/*
* Copyright 2010 IT Mill Ltd.
*
* 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.vaadin.terminal.gwt.client;
import java.util.Iterator;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Element;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.HTML;
import com.vaadin.terminal.gwt.client.ui.VOverlay;
public class VErrorMessage extends FlowPanel {
public static final String CLASSNAME = "v-errormessage";
public VErrorMessage() {
super();
setStyleName(CLASSNAME);
}
public void updateFromUIDL(UIDL uidl) {
clear();
if (uidl.getChildCount() == 0) {
add(new HTML(" "));
} else {
for (final Iterator<?> it = uidl.getChildIterator(); it.hasNext();) {
final Object child = it.next();
if (child instanceof String) {
final String errorMessage = (String) child;
add(new HTML(errorMessage));
} else {
try {
final VErrorMessage childError = new VErrorMessage();
childError.updateFromUIDL((UIDL) child);
add(childError);
} catch (Exception e) {
// TODO XML type error, check if this can even happen
// anymore??
final UIDL.XML xml = (UIDL.XML) child;
add(new HTML(xml.getXMLAsString()));
}
}
}
}
}
/**
* Shows this error message next to given element.
*
* @param indicatorElement
*/
public void showAt(Element indicatorElement) {
VOverlay errorContainer = (VOverlay) getParent();
if (errorContainer == null) {
errorContainer = new VOverlay();
errorContainer.setWidget(this);
}
errorContainer.setPopupPosition(
DOM.getAbsoluteLeft(indicatorElement)
+ 2
* DOM.getElementPropertyInt(indicatorElement,
"offsetHeight"),
DOM.getAbsoluteTop(indicatorElement)
+ 2
* DOM.getElementPropertyInt(indicatorElement,
"offsetHeight"));
errorContainer.show();
}
public void hide() {
final VOverlay errorContainer = (VOverlay) getParent();
if (errorContainer != null) {
errorContainer.hide();
}
}
}