com.google.gwt.uibinder.elementparsers.MenuItemParser Maven / Gradle / Ivy
/*
* Copyright 2009 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.uibinder.rebind.FieldWriter;
import com.google.gwt.uibinder.rebind.UiBinderWriter;
import com.google.gwt.uibinder.rebind.XMLElement;
import com.google.gwt.uibinder.rebind.XMLElement.Interpreter;
import com.google.gwt.user.client.ui.MenuBar;
import com.google.gwt.user.client.ui.MenuItem;
/**
* A parser for menu items.
*/
public class MenuItemParser implements ElementParser {
public void parse(final XMLElement elem, String fieldName, JClassType type,
final UiBinderWriter writer) throws UnableToCompleteException {
// Use special initializer for standard MenuItem,
// custom subclass should have default constructor.
if (MenuItem.class.getName().equals(type.getQualifiedSourceName())) {
writer.setFieldInitializerAsConstructor(fieldName, "\"\"",
"(com.google.gwt.user.client.Command) null");
}
final JClassType menuBarType = writer.getOracle().findType(
MenuBar.class.getCanonicalName());
class MenuBarInterpreter implements Interpreter {
FieldWriter menuBarField = null;
public Boolean interpretElement(XMLElement child)
throws UnableToCompleteException {
if (isMenuBar(child)) {
if (menuBarField != null) {
writer.die(child, "Only one MenuBar may be contained in a MenuItem");
}
menuBarField = writer.parseElementToField(child);
return true;
}
return false;
}
boolean isMenuBar(XMLElement child) throws UnableToCompleteException {
return menuBarType.isAssignableFrom(writer.findFieldType(child));
}
}
MenuBarInterpreter interpreter = new MenuBarInterpreter();
elem.consumeChildElements(interpreter);
if (interpreter.menuBarField != null) {
writer.genPropertySet(fieldName, "subMenu",
interpreter.menuBarField.getNextReference());
}
}
}