| /* |
| * Copyright 2014 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.resources.rg; |
| |
| import com.google.gwt.core.ext.TreeLogger; |
| import com.google.gwt.core.ext.UnableToCompleteException; |
| import com.google.gwt.core.ext.typeinfo.JMethod; |
| import com.google.gwt.resources.client.impl.CustomImageResourcePrototype; |
| import com.google.gwt.resources.ext.AbstractResourceGenerator; |
| import com.google.gwt.resources.ext.ResourceContext; |
| import com.google.gwt.resources.ext.ResourceGeneratorUtil; |
| import com.google.gwt.safehtml.shared.UriUtils; |
| import com.google.gwt.user.rebind.SourceWriter; |
| import com.google.gwt.user.rebind.StringSourceWriter; |
| |
| import java.net.URL; |
| |
| /** |
| * Generator for {@link CustomImageResource}. |
| */ |
| public class CustomImageResourceGenerator extends AbstractResourceGenerator { |
| |
| @Override |
| public String createAssignment(TreeLogger logger, ResourceContext context, JMethod method) |
| throws UnableToCompleteException { |
| URL[] resources = ResourceGeneratorUtil.findResources(logger, context, method); |
| |
| if (resources.length != 1) { |
| logger.log(TreeLogger.ERROR, "Exactly one resource must be specified", null); |
| throw new UnableToCompleteException(); |
| } |
| |
| URL resource = resources[0]; |
| |
| SourceWriter sw = new StringSourceWriter(); |
| sw.println("new " + CustomImageResourcePrototype.class.getName() + "("); |
| sw.indent(); |
| sw.println('"' + method.getName() + "\","); |
| // We don't care about it actually working, so just use the resource URL |
| sw.println(UriUtils.class.getName() + ".fromTrustedString(\"" + resource.toExternalForm() + "\")"); |
| sw.outdent(); |
| sw.print(")"); |
| |
| return sw.toString(); |
| } |
| } |