public Collection<PsiElement> getAdditionalElementsToDelete(
@NotNull final PsiElement element,
@NotNull final Collection<PsiElement> allElementsToDelete,
final boolean askUser) {
if (element instanceof PsiField) {
PsiField field = (PsiField) element;
final Project project = element.getProject();
String propertyName =
JavaCodeStyleManager.getInstance(project)
.variableNameToPropertyName(field.getName(), VariableKind.FIELD);
PsiClass aClass = field.getContainingClass();
if (aClass != null) {
boolean isStatic = field.hasModifierProperty(PsiModifier.STATIC);
PsiMethod[] getters =
GetterSetterPrototypeProvider.findGetters(aClass, propertyName, isStatic);
if (getters != null) {
final List<PsiMethod> validGetters = new ArrayList<>(1);
for (PsiMethod getter : getters) {
if (!allElementsToDelete.contains(getter) && (getter != null && getter.isPhysical())) {
validGetters.add(getter);
}
}
getters =
validGetters.isEmpty()
? null
: validGetters.toArray(new PsiMethod[validGetters.size()]);
}
PsiMethod setter = PropertyUtil.findPropertySetter(aClass, propertyName, isStatic, false);
if (allElementsToDelete.contains(setter) || setter != null && !setter.isPhysical())
setter = null;
if (askUser && (getters != null || setter != null)) {
final String message =
RefactoringMessageUtil.getGetterSetterMessage(
field.getName(),
RefactoringBundle.message("delete.title"),
getters != null ? getters[0] : null,
setter);
if (!ApplicationManager.getApplication().isUnitTestMode()
&& Messages.showYesNoDialog(
project,
message,
RefactoringBundle.message("safe.delete.title"),
Messages.getQuestionIcon())
!= Messages.YES) {
getters = null;
setter = null;
}
}
List<PsiElement> elements = new ArrayList<>();
if (setter != null) elements.add(setter);
if (getters != null) Collections.addAll(elements, getters);
return elements;
}
}
return null;
}
@Override
protected boolean preprocessUsages(@NotNull final Ref<UsageInfo[]> refUsages) {
final MultiMap<PsiElement, String> conflicts = new MultiMap<PsiElement, String>();
myExtractEnumProcessor.findEnumConstantConflicts(refUsages);
if (!DestinationFolderComboBox.isAccessible(
myProject,
sourceClass.getContainingFile().getVirtualFile(),
myClass.getContainingFile().getContainingDirectory().getVirtualFile())) {
conflicts.putValue(
sourceClass,
"Extracted class won't be accessible in "
+ RefactoringUIUtil.getDescription(sourceClass, true));
}
ApplicationManager.getApplication()
.runWriteAction(
new Runnable() {
public void run() {
myClass.delete();
}
});
final Project project = sourceClass.getProject();
final GlobalSearchScope scope = GlobalSearchScope.allScope(project);
final PsiClass existingClass =
JavaPsiFacade.getInstance(project).findClass(getQualifiedName(), scope);
if (existingClass != null) {
conflicts.putValue(
existingClass,
RefactorJBundle.message("cannot.perform.the.refactoring")
+ RefactorJBundle.message("there.already.exists.a.class.with.the.chosen.name"));
}
if (!myGenerateAccessors) {
calculateInitializersConflicts(conflicts);
final NecessaryAccessorsVisitor visitor = checkNecessaryGettersSetters4ExtractedClass();
final NecessaryAccessorsVisitor srcVisitor = checkNecessaryGettersSetters4SourceClass();
final Set<PsiField> fieldsNeedingGetter = new LinkedHashSet<PsiField>();
fieldsNeedingGetter.addAll(visitor.getFieldsNeedingGetter());
fieldsNeedingGetter.addAll(srcVisitor.getFieldsNeedingGetter());
for (PsiField field : fieldsNeedingGetter) {
conflicts.putValue(field, "Field \'" + field.getName() + "\' needs getter");
}
final Set<PsiField> fieldsNeedingSetter = new LinkedHashSet<PsiField>();
fieldsNeedingSetter.addAll(visitor.getFieldsNeedingSetter());
fieldsNeedingSetter.addAll(srcVisitor.getFieldsNeedingSetter());
for (PsiField field : fieldsNeedingSetter) {
conflicts.putValue(field, "Field \'" + field.getName() + "\' needs setter");
}
}
checkConflicts(refUsages, conflicts);
return showConflicts(conflicts, refUsages.get());
}
private static PsiField convertFieldToLanguage(PsiField field, Language language) {
if (field.getLanguage().equals(language)) {
