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/*******************************************************************************
* Copyright (c) 2011 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
******************************************************************************/
package org.eclipse.equinox.bidi.advanced;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.equinox.bidi.STextTypeHandlerFactory;
import org.eclipse.equinox.bidi.custom.STextTypeHandler;
import org.eclipse.equinox.bidi.internal.STextImpl;
final public class STextExpertFactory {
/**
* The default set of separators used to segment a string: dot, colon, slash, backslash.
*/
private static final String defaultSeparators = ".:/\\"; //$NON-NLS-1$
static private Map sharedDefaultExperts = new HashMap(); // String type -> expert
static private Map sharedExperts = new HashMap(); // String type -> map of { environment -> expert }
static private ISTextExpert defaultExpert;
private STextExpertFactory() {
// prevents instantiation
}
static public ISTextExpert getExpert() {
if (defaultExpert == null) {
STextTypeHandler handler = new STextTypeHandler(defaultSeparators);
defaultExpert = new STextImpl(handler, STextEnvironment.DEFAULT, null);
}
return defaultExpert;
}
static public ISTextExpert getExpert(String type) {
ISTextExpert expert;
synchronized (sharedDefaultExperts) {
expert = (ISTextExpert) sharedDefaultExperts.get(type);
if (expert == null) {
STextTypeHandler handler = STextTypeHandlerFactory.getHandler(type);
if (handler == null)
return null;
expert = new STextImpl(handler, STextEnvironment.DEFAULT, null);
sharedDefaultExperts.put(type, expert);
}
}
return expert;
}
static public ISTextExpert getExpert(String type, STextEnvironment environment) {
ISTextExpert expert;
synchronized (sharedExperts) {
Map experts = (Map) sharedExperts.get(type);
if (experts == null) {
experts = new HashMap(); // environment -> expert
sharedExperts.put(type, experts);
}
expert = (ISTextExpert) experts.get(environment);
if (expert == null) {
STextTypeHandler handler = STextTypeHandlerFactory.getHandler(type);
if (handler == null)
return null;
expert = new STextImpl(handler, environment, null);
experts.put(type, expert);
}
}
return expert;
}
static public ISTextExpert getExpert(STextTypeHandler handler, STextEnvironment environment) {
return new STextImpl(handler, environment, STextState.createState());
}
static public ISTextExpertStateful getPrivateExpert(String type) {
return getPrivateExpert(type, STextEnvironment.DEFAULT);
}
static public ISTextExpertStateful getPrivateExpert(String type, STextEnvironment environment) {
STextTypeHandler handler = STextTypeHandlerFactory.getHandler(type);
if (handler == null)
return null;
return new STextImpl(handler, environment, STextState.createState());
}
}
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