/*
* Copyright (c) 2005-2016 Vincent Vandenschrick. All rights reserved.
*
* This file is part of the Jspresso framework.
*
* Jspresso is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Jspresso is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Jspresso. If not, see <http://www.gnu.org/licenses/>.
*/
package org.jspresso.framework.application.frontend.action.module;
import java.util.Map;
import org.jspresso.framework.action.IActionHandler;
import org.jspresso.framework.application.frontend.action.FrontendAction;
/**
* This action triggers a <i>"backward"</i> navigation in the recorded
* module history. The frontend controller automatically keeps track of the
* traversed modules so that a user can go back and forward his navigation
* history, much like for a web navigation.
*
* @author Vincent Vandenschrick
* @param <E>
* the actual gui component type used.
* @param <F>
* the actual icon type used.
* @param <G>
* the actual action type used.
*/
public class DisplayPreviousPinnedModuleAction<E, F, G> extends
FrontendAction<E, F, G> {
public final static String BLOCK_BACKWARD_MODULE_NAVIGATION = "BLOCK_BACKWARD_MODULE_NAVIGATION";
/**
* Displays the previous pinned module.
* <p>
* {@inheritDoc}
*/
@Override
public boolean execute(IActionHandler actionHandler,
Map<String, Object> context) {
Boolean blockBackwardNavigation = (Boolean) context.get(BLOCK_BACKWARD_MODULE_NAVIGATION);
if (blockBackwardNavigation != null && !blockBackwardNavigation) {
getController(context).displayPreviousPinnedModule();
}
return super.execute(actionHandler, context);
}
}