ScratchFileType.java

/*
 * Copyright 2000-2015 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.ide.scratch;

import com.intellij.openapi.fileTypes.FileType;
import com.intellij.openapi.fileTypes.LanguageFileType;
import com.intellij.openapi.fileTypes.PlainTextFileType;
import com.intellij.openapi.fileTypes.PlainTextLanguage;
import com.intellij.openapi.fileTypes.ex.FileTypeIdentifiableByVirtualFile;
import com.intellij.openapi.vfs.VirtualFile;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import javax.swing.*;

/**
 * @author gregsh
 */
public class ScratchFileType extends LanguageFileType implements FileTypeIdentifiableByVirtualFile {

  public static final LanguageFileType INSTANCE = new ScratchFileType();

  ScratchFileType() {
    super(PlainTextLanguage.INSTANCE);
  }

  @Override
  public boolean isMyFileType(@NotNull VirtualFile file) {
    return ScratchFileService.getInstance().getRootType(file) != null;
  }

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

  @NotNull
  @Override
  public String getDescription() {
    return "Scratch";
  }

  @NotNull
  @Override
  public String getDefaultExtension() {
    return "";
  }

  @Nullable
  @Override
  public Icon getIcon() {
    return PlainTextFileType.INSTANCE.getIcon();
  }

  @Override
  public boolean isReadOnly() {
    return true;
  }

  @Nullable
  @Override
  public String getCharset(@NotNull VirtualFile file, @NotNull byte[] content) {
    return null;
  }
}