/*

 * Copyright (c) 2011, 2013, 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 java.beans;

import com.sun.beans.finder.BeanInfoFinder;

import com.sun.beans.finder.PropertyEditorFinder;

import java.awt.GraphicsEnvironment;

import java.util.Map;

import java.util.WeakHashMap;

/**

 * The {@code ThreadGroupContext} is an application-dependent

 * context referenced by the specific {@link ThreadGroup}.

 * This is a replacement for the {@link sun.awt.AppContext}.

 *

 * @author  Sergey Malenkov

 */

final class ThreadGroupContext {

    private static final WeakIdentityMap<ThreadGroupContext> contexts = new WeakIdentityMap<ThreadGroupContext>() {

        protected ThreadGroupContext create(Object key) {

            return new ThreadGroupContext();

        }

    };

    /**

     * Returns the appropriate {@code ThreadGroupContext} for the caller,

     * as determined by its {@code ThreadGroup}.

     *

     * @return  the application-dependent context

     */

    static ThreadGroupContext getContext() {

        return contexts.get(Thread.currentThread().getThreadGroup());

    }

    private volatile boolean isDesignTime;

    private volatile Boolean isGuiAvailable;

    private Map<Class<?>, BeanInfo> beanInfoCache;

    private BeanInfoFinder beanInfoFinder;

    private PropertyEditorFinder propertyEditorFinder;

    private ThreadGroupContext() {

    }

    boolean isDesignTime() {

        return this.isDesignTime;

    }

    void setDesignTime(boolean isDesignTime) {

        this.isDesignTime = isDesignTime;

    }

    boolean isGuiAvailable() {

        Boolean isGuiAvailable = this.isGuiAvailable;

        return (isGuiAvailable != null)

                ? isGuiAvailable.booleanValue()

                : !GraphicsEnvironment.isHeadless();

    }

    void setGuiAvailable(boolean isGuiAvailable) {

        this.isGuiAvailable = Boolean.valueOf(isGuiAvailable);

    }

    BeanInfo getBeanInfo(Class<?> type) {

        return (this.beanInfoCache != null)

                ? this.beanInfoCache.get(type)

                : null;

    }

    BeanInfo putBeanInfo(Class<?> type, BeanInfo info) {

        if (this.beanInfoCache == null) {

            this.beanInfoCache = new WeakHashMap<>();

        }

        return this.beanInfoCache.put(type, info);

    }

    void removeBeanInfo(Class<?> type) {

        if (this.beanInfoCache != null) {

            this.beanInfoCache.remove(type);

        }

    }

    void clearBeanInfoCache() {

        if (this.beanInfoCache != null) {

            this.beanInfoCache.clear();

        }

    }

    synchronized BeanInfoFinder getBeanInfoFinder() {

        if (this.beanInfoFinder == null) {

            this.beanInfoFinder = new BeanInfoFinder();

        }

        return this.beanInfoFinder;

    }

    synchronized PropertyEditorFinder getPropertyEditorFinder() {

        if (this.propertyEditorFinder == null) {

            this.propertyEditorFinder = new PropertyEditorFinder();

        }

        return this.propertyEditorFinder;

    }

}