13
0
livetrax/libs/gtkmm2/gtk/gtkmm/treeiter.cc

396 lines
9.3 KiB
C++
Raw Normal View History

// Generated by gtkmmproc -- DO NOT MODIFY!
#include <gtkmm/treeiter.h>
#include <gtkmm/private/treeiter_p.h>
// -*- c++ -*-
/* $Id$ */
/* Copyright 1998-2002 The gtkmm Development Team
*
* 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; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <gtkmm/treemodel.h>
namespace
{
// This is copied from Totem. In future there might be a version in GTK+ itself - see bug #
void gtkmm_gtk_tree_model_iter_previous(GtkTreeModel* tree_model, GtkTreeIter* iter)
{
GtkTreePath *const path = gtk_tree_model_get_path(tree_model, iter);
if(gtk_tree_path_prev(path))
gtk_tree_model_get_iter(tree_model, iter, path);
else
g_assert_not_reached();
gtk_tree_path_free(path);
}
} // anonymous namespace
namespace Gtk
{
/**** Gtk::TreeIter ********************************************************/
TreeIter::TreeIter()
:
TreeIterBase(),
model_ (0),
is_end_ (false)
{}
TreeIter::TreeIter(TreeModel* model)
:
TreeIterBase(),
model_ (model),
is_end_ (false)
{}
TreeIter::TreeIter(GtkTreeModel* model, const GtkTreeIter* iter)
:
TreeIterBase(iter),
model_ (dynamic_cast<TreeModel*>(Glib::wrap_auto((GObject*) model))),
is_end_ (iter == 0)
{}
TreeIter& TreeIter::operator++()
{
g_assert(!is_end_);
GtkTreeIter previous = gobject_;
if(!gtk_tree_model_iter_next(model_->gobj(), &gobject_))
{
is_end_ = true;
gtk_tree_model_iter_parent(model_->gobj(), &gobject_, &previous);
}
return *this;
}
const TreeIter TreeIter::operator++(int)
{
g_assert(!is_end_);
TreeIter previous (*this);
if(!gtk_tree_model_iter_next(model_->gobj(), &gobject_))
{
is_end_ = true;
gtk_tree_model_iter_parent(model_->gobj(), &gobject_, &previous.gobject_);
}
return previous;
}
TreeIter& TreeIter::operator--()
{
if(!is_end_)
{
gtkmm_gtk_tree_model_iter_previous(model_->gobj(), &gobject_);
}
else // --end yields last
{
GtkTreeIter next = gobject_;
GtkTreeIter *const parent = (next.stamp != 0) ? &next : 0;
const int index = gtk_tree_model_iter_n_children(model_->gobj(), parent) - 1;
is_end_ = !gtk_tree_model_iter_nth_child(model_->gobj(), &gobject_, parent, index);
g_assert(!is_end_);
}
return *this;
}
const TreeIter TreeIter::operator--(int)
{
TreeIter next (*this);
if(!is_end_)
{
gtkmm_gtk_tree_model_iter_previous(model_->gobj(), &gobject_);
}
else // --end yields last
{
GtkTreeIter *const parent = (next.gobject_.stamp != 0) ? &next.gobject_ : 0;
const int index = gtk_tree_model_iter_n_children(model_->gobj(), parent) - 1;
is_end_ = !gtk_tree_model_iter_nth_child(model_->gobj(), &gobject_, parent, index);
g_assert(!is_end_);
}
return next;
}
/* There is no public gtk_tree_iter_equal(), so we must write our own.
*/
bool TreeIter::equal(const TreeIter& other) const
{
g_assert(model_ == other.model_);
// A GtkTreeIter has the same stamp value as its model.
g_assert(gobject_.stamp == other.gobject_.stamp || is_end_ || other.is_end_);
//TODO: Allow custom treemodels to provide a different implementation.
// If all user_data pointers are equal we can assume the iterators to be
// equal. This should be safe since GtkTreeIter lacks destroy notification,
// thus there is no way to attach more data fields to the iterator.
return (is_end_ == other.is_end_) &&
(gobject_.user_data == other.gobject_.user_data) &&
(gobject_.user_data2 == other.gobject_.user_data2) &&
(gobject_.user_data3 == other.gobject_.user_data3);
}
TreeIter::operator bool() const
{
// Test whether the GtkTreeIter is valid and not an end iterator. This check
// is almost the same as the private VALID_ITER() macro in gtkliststore.c and
// gtktreestore.c.
