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
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you 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 .
*/
#include <svx/sdrundomanager.hxx>
SdrUndoManager::SdrUndoManager(sal_uInt16 nMaxUndoActionCount)
: EditUndoManager(nMaxUndoActionCount)
, maEndTextEditHdl()
, mpLastUndoActionBeforeTextEdit(0)
, mbEndTextEditTriggeredFromUndo(false)
{
}
SdrUndoManager::~SdrUndoManager()
{
}
bool SdrUndoManager::Undo()
{
if(isTextEditActive())
{
bool bRetval(false);
// we are in text edit mode
if(GetUndoActionCount() && mpLastUndoActionBeforeTextEdit != GetUndoAction(0))
{
// there is an undo action for text edit, trigger it
bRetval = EditUndoManager::Undo();
}
else
{
// no more text edit undo, end text edit
mbEndTextEditTriggeredFromUndo = true;
maEndTextEditHdl.Call(this);
mbEndTextEditTriggeredFromUndo = false;
}
return bRetval;
}
else
{
// no undo triggered up to now, trigger local one
return SfxUndoManager::Undo();
}
}
bool SdrUndoManager::Redo()
{
bool bRetval(false);
if(isTextEditActive())
{
// we are in text edit mode
bRetval = EditUndoManager::Redo();
}
if(!bRetval)
{
// no redo triggered up to now, trigger local one
bRetval = SfxUndoManager::Redo();
}
return bRetval;
}
void SdrUndoManager::Clear()
{
if(isTextEditActive())
{
while(GetUndoActionCount() && mpLastUndoActionBeforeTextEdit != GetUndoAction(0))
{
RemoveLastUndoAction();
}
// urgently needed: RemoveLastUndoAction does NOT correct the Redo stack by itself (!)
ClearRedo();
}
else
{
// call parent
EditUndoManager::Clear();
}
}
void SdrUndoManager::SetEndTextEditHdl(const Link& rLink)
{
maEndTextEditHdl = rLink;
if(isTextEditActive())
{
// text edit start, remember last non-textedit action for later cleanup
mpLastUndoActionBeforeTextEdit = GetUndoActionCount() ? GetUndoAction(0) : 0;
}
else
{
// text edit ends, pop all textedit actions up to the remembered non-textedit action from the start
// to set back the UndoManager to the state before text edit started. If that action is already gone
// (due to being removed from the undo stack in the meantime), all need to be removed anyways
while(GetUndoActionCount() && mpLastUndoActionBeforeTextEdit != GetUndoAction(0))
{
RemoveLastUndoAction();
}
// urgently needed: RemoveLastUndoAction does NOT correct the Redo stack by itself (!)
ClearRedo();
// forget marker again
mpLastUndoActionBeforeTextEdit = 0;
}
}
bool SdrUndoManager::isTextEditActive() const
{
return maEndTextEditHdl.IsSet();
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
