/**
* Copyright 2010 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 org.waveprotocol.wave.client.widget.popup;
import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Element;
import com.google.gwt.user.client.ui.Panel;
/**
* Creates popups by deferring to a late-bound provider which may
* change depending on platform.
*
*/
public class PopupFactory {
private static PopupProvider provider;
// Private constructor to prevents instantiation
private PopupFactory() {
}
/**
* Returns the singleton popup provider.
*/
public static PopupProvider getProvider() {
if (provider == null) {
provider = GWT.create(PopupProvider.class);
}
return provider;
}
/**
* Create a popup panel
*
* @param relative Optional reference element to pass to positioner.
* @param positioner The positioner to use when this popup is shown.
* May be ignored on some platforms.
* @param chrome The widget providing chrome for this popup.
* @param autoHide If true, clicking outside the popup will cause the popup to hide itself.
*/
public static UniversalPopup createPopup(Element relative, RelativePopupPositioner positioner,
PopupChrome chrome, boolean autoHide) {
return getProvider().createPopup(relative, positioner, chrome, autoHide);
}
/**
* Creates popups suitable for current platform.
*/
public static void setRootPanel(Panel rootPanel) {
getProvider().setRootPanel(rootPanel);
}
}