/*
* 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.HashSet;
import java.util.Set;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.HTML;
import com.vaadin.client.ApplicationConfiguration;
import com.vaadin.client.ApplicationConnection;
import com.vaadin.client.ServerConnector;
import com.vaadin.client.VConsole;
import com.vaadin.client.ui.UnknownComponentConnector;
/**
* Optimized widgetset view panel of the debug window.
*
* @since 7.1.4
*/
public class OptimizedWidgetsetPanel extends FlowPanel {
/**
* Update the panel contents based on the connectors that have been used so
* far on this execution of the application.
*/
public void update() {
clear();
HTML h = new HTML("Getting used connectors");
add(h);
String s = "";
for (ApplicationConnection ac : ApplicationConfiguration
.getRunningApplications()) {
ApplicationConfiguration conf = ac.getConfiguration();
s += "<h1>Used connectors for " + conf.getServiceUrl() + "</h1>";
for (String connectorName : getUsedConnectorNames(conf)) {
s += connectorName + "<br/>";
}
s += "<h2>To make an optimized widgetset based on these connectors, do:</h2>";
s += "<h3>1. Add to your widgetset.gwt.xml file:</h2>";
s += "<textarea rows=\"3\" style=\"width:90%\">";
s += "<generate-with class=\"OptimizedConnectorBundleLoaderFactory\">\n";
s += " <when-type-assignable class=\"com.vaadin.client.metadata.ConnectorBundleLoader\" />\n";
s += "</generate-with>";
s += "</textarea>";
s += "<h3>2. Add the following java file to your project:</h2>";
s += "<textarea rows=\"5\" style=\"width:90%\">";
s += generateOptimizedWidgetSet(getUsedConnectorNames(conf));
s += "</textarea>";
s += "<h3>3. Recompile widgetset</h2>";
}
h.setHTML(s);
}
private Set<String> getUsedConnectorNames(
ApplicationConfiguration configuration) {
int tag = 0;
Set<String> usedConnectors = new HashSet<String>();
while (true) {
String serverSideClass = configuration
.getServerSideClassNameForTag(tag);
if (serverSideClass == null) {
break;
}
Class<? extends ServerConnector> connectorClass = configuration
.getConnectorClassByEncodedTag(tag);
if (connectorClass == null) {
break;
}
if (connectorClass != UnknownComponentConnector.class) {
usedConnectors.add(connectorClass.getName());
}
tag++;
if (tag > 10000) {
// Sanity check
VConsole.error("Search for used connector classes was forcefully terminated");
break;
}
}
return usedConnectors;
}
public String generateOptimizedWidgetSet(Set<String> usedConnectors) {
String s = "import java.util.HashSet;\n";
s += "import java.util.Set;\n";
s += "import com.google.gwt.core.ext.typeinfo.JClassType;\n";
s += "import com.vaadin.client.ui.ui.UIConnector;\n";
s += "import com.vaadin.server.widgetsetutils.ConnectorBundleLoaderFactory;\n";
s += "import com.vaadin.shared.ui.Connect.LoadStyle;\n\n";
s += "public class OptimizedConnectorBundleLoaderFactory extends\n";
s += " ConnectorBundleLoaderFactory {\n";
s += " private Set<String> eagerConnectors = new HashSet<String>();\n";
s += " {\n";
for (String c : usedConnectors) {
s += " eagerConnectors.add(" + c
+ ".class.getName());\n";
}
s += " }\n";
s += "\n";
s += " @Override\n";
s += " protected LoadStyle getLoadStyle(JClassType connectorType) {\n";
s += " if (eagerConnectors.contains(connectorType.getQualifiedBinaryName())) {\n";
s += " return LoadStyle.EAGER;\n";
s += " } else {\n";
s += " // Loads all other connectors immediately after the initial view has\n";
s += " // been rendered\n";
s += " return LoadStyle.DEFERRED;\n";
s += " }\n";
s += " }\n";
s += "}\n";
return s;
}
}