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
|
// apt_info_tree.h -*-c++-*-
//
// Copyright 2000-2005 Daniel Burrows
//
// 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; see the file COPYING. If not, write to
// the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
//
// Abstracts a tree which displays information about a particular package (and
// optionally version). The only thing that's special about this class is
// that it can sanely restore its state after the apt cache has been flushed.
//
// IMPORTANT NOTE: this assumes that simply deleting its root will be enough
// to avoid segfaults while the cache is not valid. Children that need more
// assurances should connect to cache_closed themselves. (FIXME: add a hook
// in this class to avoid spiralling numbers of signal connections? Good or bad
// idea?)
#ifndef APT_INFO_TREE_H
#define APT_INFO_TREE_H
#include "apt_undo_tree.h"
#include <apt-pkg/pkgcache.h>
#include <string>
class apt_info_tree:public apt_undo_tree
{
std::string package, version;
// The package that should be used as the root, and the version to use
// Stored so we can cleanly handle list updates
sigc::signal2<void, const pkgCache::PkgIterator &, const pkgCache::VerIterator &> sig;
sigc::signal1<void, std::wstring> desc_sig;
void handle_cache_close();
protected:
void restore_state();
virtual vs_treeitem *setup_new_root(const pkgCache::PkgIterator &pkg,
const pkgCache::VerIterator &ver)=0;
public:
sigc::signal2<void, const pkgCache::PkgIterator &, const pkgCache::VerIterator &> *get_sig() {return &sig;}
sigc::signal1<void, std::wstring> *get_desc_sig() {return &desc_sig;}
apt_info_tree(const std::string &_package, const std::string &_version);
/** Repeats the 'highlighted' signal of the currently selected item.
* Call this after connecting the two signals above.
*/
void repeat_signal();
};
#endif
|