return (!is_end_ && gobject_.stamp != 0);
}
void TreeIter::setup_end_iterator(const TreeIter& last_valid)
{
g_assert(model_ == last_valid.model_);
if(last_valid.is_end_)
gobject_ = last_valid.gobject_;
else
gtk_tree_model_iter_parent(model_->gobj(), &gobject_, const_cast<GtkTreeIter*>(&last_valid.gobject_));
is_end_ = true;
}
void TreeIter::set_model_refptr(const Glib::RefPtr<TreeModel>& model)
{
model_ = model.operator->();
}
void TreeIter::set_model_gobject(GtkTreeModel* model)
{
model_ = dynamic_cast<TreeModel*>(Glib::wrap_auto((GObject*) model));
}
GtkTreeModel* TreeIter::get_model_gobject() const
{
return (model_) ? model_->gobj() : 0;
}
int TreeIter::get_stamp() const
{
return gobj()->stamp;
}
void TreeIter::set_stamp(int stamp)
{
gobj()->stamp = stamp;
}
/**** Gtk::TreeRow *********************************************************/
const TreeNodeChildren& TreeRow::children() const
{
g_assert(!is_end_);
return static_cast<const TreeNodeChildren&>(static_cast<const TreeIter&>(*this));
}
TreeIter TreeRow::parent() const
{
TreeIter iter (model_);
if(is_end_)
iter.gobject_ = gobject_;
else
gtk_tree_model_iter_parent(model_->gobj(), iter.gobj(), const_cast<GtkTreeIter*>(&gobject_));
return iter;
}
void TreeRow::set_value_impl(int column, const Glib::ValueBase& value) const
{
model_->set_value_impl(*this, column, value);
}
void TreeRow::get_value_impl(int column, Glib::ValueBase& value) const
{
model_->get_value_impl(*this, column, value);
}
TreeRow::operator bool() const
{
return TreeIter::operator bool();
}
/**** Gtk::TreeNodeChildren ************************************************/
TreeNodeChildren::iterator TreeNodeChildren::begin()
{
iterator iter (model_);
// If the iterator is invalid (stamp == 0), assume a 'virtual' toplevel
// node. This behaviour is needed to implement Gtk::TreeModel::children().
if(gobject_.stamp != 0)
{
if(!gtk_tree_model_iter_children(model_->gobj(), iter.gobj(), const_cast<GtkTreeIter*>(&gobject_)))
{
// Assign the already known parent, in order to create an end iterator.
iter.gobject_ = gobject_;
iter.is_end_ = true;
}
}
else
{
if(!gtk_tree_model_get_iter_first(model_->gobj(), iter.gobj()))
{
// No need to copy the GtkTreeIter, since iter.gobject_ is already empty.
iter.is_end_ = true;
}
}
return iter;
}
TreeNodeChildren::const_iterator TreeNodeChildren::begin() const
{
//TODO: Reduce the copy/paste from the non-const begin()?
const_iterator iter (model_);
// If the iterator is invalid (stamp == 0), assume a 'virtual' toplevel
// node. This behaviour is needed to implement Gtk::TreeModel::children().
if(gobject_.stamp != 0)
{
if(!gtk_tree_model_iter_children(model_->gobj(), iter.gobj(), const_cast<GtkTreeIter*>(&gobject_)))
{
// Assign the already known parent, in order to create an end iterator.
iter.gobject_ = gobject_;
iter.is_end_ = true;
}
}
else
{
if(!gtk_tree_model_get_iter_first(model_->gobj(), iter.gobj()))
{
// No need to copy the GtkTreeIter, since iter.gobject_ is already empty.
iter.is_end_ = true;
}
}
return iter;
}
TreeNodeChildren::iterator TreeNodeChildren::end()
{
// Just copy the parent, and turn it into an end iterator.
iterator iter (*this);
iter.is_end_ = true;
return iter;
}
TreeNodeChildren::const_iterator TreeNodeChildren::end() const
{
// Just copy the parent, and turn it into an end iterator.
const_iterator iter (*this);
iter.is_end_ = true;
return iter;
}
TreeNodeChildren::value_type TreeNodeChildren::operator[](TreeNodeChildren::size_type index) const
{
iterator iter (model_);
GtkTreeIter *const parent = const_cast<GtkTreeIter*>(get_parent_gobject());
if(!gtk_tree_model_iter_nth_child(model_->gobj(), iter.gobj(), parent, index))
{
// Assign the already known parent, in order to create an end iterator.
iter.gobject_ = gobject_;
iter.is_end_ = true;
}
return *iter;
}
TreeNodeChildren::size_type TreeNodeChildren::size() const
{
GtkTreeIter *const parent = const_cast<GtkTreeIter*>(get_parent_gobject());
return gtk_tree_model_iter_n_children(model_->gobj(), parent);
}
bool TreeNodeChildren::empty() const
{
// If the iterator is invalid (stamp == 0), assume a 'virtual' toplevel
// node. This behaviour is needed to implement Gtk::TreeModel::children().
if(gobject_.stamp == 0)
{
GtkTreeIter dummy;
return !gtk_tree_model_get_iter_first(model_->gobj(), &dummy);
}
return !gtk_tree_model_iter_has_child(model_->gobj(), const_cast<GtkTreeIter*>(&gobject_));
}
} // namespace Gtk
namespace
{
} // anonymous namespace
namespace Gtk
{
// static
GType TreeIterBase::get_type()
{
return gtk_tree_iter_get_type();
}
TreeIterBase::TreeIterBase()
{
GLIBMM_INITIALIZE_STRUCT(gobject_, GtkTreeIter);
}
TreeIterBase::TreeIterBase(const GtkTreeIter* gobject)
{
if(gobject)
gobject_ = *gobject;
else
GLIBMM_INITIALIZE_STRUCT(gobject_, GtkTreeIter);
}
} // namespace Gtk