Package org.intellij.grammar.inspection

Source Code of org.intellij.grammar.inspection.CreateRuleFromTokenFix

/*
* Copyright 2011-2014 Gregory Shrago
*
* 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 org.intellij.grammar.inspection;

import com.intellij.codeInspection.LocalQuickFix;
import com.intellij.codeInspection.ProblemDescriptor;
import com.intellij.openapi.application.AccessToken;
import com.intellij.openapi.application.WriteAction;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.ScrollType;
import com.intellij.openapi.fileEditor.FileEditor;
import com.intellij.openapi.fileEditor.FileEditorManager;
import com.intellij.openapi.fileEditor.TextEditor;
import com.intellij.openapi.project.Project;
import com.intellij.psi.PsiElement;
import com.intellij.psi.util.PsiTreeUtil;
import org.intellij.grammar.psi.BnfRule;
import org.intellij.grammar.refactor.BnfIntroduceRuleHandler;
import org.jetbrains.annotations.NotNull;

/**
* Created by IntelliJ IDEA.
* Date: 8/25/11
* Time: 7:45 PM
*
* @author Vadim Romansky
*/
public class CreateRuleFromTokenFix implements LocalQuickFix {

  private final String myName;

  public CreateRuleFromTokenFix(String name) {
    myName = name;
  }

  @NotNull
  @Override
  public String getName() {
    return "Create '"+myName+"' rule";
  }

  @NotNull
  @Override
  public String getFamilyName() {
    return "Create rule from usage";
  }

  @Override
  public void applyFix(final @NotNull Project project, @NotNull ProblemDescriptor descriptor) {
    final AccessToken token = WriteAction.start();
    try {
      final PsiElement element = descriptor.getPsiElement();
      final BnfRule rule = PsiTreeUtil.getParentOfType(element, BnfRule.class);
      if (rule == null) return;

      final BnfRule addedRule = BnfIntroduceRuleHandler.addNextRule(project, rule, "private " + myName + " ::= ");
      final FileEditor selectedEditor = FileEditorManager.getInstance(project).getSelectedEditor(rule.getContainingFile().getVirtualFile());
      if (selectedEditor instanceof TextEditor) {
        final Editor editor = ((TextEditor)selectedEditor).getEditor();
        editor.getCaretModel().moveToOffset(addedRule.getTextRange().getEndOffset() - (BnfIntroduceRuleHandler.endsWithSemicolon(addedRule)? 1 : 0));
        editor.getScrollingModel().scrollToCaret(ScrollType.MAKE_VISIBLE);
      }
    }
    finally {
      token.finish();
    }
  }
}
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