From 3fb215dbc06d404521960e098aed2a810c18c050 Mon Sep 17 00:00:00 2001
From: "Anna.Kozlova" <anna.kozlova@jetbrains.com>
Date: Thu, 31 Mar 2016 20:16:17 +0200
Subject: [PATCH] change signature: update expected type for default value on
 type change (IDEA-153576)

---
 .../JavaParameterTableModel.java              | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/java/java-impl/src/com/intellij/refactoring/changeSignature/JavaParameterTableModel.java b/java/java-impl/src/com/intellij/refactoring/changeSignature/JavaParameterTableModel.java
index 6d075daac616..4a51d113455e 100644
--- a/java/java-impl/src/com/intellij/refactoring/changeSignature/JavaParameterTableModel.java
+++ b/java/java-impl/src/com/intellij/refactoring/changeSignature/JavaParameterTableModel.java
@@ -23,6 +23,7 @@ import com.intellij.openapi.fileTypes.StdFileTypes;
 import com.intellij.openapi.project.Project;
 import com.intellij.psi.*;
 import com.intellij.psi.codeStyle.VariableKind;
+import com.intellij.psi.impl.source.PsiExpressionCodeFragmentImpl;
 import com.intellij.refactoring.ui.JavaCodeFragmentTableCellEditor;
 import com.intellij.refactoring.ui.RefactoringDialog;
 import com.intellij.refactoring.ui.StringTableCellEditor;
@@ -30,6 +31,7 @@ import com.intellij.refactoring.util.CanonicalTypes;
 import com.intellij.ui.ColoredTableCellRenderer;
 import com.intellij.ui.EditorTextField;
 import com.intellij.ui.SimpleTextAttributes;
+import com.intellij.util.IncorrectOperationException;
 import com.intellij.util.ui.ColumnInfo;
 import org.jetbrains.annotations.Nullable;
 
@@ -106,6 +108,26 @@ public class JavaParameterTableModel extends ParameterTableModelBase<ParameterIn
     };
   }
 
+  @Override
+  public void setValueAtWithoutUpdate(Object aValue, int rowIndex, int columnIndex) {
+    super.setValueAtWithoutUpdate(aValue, rowIndex, columnIndex);
+    //if type was changed - update default value's expected type
+    PsiType type = null;
+    if (columnIndex == 0 && aValue instanceof String) {
+      try {
+        type = JavaPsiFacade.getElementFactory(myProject).createTypeFromText((String)aValue, myTypeContext);
+      }
+      catch (IncorrectOperationException e) {
+        type = null;
+      }
+    }
+
+    if (type != null) {
+      final ParameterTableModelItemBase<ParameterInfoImpl> item = getItem(rowIndex);
+      ((PsiExpressionCodeFragmentImpl)item.defaultValueCodeFragment).setExpectedType(type);
+    }
+  }
+
   @Nullable
   private static PsiType getRowType(JTable table, int row) {
     try {