blob: f4d47f89d4d9e978fa3e907b3d132baa33bf3575 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
/*
* Copyright 2000-2014 Vaadin Ltd.
*
* 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.vaadin.ui.components.calendar.handler;
import java.util.Calendar;
import java.util.Date;
import com.vaadin.shared.ui.calendar.DateConstants;
import com.vaadin.ui.components.calendar.CalendarComponentEvents.BackwardEvent;
import com.vaadin.ui.components.calendar.CalendarComponentEvents.BackwardHandler;
/**
* Implements basic functionality needed to enable backwards navigation.
*
* @since 7.1
* @author Vaadin Ltd.
*/
@SuppressWarnings("serial")
public class BasicBackwardHandler implements BackwardHandler {
/*
* (non-Javadoc)
*
* @see
* com.vaadin.addon.calendar.ui.CalendarComponentEvents.BackwardHandler#
* backward
* (com.vaadin.addon.calendar.ui.CalendarComponentEvents.BackwardEvent)
*/
@Override
public void backward(BackwardEvent event) {
Date start = event.getComponent().getStartDate();
Date end = event.getComponent().getEndDate();
// calculate amount to move back
int durationInDays = (int) (((end.getTime()) - start.getTime()) / DateConstants.DAYINMILLIS);
durationInDays++;
durationInDays = -durationInDays;
// set new start and end times
Calendar javaCalendar = event.getComponent().getInternalCalendar();
javaCalendar.setTime(start);
javaCalendar.add(java.util.Calendar.DATE, durationInDays);
Date newStart = javaCalendar.getTime();
javaCalendar.setTime(end);
javaCalendar.add(java.util.Calendar.DATE, durationInDays);
Date newEnd = javaCalendar.getTime();
setDates(event, newStart, newEnd);
}
/**
* Set the start and end dates for the event
*
* @param event
* The event that the start and end dates should be set
* @param start
* The start date
* @param end
* The end date
*/
protected void setDates(BackwardEvent event, Date start, Date end) {
event.getComponent().setStartDate(start);
event.getComponent().setEndDate(end);
}
}
|
