content: /*
   *  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.causeway.extensions.fullcalendar.wkt.integration.fc.callback;
  
  import org.apache.wicket.ajax.AjaxRequestTarget;
  import org.apache.wicket.request.Request;
  import org.joda.time.DateMidnight;
  import org.joda.time.DateTimeZone;
  import org.joda.time.format.DateTimeFormatter;
  import org.joda.time.format.ISODateTimeFormat;
  
  import org.apache.causeway.extensions.fullcalendar.wkt.integration.fc.CalendarResponse;
  import org.apache.causeway.extensions.fullcalendar.wkt.integration.fc.ViewType;
  
  /**
   * A base callback that passes back calendar's starting date
   */
  public abstract class ViewDisplayCallback
  extends AbstractAjaxCallback
  implements CallbackWithHandler {
  
      private static final long serialVersionUID = 1L;
  
      @Override
  	protected String configureCallbackScript(final String script, final String urlTail) {
  		return script
  			.replace(
  				urlTail,
  				"&view=\"+v.name+\"&start=\"+fullCalendarExtIsoDate(v.start)+\"&end=\"+fullCalendarExtIsoDate(v.end)+\"&visibleStart=\"+fullCalendarExtIsoDate(v.visStart)+\"&visibleEnd=\"+fullCalendarExtIsoDate(v.visEnd)+\"");
  	}
  
  	@Override
  	public String getHandlerScript() {
  		return String.format("function(v) {%s;}", getCallbackScript());
  	}
  
  	@Override
  	protected void respond(final AjaxRequestTarget target) {
  		Request r = target.getPage().getRequest();
  		ViewType type = ViewType.forCode(r.getRequestParameters().getParameterValue("view").toString());
  		DateTimeFormatter fmt = ISODateTimeFormat.dateTimeParser().withZone(DateTimeZone.UTC);
  		DateMidnight start = fmt.parseDateTime(r.getRequestParameters().getParameterValue("start").toString())
  			.toDateMidnight();
  		DateMidnight end = fmt.parseDateTime(r.getRequestParameters().getParameterValue("end").toString())
  			.toDateMidnight();
  		DateMidnight visibleStart = fmt.parseDateTime(
  			r.getRequestParameters().getParameterValue("visibleStart").toString()).toDateMidnight();
  		DateMidnight visibleEnd = fmt
  			.parseDateTime(r.getRequestParameters().getParameterValue("visibleEnd").toString()).toDateMidnight();
  		View view = new View(type, start, end, visibleStart, visibleEnd);
  		CalendarResponse response = new CalendarResponse(getCalendar(), target);
  		onViewDisplayed(view, response);
  	}
  
  	protected abstract void onViewDisplayed(View view, CalendarResponse response);
  }
  