summaryrefslogtreecommitdiffstats
path: root/tdeabc/addresseelist.h
blob: 7825a0c2c3b6061694b9fe5b42aedef2a487f170 (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
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
/*
    This file is part of libtdeabc.
    Copyright (c) 2002 Jost Schenck <jost@schenck.de>
                  2003 Tobias Koenig <tokoe@kde.org>

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library 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
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
*/

#ifndef KABC_ADDRESSEELIST_H
#define KABC_ADDRESSEELIST_H

#include <tqvaluelist.h>

#include "addressee.h"

namespace TDEABC {

class Field;
class SortField;
class SortMode;

/**
 * Each trait must implement one static function for equality, one for "less
 * than". Class name should be the field name. A trait does not necessarily
 * have to stick to just one field: a trait sorting by family name can e.g.
 * sort addressees with equal family name by given name.
 *
 * If you want to implement reverse sorting, you do not have to write another
 * trait, as AddresseeList takes care of that.
 */
namespace SortingTraits
{

class KABC_EXPORT Uid
{
  public:
    static bool eq( const Addressee &, const Addressee & );
    static bool lt( const Addressee &, const Addressee & );
};

class KABC_EXPORT Name
{
  public:
    static bool eq( const Addressee &, const Addressee & );
    static bool lt( const Addressee &, const Addressee & );
};

class KABC_EXPORT FormattedName
{
  public:
    static bool eq( const Addressee &, const Addressee & );
    static bool lt( const Addressee &, const Addressee & );
};

class KABC_EXPORT FamilyName // fallback to given name
{
  public:
    static bool eq( const Addressee &, const Addressee & );
    static bool lt( const Addressee &, const Addressee & );
};

class KABC_EXPORT GivenName  // fallback to family name
{
  public:
    static bool eq( const Addressee &, const Addressee & );
    static bool lt( const Addressee &, const Addressee & );
};

}

/**
 * Addressee attribute used for sorting.
 */
typedef enum { Uid, Name, FormattedName, FamilyName, GivenName } SortingCriterion;

/**
 * @short  a TQValueList of Addressee, with sorting functionality
 *
 * This class extends the functionality of TQValueList with
 * sorting methods specific to the Addressee class. It can be used
 * just like any other TQValueList but is no template class.
 *
 * An AddresseeList does not automatically keep sorted when addressees
 * are added or removed or the sorting order is changed, as this would
 * slow down larger operations by sorting after every step. So after
 * such operations you have to call {@link #sort} or {@link #sortBy} to
 * create a defined order again.
 *
 * Iterator usage is inherited by TQValueList and extensively documented
 * there. Please remember that the state of an iterator is undefined
 * after any sorting operation.
 *
 * For the enumeration Type SortingCriterion, which specifies the
 * field by the collection will be sorted, the following values exist:
 * Uid, Name, FormattedName, FamilyName, GivenName.
 *
 * @author Jost Schenck jost@schenck.de
 */
class KABC_EXPORT AddresseeList : public TQValueList<Addressee>
{
  public:
    AddresseeList();
    ~AddresseeList();
    AddresseeList( const AddresseeList & );
    AddresseeList( const TQValueList<Addressee> & );

    /**
     * Debug output.
     */
    void dump() const;

    /**
     * Determines the direction of sorting. On change, the list
     * will <em>not</em> automatically be resorted.
     * @param r   <tt>true</tt> if sorting should be done reverse, <tt>false</tt> otherwise
     */
    void setReverseSorting( bool r = true ) { mReverseSorting = r; }

    /**
     * Returns the direction of sorting.
     * @return    <tt>true</tt> if sorting is done reverse, <tt>false</tt> otherwise
     */
    bool reverseSorting() const { return mReverseSorting; }

    /**
     * Sorts this list by a specific criterion.
     * @param c    the criterion by which should be sorted
     */
    void sortBy( SortingCriterion c );

    /**
     * Sorts this list by a specific field. If no parameter is given, the
     * last used Field object will be used.
     * @param field    pointer to the Field object to be sorted by
     */
    void sortByField( Field *field = 0 );

    /**
     * Sorts this list by a specific sorting mode.
     * @param mode    pointer to the sorting mode object to be sorted by
     * @since 3.4
    */
    void sortByMode( SortMode *mode = 0 );

    /**
     * Sorts this list by its active sorting criterion. This normally is the
     * criterion of the last sortBy operation or <tt>FormattedName</tt> if up
     * to now there has been no sortBy operation.
     *
     * Please note that the sorting trait of the last {@link #sortByTrait}
     * method call is not remembered and thus the action can not be repeated
     * by this method.
     */
    void sort();

    /**
     * Templated sort function. You normally will not want to use this but
     * {@link #sortBy} and {@link #sort} instead as the existing sorting
     * criteria completely suffice for most cases.
     *
     * However, if you do want to use some special sorting criterion, you can
     * write a trait class that will be provided to this templated method.
     * This trait class has to have a class declaration like the following:
     * \code
     * class MySortingTrait {
     *   public:
     *     // eq returns true if a1 and a2 are equal
     *     static bool eq(TDEABC::Addressee a1, TDEABC::Addressee a2);
     *     // lt returns true is a1 is "less than" a2
     *     static bool lt(TDEABC::Addressee a1, TDEABC::Addressee a2);
     * };
     * \endcode
     * You can then pass this class to the sortByTrait method like this:
     * \code
     * myAddresseelist.sortByTrait&lt;MySortingTrait&gt;();
     * \endcode
     * Please note that the {@link #sort} method can not be used to repeat the
     * sorting of the last <tt>sortByTrait</tt> action.
     *
     * Right now this method uses the bubble sort algorithm. This should be
     * replaced for a better one when I have time.
     */
    template<class Trait> void sortByTrait();

    /**
     * Returns the active sorting criterion, ie the sorting criterion that
     * will be used by a {@link #sort} call.
     */
    SortingCriterion sortingCriterion() const { return mActiveSortingCriterion; }

    /**
     * Returns the active sorting field, ie a pointer to the Field object
     * which was used for the last {@link #sortByField} operation.
     * This function returns the last GLOBAL sorting field, not
     * the class specific one.
     * You're a lot better off by keeping track of this locally.
     */
    Field* sortingField() const;

  private:
    bool mReverseSorting;
    SortingCriterion mActiveSortingCriterion;
    //KDE 4.0 - add a d-pointer here!
};

}

#endif