com.aplombee.examples.QuickGridViewWithAjaxLinkAndBoundaries.java Source code

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Here is the source code for com.aplombee.examples.QuickGridViewWithAjaxLinkAndBoundaries.java

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/**
 *
 Copyright 2012 Vineet Semwal
    
 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.aplombee.examples;

import com.aplombee.ItemsNavigationStrategy;
import com.aplombee.QuickGridView;
import org.apache.wicket.Component;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.markup.html.AjaxLink;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.repeater.data.IDataProvider;
import org.apache.wicket.markup.repeater.data.ListDataProvider;

import java.util.ArrayList;
import java.util.List;

/**
 * QuickGridView with AjaxLink
 *
 * @author Vineet Semwal
 */
public class QuickGridViewWithAjaxLinkAndBoundaries extends WebPage {
    private List<Integer> list = new ArrayList<Integer>();

    public QuickGridViewWithAjaxLinkAndBoundaries() {
        for (int i = 0; i < 10; i++) {
            list.add(i);
        }
    }

    @Override
    protected void onInitialize() {
        super.onInitialize();

        IDataProvider<Integer> data = new ListDataProvider<Integer>(list);
        WebMarkupContainer numbers = new WebMarkupContainer("numbers"); //parent for quickview
        numbers.setOutputMarkupId(true); //needed for ajax
        Component start, end;
        numbers.add(start = new Label("start").setOutputMarkupPlaceholderTag(true));
        numbers.add(end = new Label("end").setOutputMarkupPlaceholderTag(true));

        final QuickGridView<Integer> number = new QuickGridView<Integer>("number", data,
                new ItemsNavigationStrategy(), start, end) {
            @Override
            protected void populate(CellItem<Integer> item) {
                item.add(new Label("display", item.getModel()));
            }

            @Override
            protected void populateEmptyItem(CellItem<Integer> item) {
                item.add(new Label("display"));
            }
        };
        number.setColumns(2);
        numbers.add(number);
        add(numbers);

        AjaxLink addLink = new AjaxLink("addLink") {

            @Override
            public void onClick(AjaxRequestTarget target) {
                int newObject = list.get(list.size() - 1) + 1;
                list.add(newObject);
                int newObject2 = list.get(list.size() - 1) + 1;
                list.add(newObject2);
                List<Integer> newOnes = new ArrayList<Integer>();
                newOnes.add(newObject);
                newOnes.add(newObject2);

                number.addRows(newOnes.iterator());//just enough to add new rows and corresponding cells

            }

        };
        addLink.setOutputMarkupPlaceholderTag(true);
        add(addLink);

        AjaxLink addAtStartLink = new AjaxLink("addAtStartLink") {

            @Override
            public void onClick(AjaxRequestTarget target) {
                int newObject = list.get(0) - 1;
                list.add(0, newObject);
                int newObject2 = newObject - 1;
                list.add(0, newObject2);
                List<Integer> newOnes = new ArrayList<Integer>();
                newOnes.add(newObject2);
                newOnes.add(newObject);

                number.addRowsAtStart(newOnes.iterator());//just enough to add new rows  and corresponding cells

            }

        };
        addAtStartLink.setOutputMarkupPlaceholderTag(true);
        add(addAtStartLink);

    }

}