/*
 * User: anna
 * Date: 27-Aug-2009
 */
package com.intellij.refactoring.typeMigration;

import com.intellij.codeInsight.FileModificationService;
import com.intellij.codeInsight.daemon.impl.quickfix.VariableTypeFix;
import com.intellij.codeInsight.intention.IntentionAction;
import com.intellij.codeInsight.quickfix.ChangeVariableTypeQuickFixProvider;
import com.intellij.openapi.command.undo.UndoUtil;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.project.Project;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.psi.PsiType;
import com.intellij.psi.PsiVariable;
import com.intellij.psi.codeStyle.JavaCodeStyleManager;
import com.intellij.psi.search.GlobalSearchScope;
import com.intellij.util.IncorrectOperationException;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

public class TypeMigrationVariableTypeFixProvider implements ChangeVariableTypeQuickFixProvider {
  private static final Logger LOG1 = Logger.getInstance("#" + TypeMigrationVariableTypeFixProvider.class.getName());

  @NotNull
  public IntentionAction[] getFixes(@NotNull PsiVariable variable, @NotNull PsiType toReturn) {
    return new IntentionAction[]{new VariableTypeFix(variable, toReturn) {
      @NotNull
      @Override
      public String getText() {
        return "Migrate \'" + myName + "\' type to \'" + getReturnType().getCanonicalText() + "\'";
      }

      @Override
      public void invoke(@NotNull Project project,
                         @NotNull PsiFile file,
                         @Nullable("is null when called from inspection") Editor editor,
                         @NotNull PsiElement startElement,
                         @NotNull PsiElement endElement) {
        final PsiVariable myVariable = (PsiVariable)startElement;

        if (!FileModificationService.getInstance().prepareFileForWrite(myVariable.getContainingFile())) return;
        try {
          myVariable.normalizeDeclaration();
          final TypeMigrationRules rules = new TypeMigrationRules(TypeMigrationLabeler.getElementType(myVariable));
          rules.setMigrationRootType(getReturnType());
          rules.setBoundScope(GlobalSearchScope.projectScope(project));
          TypeMigrationProcessor.runHighlightingTypeMigration(project, editor, rules, myVariable);
          JavaCodeStyleManager.getInstance(project).shortenClassReferences(myVariable);
          UndoUtil.markPsiFileForUndo(file);
        }
        catch (IncorrectOperationException e) {
          LOG1.error(e);
        }
      }
    }};
  }
}