598 lines
23 KiB
C++
598 lines
23 KiB
C++
// -*- c++ -*-
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// Generated by gtkmmproc -- DO NOT MODIFY!
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#ifndef _GTKMM_TREEMODEL_H
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#define _GTKMM_TREEMODEL_H
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#include <glibmm.h>
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/* $Id$ */
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/* Copyright (C) 1998-2002 The gtkmm Development Team
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <gtk/gtktreemodel.h>
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#include <glibmm/interface.h>
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#include <gtkmm/treeiter.h>
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#include <gtkmm/treemodelcolumn.h>
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#ifndef DOXYGEN_SHOULD_SKIP_THIS
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typedef struct _GtkTreeModel GtkTreeModel;
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typedef struct _GtkTreeModelClass GtkTreeModelClass;
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#endif /* DOXYGEN_SHOULD_SKIP_THIS */
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namespace Gtk
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{ class TreeModel_Class; } // namespace Gtk
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namespace Gtk
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{
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class TreeModelSort;
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class TreePath;
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class TreeRowReference;
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/** @addtogroup gtkmmEnums Enums and Flags */
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/**
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* @ingroup gtkmmEnums
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* @par Bitwise operators:
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* <tt>%TreeModelFlags operator|(TreeModelFlags, TreeModelFlags)</tt><br>
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* <tt>%TreeModelFlags operator&(TreeModelFlags, TreeModelFlags)</tt><br>
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* <tt>%TreeModelFlags operator^(TreeModelFlags, TreeModelFlags)</tt><br>
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* <tt>%TreeModelFlags operator~(TreeModelFlags)</tt><br>
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* <tt>%TreeModelFlags& operator|=(TreeModelFlags&, TreeModelFlags)</tt><br>
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* <tt>%TreeModelFlags& operator&=(TreeModelFlags&, TreeModelFlags)</tt><br>
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* <tt>%TreeModelFlags& operator^=(TreeModelFlags&, TreeModelFlags)</tt><br>
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*/
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enum TreeModelFlags
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{
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TREE_MODEL_ITERS_PERSIST = 1 << 0,
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TREE_MODEL_LIST_ONLY = 1 << 1
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};
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/** @ingroup gtkmmEnums */
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inline TreeModelFlags operator|(TreeModelFlags lhs, TreeModelFlags rhs)
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{ return static_cast<TreeModelFlags>(static_cast<unsigned>(lhs) | static_cast<unsigned>(rhs)); }
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/** @ingroup gtkmmEnums */
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inline TreeModelFlags operator&(TreeModelFlags lhs, TreeModelFlags rhs)
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{ return static_cast<TreeModelFlags>(static_cast<unsigned>(lhs) & static_cast<unsigned>(rhs)); }
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/** @ingroup gtkmmEnums */
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inline TreeModelFlags operator^(TreeModelFlags lhs, TreeModelFlags rhs)
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{ return static_cast<TreeModelFlags>(static_cast<unsigned>(lhs) ^ static_cast<unsigned>(rhs)); }
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/** @ingroup gtkmmEnums */
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inline TreeModelFlags operator~(TreeModelFlags flags)
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{ return static_cast<TreeModelFlags>(~static_cast<unsigned>(flags)); }
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/** @ingroup gtkmmEnums */
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inline TreeModelFlags& operator|=(TreeModelFlags& lhs, TreeModelFlags rhs)
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{ return (lhs = static_cast<TreeModelFlags>(static_cast<unsigned>(lhs) | static_cast<unsigned>(rhs))); }
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/** @ingroup gtkmmEnums */
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inline TreeModelFlags& operator&=(TreeModelFlags& lhs, TreeModelFlags rhs)
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{ return (lhs = static_cast<TreeModelFlags>(static_cast<unsigned>(lhs) & static_cast<unsigned>(rhs))); }
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/** @ingroup gtkmmEnums */
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inline TreeModelFlags& operator^=(TreeModelFlags& lhs, TreeModelFlags rhs)
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{ return (lhs = static_cast<TreeModelFlags>(static_cast<unsigned>(lhs) ^ static_cast<unsigned>(rhs))); }
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} // namespace Gtk
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#ifndef DOXYGEN_SHOULD_SKIP_THIS
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namespace Glib
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{
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template <>
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class Value<Gtk::TreeModelFlags> : public Glib::Value_Flags<Gtk::TreeModelFlags>
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{
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public:
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static GType value_type() G_GNUC_CONST;
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};
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} // namespace Glib
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#endif /* DOXYGEN_SHOULD_SKIP_THIS */
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namespace Gtk
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{
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//TODO: Remove any mention of null arguments from the method documentation, by adding overrides in gtk_docs_override.xml.
