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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.MessageWriter;
import com.google.gwt.uibinder.rebind.messages.MessagesWriter;
import com.google.gwt.uibinder.rebind.messages.PlaceholderInterpreter;

/**
 * The interpreter of choice for calls to {@link XMLElement#consumeInnerText}.
 * It handles <m:msg/> elements, replacing them with references to Messages
 * interface calls.
 * 

* Calls to {@link XMLElement#consumeInnerHtml} should instead use * {@link HtmlInterpreter} */ public class TextInterpreter implements XMLElement.Interpreter { private final UiBinderWriter writer; public TextInterpreter(UiBinderWriter writer) { this.writer = writer; } public String interpretElement(XMLElement elem) throws UnableToCompleteException { MessagesWriter messages = writer.getMessages(); if (messages.isMessage(elem)) { String messageInvocation = consumeAsTextMessage(elem, messages); return writer.tokenForStringExpression(messageInvocation); } return new UiTextInterpreter(writer).interpretElement(elem); } private String consumeAsTextMessage(XMLElement elem, MessagesWriter messages) throws UnableToCompleteException { if (!elem.hasChildNodes()) { writer.die(elem, "Empty message"); } MessageWriter message = messages.newMessage(elem); PlaceholderInterpreter interpreter = new TextPlaceholderInterpreter(writer, message); message.setDefaultMessage(elem.consumeInnerText(interpreter)); return messages.declareMessage(message); } }





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