/*******************************************************************************
* Copyright (C) 2011 Angelo Zerr <angelo.zerr@gmail.com>, Pascal Leclercq <pascal.leclercq@gmail.com>
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Angelo ZERR - initial API and implementation
* Pascal Leclercq - initial API and implementation
*******************************************************************************/
package org.eclipse.nebula.widgets.pagination;
/**
* Handler used to do something before/after page loading process. You can for
* instance display a "Loading" message when pagination start and close it when
* data are loaded.
*
* @param <T>
* the pagination controller.
*/
public interface IPageLoaderHandler<T extends PageableController> {
/** Default Handler **/
public static final IPageLoaderHandler<?> DEFAULT_HANDLER = new IPageLoaderHandler<PageableController>() {
public void onBeforePageLoad(PageableController controller) {
}
public boolean onAfterPageLoad(PageableController controller,
Throwable e) {
if (e != null) {
// Error while page loading was processed, display the stack
// trace.
e.printStackTrace();
}
return true;
}
};
/**
* This method is called before page loading process.
*
* @param controller
* the pagination controller.
*/
void onBeforePageLoad(T controller);
/**
* This method is called after page loading process. If there is an error
* the given exception is filled with the exception.
*
* @param controller
* @param e
* @return true if exception (when there is an error) must be thrown and
* false otherwise.
*/
boolean onAfterPageLoad(T controller, Throwable e);
}