com.google.gwt.user.rebind.UserAgentGenerator Maven / Gradle / Ivy
/*
* Copyright 2011 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.user.rebind;
import com.google.gwt.core.ext.BadPropertyValueException;
import com.google.gwt.core.ext.ConfigurationProperty;
import com.google.gwt.core.ext.Generator;
import com.google.gwt.core.ext.GeneratorContext;
import com.google.gwt.core.ext.PropertyOracle;
import com.google.gwt.core.ext.SelectionProperty;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.JClassType;
import com.google.gwt.core.ext.typeinfo.NotFoundException;
import com.google.gwt.core.ext.typeinfo.TypeOracle;
import java.io.PrintWriter;
/**
* Generator for {@link com.google.gwt.user.client.UserAgentAsserter}.
*/
public class UserAgentGenerator extends Generator {
static final String PROPERTY_USER_AGENT = "user.agent";
static final String PROPERTY_USER_AGENT_RUNTIME_WARNING = "user.agent.runtimeWarning";
@Override
public String generate(TreeLogger logger, GeneratorContext context, String typeName)
throws UnableToCompleteException {
TypeOracle typeOracle = context.getTypeOracle();
JClassType userType;
try {
userType = typeOracle.getType(typeName);
} catch (NotFoundException e) {
logger.log(TreeLogger.ERROR, "Unable to find metadata for type: " + typeName, e);
throw new UnableToCompleteException();
}
String packageName = userType.getPackage().getName();
String className = userType.getName();
className = className.replace('.', '_');
if (userType.isInterface() == null) {
logger.log(TreeLogger.ERROR, userType.getQualifiedSourceName() + " is not an interface", null);
throw new UnableToCompleteException();
}
PropertyOracle propertyOracle = context.getPropertyOracle();
boolean userAgentRuntimeWarning = true;
try {
ConfigurationProperty property = propertyOracle.getConfigurationProperty(PROPERTY_USER_AGENT_RUNTIME_WARNING);
userAgentRuntimeWarning = Boolean.valueOf(property.getValues().get(0));
} catch (BadPropertyValueException e) {
logger.log(TreeLogger.WARN, "Unable to find value for '"
+ PROPERTY_USER_AGENT_RUNTIME_WARNING + "'", e);
}
String userAgentValue;
SelectionProperty selectionProperty;
try {
selectionProperty = propertyOracle.getSelectionProperty(logger, PROPERTY_USER_AGENT);
userAgentValue = selectionProperty.getCurrentValue();
} catch (BadPropertyValueException e) {
logger.log(TreeLogger.ERROR, "Unable to find value for '" + PROPERTY_USER_AGENT + "'", e);
throw new UnableToCompleteException();
}
String userAgentValueInitialCap = userAgentValue.substring(0, 1).toUpperCase()
+ userAgentValue.substring(1);
className = className + "Impl" + userAgentValueInitialCap;
ClassSourceFileComposerFactory composerFactory = new ClassSourceFileComposerFactory(
packageName, className);
composerFactory.addImplementedInterface(userType.getQualifiedSourceName());
PrintWriter pw = context.tryCreate(logger, packageName, className);
if (pw != null) {
SourceWriter sw = composerFactory.createSourceWriter(context, pw);
sw.println();
sw.println("public boolean getUserAgentRuntimeWarning() {");
sw.indent();
sw.println("return " + userAgentRuntimeWarning + ";");
sw.outdent();
sw.println("}");
sw.println();
sw.println();
sw.println("public native String getRuntimeValue() /*-{");
sw.indent();
UserAgentPropertyGenerator.writeUserAgentPropertyJavaScript(sw,
selectionProperty.getPossibleValues());
sw.outdent();
sw.println("}-*/;");
sw.println();
sw.println();
sw.println("public String getCompileTimeValue() {");
sw.indent();
sw.println("return \"" + userAgentValue.trim() + "\";");
sw.outdent();
sw.println("}");
sw.commit(logger);
}
return composerFactory.getCreatedClassName();
}
}