inline import static statement

java/openapi/src/com/intellij/psi/util/ImportsUtil.java

@@ -0,0 +1,82 @@
+/*
+ * Copyright 2000-2011 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.psi.util;
+
+import com.intellij.psi.*;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+
+/**
+ * User: anna
+ * Date: 9/1/11
+ */
+public class ImportsUtil {
+  private ImportsUtil() {
+  }
+
+  public static List<PsiJavaCodeReferenceElement> collectReferencesThrough(PsiFile file,
+                                                                           @Nullable final PsiJavaCodeReferenceElement refExpr,
+                                                                           final PsiImportStaticStatement staticImport) {
+    final List<PsiJavaCodeReferenceElement> expressionToExpand = new ArrayList<PsiJavaCodeReferenceElement>();
+    file.accept(new JavaRecursiveElementWalkingVisitor() {
+      @Override
+      public void visitReferenceElement(PsiJavaCodeReferenceElement expression) {
+        if (refExpr == null || refExpr != expression) {
+          final PsiElement resolveScope = expression.advancedResolve(true).getCurrentFileResolveScope();
+          if (resolveScope == staticImport) {
+            expressionToExpand.add(expression);
+          }
+        }
+        super.visitElement(expression);
+      }
+    });
+    return expressionToExpand;
+  }
+
+  public static void replaceAllAndDeleteImport(List<PsiJavaCodeReferenceElement> expressionToExpand,
+                                               @Nullable PsiJavaCodeReferenceElement refExpr,
+                                                PsiImportStaticStatement staticImport) {
+    if (refExpr != null) {
+      expressionToExpand.add(refExpr);
+    }
+    Collections.sort(expressionToExpand, new Comparator<PsiJavaCodeReferenceElement>() {
+      @Override
+      public int compare(PsiJavaCodeReferenceElement o1, PsiJavaCodeReferenceElement o2) {
+        return o2.getTextOffset() - o1.getTextOffset();
+      }
+    });
+    for (PsiJavaCodeReferenceElement expression : expressionToExpand) {
+      expand(expression, staticImport);
+    }
+    staticImport.delete();
+  }
+
+  public static void expand(@NotNull PsiJavaCodeReferenceElement refExpr, PsiImportStaticStatement staticImport) {
+    final PsiElementFactory elementFactory = JavaPsiFacade.getElementFactory(refExpr.getProject());
+    final PsiReferenceExpression referenceExpression = elementFactory.createReferenceExpression(staticImport.resolveTargetClass());
+    if (refExpr instanceof PsiReferenceExpression) {
+      ((PsiReferenceExpression)refExpr).setQualifierExpression(referenceExpression);
+    }
+    else {
+      refExpr.replace(elementFactory.createReferenceFromText(referenceExpression.getText() + "." + refExpr.getText(), refExpr));
+    }
+  }
+}