com.google.gwt.uibinder.elementparsers.MenuBarParser Maven / Gradle / Ivy
/*
* Copyright 2007 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.user.client.ui.MenuBar;
import com.google.gwt.user.client.ui.MenuItem;
import com.google.gwt.user.client.ui.MenuItemSeparator;
/**
* Parses {@link com.google.gwt.user.client.ui.MenuBar} widgets.
*/
public class MenuBarParser implements ElementParser {
static final String BAD_CHILD = "Only MenuItem or MenuItemSeparator subclasses are valid children";
public void parse(XMLElement elem, String fieldName, JClassType type,
UiBinderWriter writer) throws UnableToCompleteException {
// Generate instantiation (Vertical MenuBars require a ctor param).
if (MenuBar.class.getName().equals(type.getQualifiedSourceName())) {
if (elem.hasAttribute("vertical")) {
String vertical = elem.consumeBooleanAttribute("vertical");
writer.setFieldInitializerAsConstructor(fieldName, vertical);
}
}
// Prepare base types.
JClassType itemType = writer.getOracle().findType(MenuItem.class.getName());
JClassType separatorType = writer.getOracle().findType(
MenuItemSeparator.class.getName());
// Parse children.
for (XMLElement child : elem.consumeChildElements()) {
JClassType childType = writer.findFieldType(child);
// MenuItem+
if (itemType.isAssignableFrom(childType)) {
FieldWriter childField = writer.parseElementToField(child);
writer.addStatement("%1$s.addItem(%2$s);", fieldName, childField.getNextReference());
continue;
}
// MenuItemSeparator+
if (separatorType.isAssignableFrom(childType)) {
FieldWriter childField = writer.parseElementToField(child);
writer.addStatement("%1$s.addSeparator(%2$s);", fieldName, childField.getNextReference());
continue;
}
// Fail
writer.die(child, BAD_CHILD);
}
}
}