JavaFxFileTypeFactory.java

package org.jetbrains.plugins.javaFX.fxml;

import com.intellij.openapi.fileTypes.FileType;
import com.intellij.openapi.fileTypes.FileTypeConsumer;
import com.intellij.openapi.fileTypes.FileTypeFactory;
import com.intellij.openapi.fileTypes.FileTypeManager;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.PsiFile;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;

public class JavaFxFileTypeFactory extends FileTypeFactory {
  @NonNls public static final String FXML_EXTENSION = "fxml";
  @NonNls static final String DOT_FXML_EXTENSION = "." + FXML_EXTENSION;

  public static boolean isFxml(@NotNull PsiFile file) {
    final VirtualFile virtualFile = file.getViewProvider().getVirtualFile();
    return isFxml(virtualFile);
  }

  public static boolean isFxml(@NotNull VirtualFile virtualFile) {
    if (FXML_EXTENSION.equals(virtualFile.getExtension())) {
      final FileType fileType = virtualFile.getFileType();
      if (fileType == getFileType() && !fileType.isBinary()) {
        return virtualFile.getName().endsWith(DOT_FXML_EXTENSION);
      }
    }
    return false;
  }

  @NotNull
  public static FileType getFileType() {
    return FileTypeManager.getInstance().getFileTypeByExtension(FXML_EXTENSION);
  }

  @Override
  public void createFileTypes(@NotNull FileTypeConsumer consumer) {
    final FileType fileType = consumer.getStandardFileTypeByName("XML");
    assert fileType != null;
    consumer.consume(fileType, FXML_EXTENSION);
  }
}