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/** This class defines a generic tree interface for use by the Gtk::TreeView widget.
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* @ingroup TreeView
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*
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* It is is designed to be usable with any appropriate data structure. The
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* programmer just has to implement this interface on their own data type for
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* it to be viewable by a Gtk::TreeView widget.
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*
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* The model is represented as a hierarchical tree of strongly-typed, columned
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* data. In other words, the model can be seen as a tree where every node has
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* different values depending on which column is being queried. The type of
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* data found in a column is determined by TreeModel::Column<> templates.
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* The types are homogeneous per column across all nodes. It is important to note that this
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* interface only provides a way of examining a model and observing changes.
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* The implementation of each individual model decides how and if changes are
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* made.
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*
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* In order to make life simpler for programmers who do not need to write their
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* own specialized model, two generic models are provided - the Gtk::TreeStore
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* and the Gtk::ListStore. To use these, the developer simply pushes data into
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* these models as necessary. These models provide the data structure as well
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* as all appropriate tree interfaces. As a result, implementing drag and drop,
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* sorting, and storing data is trivial. For the vast majority of trees and
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* lists, these two models are sufficient.
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*
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* Models are accessed on a node/column level of granularity. One can query for
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* the value of a model at a certain node and a certain column on that node.
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* There are two structures used to reference a particular node in a model.
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* They are the @link Gtk::TreePath Path@endlink and the iterator. Most of the interface consists of
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* operations on an @link Gtk::TreeIter iterator@endlink.
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*
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* A @link Gtk::TreePath Gtk::TreeModel::Path@endlink is essentially a potential node. It is a location on a model that may
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* or may not actually correspond to a node on a specific model.
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*
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* By contrast, an @link Gtk::TreeIter Gtk::TreeModel::iterator@endlink is a reference to a specific node on a specific
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* model. One can convert a path to an @link Gtk::TreeIter iterator@endlink by calling Gtk::TreeModel::get_iter().
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* These iterators are the primary way of accessing a model and are similar to the iterators
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* used by Gtk::TextBuffer. The model interface defines a set of operations
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* using them for navigating the model.
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*
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* The @link Gtk::TreeRowReference RowReference@endlink is also useful, because it remains
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* valid as long as there is an existing row pointed to by it's path. You can convert between RowReferences and iterators and @link Gtk::TreePath Path@endlink s.
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*/
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class TreeModel : public Glib::Interface
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{
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#ifndef DOXYGEN_SHOULD_SKIP_THIS
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public:
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typedef TreeModel CppObjectType;
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typedef TreeModel_Class CppClassType;
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typedef GtkTreeModel BaseObjectType;
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typedef GtkTreeModelIface BaseClassType;
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private:
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friend class TreeModel_Class;
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static CppClassType treemodel_class_;
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// noncopyable
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TreeModel(const TreeModel&);
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TreeModel& operator=(const TreeModel&);
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protected:
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TreeModel(); // you must derive from this class
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explicit TreeModel(GtkTreeModel* castitem);
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#endif /* DOXYGEN_SHOULD_SKIP_THIS */
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public:
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virtual ~TreeModel();
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static void add_interface(GType gtype_implementer);
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#ifndef DOXYGEN_SHOULD_SKIP_THIS
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static GType get_type() G_GNUC_CONST;
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static GType get_base_type() G_GNUC_CONST;
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#endif
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///Provides access to the underlying C GObject.
