/*
 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 */

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;
 }
}