001////////////////////////////////////////////////////////////////////////////////
002// checkstyle: Checks Java source code for adherence to a set of rules.
003// Copyright (C) 2001-2017 the original author or authors.
004//
005// This library is free software; you can redistribute it and/or
006// modify it under the terms of the GNU Lesser General Public
007// License as published by the Free Software Foundation; either
008// version 2.1 of the License, or (at your option) any later version.
009//
010// This library is distributed in the hope that it will be useful,
011// but WITHOUT ANY WARRANTY; without even the implied warranty of
012// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
013// Lesser General Public License for more details.
014//
015// You should have received a copy of the GNU Lesser General Public
016// License along with this library; if not, write to the Free Software
017// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
018////////////////////////////////////////////////////////////////////////////////
019
020package com.puppycrawl.tools.checkstyle.gui;
021
022import java.awt.Color;
023import java.util.List;
024
025import javax.swing.JTextArea;
026
027import com.puppycrawl.tools.checkstyle.api.DetailAST;
028import com.puppycrawl.tools.checkstyle.api.DetailNode;
029
030/**
031 * Helper class to select a code.
032 * @author unknown
033 */
034public class CodeSelector {
035    /** Editor. */
036    private final JTextArea editor;
037    /** Presentation model. */
038    private final CodeSelectorPresentation pModel;
039
040    /**
041     * Constructor.
042     * @param node ast node.
043     * @param editor text area editor.
044     * @param lines2position list to map lines.
045     */
046    public CodeSelector(final Object node, final JTextArea editor,
047                        final List<Integer> lines2position) {
048        this.editor = editor;
049        if (node instanceof DetailAST) {
050            pModel = new CodeSelectorPresentation((DetailAST) node, lines2position);
051        }
052        else {
053            pModel = new CodeSelectorPresentation((DetailNode) node, lines2position);
054        }
055    }
056
057    /**
058     * Set selection.
059     */
060    public void select() {
061        pModel.findSelectionPositions();
062        editor.setSelectedTextColor(Color.blue);
063        editor.requestFocusInWindow();
064        editor.setCaretPosition(pModel.getSelectionStart());
065        editor.moveCaretPosition(pModel.getSelectionEnd());
066    }
067}