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/*
* 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.parsers;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.JClassType;
import com.google.gwt.uibinder.rebind.UiBinderWriter;
import com.google.gwt.uibinder.rebind.XMLElement;
/**
* Parses {@link com.google.gwt.user.client.ui.TabPanel} widgets.
*/
public class TabPanelParser implements ElementParser {
private static final String TAG_TAB = "Tab";
private static final String TAG_TABHTML = "TabHTML";
public void parse(XMLElement elem, String fieldName, JClassType type,
UiBinderWriter writer) throws UnableToCompleteException {
// Parse children.
for (XMLElement child : elem.consumeChildElements()) {
// TabPanel can only contain Tab elements.
String ns = child.getNamespaceUri();
String tagName = child.getLocalName();
if (!ns.equals(elem.getNamespaceUri())) {
writer.die("Invalid TabPanel child namespace: " + ns);
}
if (!tagName.equals(TAG_TAB)) {
writer.die("Invalid TabPanel child element: " + tagName);
}
// Get the caption, if any.
String tabCaption = "";
if (child.hasAttribute("text")) {
tabCaption = child.consumeAttribute("text");
}
// Get the single required child widget.
String tabHTML = null;
String childFieldName = null;
for (XMLElement tabChild : child.consumeChildElements()) {
if (tabChild.getLocalName().equals(TAG_TABHTML)) {
HtmlInterpreter interpreter =
HtmlInterpreter.newInterpreterForUiObject(writer, fieldName);
tabHTML = tabChild.consumeInnerHtml(interpreter);
} else {
if (childFieldName != null) {
writer.die("gwt:Tab may only have a single child widget");
}
childFieldName = writer.parseElementToField(tabChild);
}
}
if (tabHTML != null) {
writer.addStatement("%1$s.add(%2$s, \"%3$s\", true);", fieldName,
childFieldName, tabHTML);
} else {
writer.addStatement("%1$s.add(%2$s, \"%3$s\");", fieldName,
childFieldName, tabCaption);
}
}
}
}