public static boolean addStaticImport(
@NotNull String qualifierClass,
@NonNls @NotNull String memberName,
@NotNull PsiElement context) {
if (!nameCanBeStaticallyImported(qualifierClass, memberName, context)) {
return false;
}
final PsiClass containingClass = PsiTreeUtil.getParentOfType(context, PsiClass.class);
if (InheritanceUtil.isInheritor(containingClass, qualifierClass)) {
return true;
}
final PsiFile psiFile = context.getContainingFile();
if (!(psiFile instanceof PsiJavaFile)) {
return false;
}
final PsiJavaFile javaFile = (PsiJavaFile) psiFile;
final PsiImportList importList = javaFile.getImportList();
if (importList == null) {
return false;
}
final PsiImportStatementBase existingImportStatement =
importList.findSingleImportStatement(memberName);
if (existingImportStatement != null) {
return false;
}
final PsiImportStaticStatement onDemandImportStatement =
findOnDemandImportStaticStatement(importList, qualifierClass);
if (onDemandImportStatement != null
&& !hasOnDemandImportStaticConflict(qualifierClass, memberName, context)) {
return true;
}
final Project project = context.getProject();
final GlobalSearchScope scope = context.getResolveScope();
final JavaPsiFacade psiFacade = JavaPsiFacade.getInstance(project);
final PsiClass aClass = psiFacade.findClass(qualifierClass, scope);
if (aClass == null) {
return false;
}
final String qualifiedName = aClass.getQualifiedName();
if (qualifiedName == null) {
return false;
}
final List<PsiImportStaticStatement> imports = getMatchingImports(importList, qualifiedName);
final CodeStyleSettings codeStyleSettings = CodeStyleSettingsManager.getSettings(project);
final PsiElementFactory elementFactory = psiFacade.getElementFactory();
if (imports.size() < codeStyleSettings.NAMES_COUNT_TO_USE_IMPORT_ON_DEMAND) {
importList.add(elementFactory.createImportStaticStatement(aClass, memberName));
} else {
for (PsiImportStaticStatement importStatement : imports) {
importStatement.delete();
}
importList.add(elementFactory.createImportStaticStatement(aClass, "*"));
}
return true;
}
public static void addImportIfNeeded(@NotNull PsiClass aClass, @NotNull PsiElement context) {
final PsiFile file = context.getContainingFile();
if (!(file instanceof PsiJavaFile)) {
return;
}
final PsiJavaFile javaFile = (PsiJavaFile) file;
final PsiClass outerClass = aClass.getContainingClass();
if (outerClass == null) {
if (PsiTreeUtil.isAncestor(javaFile, aClass, true)) {
return;
}
} else if (PsiTreeUtil.isAncestor(outerClass, context, true)) {
final PsiElement brace = outerClass.getLBrace();
if (brace != null && brace.getTextOffset() < context.getTextOffset()) {
return;
}
}
final String qualifiedName = aClass.getQualifiedName();
if (qualifiedName == null) {
return;
}
final PsiImportList importList = javaFile.getImportList();
if (importList == null) {
return;
}
final String containingPackageName = javaFile.getPackageName();
@NonNls final String packageName = ClassUtil.extractPackageName(qualifiedName);
if (containingPackageName.equals(packageName)
|| importList.findSingleClassImportStatement(qualifiedName) != null) {
return;
}
if (importList.findOnDemandImportStatement(packageName) != null
&& !hasDefaultImportConflict(qualifiedName, javaFile)
&& !hasOnDemandImportConflict(qualifiedName, javaFile)) {
return;
}
final Project project = importList.getProject();
final JavaPsiFacade psiFacade = JavaPsiFacade.getInstance(project);
final PsiElementFactory elementFactory = psiFacade.getElementFactory();
final PsiImportStatement importStatement = elementFactory.createImportStatement(aClass);
importList.add(importStatement);
}
/**
* Adds import if it is needed.
*
* @return false when the FQ-name have to be used in code (e.g. when conflicting imports already
* exist)
*/
public boolean addImport(@NotNull PsiJavaFile file, @NotNull PsiClass refClass) {
final JavaPsiFacade facade = JavaPsiFacade.getInstance(file.getProject());
PsiElementFactory factory = facade.getElementFactory();
PsiResolveHelper helper = facade.getResolveHelper();
String className = refClass.getQualifiedName();
if (className == null) return true;
String packageName = getPackageOrClassName(className);
String shortName = PsiNameHelper.getShortClassName(className);
PsiClass conflictSingleRef = findSingleImportByShortName(file, shortName);
if (conflictSingleRef != null) {
return className.equals(conflictSingleRef.getQualifiedName());
}
PsiClass curRefClass = helper.resolveReferencedClass(shortName, file);
if (file.getManager().areElementsEquivalent(refClass, curRefClass)) {
return true;
}
boolean useOnDemand = true;
if (packageName.length() == 0) {
useOnDemand = false;
}
PsiElement conflictPackageRef = findImportOnDemand(file, packageName);
if (conflictPackageRef != null) {
useOnDemand = false;
}
List<PsiElement> classesToReimport = new ArrayList<PsiElement>();
List<PsiJavaCodeReferenceElement> importRefs = getImportsFromPackage(file, packageName);
if (useOnDemand) {
if (mySettings.USE_SINGLE_CLASS_IMPORTS
&& importRefs.size() + 1 < mySettings.CLASS_COUNT_TO_USE_IMPORT_ON_DEMAND
&& !mySettings.PACKAGES_TO_USE_IMPORT_ON_DEMAND.contains(packageName)) {
useOnDemand = false;
}
// name of class we try to import is the same as of the class defined in this file
