131 lines
4.0 KiB
Java
131 lines
4.0 KiB
Java
/*
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* Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package java.beans;
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import com.sun.beans.finder.BeanInfoFinder;
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import com.sun.beans.finder.PropertyEditorFinder;
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import java.awt.GraphicsEnvironment;
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import java.util.Map;
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import java.util.WeakHashMap;
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/**
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* The {@code ThreadGroupContext} is an application-dependent
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* context referenced by the specific {@link ThreadGroup}.
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* This is a replacement for the {@link sun.awt.AppContext}.
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*
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* @author Sergey Malenkov
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*/
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final class ThreadGroupContext {
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private static final WeakIdentityMap<ThreadGroupContext> contexts = new WeakIdentityMap<ThreadGroupContext>() {
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protected ThreadGroupContext create(Object key) {
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return new ThreadGroupContext();
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}
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};
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/**
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* Returns the appropriate {@code ThreadGroupContext} for the caller,
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* as determined by its {@code ThreadGroup}.
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*
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* @return the application-dependent context
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*/
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static ThreadGroupContext getContext() {
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return contexts.get(Thread.currentThread().getThreadGroup());
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}
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private volatile boolean isDesignTime;
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private volatile Boolean isGuiAvailable;
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private Map<Class<?>, BeanInfo> beanInfoCache;
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private BeanInfoFinder beanInfoFinder;
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private PropertyEditorFinder propertyEditorFinder;
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private ThreadGroupContext() {
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}
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boolean isDesignTime() {
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return this.isDesignTime;
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}
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void setDesignTime(boolean isDesignTime) {
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this.isDesignTime = isDesignTime;
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}
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boolean isGuiAvailable() {
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Boolean isGuiAvailable = this.isGuiAvailable;
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return (isGuiAvailable != null)
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? isGuiAvailable.booleanValue()
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: !GraphicsEnvironment.isHeadless();
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}
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void setGuiAvailable(boolean isGuiAvailable) {
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this.isGuiAvailable = Boolean.valueOf(isGuiAvailable);
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}
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BeanInfo getBeanInfo(Class<?> type) {
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return (this.beanInfoCache != null)
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? this.beanInfoCache.get(type)
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: null;
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}
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BeanInfo putBeanInfo(Class<?> type, BeanInfo info) {
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if (this.beanInfoCache == null) {
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this.beanInfoCache = new WeakHashMap<>();
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}
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return this.beanInfoCache.put(type, info);
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}
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void removeBeanInfo(Class<?> type) {
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if (this.beanInfoCache != null) {
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this.beanInfoCache.remove(type);
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}
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}
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void clearBeanInfoCache() {
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if (this.beanInfoCache != null) {
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this.beanInfoCache.clear();
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}
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}
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synchronized BeanInfoFinder getBeanInfoFinder() {
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if (this.beanInfoFinder == null) {
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this.beanInfoFinder = new BeanInfoFinder();
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}
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return this.beanInfoFinder;
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}
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synchronized PropertyEditorFinder getPropertyEditorFinder() {
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if (this.propertyEditorFinder == null) {
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this.propertyEditorFinder = new PropertyEditorFinder();
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}
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return this.propertyEditorFinder;
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}
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}
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