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// pkg_tree.h -*-c++-*-
//
// Copyright 1999-2002, 2004-2005, 2008 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.
//
#ifndef PKG_TREE_H
#define PKG_TREE_H
#include "apt_undo_tree.h"
#include <apt-pkg/pkgcache.h>
/** \brief Uses the cwidget::widgets::tree classes to display a tree containing packages
*
*
* Uses the cwidget::widgets::tree classes to display a tree containing packages. A generic
* version of this, suitable only for displaying the current state of the
* package cache, is provided; it can be extended as needed.
*
* \file pkg_tree.h
*/
class OpProgress;
class pkg_grouppolicy;
class pkg_grouppolicy_factory;
class pkg_sortpolicy;
class pkg_tree_node;
class undo_group;
class pkg_tree:public apt_undo_tree
{
/** If \b true, the tree is fully initialized: in particular,
* the cache-reload signals are connected up.
*/
bool initialized;
pkg_grouppolicy_factory *grouping;
std::string groupingstr;
pkg_sortpolicy *sorting;
aptitude::matching::pkg_matcher *limit;
std::wstring limitstr;
// Defines the limits on the display (what packages will be allowed
// to be displayed) This could be a grouping policy, but hardcoding the
// filter here makes it easier to alter from the UI.
static cwidget::widgets::editline::history_list limit_history, grouping_history,
sorting_history;
void handle_cache_close();
/** Set up the limit and handle a few other things. */
void init(const char *limitstr);
protected:
virtual bool handle_key(const cwidget::config::key &k);
pkg_tree(const std::string &groupingstr,
pkg_grouppolicy_factory *_grouping,
const std::wstring &limitstr);
pkg_tree(const std::string &groupingstr,
pkg_grouppolicy_factory *_grouping);
public:
/** Initialize a package tree, but don't build it. The caller
* should call build_tree(). The main reason to do this is so you
* can connect up the tree's signals before building it.
*/
static cwidget::util::ref_ptr<pkg_tree>
create(const std::string &groupingstr,
pkg_grouppolicy_factory *grouping,
const std::wstring &limitstr)
{
cwidget::util::ref_ptr<pkg_tree> rval(new pkg_tree(groupingstr, grouping, limitstr));
rval->decref();
return rval;
}
/** Initialize a package tree, but don't build it. The caller
* should call build_tree(). The main reason to do this is so you
* can connect up the tree's signals before building it.
*
* The default tree limit is used.
*/
static cwidget::util::ref_ptr<pkg_tree>
create(const std::string &groupingstr,
pkg_grouppolicy_factory *grouping)
{
cwidget::util::ref_ptr<pkg_tree> rval(new pkg_tree(groupingstr, grouping));
rval->decref();
return rval;
}
// Should you be able to just pass in a string (?)
~pkg_tree();
/** Rebuilds the tree. If the new tree would be empty, keeps the
* current tree and returns \b false.
*
* \param progress a progress bar with which to show the progress
* of the rebuild.
*
* \return true iff the rebuild was successful.
*/
bool build_tree(OpProgress &progress);
/** Rebuilds the tree. If the new tree would be empty, keeps the
* current tree and returns \b false. Generates a new progress bar
* using gen_progress_bar().
*
* \return true iff the rebuild was successful.
*/
bool build_tree();
void set_grouping(pkg_grouppolicy_factory *_grouping);
void set_grouping(const std::wstring &s);
void set_sorting(pkg_sortpolicy *_sorting);
void set_sorting(const std::wstring &s);
void set_limit(const std::wstring &_limit);
// Selects a new limit and rebuilds the tree.
std::wstring get_limit_str() {return limitstr;}
/** Return \b true. */
bool find_limit_enabled();
/** Pop up the limit selection dialog. */
bool find_limit();
/** Return \b true if a limit is already set. */
bool find_reset_limit_enabled();
/** Reset the limit. */
bool find_reset_limit();
// Local bindings:
static cwidget::config::keybindings *bindings;
static void init_bindings();
sigc::signal2<void, const pkgCache::PkgIterator &, const pkgCache::VerIterator &> selected_signal;
sigc::signal1<void, std::wstring> selected_desc_signal;
};
typedef cwidget::util::ref_ptr<pkg_tree> pkg_tree_ref;
#endif
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