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GtkTreeModel* gobj() { return reinterpret_cast<GtkTreeModel*>(gobject_); }
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///Provides access to the underlying C GObject.
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const GtkTreeModel* gobj() const { return reinterpret_cast<GtkTreeModel*>(gobject_); }
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private:
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public:
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typedef TreeModelColumnRecord ColumnRecord;
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typedef TreeNodeChildren Children;
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typedef Children::iterator iterator;
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typedef Children::reverse_iterator reverse_iterator;
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typedef Children::const_iterator const_iterator;
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typedef Children::const_reverse_iterator const_reverse_iterator;
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typedef TreeRow Row;
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typedef TreePath Path;
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typedef TreeRowReference RowReference;
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//These are part of GtkTreeModelFilter or GtkTreeModelSort, not GtkTreeModel:
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/** Returns a valid iterator pointing to @a path.
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*
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* @param path The @link Gtk::TreePath Gtk::TreeModel::Path@endlink.
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* @result A valid iterator pointing to the path, or an invalid iterator if that is not possible.
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*/
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iterator get_iter(const Path& path);
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//TODO: Add const_iterator get_iter(const Path& path) const;
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//Implement a const_iterator?
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/** Returns a valid iterator pointing to @a path_string.
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*
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* @param path_string The path, as a string representation.
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* @result A valid iterator pointing to the path, or an invalid iterator if that is not possible.
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*/
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iterator get_iter(const Glib::ustring& path_string);
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//TODO: Implement a const_iterator? const_iterator get_iter(const Glib::ustring& path_string) const;
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///This returns an STL-like container API, for iterating over the rows.
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Children children();
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//TODO: Return a real TreeNodeChildren (a container of const_iterators), when we have a real const_iterator.
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///This returns an STL-like container API, for iterating over the rows.
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Children children() const;
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/** For example,
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* void on_foreach(const Gtk::TreeModel::iterator& iter);
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*
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* If the callback function returns true, then the tree ceases to be walked, and foreach() returns.
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*/
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typedef sigc::slot<bool, const TreeModel::iterator&> SlotForeachIter;
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/** Calls a callback slot on each node in the model in a depth-first fashion.
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* If the callback function returns true, then the tree ceases to be walked, and foreach() returns.
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*
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* @param slot The function to call for each selected node.
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*/
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void foreach_iter(const SlotForeachIter& slot);
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/** For example,
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* void on_foreach(const Gtk::TreeModel::Path& path);
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*
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* If the callback function returns true, then the tree ceases to be walked, and foreach() returns.
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*/
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typedef sigc::slot<bool, const TreeModel::Path&> SlotForeachPath;
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/** Calls a callback slot on each node in the model in a depth-first fashion.
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* If the callback function returns true, then the tree ceases to be walked, and foreach() returns.
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*
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* @param slot The function to call for each selected node.
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*/
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void foreach_path(const SlotForeachPath& slot);
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/** For example,
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* void on_foreach(const Gtk::TreeModel::Path& path, const Gtk::TreeModel::iterator& iter);
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*
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* If the callback function returns true, then the tree ceases to be walked, and foreach() returns.
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*/
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typedef sigc::slot<bool, const TreeModel::Path&, const TreeModel::iterator&> SlotForeachPathAndIter;
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/** Calls a callback slot on each node in the model in a depth-first fashion.
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* If the callback function returns true, then the tree ceases to be walked, and foreach() returns.
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*
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* @param slot The function to call for each selected node.
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*/
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void foreach(const SlotForeachPathAndIter& slot);
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/** Returns a set of flags supported by this interface. The flags are a bitwise
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* combination of Gtk::TreeModelFlags. The flags supported should not change
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* during the lifecycle of the tree_model.
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* @return The flags supported by this interface.
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*/
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TreeModelFlags get_flags() const;
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/** Returns the number of columns supported by @a tree_model .
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* @return The number of columns.
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*/
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int get_n_columns() const;
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/** Returns the type of the column.
