IsisAjaxFallbackOrderByBorder.java

/**
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You 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.apache.isis.viewer.wicket.ui.components.collectioncontents.ajaxtable;

import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.attributes.IAjaxCallListener;
import org.apache.wicket.extensions.ajax.markup.html.repeater.data.sort.AjaxFallbackOrderByBorder;
import org.apache.wicket.extensions.markup.html.repeater.data.sort.ISortState;
import org.apache.wicket.extensions.markup.html.repeater.data.sort.ISortStateLocator;
import org.apache.wicket.extensions.markup.html.repeater.data.sort.SortOrder;

import org.apache.isis.viewer.wicket.model.hints.UiHintContainer;

public class IsisAjaxFallbackOrderByBorder<T> extends AjaxFallbackOrderByBorder<T> {

    private static final long serialVersionUID = 1L;
    
    private final T sortProperty;
    private final IsisAjaxFallbackDataTable<?, ?> dataTable;

    private final ISortStateLocator<T> stateLocator;
    
    public IsisAjaxFallbackOrderByBorder(String id, IsisAjaxFallbackDataTable<?, ?> dataTable, T sortProperty, ISortStateLocator<T> stateLocator, IAjaxCallListener ajaxCallListener) {
        super(id, sortProperty, stateLocator, ajaxCallListener);
        this.dataTable = dataTable;
        this.stateLocator = stateLocator;
        this.sortProperty = sortProperty;
    }

    @Override
    protected void onAjaxClick(final AjaxRequestTarget target)
    {
        target.add(dataTable);

        final UiHintContainer uiHintContainer = getUiHintContainer();
        if(uiHintContainer == null) {
            return;
        }
        
        final ISortState<T> state = stateLocator.getSortState();
        final SortOrder order = state.getPropertySortOrder(sortProperty);
        
        dataTable.setSortOrderHintAndBroadcast(order, sortProperty.toString(), target);
        dataTable.setPageNumberHintAndBroadcast(target);
    }

    @Override
    protected void onSortChanged()
    {
        super.onSortChanged();
        // UI hint & event broadcast in onAjaxClick
        dataTable.setCurrentPage(0); 
    }
    
    public UiHintContainer getUiHintContainer() {
        return UiHintContainer.Util.hintContainerOf(dataTable);
    }
}