GroovyArgListSelectioner.java

/*
 * Copyright 2000-2014 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 org.jetbrains.plugins.groovy.editor.selection;

import com.intellij.codeInsight.editorActions.ExtendWordSelectionHandlerBase;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.util.TextRange;
import com.intellij.psi.PsiElement;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.arguments.GrArgumentList;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrCall;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrReferenceExpression;

import java.util.List;

/**
 * @author ilyas
 */
public class GroovyArgListSelectioner extends ExtendWordSelectionHandlerBase {
  @Override
  public boolean canSelect(PsiElement e) {
    return e instanceof GrArgumentList || e.getParent() instanceof GrReferenceExpression && e.getParent().getParent() instanceof GrCall;
  }

  @Override
  public List<TextRange> select(PsiElement element, CharSequence editorText, int cursorOffset, Editor editor) {
    List<TextRange> result = super.select(element, editorText, cursorOffset, editor);

    if (element instanceof GrArgumentList) {
      GrArgumentList args = ((GrArgumentList) element);
      TextRange range = args.getTextRange();
      if (range.contains(cursorOffset)) {
        PsiElement leftParen = args.getLeftParen();
        PsiElement rightParen = args.getRightParen();

        if (leftParen != null) {
          int leftOffset = leftParen.getTextOffset();
          if (rightParen != null) {
            if (leftOffset + 1 < rightParen.getTextOffset()) {
              int rightOffset = rightParen.getTextRange().getEndOffset();
              range = new TextRange(leftParen.getTextRange().getStartOffset() + 1, rightOffset - 1);
              result.add(range);
            }
          } else {
            range = new TextRange(leftParen.getTextRange().getStartOffset() + 1, element.getTextRange().getEndOffset());
            result.add(range);
          }
        }
      }
    }
    final PsiElement parent = element.getParent();
    if (parent instanceof GrReferenceExpression) {
      final GrArgumentList argumentList = ((GrCall)parent.getParent()).getArgumentList();
      final PsiElement refName = ((GrReferenceExpression)parent).getReferenceNameElement();
      if (argumentList != null && refName == element) {
        result.add(new TextRange(refName.getTextRange().getStartOffset(), argumentList.getTextRange().getEndOffset()));
      }
    }
    return result;
  }
}