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* @param index The column index.
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* @return The type of the column.
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*/
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GType get_column_type(int index) const;
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//TODO: A C++-type version of get_column_type()?
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/** Returns a Gtk::TreePath referenced by @a iter .
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* @param iter The Gtk::TreeIter.
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* @return A Gtk::TreePath.
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*/
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TreeModel::Path get_path(const iterator& iter) const;
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/** Emits the "row_changed" signal on @a tree_model .
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* @param path A Gtk::TreePath pointing to the changed row.
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* @param iter A valid Gtk::TreeIter pointing to the changed row.
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*/
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void row_changed(const Path& path, const iterator& iter);
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/** Emits the "row_inserted" signal on @a tree_model
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* @param path A Gtk::TreePath pointing to the inserted row.
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* @param iter A valid Gtk::TreeIter pointing to the inserted row.
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*/
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void row_inserted(const Path& path, const iterator& iter);
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/** Emits the "row_has_child_toggled" signal on @a tree_model . This should be
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* called by models after the child state of a node changes.
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* @param path A Gtk::TreePath pointing to the changed row.
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* @param iter A valid Gtk::TreeIter pointing to the changed row.
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*/
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void row_has_child_toggled(const Path& path, const iterator& iter);
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/** Emits the "row_deleted" signal on @a tree_model . This should be called by
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* models after a row has been removed. The location pointed to by @a path should
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* be the location that the row previously was at. It may not be a valid
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* location anymore.
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* @param path A Gtk::TreePath pointing to the previous location of the deleted row.
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*/
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void row_deleted(const Path& path);
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void rows_reordered(const Path& path, const iterator& iter, const Glib::ArrayHandle<int>& new_order);
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/** Emits the "rows_reordered" signal on @a tree_model . This should be called by
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* models when their rows have been reordered.
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* @param path A Gtk::TreePath pointing to the tree node whose children have been reordered.
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* @param iter A valid Gtk::TreeIter pointing to the node whose children have been reordered.
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* @param new_order An array of integers mapping the current position of each child
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* to its old position before the re-ordering,
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* i.e. @a new_order <tt>[newpos] = oldpos</tt>.
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*/
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void rows_reordered(const Path& path, const iterator& iter, int* new_order);
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/** Generates a string representation of the iter. This string is a ':'
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* separated list of numbers. For example, "4:10:0:3" would be an
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* acceptable return value for this string.
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* @param iter An Gtk::TreeIter.
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* @return The string.
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*
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* Since: 2.2.
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*/
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Glib::ustring get_string(const iterator& iter) const;
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Glib::SignalProxy2< void,const TreeModel::Path&,const TreeModel::iterator& > signal_row_changed();
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Glib::SignalProxy2< void,const TreeModel::Path&,const TreeModel::iterator& > signal_row_inserted();
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Glib::SignalProxy2< void,const TreeModel::Path&,const TreeModel::iterator& > signal_row_has_child_toggled();
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Glib::SignalProxy1< void,const TreeModel::Path& > signal_row_deleted();
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Glib::SignalProxy3< void,const TreeModel::Path&,const TreeModel::iterator&,int* > signal_rows_reordered();
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protected:
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virtual TreeModelFlags get_flags_vfunc() const;
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virtual int get_n_columns_vfunc() const;
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virtual GType get_column_type_vfunc(int index) const;
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//These are only for deriving new TreeModels, which isn't very common or easy:
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/** Override and implement this in a derived TreeModel class.
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* Sets @a iter_next to refer to the node following @a iter it at the current level.
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* If there is no next iter, false is returned and iter_next is set to be invalid.
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*
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* @param iter An iterator.
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* @param iter_next An iterator that will be set to refer to the next node, or will be set as invalid.
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* @result true if the operation was possible.
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*/
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virtual bool iter_next_vfunc(const iterator& iter, iterator& iter_next) const;
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/** Override and implement this in a derived TreeModel class.
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* Sets @a iter to a valid iterator pointing to @a path
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*
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* @param path An path to a node.