if (curRefClass != null) {
useOnDemand = true;
}
// check conflicts
if (useOnDemand) {
PsiElement[] onDemandRefs = file.getOnDemandImports(false, true);
if (onDemandRefs.length > 0) {
PsiPackage aPackage = facade.findPackage(packageName);
if (aPackage != null) {
PsiDirectory[] dirs = aPackage.getDirectories();
for (PsiDirectory dir : dirs) {
PsiFile[] files = dir.getFiles(); // do not iterate classes - too slow when not loaded
for (PsiFile aFile : files) {
if (aFile instanceof PsiJavaFile) {
String name = aFile.getVirtualFile().getNameWithoutExtension();
for (PsiElement ref : onDemandRefs) {
String refName =
ref instanceof PsiClass
? ((PsiClass) ref).getQualifiedName()
: ((PsiPackage) ref).getQualifiedName();
String conflictClassName = refName + "." + name;
GlobalSearchScope resolveScope = file.getResolveScope();
PsiClass conflictClass = facade.findClass(conflictClassName, resolveScope);
if (conflictClass != null && helper.isAccessible(conflictClass, file, null)) {
String conflictClassName2 = aPackage.getQualifiedName() + "." + name;
PsiClass conflictClass2 = facade.findClass(conflictClassName2, resolveScope);
if (conflictClass2 != null
&& helper.isAccessible(conflictClass2, file, null)) {
if (ReferencesSearch.search(
conflictClass, new LocalSearchScope(file), false)
.findFirst()
!= null) {
classesToReimport.add(conflictClass);
}
}
}
}
}
}
}
}
}
}
}
try {
PsiImportList importList = file.getImportList();
PsiImportStatement statement;
if (useOnDemand) {
statement = factory.createImportStatementOnDemand(packageName);
} else {
statement = factory.createImportStatement(refClass);
}
importList.add(statement);
if (useOnDemand) {
for (PsiJavaCodeReferenceElement ref : importRefs) {
LOG.assertTrue(ref.getParent() instanceof PsiImportStatement);
if (!ref.isValid()) continue; // todo[dsl] Q?
classesToReimport.add(ref.resolve());
PsiImportStatement importStatement = (PsiImportStatement) ref.getParent();
importStatement.delete();
}
}
for (PsiElement aClassesToReimport : classesToReimport) {
PsiClass aClass = (PsiClass) aClassesToReimport;
if (aClass != null) {
addImport(file, aClass);
}
}
} catch (IncorrectOperationException e) {
LOG.error(e);
}
return true;
}
public static void invoke(
final Project project, PsiFile file, final Editor editor, PsiElement element) {
if (!FileModificationService.getInstance().prepareFileForWrite(file)) return;
final PsiJavaCodeReferenceElement refExpr = (PsiJavaCodeReferenceElement) element.getParent();
final PsiClass aClass = (PsiClass) refExpr.resolve();
if (aClass == null) {
return;
}
final PsiClass containingClass = PsiUtil.getTopLevelClass(refExpr);
if (aClass != containingClass) {
PsiImportList importList = ((PsiJavaFile) file).getImportList();
if (importList == null) {
return;
}
boolean alreadyImported = false;
for (PsiImportStaticStatement statement : importList.getImportStaticStatements()) {
if (!statement.isOnDemand()) continue;
PsiClass staticResolve = statement.resolveTargetClass();
if (aClass == staticResolve) {
alreadyImported = true;
break;
}
}
if (!alreadyImported) {
PsiImportStaticStatement importStaticStatement =
JavaPsiFacade.getInstance(file.getProject())
.getElementFactory()
.createImportStaticStatement(aClass, "*");
importList.add(importStaticStatement);
}
}
List<PsiFile> roots = file.getViewProvider().getAllFiles();
for (final PsiFile root : roots) {
PsiElement copy = root.copy();
final PsiManager manager = root.getManager();
final TIntArrayList expressionToDequalifyOffsets = new TIntArrayList();
copy.accept(
new JavaRecursiveElementWalkingVisitor() {
int delta;
@Override
public void visitReferenceElement(PsiJavaCodeReferenceElement expression) {
if (isParameterizedReference(expression)) return;
PsiElement qualifierExpression = expression.getQualifier();
if (qualifierExpression instanceof PsiJavaCodeReferenceElement
&& ((PsiJavaCodeReferenceElement) qualifierExpression).isReferenceTo(aClass)) {
try {
PsiElement resolved = expression.resolve();
int end = expression.getTextRange().getEndOffset();
qualifierExpression.delete();
delta += end - expression.getTextRange().getEndOffset();
PsiElement after = expression.resolve();
if (manager.areElementsEquivalent(after, resolved)) {
expressionToDequalifyOffsets.add(
expression.getTextRange().getStartOffset() + delta);
}
} catch (IncorrectOperationException e) {
LOG.error(e);
}
}
super.visitElement(expression);
}
});
expressionToDequalifyOffsets.forEachDescending(
new TIntProcedure() {
@Override
public boolean execute(int offset) {
PsiJavaCodeReferenceElement expression =
PsiTreeUtil.findElementOfClassAtOffset(
root, offset, PsiJavaCodeReferenceElement.class, false);
if (expression == null) {
return false;
}
PsiElement qualifierExpression = expression.getQualifier();
if (qualifierExpression instanceof PsiJavaCodeReferenceElement
&& ((PsiJavaCodeReferenceElement) qualifierExpression).isReferenceTo(aClass)) {
qualifierExpression.delete();
if (editor != null) {
HighlightManager.getInstance(project)
.addRangeHighlight(
editor,
expression.getTextRange().getStartOffset(),
expression.getTextRange().getEndOffset(),
EditorColorsManager.getInstance()
.getGlobalScheme()
.getAttributes(EditorColors.SEARCH_RESULT_ATTRIBUTES),
false,
null);
}
}
return true;
}
});
}
}