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
|
/*
kwidgetlister.cpp
This file is part of libtdenetwork.
Copyright (c) 2001 Marc Mutz <mutz@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License,
version 2, as published by the Free Software Foundation.
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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifh Floor, Boston, MA 02110-1301 USA
In addition, as a special exception, the copyright holders give
permission to link the code of this library with any edition of
the TQt library by Trolltech AS, Norway (or with modified versions
of TQt that use the same license as TQt), and distribute linked
combinations including the two. You must obey the GNU General
Public License in all respects for all of the code used other than
TQt. If you modify this file, you may extend this exception to
your version of the file, but you are not obligated to do so. If
you do not wish to do so, delete this exception statement from
your version.
*/
#include "kwidgetlister.h"
#include <tdelocale.h>
#include <kdebug.h>
#include <kpushbutton.h>
#include <kiconloader.h>
#include <tqlayout.h>
#include <tqhbox.h>
#include <assert.h>
KWidgetLister::KWidgetLister( int minWidgets, int maxWidgets, TQWidget *parent, const char* name )
: TQWidget( parent, name )
{
mWidgetList.setAutoDelete(TRUE);
mMinWidgets = TQMAX( minWidgets, 1 );
mMaxWidgets = TQMAX( maxWidgets, mMinWidgets + 1 );
//--------- the button box
mLayout = new TQVBoxLayout(this, 0, 4);
mButtonBox = new TQHBox(this);
mButtonBox->setSpacing(4);
mLayout->addWidget( mButtonBox );
mBtnMore = new KPushButton( i18n("more widgets","More"), mButtonBox );
mBtnMore->setIconSet(SmallIconSet(TQString::fromLatin1("go-down")));
mButtonBox->setStretchFactor( mBtnMore, 0 );
mBtnFewer = new KPushButton( i18n("fewer widgets","Fewer"), mButtonBox );
mBtnFewer->setIconSet(SmallIconSet(TQString::fromLatin1("go-up")));
mButtonBox->setStretchFactor( mBtnFewer, 0 );
TQWidget *spacer = new TQWidget( mButtonBox );
mButtonBox->setStretchFactor( spacer, 1 );
mBtnClear = new KPushButton( i18n("clear widgets","Clear"), mButtonBox );
mBtnClear->setIconSet(SmallIconSet(TQString::fromLatin1("locationbar_erase")));
mButtonBox->setStretchFactor( mBtnClear, 0 );
//---------- connect everything
connect( mBtnMore, TQ_SIGNAL(clicked()),
this, TQ_SLOT(slotMore()) );
connect( mBtnFewer, TQ_SIGNAL(clicked()),
this, TQ_SLOT(slotFewer()) );
connect( mBtnClear, TQ_SIGNAL(clicked()),
this, TQ_SLOT(slotClear()) );
enableControls();
}
KWidgetLister::~KWidgetLister()
{
}
void KWidgetLister::slotMore()
{
// the class should make certain that slotMore can't
// be called when mMaxWidgets are on screen.
assert( (int)mWidgetList.count() < mMaxWidgets );
addWidgetAtEnd();
// adjustSize();
enableControls();
}
void KWidgetLister::slotFewer()
{
// the class should make certain that slotFewer can't
// be called when mMinWidgets are on screen.
assert( (int)mWidgetList.count() > mMinWidgets );
removeLastWidget();
// adjustSize();
enableControls();
}
void KWidgetLister::slotClear()
{
setNumberOfShownWidgetsTo( mMinWidgets );
// clear remaining widgets
TQPtrListIterator<TQWidget> it( mWidgetList );
for ( it.toFirst() ; it.current() ; ++it )
clearWidget( (*it) );
// adjustSize();
enableControls();
emit clearWidgets();
}
void KWidgetLister::addWidgetAtEnd(TQWidget *w)
{
if (!w) w = this->createWidget(this);
mLayout->insertWidget( mLayout->findWidget( mButtonBox ), w );
mWidgetList.append( w );
w->show();
enableControls();
emit widgetAdded();
emit widgetAdded(w);
}
void KWidgetLister::removeLastWidget()
{
// The layout will take care that the
// widget is removed from screen, too.
mWidgetList.removeLast();
enableControls();
emit widgetRemoved();
}
void KWidgetLister::clearWidget( TQWidget* /*aWidget*/ )
{
}
TQWidget* KWidgetLister::createWidget( TQWidget* parent )
{
return new TQWidget( parent );
}
void KWidgetLister::setNumberOfShownWidgetsTo( int aNum )
{
int superfluousWidgets = TQMAX( (int)mWidgetList.count() - aNum, 0 );
int missingWidgets = TQMAX( aNum - (int)mWidgetList.count(), 0 );
// remove superfluous widgets
for ( ; superfluousWidgets ; superfluousWidgets-- )
removeLastWidget();
// add missing widgets
for ( ; missingWidgets ; missingWidgets-- )
addWidgetAtEnd();
}
void KWidgetLister::enableControls()
{
int count = mWidgetList.count();
bool isMaxWidgets = ( count >= mMaxWidgets );
bool isMinWidgets = ( count <= mMinWidgets );
mBtnMore->setEnabled( !isMaxWidgets );
mBtnFewer->setEnabled( !isMinWidgets );
}
#include "kwidgetlister.moc"
|
