/*
* Copyright 2000-2014 Vaadin 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.client;
import com.google.gwt.dom.client.Element;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.Widget;
import com.vaadin.client.ui.VOverlay;
public class VErrorMessage extends FlowPanel {
public static final String CLASSNAME = "v-errormessage";
private Widget owner;
public VErrorMessage() {
super();
setStyleName(CLASSNAME);
}
/**
* Set the owner, i.e the Widget that created this {@link VErrorMessage}.
* The owner must be set if the {@link VErrorMessage} is created
* 'stand-alone' (not within a {@link VOverlay}), or theming might not work
* properly.
*
* @see VOverlay#setOwner(Widget)
* @param owner
* the owner (creator Widget)
*/
public void setOwner(Widget owner) {
this.owner = owner;
}
public void updateMessage(String htmlErrorMessage) {
clear();
if (htmlErrorMessage == null || htmlErrorMessage.length() == 0) {
add(new HTML(" "));
} else {
// pre-formatted on the server as div per child
add(new HTML(htmlErrorMessage));
}
}
/**
* Shows this error message next to given element.
*
* @param indicatorElement
* @deprecated As of 7.2, call and override {@link #showAt(Element)} instead
*/
@Deprecated
public void showAt(com.google.gwt.user.client.Element indicatorElement) {
VOverlay errorContainer = (VOverlay) getParent();
if (errorContainer == null) {
errorContainer = new VOverlay();
errorContainer.setWidget(this);
errorContainer.setOwner(owner);
}
errorContainer.setPopupPosition(
DOM.getAbsoluteLeft(indicatorElement)
+ 2
* DOM.getElementPropertyInt(indicatorElement,
"offsetHeight"),
DOM.getAbsoluteTop(indicatorElement)
+ 2
* DOM.getElementPropertyInt(indicatorElement,
"offsetHeight"));
errorContainer.show();
}
/**
* Shows this error message next to given element.
*
* @param indicatorElement
*
* @since 7.2
*/
public void showAt(Element indicatorElement) {
showAt(DOM.asOld(indicatorElement));
}
public void hide() {
final VOverlay errorContainer = (VOverlay) getParent();
if (errorContainer != null) {
errorContainer.hide();
}
}
}