/*
* Copyright 2009 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.gwt.language.client.transliteration.text;
import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.GWT.UncaughtExceptionHandler;
/**
* Callback for transliteration results. onCallback() method must be
* overridden by clients.
*/
public abstract class TransliterationCallback {
/**
* This must be overridden by the client to deal with asynchronous feedback
* containing transliteration results.
*
* @param result the result of a transliteration request.
*/
protected abstract void onCallback(TransliterationResult result);
/**
* This wraps onCallback method and provides a framework for catching
* exceptions in callbacks.
*
* @param result the result of a transliteration request.
*/
public final void onCallbackWrapper(TransliterationResult result) {
UncaughtExceptionHandler exceptionHandler = GWT.getUncaughtExceptionHandler();
if (exceptionHandler != null) {
try {
onCallback(result);
} catch (Exception e) {
exceptionHandler.onUncaughtException(e);
}
} else {
onCallback(result);
}
}
}