return field;
}
return JVMElementFactories.getFactory(language, field.getProject())
.createField(field.getName(), field.getType());
}
private static PsiAnnotationMemberValue[] readFromClass(
@NonNls String attributeName, @NotNull PsiAnnotation magic, PsiType type) {
PsiAnnotationMemberValue fromClassAttr = magic.findAttributeValue(attributeName);
PsiType fromClassType =
fromClassAttr instanceof PsiClassObjectAccessExpression
? ((PsiClassObjectAccessExpression) fromClassAttr).getOperand().getType()
: null;
PsiClass fromClass =
fromClassType instanceof PsiClassType ? ((PsiClassType) fromClassType).resolve() : null;
if (fromClass == null) return null;
String fqn = fromClass.getQualifiedName();
if (fqn == null) return null;
List<PsiAnnotationMemberValue> constants = new ArrayList<PsiAnnotationMemberValue>();
for (PsiField field : fromClass.getFields()) {
if (!field.hasModifierProperty(PsiModifier.PUBLIC)
|| !field.hasModifierProperty(PsiModifier.STATIC)
|| !field.hasModifierProperty(PsiModifier.FINAL)) continue;
PsiType fieldType = field.getType();
if (!Comparing.equal(fieldType, type)) continue;
PsiAssignmentExpression e =
(PsiAssignmentExpression)
JavaPsiFacade.getElementFactory(field.getProject())
.createExpressionFromText("x=" + fqn + "." + field.getName(), field);
PsiReferenceExpression refToField = (PsiReferenceExpression) e.getRExpression();
constants.add(refToField);
}
if (constants.isEmpty()) return null;
return constants.toArray(new PsiAnnotationMemberValue[constants.size()]);
}
private boolean existsFieldWithName(String name) {
final PsiField[] allFields = sourceClass.getAllFields();
for (PsiField field : allFields) {
if (name.equals(field.getName()) && !fields.contains(field)) {
return true;
}
}
return false;
}
@NotNull
private Field fieldToField(@NotNull PsiField field, PsiClass psiClass) {
Set<String> modifiers = modifiersListToModifiersSet(field.getModifierList());
if (field instanceof PsiEnumConstant) // TODO: remove instanceof
{
return new EnumConstant(
new IdentifierImpl(field.getName()), // TODO
modifiers,
typeToType(field.getType()),
elementToElement(((PsiEnumConstant) field).getArgumentList()));
}
return new Field(
new IdentifierImpl(field.getName()), // TODO
modifiers,
typeToType(field.getType(), ConverterUtil.isAnnotatedAsNotNull(field.getModifierList())),
createSureCallOnlyForChain(field.getInitializer(), field.getType()), // TODO: add modifiers
countWritingAccesses(field, psiClass));
}
public static PsiMethod generateSetterPrototype(
PsiField field, final PsiClass containingClass, boolean returnSelf) {
Project project = field.getProject();
JavaCodeStyleManager codeStyleManager = JavaCodeStyleManager.getInstance(project);
PsiElementFactory factory = JavaPsiFacade.getInstance(field.getProject()).getElementFactory();
String name = field.getName();
boolean isStatic = field.hasModifierProperty(PsiModifier.STATIC);
VariableKind kind = codeStyleManager.getVariableKind(field);
String propertyName = codeStyleManager.variableNameToPropertyName(name, kind);
String setName = suggestSetterName(project, field);
try {
PsiMethod setMethod =
factory.createMethod(
setName, returnSelf ? factory.createType(containingClass) : PsiType.VOID);
String parameterName =
codeStyleManager.propertyNameToVariableName(propertyName, VariableKind.PARAMETER);
PsiParameter param = factory.createParameter(parameterName, field.getType());
annotateWithNullableStuff(field, factory, param);
setMethod.getParameterList().add(param);
PsiUtil.setModifierProperty(setMethod, PsiModifier.PUBLIC, true);
PsiUtil.setModifierProperty(setMethod, PsiModifier.STATIC, isStatic);
@NonNls StringBuffer buffer = new StringBuffer();
buffer.append("{\n");
if (name.equals(parameterName)) {
if (!isStatic) {
buffer.append("this.");
} else {
String className = containingClass.getName();
if (className != null) {
buffer.append(className);
buffer.append(".");
}
}
}
buffer.append(name);
buffer.append("=");
buffer.append(parameterName);
buffer.append(";\n");
if (returnSelf) {
buffer.append("return this;\n");
}