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* @param iter An iterator that will be set to refer to a node to the path, or will be set as invalid.
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* @result true if the operation was possible.
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*/
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virtual bool get_iter_vfunc(const Path& path, iterator& iter) const;
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/** Override and implement this in a derived TreeModel class.
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* Sets @a iter to refer to the first child of @a parent. If @a parent has no children,
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* false is returned and @a iter is set to be invalid.
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*
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* @param parent An iterator.
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* @param iter An iterator that will be set to refer to the firt child node, or will be set as invalid.
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* @result true if the operation was possible.
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*/
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virtual bool iter_children_vfunc(const iterator& parent, iterator& iter) const;
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/** Override and implement this in a derived TreeModel class.
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* Sets @a iter to be the parent of @a child. If @a child is at the toplevel, and
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* doesn't have a parent, then @a iter is set to an invalid iterator and false
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* is returned.
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*
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* @param child An iterator.
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* @param iter An iterator that will be set to refer to the parent node, or will be set as invalid.
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* @result true if the operation was possible.
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*/
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virtual bool iter_parent_vfunc(const iterator& child, iterator& iter) const;
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/** Override and implement this in a derived TreeModel class.
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* Sets @a iter to be the child of @a parent using the given index. The first
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* index is 0. If @a n is too big, or @a parent has no children, @a iter is set
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* to an invalid iterator and false is returned.
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* See also iter_nth_root_child_vfunc()
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*
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* @param parent An iterator.
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* @param n The index of the child node to which @a iter should be set.
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* @param iter An iterator that will be set to refer to the nth node, or will be set as invalid.
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* @result true if the operation was possible.
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*/
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virtual bool iter_nth_child_vfunc(const iterator& parent, int n, iterator& iter) const;
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/** Override and implement this in a derived TreeModel class.
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* Sets @a iter to be the child of at the root level using the given index. The first
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* index is 0. If @a n is too big, or if there are no children, @a iter is set
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* to an invalid iterator and false is returned.
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* See also iter_nth_child_vfunc().
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*
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* @param n The index of the child node to which @a iter should be set.
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* @param iter An iterator that will be set to refer to the nth node, or will be set as invalid.
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* @result true if the operation was possible.
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*/
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virtual bool iter_nth_root_child_vfunc(int n, iterator& iter) const;
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/** Override and implement this in a derived TreeModel class.
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* Returns true if @a iter has children, false otherwise.
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*
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* @param iter The iterator to test for children.
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* @result true if @a iter has children.
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*/
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virtual bool iter_has_child_vfunc(const iterator& iter) const;
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/** Override and implement this in a derived TreeModel class.
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* Returns the number of children that @a iter has.
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* See also iter_n_root_children_vfunc().
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*
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* @param iter The iterator to test for children.
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* @result The number of children of @a iter.
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*/
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virtual int iter_n_children_vfunc(const iterator& iter) const;
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/** Override and implement this in a derived TreeModel class.
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* Returns the number of toplevel nodes.
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* See also iter_n_children().
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*
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* @result The number of children at the root level.
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*/
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virtual int iter_n_root_children_vfunc() const;
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/** Override and implement this in a derived TreeModel class.
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* Lets the tree ref the node. This is an optional method for models to
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* implement. To be more specific, models may ignore this call as it exists
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* primarily for performance reasons.
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*
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* This function is primarily meant as a way for views to let caching model know
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* when nodes are being displayed (and hence, whether or not to cache that
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* node.) For example, a file-system based model would not want to keep the
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* entire file-hierarchy in memory, just the sections that are currently being
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* displayed by every current view.
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*
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* A model should be expected to be able to get an iter independent of its
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* reffed state.
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*
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* @param iter the iterator.
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*/
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virtual void ref_node_vfunc(const iterator& iter) const;
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/** Override and implement this in a derived TreeModel class.
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* Lets the tree unref the node. This is an optional method for models to
|
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* implement. To be more specific, models may ignore this call as it exists
|
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* primarily for performance reasons.
