Fixed renaming of django file references (PY-9146).

python/openapi/src/com/jetbrains/python/psi/FileReferenceWithOneContext.java

@@ -17,11 +17,15 @@ package com.jetbrains.python.psi;
 
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.util.TextRange;
+import com.intellij.openapi.util.io.FileUtil;
 import com.intellij.openapi.vfs.VirtualFile;
+import com.intellij.psi.PsiElement;
 import com.intellij.psi.PsiFileSystemItem;
+import com.intellij.psi.impl.source.resolve.reference.impl.CachingReference;
 import com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference;
 import com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReferenceHelper;
 import com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReferenceSet;
+import com.intellij.util.IncorrectOperationException;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.Collection;
@@ -46,4 +50,15 @@ public class FileReferenceWithOneContext extends FileReference {
   protected Collection<PsiFileSystemItem> getContextsForBindToElement(VirtualFile curVFile, Project project, FileReferenceHelper helper) {
     return getContexts();
   }
+
+  @Override
+  protected PsiElement rename(final String newName) throws IncorrectOperationException {
+    if (FileUtil.isAbsolutePlatformIndependent(newName)) {
+      return super.rename(newName);
+    }
+    else {
+      PsiElement element = getElement();
+      return CachingReference.getManipulator(element).handleContentChange(element, getRangeInElement(), newName);
+    }
+  }
 }

python/openapi/src/com/jetbrains/python/templateLanguages/TemplateFileReference.java

@@ -82,7 +82,7 @@ public class TemplateFileReference extends WeakFileReference {
       dstItem = _dstItem;
     }
 
-    final Collection<PsiFileSystemItem> contexts = getFileReferenceSet().getDefaultContexts();
+    final Collection<PsiFileSystemItem> contexts = getContexts();
     switch (contexts.size()) {
       case 0:
         break;

python/src/com/jetbrains/python/psi/impl/PyPathEvaluator.java

@@ -51,11 +51,12 @@ public class PyPathEvaluator {
         if (argValue == null) {
           return null;
         }
-        if (FileUtil.isAbsolute(argValue)) {
+        if (FileUtil.isAbsolutePlatformIndependent(argValue)) {
           return argValue;
         }
         else {
-          return new File(new File(containingFilePath).getParent(), argValue).getPath();
+          String path = new File(new File(containingFilePath).getParent(), argValue).getPath();
+          return path.replace("\\", "/");
         }
       }
       else if (call.isCalleeText(PyNames.REPLACE) && args.length == 2) {
@@ -98,13 +99,18 @@ public class PyPathEvaluator {
   }
 
   public static String evaluatePathInJoin(String containingFilePath, PyExpression[] args, int endElement, Set<PyExpression> visited) {
-    String result = containingFilePath;
+    String result = null;
     for (int i = 0; i < endElement; i++) {
-      String arg = evaluate(args[i], result, visited);
+      String arg = evaluate(args[i], containingFilePath, visited);
       if (arg == null) {
         return null;
       }
-      result = arg;
+      if (result == null) {
+        result = arg;
+      }
+      else {
+        result = new File(result, arg).getPath().replace("\\", "/");
+      }
     }
     return result;
   }