java/java-impl/src/com/intellij/codeInsight/editorActions/wordSelection/AntLikePropertySelectionHandler.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.intellij.codeInsight.editorActions.wordSelection;
  17
  18 import com.intellij.codeInsight.editorActions.ExtendWordSelectionHandler;
  19 import com.intellij.lang.Language;
  20 import com.intellij.lang.StdLanguages;
  21 import com.intellij.openapi.editor.Editor;
  22 import com.intellij.openapi.util.TextRange;
  23 import com.intellij.psi.PsiComment;
  24 import com.intellij.psi.PsiElement;
  25 import com.intellij.psi.util.PsiTreeUtil;
  26
  27 import java.util.Arrays;
  28 import java.util.Collections;
  29 import java.util.List;
  30
  31 public class AntLikePropertySelectionHandler implements ExtendWordSelectionHandler {
  32   public boolean canSelect(PsiElement e) {
  33     Language l = e.getLanguage();
  34     if (!(l.equals(StdLanguages.JAVA)
  35           || l.equals(StdLanguages.XML)
  36           || l.equals(StdLanguages.ANT))) {
  37       return false;
  38     }
  39
  40     return PsiTreeUtil.getParentOfType(e, PsiComment.class) == null;
  41   }
  42
  43   public List<TextRange> select(PsiElement e, CharSequence editorText, int cursorOffset, Editor editor) {
  44     TextRange range = e.getTextRange();
  45     char prevLeftChar = ' ';
  46     for (int left = cursorOffset; left >= range.getStartOffset(); left--) {
  47       char leftChar = editorText.charAt(left);
  48       if (leftChar == '}') return Collections.emptyList();
  49       if (leftChar == '$' && prevLeftChar == '{') {
  50         for (int right = cursorOffset; right < range.getEndOffset(); right++) {
  51           char rightChar = editorText.charAt(right);
  52           if (rightChar == '{') return Collections.emptyList();
  53           if (rightChar == '}') {
  54             return Arrays.asList(new TextRange(left + 2, right), new TextRange(left, right + 1));
  55           }
  56         }
  57       }
  58       prevLeftChar = leftChar;
  59     }
  60     return Collections.emptyList();
  61   }
  62 }