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*
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* For more information on what this means, see unref_node_vfunc().
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* Please note that nodes that are deleted are not unreffed.
|
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*
|
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* @param iter the iterator.
|
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*/
|
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virtual void unref_node_vfunc(const iterator& iter) const;
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/** Override and implement this in a derived TreeModel class.
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* Returns a Path referenced by @a iter.
|
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*
|
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* @param iter The iterator.
|
|
* @result The path.
|
|
*/
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|
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virtual TreeModel::Path get_path_vfunc(const iterator& iter) const;
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|
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/** Override and implement this in a derived TreeModel class.
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* Initializes and sets @a value to that at @a column.
|
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*
|
|
* @param iter The iterator.
|
|
* @param column The column to lookup the value at.
|
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* @param value An empty Glib:Value to set.
|
|
*/
|
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virtual void get_value_vfunc(const iterator& iter, int column, Glib::ValueBase& value) const;
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/** Override and implement this in a derived TreeModel class.
|
|
* @note This virtual method is <em>deprecated</em>. If you want to check
|
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* whether an iterator is valid, call TreeStore::iter_is_valid(),
|
|
* ListStore::iter_is_valid() or TreeModelSort::iter_is_valid() directly
|
|
* instead. Because these methods are intended to be used only for debugging
|
|
* and/or testing purposes, it doesn't make sense to provide an abstract
|
|
* interface to them.
|
|
*
|
|
* @result true if the iterator is valid.
|
|
*
|
|
* @deprecated Use iter_is_valid() in the derived class.
|
|
*/
|
|
virtual bool iter_is_valid(const iterator& iter) const;
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|
|
//Called by TreeRow, which is a friend class:
|
|
//The comment about set_row_changed() in the documentation is based on my reading of the source of
|
|
//gtk_list_store_set_value() and gtk_tree_store_set_value().
|
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/** Override and implement this in a derived TreeModel class, so that Row::operator() and
|
|
* Row::set_value() work.
|
|
* You can probably just implement this by calling set_value_vfunc().
|
|
* Your implementation of set_value_impl() should also call set_row_changed() after changing the value.
|
|
*/
|
|
virtual void set_value_impl(const iterator& row, int column, const Glib::ValueBase& value);
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|
|
|
//This might not need to be virtual, but it's not a big deal. murrayc.
|
|
virtual void get_value_impl(const iterator& row, int column, Glib::ValueBase& value) const;
|
|
|
|
friend class Gtk::TreeModelSort;
|
|
friend class Gtk::TreeRow;
|
|
friend class Gtk::TreeIter;
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|
|
|
|
|
public:
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|
|
public:
|
|
//C++ methods used to invoke GTK+ virtual functions:
|
|
|
|
protected:
|
|
//GTK+ Virtual Functions (override these to change behaviour):
|
|
|
|
//Default Signal Handlers::
|
|
virtual void on_row_changed(const TreeModel::Path& path, const TreeModel::iterator& iter);
|
|
virtual void on_row_inserted(const TreeModel::Path& path, const TreeModel::iterator& iter);
|
|
virtual void on_row_has_child_toggled(const TreeModel::Path& path, const TreeModel::iterator& iter);
|
|
virtual void on_row_deleted(const TreeModel::Path& path);
|
|
virtual void on_rows_reordered(const TreeModel::Path& path, const TreeModel::iterator& iter, int* new_order);
|
|
|
|
|
|
};
|
|
|
|
} // namespace Gtk
|
|
|
|
|
|
namespace Glib
|
|
{
|
|
/** @relates Gtk::TreeModel
|
|
* @param object The C instance
|
|
* @param take_copy False if the result should take ownership of the C instance. True if it should take a new copy or ref.
|
|
* @result A C++ instance that wraps this C instance.
|
|
*/
|
|
Glib::RefPtr<Gtk::TreeModel> wrap(GtkTreeModel* object, bool take_copy = false);
|
|
|
|
} // namespace Glib
|
|
|
|
#endif /* _GTKMM_TREEMODEL_H */
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|
|