blaze-base/src/com/google/idea/blaze/base/lang/buildfile/editor/BuildEnterBetweenBracketsHandler.java

/*
 * Copyright 2016 The Bazel Authors. All rights reserved.
 *
 * 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.google.idea.blaze.base.lang.buildfile.editor;

import com.google.idea.blaze.base.lang.buildfile.psi.BuildFile;
import com.intellij.codeInsight.editorActions.enter.EnterBetweenBracesHandler;
import com.intellij.openapi.actionSystem.DataContext;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.actionSystem.EditorActionHandler;
import com.intellij.openapi.util.Ref;
import com.intellij.psi.PsiFile;
import org.jetbrains.annotations.NotNull;

/**
 * Extends IntelliJ's {@link EnterBetweenBracesHandler}, including square brackets as a valid
 * brace pair type.
 */
public class BuildEnterBetweenBracketsHandler extends EnterBetweenBracesHandler {
  @Override
  public Result preprocessEnter(@NotNull PsiFile file,
                                @NotNull Editor editor,
                                @NotNull Ref<Integer> caretOffsetRef,
                                @NotNull Ref<Integer> caretAdvance,
                                @NotNull DataContext dataContext,
                                EditorActionHandler originalHandler) {
    if (!(file instanceof BuildFile)) {
      return Result.Continue;
    }
    return super.preprocessEnter(file, editor, caretOffsetRef, caretAdvance, dataContext, originalHandler);
  }

  @Override
  protected boolean isBracePair(char c1, char c2) {
    return c1 == '[' && c2  == ']';
  }
}