref).getQualifier();
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if (qualifier != null) {
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if (qualifier instanceof PsiReferenceExpression) {
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final PsiElement resolved = ((PsiReferenceExpression)qualifier).resolve();
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if (resolved instanceof PsiClass && !InheritanceUtil.isInheritorOrSelf(psiClass, (PsiClass)resolved, true)) {
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continue;
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}
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}
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qualifier.putCopyableUserData(ChangeContextUtil.CAN_REMOVE_QUALIFIER_KEY,
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ChangeContextUtil.canRemoveQualifier((PsiReferenceExpression)ref));
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}
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}
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bindReference(psiElement.getContainingFile(), constField, containingClass, fieldName, ref, project);
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}
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}
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element.delete();
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JavaCodeStyleManager.getInstance(project).optimizeImports(file);
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}
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}.execute();
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}
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else {
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final PsiElement identifier = file.findElementAt(offset);
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LOG.assertTrue(identifier instanceof PsiIdentifier);
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final PsiElement element = identifier.getParent();
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LOG.assertTrue(element instanceof PsiClass);
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final PsiClass targetClass = (PsiClass)element;
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final Map<PsiFile, Map<PsiField, Set<PsiReference>>> refs = new HashMap<PsiFile, Map<PsiField, Set<PsiReference>>>();
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if (!ProgressManager.getInstance().runProcessWithProgressSynchronously(new Runnable() {
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public void run() {
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for (PsiField field : targetClass.getAllFields()) {
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final PsiClass containingClass = field.getContainingClass();
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for (PsiReference reference : ReferencesSearch.search(field)) {
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if (reference == null) {
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continue;
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}
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final PsiElement refElement = reference.getElement();
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if (encodeQualifier(containingClass, reference, targetClass)) continue;
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final PsiFile psiFile = refElement.getContainingFile();
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if (psiFile instanceof PsiJavaFile) {
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Map<PsiField, Set<PsiReference>> references = refs.get(psiFile);
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if (references == null) {
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references = new HashMap<PsiField, Set<PsiReference>>();
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refs.put(psiFile, references);
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}
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Set<PsiReference> fieldsRefs = references.get(field);
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if (fieldsRefs == null) {
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fieldsRefs = new HashSet<PsiReference>();
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references.put(field, fieldsRefs);
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}
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fieldsRefs.add(reference);
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}
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}
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}
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}
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}, FIND_CONSTANT_FIELD_USAGES, true, project)) {
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return;
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}
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final Set<PsiJavaCodeReferenceElement> refs2Unimplement = new HashSet<PsiJavaCodeReferenceElement>();
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if (!ProgressManager.getInstance().runProcessWithProgressSynchronously(new Runnable() {
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public void run() {
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for (PsiClass psiClass : DirectClassInheritorsSearch.search(targetClass)) {
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PsiFile containingFile = psiClass.getContainingFile();
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if (!refs.containsKey(containingFile)) {
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refs.put(containingFile, new HashMap<PsiField, Set<PsiReference>>());
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}
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if (collectExtendsImplements(targetClass, psiClass.getExtendsList(), refs2Unimplement)) continue;
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collectExtendsImplements(targetClass, psiClass.getImplementsList(), refs2Unimplement);
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}
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}
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}, "Find references in implement/extends lists...", true, project)) {
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return;
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}
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ApplicationManager.getApplication().runWriteAction(new Runnable() {
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public void run() {
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for (PsiFile psiFile : refs.keySet()) {
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final Map<PsiField, Set<PsiReference>> map = refs.get(psiFile);
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for (PsiField psiField : map.keySet()) {
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final PsiClass containingClass = psiField.getContainingClass();
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final String fieldName = psiField.getName();
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for (PsiReference reference : map.get(psiField)) {
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bindReference(psiFile, psiField, containingClass, fieldName, reference, project);
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}
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}
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}
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for (PsiJavaCodeReferenceElement referenceElement : refs2Unimplement) {
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referenceElement.delete();