buffer.append("}");
PsiCodeBlock body = factory.createCodeBlockFromText(buffer.toString(), null);
setMethod.getBody().replace(body);
setMethod = (PsiMethod) CodeStyleManager.getInstance(project).reformat(setMethod);
return setMethod;
} catch (IncorrectOperationException e) {
LOG.error(e);
return null;
}
}
public static boolean isFieldEquivalentTo(@NotNull PsiField field, PsiElement another) {
if (!(another instanceof PsiField)) return false;
String name1 = field.getName();
if (name1 == null) return false;
if (!another.isValid()) return false;
String name2 = ((PsiField) another).getName();
if (!name1.equals(name2)) return false;
PsiClass aClass1 = field.getContainingClass();
PsiClass aClass2 = ((PsiField) another).getContainingClass();
return aClass1 != null
&& aClass2 != null
&& field.getManager().areElementsEquivalent(aClass1, aClass2);
}
@Nullable
public static PsiField findFieldByName(
GrTypeDefinition grType, String name, boolean checkBases, boolean includeSynthetic) {
if (!checkBases) {
for (PsiField field : CollectClassMembersUtil.getFields(grType, includeSynthetic)) {
if (name.equals(field.getName())) return field;
}
return null;
}
Map<String, CandidateInfo> fieldsMap =
CollectClassMembersUtil.getAllFields(grType, includeSynthetic);
final CandidateInfo info = fieldsMap.get(name);
return info == null ? null : (PsiField) info.getElement();
}
private static void addFieldsUsages(
final PsiClass aClass,
final Processor<UsageInfo> results,
final JavaClassFindUsagesOptions options) {
if (options.isIncludeInherited) {
final PsiManager manager = aClass.getManager();
PsiField[] fields = aClass.getAllFields();
FieldsLoop:
for (int i = 0; i < fields.length; i++) {
final PsiField field = fields[i];
// filter hidden fields
for (int j = 0; j < i; j++) {
if (Comparing.strEqual(field.getName(), fields[j].getName())) continue FieldsLoop;
}
final PsiClass fieldClass = field.getContainingClass();
if (manager.areElementsEquivalent(fieldClass, aClass)) {
addElementUsages(fields[i], results, options);
} else {
ReferencesSearch.search(
new ReferencesSearch.SearchParameters(
field, options.searchScope, false, options.fastTrack))
.forEach(
new ReadActionProcessor<PsiReference>() {
@Override
public boolean processInReadAction(final PsiReference reference) {
addResultFromReference(
reference, fieldClass, manager, aClass, results, options);
return true;
}
});
}
}
} else {
PsiField[] fields =
ApplicationManager.getApplication()
.runReadAction(
new Computable<PsiField[]>() {
@Override
public PsiField[] compute() {
return aClass.getFields();
}
});
for (PsiField field : fields) {
addElementUsages(field, results, options);
}
}
}
@NotNull
private Set<String> addAllRestrictedProperties() {
if (myRefExpr.getQualifier() != null) {
return Collections.emptySet();
}
Set<String> propertyNames = new HashSet<String>();
for (GrTypeDefinition containingClass =
PsiTreeUtil.getParentOfType(myRefExpr, GrTypeDefinition.class);
containingClass != null;
containingClass = PsiTreeUtil.getParentOfType(containingClass, GrTypeDefinition.class)) {
for (PsiField field : containingClass.getFields()) {
propertyNames.add(field.getName());
}
}
return propertyNames;
}
private static void addParameters(
@NotNull PsiClass psiClass,
GrLightMethodBuilder fieldsConstructor,
boolean includeProperties,
boolean includeFields,
boolean optional,
Set<String> excludes) {
PsiMethod[] methods = CollectClassMembersUtil.getMethods(psiClass, false);
if (includeProperties) {
for (PsiMethod method : methods) {
if (!method.hasModifierProperty(PsiModifier.STATIC)
&& PropertyUtil.isSimplePropertySetter(method)) {
final String name = PropertyUtil.getPropertyNameBySetter(method);
if (!excludes.contains(name)) {
final PsiType type = PropertyUtil.getPropertyType(method);
assert type != null : method;
fieldsConstructor.addParameter(
new GrLightParameter(name, type, fieldsConstructor).setOptional(optional));
}
}
}
}
final Map<String, PsiMethod> properties = PropertyUtil.getAllProperties(true, false, methods);
for (PsiField field : CollectClassMembersUtil.getFields(psiClass, false)) {
