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
|
/*
Copyright (c) 2007 Volker Krause <vkrause@kde.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "editorwatcher.h"
#include <config.h>
#include <kdebug.h>
#include <klocale.h>
#include <kmessagebox.h>
#include <kopenwith.h>
#include <kprocess.h>
#include <kuserprofile.h>
#include <tqsocketnotifier.h>
#include <cassert>
// inotify stuff taken from kdelibs/kio/kio/kdirwatch.cpp
#ifdef HAVE_SYS_INOTIFY
#include <sys/ioctl.h>
#include <sys/inotify.h>
#include <fcntl.h>
#elif HAVE_INOTIFY
#include <sys/ioctl.h>
#include <unistd.h>
#include <sys/inotify.h>
#include <sys/syscall.h>
#include <linux/types.h>
// Linux kernel headers are documented to not compile
#define _S390_BITOPS_H
#endif
using namespace KMail;
EditorWatcher::EditorWatcher(const KURL & url, const TQString &mimeType, bool openWith,
TQObject * parent, TQWidget *parentWidget) :
TQObject( parent ),
mUrl( url ),
mMimeType( mimeType ),
mOpenWith( openWith ),
mEditor( 0 ),
mParentWidget( parentWidget ),
mHaveInotify( false ),
mFileOpen( false ),
mEditorRunning( false ),
mFileModified( true ), // assume the worst unless we know better
mDone( false )
{
assert( mUrl.isLocalFile() );
connect( &mTimer, TQT_SIGNAL(timeout()), TQT_SLOT(checkEditDone()) );
}
bool EditorWatcher::start()
{
// find an editor
KURL::List list;
list.append( mUrl );
KService::Ptr offer = KServiceTypeProfile::preferredService( mMimeType, "Application" );
if ( mOpenWith || !offer ) {
KOpenWithDlg dlg( list, i18n("Edit with:"), TQString::null, 0 );
if ( !dlg.exec() )
return false;
offer = dlg.service();
if ( !offer )
return false;
}
#ifdef HAVE_INOTIFY
// monitor file
mInotifyFd = inotify_init();
if ( mInotifyFd > 0 ) {
mInotifyWatch = inotify_add_watch( mInotifyFd, mUrl.path().latin1(), IN_CLOSE | IN_OPEN | IN_MODIFY );
if ( mInotifyWatch >= 0 ) {
TQSocketNotifier *sn = new TQSocketNotifier( mInotifyFd, TQSocketNotifier::Read, this );
connect( sn, TQT_SIGNAL(activated(int)), TQT_SLOT(inotifyEvent()) );
mHaveInotify = true;
mFileModified = false;
}
} else {
kdWarning(5006) << k_funcinfo << "Failed to activate INOTIFY!" << endl;
}
#endif
// start the editor
TQStringList params = KRun::processDesktopExec( *offer, list, false );
mEditor = new KProcess( this );
*mEditor << params;
connect( mEditor, TQT_SIGNAL(processExited(KProcess*)), TQT_SLOT(editorExited()) );
if ( !mEditor->start() )
return false;
mEditorRunning = true;
mEditTime.start();
return true;
}
void EditorWatcher::inotifyEvent()
{
assert( mHaveInotify );
#ifdef HAVE_INOTIFY
int pending = -1;
char buffer[4096];
ioctl( mInotifyFd, FIONREAD, &pending );
while ( pending > 0 ) {
int size = read( mInotifyFd, buffer, QMIN( pending, (int)sizeof(buffer) ) );
pending -= size;
if ( size < 0 )
break; // error
int offset = 0;
while ( size > 0 ) {
struct inotify_event *event = (struct inotify_event *) &buffer[offset];
size -= sizeof( struct inotify_event ) + event->len;
offset += sizeof( struct inotify_event ) + event->len;
if ( event->mask & IN_OPEN )
mFileOpen = true;
if ( event->mask & IN_CLOSE )
mFileOpen = false;
if ( event->mask & IN_MODIFY )
mFileModified = true;
}
}
#endif
mTimer.start( 500, true );
}
void EditorWatcher::editorExited()
{
mEditorRunning = false;
mTimer.start( 500, true );
}
void EditorWatcher::checkEditDone()
{
if ( mEditorRunning || (mFileOpen && mHaveInotify) || mDone )
return;
// protect us against double-deletion by calling this method again while
// the subeventloop of the message box is running
mDone = true;
// nobody can edit that fast, we seem to be unable to detect
// when the editor will be closed
if ( mEditTime.elapsed() <= 3000 ) {
KMessageBox::information(
mParentWidget,
i18n( "KMail is unable to detect when the chosen editor is closed. "
"To avoid data loss, editing the attachment will be aborted." ),
i18n( "Unable to edit attachment" ),
"UnableToEditAttachment" );
}
emit editDone( this );
deleteLater();
}
#include "editorwatcher.moc"
|
