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    <p><a href="http://puretech.siderakis.com/2012/05/custom-delimiter-in-gwt-places.html" rel="noreferrer">Here is how to customize the delimiter</a>, while using the standard GWT places. (PlaceHistoryMapper)</p> <p>Nothing else needs to be changed; it works with the standard way of using Places and Tokenizers.</p> <p>Insert into gwt.xml</p> <pre><code> &lt;generate-with class="com.google.gwt.place.rebind.CustomPlaceHistoryMapperGenerator"&gt; &lt;when-type-assignable class="com.google.gwt.place.shared.PlaceHistoryMapper" /&gt; &lt;/generate-with&gt; </code></pre> <p>Add CustomAbstractPlaceHistoryMapper</p> <pre><code>package com.siderakis.client.mvp; import com.google.gwt.place.impl.AbstractPlaceHistoryMapper; import com.google.gwt.place.shared.Place; import com.google.gwt.place.shared.PlaceTokenizer; public abstract class CustomAbstractPlaceHistoryMapper extends AbstractPlaceHistoryMapper { public final static String DELIMITER = "/"; public static class CustomPrefixAndToken extends PrefixAndToken { public CustomPrefixAndToken(String prefix, String token) { super(prefix, token); assert prefix != null &amp;&amp; !prefix.contains(DELIMITER); } @Override public String toString() { return (prefix.length() == 0) ? token : prefix + DELIMITER + token; } } @Override public Place getPlace(String token) { int colonAt = token.indexOf(DELIMITER); String initial; String rest; if (colonAt &gt;= 0) { initial = token.substring(0, colonAt); rest = token.substring(colonAt + 1); } else { initial = ""; rest = token; } PlaceTokenizer tokenizer = getTokenizer(initial); if (tokenizer != null) { return tokenizer.getPlace(rest); } return null; } } </code></pre> <p>Add CustomPlaceHistoryMapperGenerator</p> <pre><code>/* * Copyright 2010 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.place.rebind; import java.io.PrintWriter; import com.siderakis.client.mvp.CustomAbstractPlaceHistoryMapper; import com.siderakis.client.mvp.CustomAbstractPlaceHistoryMapper.CustomPrefixAndToken; import com.google.gwt.core.client.GWT; import com.google.gwt.core.ext.Generator; import com.google.gwt.core.ext.GeneratorContext; 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.JMethod; import com.google.gwt.place.shared.Place; import com.google.gwt.place.shared.PlaceTokenizer; import com.google.gwt.user.rebind.ClassSourceFileComposerFactory; import com.google.gwt.user.rebind.SourceWriter; /** * Generates implementations of * {@link com.google.gwt.place.shared.PlaceHistoryMapper PlaceHistoryMapper}. */ public class CustomPlaceHistoryMapperGenerator extends Generator { private PlaceHistoryGeneratorContext context; @Override public String generate(TreeLogger logger, GeneratorContext generatorContext, String interfaceName) throws UnableToCompleteException { context = PlaceHistoryGeneratorContext.create(logger, generatorContext.getTypeOracle(), interfaceName); if (context == null) { return null; } PrintWriter out = generatorContext.tryCreate(logger, context.packageName, context.implName); if (out != null) { generateOnce(generatorContext, context, out); } return context.packageName + "." + context.implName; } private void generateOnce(GeneratorContext generatorContext, PlaceHistoryGeneratorContext context, PrintWriter out) throws UnableToCompleteException { TreeLogger logger = context.logger.branch(TreeLogger.DEBUG, String.format( "Generating implementation of %s", context.interfaceType.getName())); ClassSourceFileComposerFactory f = new ClassSourceFileComposerFactory( context.packageName, context.implName); String superClassName = String.format("%s&lt;%s&gt;", CustomAbstractPlaceHistoryMapper.class.getSimpleName(), context.factoryType == null ? "Void" : context.factoryType.getName()); f.setSuperclass(superClassName); f.addImplementedInterface(context.interfaceType.getName()); f.addImport(CustomAbstractPlaceHistoryMapper.class.getName()); f.addImport(context.interfaceType.getQualifiedSourceName()); f.addImport(CustomAbstractPlaceHistoryMapper.class.getCanonicalName()); if (context.factoryType != null) { f.addImport(context.factoryType.getQualifiedSourceName()); } f.addImport(Place.class.getCanonicalName()); f.addImport(PlaceTokenizer.class.getCanonicalName()); f.addImport(CustomPrefixAndToken.class.getCanonicalName()); f.addImport(GWT.class.getCanonicalName()); SourceWriter sw = f.createSourceWriter(generatorContext, out); sw.println(); writeGetPrefixAndToken(context, sw); sw.println(); writeGetTokenizer(context, sw); sw.println(); sw.outdent(); sw.println("}"); generatorContext.commit(logger, out); } private void writeGetPrefixAndToken(PlaceHistoryGeneratorContext context, SourceWriter sw) throws UnableToCompleteException { sw.println("protected CustomPrefixAndToken getPrefixAndToken(Place newPlace) {"); sw.indent(); for (JClassType placeType : context.getPlaceTypes()) { String placeTypeName = placeType.getQualifiedSourceName(); String prefix = context.getPrefix(placeType); sw.println("if (newPlace instanceof " + placeTypeName + ") {"); sw.indent(); sw.println(placeTypeName + " place = (" + placeTypeName + ") newPlace;"); JMethod getter = context.getTokenizerGetter(prefix); if (getter != null) { sw.println(String.format("return new CustomPrefixAndToken(\"%s\", " + "factory.%s().getToken(place));", escape(prefix), getter.getName())); } else { sw.println(String.format( "PlaceTokenizer&lt;%s&gt; t = GWT.create(%s.class);", placeTypeName, context.getTokenizerType(prefix).getQualifiedSourceName())); sw.println(String.format("return new CustomPrefixAndToken(\"%s\", " + "t.getToken((%s) place));", escape(prefix), placeTypeName)); } sw.outdent(); sw.println("}"); } sw.println("return null;"); sw.outdent(); sw.println("}"); } private void writeGetTokenizer(PlaceHistoryGeneratorContext context, SourceWriter sw) throws UnableToCompleteException { sw.println("protected PlaceTokenizer getTokenizer(String prefix) {"); sw.indent(); for (String prefix : context.getPrefixes()) { JMethod getter = context.getTokenizerGetter(prefix); sw.println("if (\"" + escape(prefix) + "\".equals(prefix)) {"); sw.indent(); if (getter != null) { sw.println("return factory." + getter.getName() + "();"); } else { sw.println(String.format("return GWT.create(%s.class);", context.getTokenizerType(prefix).getQualifiedSourceName())); } sw.outdent(); sw.println("}"); } sw.println("return null;"); sw.outdent(); sw.println("}"); sw.outdent(); } } </code></pre>
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