com.tysanclan.site.projectewok.components.CalendarPanelNavigator.java Source code

Introduction

Here is the source code for com.tysanclan.site.projectewok.components.CalendarPanelNavigator.java

Source

/**
 * Tysan Clan Website
 * Copyright (C) 2008-2013 Jeroen Steenbeeke and Ties van de Ven
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.tysanclan.site.projectewok.components;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;

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.basic.Label;
import org.apache.wicket.markup.html.panel.Panel;

import com.tysanclan.site.projectewok.util.DateUtil;

/**
 * @author Jeroen Steenbeeke
 */
public abstract class CalendarPanelNavigator extends Panel {
    private static final long serialVersionUID = 1L;

    private CalendarPanel panel;

    private Date selectedDate;

    public CalendarPanelNavigator(String id, CalendarPanel panel) {
        super(id);
        this.panel = panel;

        selectedDate = DateUtil.getMidnightDate(panel.getCalendar().getTime());

        add(createMonthLabel(selectedDate));

        add(new AjaxLink<Date>("previous") {
            private static final long serialVersionUID = 1L;

            @Override
            public void onClick(AjaxRequestTarget target) {
                Calendar cal = DateUtil.getCalendarInstance();
                cal.setTime(getSelectedDate());
                cal.add(Calendar.MONTH, -1);
                replacePanel(target, cal.getTime());
            }

        });

        add(new AjaxLink<Date>("next") {
            private static final long serialVersionUID = 1L;

            @Override
            public void onClick(AjaxRequestTarget target) {
                Calendar cal = DateUtil.getCalendarInstance();
                cal.setTime(getSelectedDate());
                cal.add(Calendar.MONTH, 1);
                replacePanel(target, cal.getTime());
            }

        });

    }

    /**
     * @return the selectedDate
     */
    public Date getSelectedDate() {
        return selectedDate;
    }

    public Label createMonthLabel(Date date) {
        SimpleDateFormat format = new SimpleDateFormat("MMMM yyyy", Locale.US);
        format.setTimeZone(DateUtil.NEW_YORK);

        Label label = new Label("month", format.format(date));
        label.setOutputMarkupId(true);
        label.setOutputMarkupPlaceholderTag(true);

        return label;
    }

    private void replacePanel(AjaxRequestTarget target, Date newDate) {
        Calendar cal = DateUtil.getCalendarInstance();
        cal.setTime(newDate);
        CalendarPanel newPanel = createNewPanel(panel.getId(), cal);
        panel.replaceWith(newPanel);
        panel = newPanel;

        Component oldLabel = get("month");
        Label label = createMonthLabel(newDate);
        oldLabel.replaceWith(label);

        if (target != null) {
            target.add(panel);
            target.add(label);
            selectedDate = newDate;
        }
    }

    public abstract CalendarPanel createNewPanel(String id, Calendar calendar);

}