/*
* 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.uibinder.elementparsers;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.JClassType;
import com.google.gwt.core.ext.typeinfo.JType;
import com.google.gwt.core.ext.typeinfo.TypeOracle;
import com.google.gwt.resources.client.ImageResource;
import com.google.gwt.uibinder.rebind.UiBinderWriter;
import com.google.gwt.uibinder.rebind.XMLElement;
/**
* Custom parsing of Image widgets. Sets ImageResource via constructor, because
* {@link com.google.gwt.user.client.ui.Image#setResource Image.setResource}
* clobbers most setter values.
*/
public class ImageParser implements ElementParser {
public void parse(XMLElement elem, String fieldName, JClassType type,
UiBinderWriter writer) throws UnableToCompleteException {
if (hasImageResourceConstructor(writer.getOracle(), type)) {
String resource = elem.consumeImageResourceAttribute("resource");
if (null != resource) {
writer.setFieldInitializerAsConstructor(fieldName, resource);
}
}
}
private boolean hasImageResourceConstructor(TypeOracle typeOracle,
JClassType type) {
JType imageResourceType = typeOracle.findType(ImageResource.class.getName());
return type.findConstructor(new JType[] {imageResourceType}) != null;
}
}