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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.
/**
 * 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.
/**
     * 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.
/**
     * 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.
/**
     * 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;
    }

}