/*

 * Copyright (c) 1998, 2006, 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

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 */

package sun.java2d.cmm;

import java.awt.color.ProfileDataException;

import java.util.Vector;

/**

 * A class to manage the deferral of CMM initialization of profile

 * data for internal ICC_Profile objects - i.e. when we "trust" that

 * the profile data is valid and we think it may not be needed.  An

 * example is the sRGB profile which gets loaded by any program doing

 * graphics, but which may not be needed if the program does not need

 * high quality color conversion.

 */

public class ProfileDeferralMgr {

    public static boolean deferring = true;

    private static Vector<ProfileActivator> aVector;

    /**

     * Records a ProfileActivator object whose activate method will

     * be called if the CMM needs to be activated.

     */

    public static void registerDeferral(ProfileActivator pa) {

        if (!deferring) {

            return;

        }

        if (aVector == null) {

            aVector = new Vector<ProfileActivator>(3, 3);

        }

        aVector.addElement(pa);

        return;

    }

    /**

     * Removes a ProfileActivator object from the vector of ProfileActivator

     * objects whose activate method will be called if the CMM needs to be

     * activated.

     */

    public static void unregisterDeferral(ProfileActivator pa) {

        if (!deferring) {

            return;

        }

        if (aVector == null) {

            return;

        }

        aVector.removeElement(pa);

        return;

    }

    /**

     * Removes a ProfileActivator object from the vector of ProfileActivator

     * objects whose activate method will be called if the CMM needs to be

     * activated.

     */

    public static void activateProfiles() {

        int i, n;

        deferring = false;

        if (aVector == null) {

            return;

        }

        n = aVector.size();

        for (ProfileActivator pa : aVector) {

            try {

                pa.activate();

            } catch (ProfileDataException e) {

                /*

                 * Ignore profile activation error for now:

                 * such exception is pssible due to absence

                 * or corruption of standard color profile.

                 * As for now we expect all profiles should

                 * be shiped with jre and presence of this

                 * exception is indication of some configuration

                 * problem in jre installation.

                 *

                 * NB: we still are greedy loading deferred profiles

                 * and load them all if any of them is needed.

                 * Therefore broken profile (if any) might be never used.

                 * If there will be attempt to use broken profile then

                 * it will result in CMMException.

                 */

            }

        }

        aVector.removeAllElements();

        aVector = null;

        return;

    }

}