/*

 * Copyright (c) 2008 Sun Microsystems, Inc.  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.

 *

 * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

/*

 * @test

 * @summary verify that the embedding values processed by the bidi code use negative values to

 * indicate overrides, rather than using bit 7.  Also tests Bidi without loading awt classes to

 * confirm that Bidi can be used without awt. Verify that embedding level 0 is properly mapped

 * to the base embedding level.

 */

import java.awt.Color;

import java.awt.Frame;

import java.awt.font.TextAttribute;

import java.text.AttributedString;

import java.text.Bidi;

public class BidiEmbeddingTest {

    public static void main(String[] args) {

        // to regress embedding test against old fix, call with an arg.  A window will pop

        // up causing awt lib to be loaded so the vm won't die with the unsatisfied link error.

        if (args.length > 0) {

            Frame f = new Frame();

            f.setSize(300, 300);

            f.setBackground(Color.white);

            f.show();

        }

        test1();

        test2();

    }

    static void test1() {

        String target = "BACK WARDS";

        String str = "If this text is >" + target + "< the test passed.";

        int start = str.indexOf(target);

        int limit = start + target.length();

        System.out.println("start: " + start + " limit: " + limit);

        AttributedString astr = new AttributedString(str);

        astr.addAttribute(TextAttribute.BIDI_EMBEDDING,

                         new Integer(-1),

                         start,

                         limit);

        Bidi bidi = new Bidi(astr.getIterator());

        for (int i = 0; i < bidi.getRunCount(); ++i) {

            System.out.println("run " + i +

                               " from " + bidi.getRunStart(i) +

                               " to " + bidi.getRunLimit(i) +

                               " at level " + bidi.getRunLevel(i));

        }

        System.out.println(bidi);

        byte[] embs = new byte[str.length() + 3];

        for (int i = start + 1; i < limit + 1; ++i) {

            embs[i] = -1;

        }

        Bidi bidi2 = new Bidi(str.toCharArray(), 0, embs, 1, str.length(), Bidi.DIRECTION_DEFAULT_LEFT_TO_RIGHT);

        for (int i = 0; i < bidi2.getRunCount(); ++i) {

            System.out.println("run " + i +

                               " from " + bidi2.getRunStart(i) +

                               " to " + bidi2.getRunLimit(i) +

                               " at level " + bidi2.getRunLevel(i));

        }

        if (bidi.getRunCount() != 3 || bidi2.getRunCount() != 3) {

            throw new Error("Bidi run count incorrect");

        }

    }

    // make sure BIDI_EMBEDDING values of 0 are mapped to base run direction, instead of flagging an error.

    static void test2() {

        String target = "BACK WARDS";

        String str = "If this text is >" + target + "< the test passed.";

        int length = str.length();

        int start = str.indexOf(target);

        int limit = start + target.length();

        System.out.println("start: " + start + " limit: " + limit);

        AttributedString astr = new AttributedString(str);

        astr.addAttribute(TextAttribute.RUN_DIRECTION, TextAttribute.RUN_DIRECTION_RTL);

        astr.addAttribute(TextAttribute.BIDI_EMBEDDING,

                         new Integer(-3),

                         start,

                         limit);

        Bidi bidi = new Bidi(astr.getIterator());

        for (int i = 0; i < bidi.getRunCount(); ++i) {

            System.out.println("run " + i +

                               " from " + bidi.getRunStart(i) +

                               " to " + bidi.getRunLimit(i) +

                               " at level " + bidi.getRunLevel(i));

        }

        if (bidi.getRunCount() != 6) { // runs of spaces and angles at embedding bound,s and final period, each get level 1

            throw new Error("Bidi embedding processing failed");

        }

    }

}