/*
 *                 Sun Public License Notice
 *
 * The contents of this file are subject to  the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 *
 * The Original Code is NetBeans. The Initial Developer of the Original
 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2003 Sun
 * Microsystems, Inc. All Rights Reserved.
 */
package org.netbeans.modules.registry.mergedctx;

import org.netbeans.api.registry.ContextException;
import org.netbeans.spi.registry.BasicContext;

final class MaskUtils {
    private static final String MASK_EXTENSION = "_mergehidden";//NOI18N


    static boolean existMaskForCtx(/*MergedDelegates delegates*/final BasicContext activeCtx, final String subcontextName) {
        //final BasicContext activeCtx = delegates.getActiveDelegate(false);
        if (activeCtx == null) return false;
        return (activeCtx.getSubcontextNames().contains(subcontextName + MASK_EXTENSION));
    }

    static boolean existMaskForBinding(final BasicContext activeCtx, final String bindingName) {
        if (activeCtx == null) return false;
        return (activeCtx.getBindingNames().contains((bindingName + MASK_EXTENSION)));//lookupObject(bindingName + MASK_EXTENSION) != null);
    }

    static boolean existMaskForAttributes(final BasicContext activeCtx, final String bindingName, final String attributeName) {
        if (activeCtx == null) return false;
        return (activeCtx.getAttributeNames(bindingName).contains(attributeName + MASK_EXTENSION));        
    }

    static boolean isMaskForCtxName(final String contextName) {
        return contextName.endsWith(MASK_EXTENSION);
    }

    static boolean isMaskForBindingName(final String bindingName) {
        return bindingName.endsWith(MASK_EXTENSION);
    }

    static boolean isMaskForAttributeName(final String attributeName) {
        return attributeName.endsWith(MASK_EXTENSION);

    }

    static void createMaskForCtx(final BasicContext activeCtx, final String subcontextName) throws ContextException {
        if (!existMaskForCtx(activeCtx, subcontextName))
            activeCtx.createSubcontext(subcontextName + MASK_EXTENSION);
    }

    static void createMaskForBinding(final BasicContext activeCtx, final String bindingName) throws ContextException {
        if (!existMaskForBinding(activeCtx, bindingName))
            activeCtx.bindObject(bindingName + MASK_EXTENSION, "mask"); //NOI18N
    }

    static void createMaskForAttributes(final BasicContext activeCtx, final String bindingName, final String attributeName) throws ContextException {
        if (!existMaskForAttributes(activeCtx, bindingName, attributeName))
            activeCtx.setAttribute(bindingName, attributeName + MASK_EXTENSION, "mask");//NOI18N
    }

    static void deleteMaskForCtx(final BasicContext activeCtx, final String subcontextName) throws ContextException {
        if (activeCtx == null) return;

        if (existMaskForCtx(activeCtx, subcontextName))
            activeCtx.destroySubcontext(subcontextName + MASK_EXTENSION);
    }

    static void deleteMaskForBinding(final BasicContext activeCtx, final String bindingName) throws ContextException {
        if (activeCtx == null) return;

        if (existMaskForBinding(activeCtx, bindingName))
            activeCtx.bindObject(bindingName + MASK_EXTENSION, null);
    }

    static void deleteMaskForAttributes(final BasicContext activeCtx, final String bindingName, final String attributeName) throws ContextException {
        if (activeCtx == null) return;

        if (existMaskForAttributes(activeCtx, bindingName, attributeName))
            activeCtx.setAttribute(bindingName, attributeName + MASK_EXTENSION, null);
    }

}