001////////////////////////////////////////////////////////////////////////////////
002// checkstyle: Checks Java source code for adherence to a set of rules.
003// Copyright (C) 2001-2021 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.ArrayList;
024import java.util.List;
025
026import javax.swing.JTextArea;
027
028import com.puppycrawl.tools.checkstyle.api.DetailAST;
029import com.puppycrawl.tools.checkstyle.api.DetailNode;
030
031/**
032 * Helper class to select a code.
033 */
034public class CodeSelector {
035
036    /** Editor. */
037    private final JTextArea editor;
038    /** Presentation model. */
039    private final CodeSelectorPresentation pModel;
040
041    /**
042     * Constructor.
043     *
044     * @param node ast node.
045     * @param editor text area editor.
046     * @param lines2position list to map lines.
047     */
048    public CodeSelector(final Object node, final JTextArea editor,
049                        final List<Integer> lines2position) {
050        this.editor = editor;
051        if (node instanceof DetailAST) {
052            pModel = new CodeSelectorPresentation((DetailAST) node,
053                    new ArrayList<>(lines2position));
054        }
055        else {
056            pModel = new CodeSelectorPresentation((DetailNode) node,
057                    new ArrayList<>(lines2position));
058        }
059    }
060
061    /**
062     * Set selection.
063     */
064    public void select() {
065        pModel.findSelectionPositions();
066        editor.setSelectedTextColor(Color.blue);
067        editor.requestFocusInWindow();
068        editor.setCaretPosition(pModel.getSelectionStart());
069        editor.moveCaretPosition(pModel.getSelectionEnd());
070    }
071
072}