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/*
* Copyright 2000-2018 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.util;
import java.util.LinkedList;
import com.vaadin.server.ClientConnector;
import com.vaadin.ui.Component;
/**
* Provides various helper methods for connectors. Meant for internal use.
*
* @since 7.1
* @author Vaadin Ltd
*/
public class ConnectorHelper {
/**
* Creates a string containing debug info for the connector.
*
* @since 7.1
* @param connector
* The connector to print debug info about
* @return A string with debug information
*/
public static String getDebugInformation(ClientConnector connector) {
StringBuilder sb = new StringBuilder();
sb.append("*** Debug details of a connector: *** \n");
sb.append("Type: ");
sb.append(connector.getClass().getName());
sb.append("\nId:");
sb.append(connector.getConnectorId());
if (connector instanceof Component) {
Component component = (Component) connector;
if (component.getCaption() != null) {
sb.append("\nCaption:");
sb.append(component.getCaption());
}
}
writeHierarchyInformation(connector, sb);
return sb.toString();
}
/**
* Creates a string containing hierarchy information for the connector.
*
* @since 7.1
* @param connector
* The connector to get hierarchy information for
* @param builder
* The StringBuilder where the information should be written
*/
public static void writeHierarchyInformation(ClientConnector connector,
StringBuilder builder) {
LinkedList<ClientConnector> h = new LinkedList<>();
h.add(connector);
ClientConnector parent = connector.getParent();
while (parent != null) {
h.addFirst(parent);
parent = parent.getParent();
}
builder.append("\nConnector hierarchy:\n");
int l = 0;
for (ClientConnector connector2 : h) {
if (l != 0) {
builder.append("\n");
for (int i = 0; i < l; i++) {
builder.append(" ");
}
}
l++;
Class<? extends ClientConnector> connectorClass = connector2
.getClass();
Class<?> topClass = connectorClass;
while (topClass.getEnclosingClass() != null) {
topClass = topClass.getEnclosingClass();
}
builder.append(connectorClass.getName());
builder.append('(');
builder.append(topClass.getSimpleName());
builder.append(".java:1)");
}
}
private ConnectorHelper() {
}
}
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