/*

 * Copyright (c) 2003, 2004, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package sun.swing.plaf.synth;

import javax.swing.plaf.synth.*;

import java.util.*;

import java.util.regex.*;

/**

 * <b>WARNING:</b> This class is an implementation detail and is only

 * public so that it can be used by two packages. You should NOT consider

 * this public API.

 * <p>

 * StyleAssociation is used to lookup a style for a particular

 * component (or region).

 *

 * @author Scott Violet

 */

public class StyleAssociation {

    /**

     * The style

     */

    private SynthStyle _style;

    /**

     * Pattern used for matching.

     */

    private Pattern _pattern;

    /**

     * Matcher used for testing if path matches that of pattern.

     */

    private Matcher _matcher;

    /**

     * Identifier for this association.

     */

    private int _id;

    /**

     * Returns a StyleAssociation that can be used to determine if

     * a particular string matches the returned association.

     */

    public static StyleAssociation createStyleAssociation(

        String text, SynthStyle style)

        throws PatternSyntaxException {

        return createStyleAssociation(text, style, 0);

    }

    /**

     * Returns a StyleAssociation that can be used to determine if

     * a particular string matches the returned association.

     */

    public static StyleAssociation createStyleAssociation(

        String text, SynthStyle style, int id)

        throws PatternSyntaxException {

        return new StyleAssociation(text, style, id);

    }

    private StyleAssociation(String text, SynthStyle style, int id)

                 throws PatternSyntaxException {

        _style = style;

        _pattern = Pattern.compile(text);

        _id = id;

    }

    /**

     * Returns the developer specified identifier for this association, will

     * be <code>0</code> if an identifier was not specified when this

     * <code>StyleAssociation</code> was created.

     */

    public int getID() {

        return _id;

    }

    /**

     * Returns true if this <code>StyleAssociation</code> matches the

     * passed in CharSequence.

     *

     * @return true if this <code>StyleAssociation</code> matches the

     * passed in CharSequence.if this StyleAssociation.

     */

    public synchronized boolean matches(CharSequence path) {

        if (_matcher == null) {

            _matcher = _pattern.matcher(path);

        }

        else {

            _matcher.reset(path);

        }

        return _matcher.matches();

    }

    /**

     * Returns the text used in matching the string.

     *

     * @return the text used in matching the string.

     */

    public String getText() {

        return _pattern.pattern();

    }

    /**

     * Returns the style this association is mapped to.

     *

     * @return the style this association is mapped to.

     */

    public SynthStyle getStyle() {

        return _style;

    }

}