com.google.gwt.uibinder.elementparsers.TextInterpreter Maven / Gradle / Ivy
/*
* 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(elem, 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);
}
}