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1   ////////////////////////////////////////////////////////////////////////////////
2   // checkstyle: Checks Java source code for adherence to a set of rules.
3   // Copyright (C) 2001-2017 the original author or authors.
4   //
5   // This library is free software; you can redistribute it and/or
6   // modify it under the terms of the GNU Lesser General Public
7   // License as published by the Free Software Foundation; either
8   // version 2.1 of the License, or (at your option) any later version.
9   //
10  // This library is distributed in the hope that it will be useful,
11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  // Lesser General Public License for more details.
14  //
15  // You should have received a copy of the GNU Lesser General Public
16  // License along with this library; if not, write to the Free Software
17  // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18  ////////////////////////////////////////////////////////////////////////////////
19  
20  package com.puppycrawl.tools.checkstyle.gui;
21  
22  import java.awt.Color;
23  import java.util.List;
24  
25  import javax.swing.JTextArea;
26  
27  import com.google.common.collect.ImmutableList;
28  import com.puppycrawl.tools.checkstyle.api.DetailAST;
29  import com.puppycrawl.tools.checkstyle.api.DetailNode;
30  
31  /**
32   * Helper class to select a code.
33   * @author unknown
34   */
35  public class CodeSelector {
36      /** Editor. */
37      private final JTextArea editor;
38      /** Presentation model. */
39      private final CodeSelectorPresentation pModel;
40  
41      /**
42       * Constructor.
43       * @param node ast node.
44       * @param editor text area editor.
45       * @param lines2position list to map lines.
46       */
47      public CodeSelector(final Object node, final JTextArea editor,
48                          final List<Integer> lines2position) {
49          this.editor = editor;
50          if (node instanceof DetailAST) {
51              pModel = new CodeSelectorPresentation((DetailAST) node,
52                      ImmutableList.copyOf(lines2position));
53          }
54          else {
55              pModel = new CodeSelectorPresentation((DetailNode) node,
56                      ImmutableList.copyOf(lines2position));
57          }
58      }
59  
60      /**
61       * Set selection.
62       */
63      public void select() {
64          pModel.findSelectionPositions();
65          editor.setSelectedTextColor(Color.blue);
66          editor.requestFocusInWindow();
67          editor.setCaretPosition(pModel.getSelectionStart());
68          editor.moveCaretPosition(pModel.getSelectionEnd());
69      }
70  }