/*
* Copyright 2000-2014 Vaadin Ltd.
*
* 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.vaadin.client.debug.internal;
import java.util.logging.Handler;
import java.util.logging.Level;
import java.util.logging.LogRecord;
import com.google.gwt.logging.client.TextLogFormatter;
import com.google.gwt.user.client.ui.Widget;
import com.vaadin.client.ApplicationConfiguration;
import com.vaadin.client.ApplicationConnection;
import com.vaadin.client.ui.VNotification;
/**
* Log message handler that shows big red notification for {@link Level#SEVERE}
* messages that have a throwable.
*
* @since 7.1
* @author Vaadin Ltd
*/
public class ErrorNotificationHandler extends Handler {
public ErrorNotificationHandler() {
setLevel(Level.SEVERE);
setFormatter(new TextLogFormatter(true) {
@Override
protected String getRecordInfo(LogRecord event, String newline) {
return "";
}
});
}
@Override
public void publish(LogRecord record) {
if (!isLoggable(record) || record.getThrown() == null) {
return;
}
try {
String exceptionText = getFormatter().format(record);
Widget owner = null;
if (!ApplicationConfiguration.getRunningApplications().isEmpty()) {
/*
* Make a wild guess and use the first available
* ApplicationConnection. This is better than than leaving the
* exception completely unstyled...
*/
ApplicationConnection connection = ApplicationConfiguration
.getRunningApplications().get(0);
owner = connection.getUIConnector().getWidget();
}
VNotification
.createNotification(VNotification.DELAY_FOREVER, owner)
.show("<h1>Uncaught client side exception</h1><br />"
+ exceptionText, VNotification.CENTERED, "error");
} catch (Exception e2) {
// Just swallow this exception
}
}
@Override
public void close() {
// Nothing to do
}
@Override
public void flush() {
// Nothing todo
}
}