1/*
2 Copyright 2009 Ingo Klöcker <kloecker@kde.org>
3
4 This library is free software; you can redistribute it and/or modify it
5 under the terms of the GNU Library General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or (at your
7 option) any later version.
8
9 This library is distributed in the hope that it will be useful, but WITHOUT
10 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
12 License for more details.
13
14 You should have received a copy of the GNU Library General Public License
15 along with this library; see the file COPYING.LIB. If not, write to the
16 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17 02110-1301, USA.
18*/
19
20#include "comparisonvisitor.h"
21#include "event.h"
22#include "freebusy.h"
23#include "journal.h"
24#include "todo.h"
25
26using namespace KCal;
27
28class ComparisonVisitor::Private
29{
30 public:
31 Private() : mReference( 0 ) {}
32
33 public:
34 const IncidenceBase *mReference;
35};
36
37ComparisonVisitor::ComparisonVisitor() : d( new Private() )
38{
39}
40
41ComparisonVisitor::~ComparisonVisitor()
42{
43 delete d;
44}
45
46bool ComparisonVisitor::compare( IncidenceBase *incidence, const IncidenceBase *reference )
47{
48 d->mReference = reference;
49
50 const bool result = incidence ? incidence->accept( *this ) : reference == 0;
51
52 d->mReference = 0;
53
54 return result;
55}
56
57bool ComparisonVisitor::visit( Event *event )
58{
59 Q_ASSERT( event != 0 );
60
61 const Event *refEvent = dynamic_cast<const Event*>( d->mReference );
62 if ( refEvent ) {
63 return *event == *refEvent;
64 } else {
65 // refEvent is no Event and thus cannot be equal to event
66 return false;
67 }
68}
69
70bool ComparisonVisitor::visit( Todo *todo )
71{
72 Q_ASSERT( todo != 0 );
73
74 const Todo *refTodo = dynamic_cast<const Todo*>( d->mReference );
75 if ( refTodo ) {
76 return *todo == *refTodo;
77 } else {
78 // refTodo is no Todo and thus cannot be equal to todo
79 return false;
80 }
81}
82
83bool ComparisonVisitor::visit( Journal *journal )
84{
85 Q_ASSERT( journal != 0 );
86
87 const Journal *refJournal = dynamic_cast<const Journal*>( d->mReference );
88 if ( refJournal ) {
89 return *journal == *refJournal;
90 } else {
91 // refJournal is no Journal and thus cannot be equal to journal
92 return false;
93 }
94}
95
96bool ComparisonVisitor::visit( FreeBusy *freebusy )
97{
98 Q_ASSERT( freebusy != 0 );
99
100 const FreeBusy *refFreeBusy = dynamic_cast<const FreeBusy*>( d->mReference );
101 if ( refFreeBusy ) {
102 return *freebusy == *refFreeBusy;
103 } else {
104 // refFreeBusy is no FreeBusy and thus cannot be equal to freebusy
105 return false;
106 }
107}
108