platform/lang-impl/src/com/intellij/codeInsight/template/macro/FileNameMacro.java

/*
 * Copyright 2000-2012 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.codeInsight.template.macro;

import com.intellij.codeInsight.CodeInsightBundle;
import com.intellij.codeInsight.template.*;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.PsiDocumentManager;
import com.intellij.psi.PsiFile;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

/**
 * @author Nikolay Matveev
 */
public class FileNameMacro extends Macro {

  @Override
  public String getName() {
    return "fileName";
  }

  @Override
  public String getPresentableName() {
    return CodeInsightBundle.message("macro.file.name");
  }

  @Override
  public Result calculateResult(@NotNull Expression[] params, ExpressionContext context) {
    final PsiFile file = PsiDocumentManager.getInstance(context.getProject()).getPsiFile(context.getEditor().getDocument());
    if (file != null) {
      final VirtualFile virtualFile = file.getVirtualFile();
      if (virtualFile != null) {
        return calculateResult(virtualFile);
      }
    }
    return null;
  }

  @Nullable
  protected TextResult calculateResult(@NotNull VirtualFile virtualFile) {
    return new TextResult(virtualFile.getName());
  }
}