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
|
/* This file is part of the KDE project
Copyright (C) 2002, The Karbon Developers
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.
*/
#include "vreplacingcmd.h"
#include "vselection.h"
#include "vdocument.h"
VReplacingCmd::VReplacingCmd( VDocument* doc, const TQString& name )
: VCommand( doc, name )
{
// Set members.
m_oldObjects = doc ? document()->selection()->clone() : 0L;
m_newObjects = 0L;
}
VReplacingCmd::~VReplacingCmd()
{
delete( m_oldObjects );
delete( m_newObjects );
}
void
VReplacingCmd::execute()
{
// Did we have at least once a success? Otherwise we don't get inserted
// into the command history.
bool successful = false;
// Create new shapes if they don't exist yet.
if( !m_newObjects )
{
m_newObjects = new VSelection();
// Pointer to temporary object.
VObject* newObject;
VObjectListIterator itr( m_oldObjects->objects() );
VObjectList rejects;
for( ; itr.current(); ++itr )
{
// Clone object and visit the clone.
newObject = itr.current()->clone();
// Success.
if( visit( *newObject ) )
{
successful = true;
// Insert new shape right before old shape.
itr.current()->parent()->insertInfrontOf(
newObject, itr.current() );
// Add new shape to list of new objects.
m_newObjects->append( newObject );
}
// No success.
else
{
rejects.append( itr.current() );
// Delete temporary object.
delete( newObject );
}
}
VObjectListIterator jtr( rejects );
for( ; jtr.current(); ++jtr )
{
// Don't consider this object in the future anymore.
m_oldObjects->take( *jtr.current() );
}
}
// Nothing to do.
if( m_newObjects->objects().count() == 0 )
return;
VObjectListIterator itr( m_oldObjects->objects() );
// Hide old objects.
for( ; itr.current(); ++itr )
{
document()->selection()->take( *itr.current() );
itr.current()->setState( VObject::deleted );
}
// Show new objects.
for( itr = m_newObjects->objects(); itr.current(); ++itr )
{
itr.current()->setState( VObject::normal );
document()->selection()->append( itr.current() );
}
// Tell command history wether we had success at least once.
setSuccess( successful );
}
void
VReplacingCmd::unexecute()
{
// Nothing to do.
if( m_newObjects->objects().count() == 0 )
return;
VObjectListIterator itr( m_oldObjects->objects() );
// Show old objects.
for( ; itr.current(); ++itr )
{
itr.current()->setState( VObject::normal );
document()->selection()->append( itr.current() );
}
// Hide new objects.
for( itr = m_newObjects->objects(); itr.current(); ++itr )
{
document()->selection()->take( *itr.current() );
itr.current()->setState( VObject::deleted );
}
// Reset success for command history.
setSuccess( false );
}
|
