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/*
 * Copyright 2008 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.uibinder.elementparsers;

import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.uibinder.rebind.UiBinderWriter;
import com.google.gwt.uibinder.rebind.XMLElement;
import com.google.gwt.uibinder.rebind.messages.AttributeMessage;
import com.google.gwt.uibinder.rebind.messages.MessagesWriter;

/**
 * Examines each element for child <ui:attr/> elements, and replaces the
 * corresponding attributes of the examinee with references to the translatable
 * messages created.
 * 

* That is, when examining element foo in *

 *   <foo bar="baz">
 *     <ui:attr name="baz">
 *   </foo>
* cosume the ui:attr element, and declare a method on the Messages interface * with {@literal @}Default("baz") */ class AttributeMessageInterpreter implements XMLElement.Interpreter { private final UiBinderWriter writer; public AttributeMessageInterpreter(UiBinderWriter writer) { this.writer = writer; } public String interpretElement(XMLElement elem) throws UnableToCompleteException { MessagesWriter messages = writer.getMessages(); for (AttributeMessage am : messages.consumeAttributeMessages(elem)) { String message = am.getMessageUnescaped(); if (!writer.useSafeHtmlTemplates()) { /* * We have to do our own simple escaping to if the SafeHtml integration * is off */ message += ".replaceAll(\"&\", \"&\").replaceAll(\"'\", \"'\")"; } elem.setAttribute(am.getAttribute(), writer.tokenForStringExpression(message)); } /* * Return null because we don't want to replace the dom element with any * particular string (though we may have consumed its id or ui:field) */ return null; } }




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