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}
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}
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});
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final Set<SmartPsiElementPointer<PsiImportStatementBase>> redundant = new HashSet<SmartPsiElementPointer<PsiImportStatementBase>>();
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final JavaCodeStyleManager codeStyleManager = JavaCodeStyleManager.getInstance(project);
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final SmartPointerManager pointerManager = SmartPointerManager.getInstance(project);
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if (!ProgressManager.getInstance().runProcessWithProgressSynchronously(new Runnable(){
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public void run() {
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for (PsiFile psiFile : refs.keySet()) {
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final Collection<PsiImportStatementBase> red = codeStyleManager.findRedundantImports((PsiJavaFile)psiFile);
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if (red != null) {
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for (PsiImportStatementBase statementBase : red) {
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redundant.add(pointerManager.createSmartPsiElementPointer(statementBase));
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}
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}
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}
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}
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}, "Collect redundant imports...", true, project)) return;
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ApplicationManager.getApplication().runWriteAction(new Runnable() {
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public void run() {
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for (SmartPsiElementPointer<PsiImportStatementBase> pointer : redundant) {
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final PsiImportStatementBase statementBase = pointer.getElement();
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if (statementBase != null) statementBase.delete();
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}
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}
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});
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}
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}
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private static boolean encodeQualifier(PsiClass containingClass, PsiReference reference, PsiClass targetClass) {
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if (reference instanceof PsiReferenceExpression) {
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final PsiElement qualifier = ((PsiReferenceExpression)reference).getQualifier();
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if (qualifier != null) {
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if (qualifier instanceof PsiReferenceExpression) {
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final PsiElement resolved = ((PsiReferenceExpression)qualifier).resolve();
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if (resolved == containingClass || resolved instanceof PsiClass && InheritanceUtil.isInheritorOrSelf(targetClass, (PsiClass)resolved, true)) {
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return true;
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}
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}
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qualifier.putCopyableUserData(ChangeContextUtil.CAN_REMOVE_QUALIFIER_KEY,
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ChangeContextUtil.canRemoveQualifier((PsiReferenceExpression)reference));
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}
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}
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return false;
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}
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private static void bindReference(PsiFile psiFile,
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PsiField psiField,
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PsiClass containingClass,
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String fieldName,
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PsiReference reference,
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Project project) {
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if (reference instanceof PsiReferenceExpression) {
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PsiReferenceExpressionImpl.bindToElementViaStaticImport(containingClass, fieldName, ((PsiJavaFile)psiFile).getImportList());
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final PsiElement qualifier = ((PsiReferenceExpression)reference).getQualifier();
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if (qualifier != null) {
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final Boolean canRemoveQualifier = qualifier.getCopyableUserData(ChangeContextUtil.CAN_REMOVE_QUALIFIER_KEY);
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if (canRemoveQualifier != null && canRemoveQualifier.booleanValue()) {
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qualifier.delete();
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} else {
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final PsiJavaCodeReferenceElement classReferenceElement =
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JavaPsiFacade.getElementFactory(project).createReferenceExpression(containingClass);
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qualifier.replace(classReferenceElement);
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}
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}
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} else if (reference.getElement() instanceof PsiDocMethodOrFieldRef){
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reference.bindToElement(psiField); //todo refs through inheritors
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}
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}
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private static boolean collectExtendsImplements(final PsiClass targetClass,
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final PsiReferenceList referenceList,
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final Set<PsiJavaCodeReferenceElement> refs) {
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if (referenceList != null) {
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for (PsiJavaCodeReferenceElement referenceElement : referenceList.getReferenceElements()) {
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if (referenceElement.resolve() == targetClass) {
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refs.add(referenceElement);
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return true;
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}
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}
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}
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return false;
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}
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public boolean startInWriteAction() {
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return false;
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}
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}
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