StudyRenameHandler.java

package com.jetbrains.edu.learning;

import com.intellij.openapi.actionSystem.DataContext;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.ui.Messages;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.refactoring.rename.RenameHandler;
import org.jetbrains.annotations.NotNull;

public class StudyRenameHandler implements RenameHandler {
  @Override
  public boolean isAvailableOnDataContext(DataContext dataContext) {
    return StudyUtils.canRenameOrMove(dataContext);
  }

  @Override
  public boolean isRenaming(DataContext dataContext) {
    return isAvailableOnDataContext(dataContext);
  }

  @Override
  public void invoke(@NotNull Project project, Editor editor, PsiFile file, DataContext dataContext) {
    Messages.showInfoMessage("This rename operation can break the course", "Invalid Rename Operation");
  }

  @Override
  public void invoke(@NotNull Project project, @NotNull PsiElement[] elements, DataContext dataContext) {
    invoke(project, null, null, dataContext);
  }
}