final String name = field.getName();
if (includeFields
|| includeProperties && field instanceof GrField && ((GrField) field).isProperty()) {
if (!excludes.contains(name)
&& !field.hasModifierProperty(PsiModifier.STATIC)
&& !properties.containsKey(name)) {
fieldsConstructor.addParameter(
new GrLightParameter(name, field.getType(), fieldsConstructor).setOptional(optional));
}
}
}
}
public static PsiMethod generateGetterPrototype(PsiField field) {
PsiElementFactory factory = JavaPsiFacade.getInstance(field.getProject()).getElementFactory();
Project project = field.getProject();
String name = field.getName();
String getName = suggestGetterName(project, field);
try {
PsiMethod getMethod = factory.createMethod(getName, field.getType());
PsiUtil.setModifierProperty(getMethod, PsiModifier.PUBLIC, true);
if (field.hasModifierProperty(PsiModifier.STATIC)) {
PsiUtil.setModifierProperty(getMethod, PsiModifier.STATIC, true);
}
annotateWithNullableStuff(field, factory, getMethod);
PsiCodeBlock body = factory.createCodeBlockFromText("{\nreturn " + name + ";\n}", null);
getMethod.getBody().replace(body);
getMethod = (PsiMethod) CodeStyleManager.getInstance(project).reformat(getMethod);
return getMethod;
} catch (IncorrectOperationException e) {
LOG.error(e);
return null;
}
}
protected void performRefactoring(@NotNull UsageInfo[] usageInfos) {
final PsiClass psiClass = buildClass();
if (psiClass == null) return;
if (delegationRequired) {
buildDelegate();
}
myExtractEnumProcessor.performEnumConstantTypeMigration(usageInfos);
final Set<PsiMember> members = new HashSet<PsiMember>();
for (PsiMethod method : methods) {
final PsiMethod member = psiClass.findMethodBySignature(method, false);
if (member != null) {
members.add(member);
}
}
for (PsiField field : fields) {
final PsiField member = psiClass.findFieldByName(field.getName(), false);
if (member != null) {
members.add(member);
final PsiExpression initializer = member.getInitializer();
if (initializer != null) {
final boolean[] moveInitializerToConstructor = new boolean[1];
initializer.accept(
new JavaRecursiveElementWalkingVisitor() {
@Override
public void visitReferenceExpression(PsiReferenceExpression expression) {
super.visitReferenceExpression(expression);
final PsiElement resolved = expression.resolve();
if (resolved instanceof PsiField && !members.contains(resolved)) {
moveInitializerToConstructor[0] = true;
}
}
});
if (moveInitializerToConstructor[0]) {
final PsiElementFactory elementFactory = JavaPsiFacade.getElementFactory(myProject);
PsiMethod[] constructors = psiClass.getConstructors();
if (constructors.length == 0) {
final PsiMethod constructor =
(PsiMethod) elementFactory.createConstructor().setName(psiClass.getName());
constructors = new PsiMethod[] {(PsiMethod) psiClass.add(constructor)};
}
for (PsiMethod constructor : constructors) {
MoveInstanceMembersUtil.moveInitializerToConstructor(
elementFactory, constructor, member);
}
}
}
}
}
if (myGenerateAccessors) {
final NecessaryAccessorsVisitor visitor = checkNecessaryGettersSetters4SourceClass();
for (PsiField field : visitor.getFieldsNeedingGetter()) {
sourceClass.add(GenerateMembersUtil.generateGetterPrototype(field));
}
for (PsiField field : visitor.getFieldsNeedingSetter()) {
sourceClass.add(GenerateMembersUtil.generateSetterPrototype(field));
}
}
super.performRefactoring(usageInfos);
if (myNewVisibility == null) return;
for (PsiMember member : members) {
VisibilityUtil.fixVisibility(UsageViewUtil.toElements(usageInfos), member, myNewVisibility);
}
}
@Override
@NotNull
public PsiElement[] getSecondaryElements() {
PsiElement element = getPsiElement();
if (ApplicationManager.getApplication().isUnitTestMode()) return PsiElement.EMPTY_ARRAY;
if (element instanceof PsiField) {
final PsiField field = (PsiField) element;
PsiClass containingClass = field.getContainingClass();
if (containingClass != null) {
String fieldName = field.getName();
final String propertyName =
JavaCodeStyleManager.getInstance(getProject())
