| /* |
| * 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.useragent.rebind; |
| |
| import com.google.gwt.core.ext.BadPropertyValueException; |
| import com.google.gwt.core.ext.Generator; |
| import com.google.gwt.core.ext.Generator.RunsLocal; |
| 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 com.google.gwt.user.rebind.ClassSourceFileComposerFactory; |
| import com.google.gwt.user.rebind.SourceWriter; |
| |
| import java.io.PrintWriter; |
| import java.util.Locale; |
| |
| /** |
| * Generator for {@link com.google.gwt.useragent.client.UserAgent}. |
| */ |
| @RunsLocal(requiresProperties = {"user.agent"}) |
| public class UserAgentGenerator extends Generator { |
| static final String PROPERTY_USER_AGENT = "user.agent"; |
| |
| @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(); |
| |
| 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(Locale.ROOT) |
| + 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 native String getRuntimeValue() /*-{"); |
| sw.indent(); |
| UserAgentPropertyGenerator.writeUserAgentPropertyJavaScript(sw, |
| selectionProperty.getPossibleValues(), null); |
| 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(); |
| } |
| } |