org.cast.isi.component.QuickFlipForm.java Source code

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Here is the source code for org.cast.isi.component.QuickFlipForm.java

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/*
 * Copyright 2011-2015 CAST, Inc.
 *
 * This file is part of the UDL Curriculum Toolkit:
 * see <http://udl-toolkit.cast.org>.
 *
 * The UDL Curriculum Toolkit is free software: you can redistribute and/or
 * modify it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * The UDL Curriculum Toolkit 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this software.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.cast.isi.component;

import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.FormComponentLabel;
import org.apache.wicket.markup.html.form.SubmitLink;
import org.apache.wicket.markup.html.form.TextField;
import org.apache.wicket.model.Model;
import org.apache.wicket.request.mapper.parameter.PageParameters;
import org.cast.isi.ISIApplication;

/**
 * A single text field that redirects to the entered page number.
 * 
 * @author jbrookover
 *
 */
public class QuickFlipForm extends Form<Object> {

    private static final long serialVersionUID = 1L;

    public QuickFlipForm(String id, boolean addLabel) {
        this(id, addLabel, null);
    }

    public QuickFlipForm(String id, boolean addLabel, Integer currentPage) {
        super(id);
        Model<String> numberModel;
        if (currentPage != null)
            numberModel = new Model<String>(currentPage.toString());
        else
            numberModel = new Model<String>("");
        TextField<String> numberField = new TextField<String>("numberField", numberModel);
        add(numberField);
        if (addLabel) {
            FormComponentLabel numberFieldLabel = new FormComponentLabel("numberFieldLabel", numberField);
            add(numberFieldLabel);
        }
        add(new SubmitLink("goLink"));
    }

    @Override
    public void onSubmit() {
        super.onSubmit();
        String page = get("numberField").getDefaultModelObjectAsString();
        int pageNum = -1;
        try {
            pageNum = Integer.parseInt(page);
        } catch (Exception ex) {
            /* Do Nothing */}

        // check if the page number is valid
        if (ISIApplication.get().getPageNum(pageNum) == null)
            pageNum = -1;

        if (pageNum != -1) {
            PageParameters param = new PageParameters();
            param.add("pageNum", String.valueOf(pageNum));
            setResponsePage(ISIApplication.get().getReadingPageClass(), param);
        }
    }
}