.variableNameToPropertyName(fieldName, VariableKind.FIELD);
Set<PsiMethod> accessors = new THashSet<PsiMethod>();
boolean isStatic = field.hasModifierProperty(PsiModifier.STATIC);
PsiMethod getter =
PropertyUtil.findPropertyGetterWithType(
propertyName,
isStatic,
field.getType(),
ContainerUtil.iterate(containingClass.getMethods()));
if (getter != null) accessors.add(getter);
PsiMethod setter =
PropertyUtil.findPropertySetterWithType(
propertyName,
isStatic,
field.getType(),
ContainerUtil.iterate(containingClass.getMethods()));
if (setter != null) accessors.add(setter);
accessors.addAll(PropertyUtil.getAccessors(containingClass, fieldName));
if (!accessors.isEmpty()) {
final boolean doSearch;
boolean containsPhysical =
ContainerUtil.find(
accessors,
new Condition<PsiMethod>() {
@Override
public boolean value(PsiMethod psiMethod) {
return psiMethod.isPhysical();
}
})
!= null;
if (!containsPhysical) {
doSearch = true;
} else {
doSearch =
Messages.showOkCancelDialog(
FindBundle.message("find.field.accessors.prompt", fieldName),
FindBundle.message("find.field.accessors.title"),
CommonBundle.getYesButtonText(),
CommonBundle.getNoButtonText(),
Messages.getQuestionIcon())
== DialogWrapper.OK_EXIT_CODE;
}
if (doSearch) {
final Set<PsiElement> elements = new THashSet<PsiElement>();
for (PsiMethod accessor : accessors) {
ContainerUtil.addAll(
elements, SuperMethodWarningUtil.checkSuperMethods(accessor, ACTION_STRING));
}
return PsiUtilBase.toPsiElementArray(elements);
}
}
}
}
return super.getSecondaryElements();
}
private void findUsagesForField(PsiField field, List<FixableUsageInfo> usages) {
final PsiManager psiManager = field.getManager();
final Project project = psiManager.getProject();
final GlobalSearchScope scope = GlobalSearchScope.allScope(project);
final String qualifiedName = getQualifiedName();
@NonNls String getter = null;
if (myGenerateAccessors) {
getter = GenerateMembersUtil.suggestGetterName(field);
} else {
final PsiMethod fieldGetter =
PropertyUtil.findPropertyGetter(sourceClass, field.getName(), false, false);
if (fieldGetter != null && isInMovedElement(fieldGetter)) {
getter = fieldGetter.getName();
}
}
@NonNls String setter = null;
if (myGenerateAccessors) {
setter = GenerateMembersUtil.suggestSetterName(field);
} else {
final PsiMethod fieldSetter =
PropertyUtil.findPropertySetter(sourceClass, field.getName(), false, false);
if (fieldSetter != null && isInMovedElement(fieldSetter)) {
setter = fieldSetter.getName();
}
}
final boolean isStatic = field.hasModifierProperty(PsiModifier.STATIC);
for (PsiReference reference : ReferencesSearch.search(field, scope)) {
final PsiElement element = reference.getElement();
if (isInMovedElement(element)) {
continue;
}
if (element instanceof PsiReferenceExpression) {
final PsiReferenceExpression exp = (PsiReferenceExpression) element;
if (RefactoringUtil.isPlusPlusOrMinusMinus(exp.getParent())) {
usages.add(
isStatic
? new ReplaceStaticVariableIncrementDecrement(exp, qualifiedName)
: new ReplaceInstanceVariableIncrementDecrement(
exp, delegateFieldName, setter, getter, field.getName()));
} else if (RefactoringUtil.isAssignmentLHS(exp)) {
usages.add(
isStatic
? new ReplaceStaticVariableAssignment(exp, qualifiedName)
: new ReplaceInstanceVariableAssignment(
PsiTreeUtil.getParentOfType(exp, PsiAssignmentExpression.class),
delegateFieldName,
setter,
getter,
field.getName()));
} else {
usages.add(
isStatic
? new ReplaceStaticVariableAccess(
exp, qualifiedName, enumConstants.contains(field))
: new ReplaceInstanceVariableAccess(
exp, delegateFieldName, getter, field.getName()));
}
if (!isStatic) {
delegationRequired = true;
}
} else if (element instanceof PsiDocTagValue) {
usages.add(new BindJavadocReference(element, qualifiedName, field.getName()));
}
}
}
public static String suggestPropertyName(Project project, PsiField field) {
JavaCodeStyleManager codeStyleManager = JavaCodeStyleManager.getInstance(project);
VariableKind kind = codeStyleManager.getVariableKind(field);
return codeStyleManager.variableNameToPropertyName(field.getName(), kind);
}