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///////////////////////////////////////////////////////////////////////////////
// Name: wx/gtk/private/treeview.h
// Purpose: Private helpers for wxGTK controls using GtkTreeView
// Author: Vadim Zeitlin
// Created: 2016-02-06 (extracted from src/gtk/dataview.cpp)
// Copyright: (c) 2016 Vadim Zeitlin <vadim@wxwidgets.org>
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef _GTK_PRIVATE_TREEVIEW_H_
#define _GTK_PRIVATE_TREEVIEW_H_
// ----------------------------------------------------------------------------
// wxGtkTreePath: RAII wrapper for GtkTreePath
// ----------------------------------------------------------------------------
// Usually this object is initialized with the associated GtkTreePath
// immediately when it's constructed but it can also be changed later either by
// using Assign() or by getting the pointer to the internally stored pointer
// value using ByRef(). The latter should be avoided but is very convenient
// when using GTK functions with GtkTreePath output parameters.
class wxGtkTreePath
{
public:
// Ctor takes ownership of the given path and will free it if non-NULL.
wxGtkTreePath(GtkTreePath *path = NULL) : m_path(path) { }
// Creates a tree path for the given string path.
wxGtkTreePath(const gchar *strpath)
: m_path(gtk_tree_path_new_from_string(strpath))
{
}
// Set the stored pointer if not done by ctor.
void Assign(GtkTreePath *path)
{
wxASSERT_MSG( !m_path, "shouldn't be already initialized" );
m_path = path;
}
// Return the pointer to the internally stored pointer. This should only be
// used to initialize the object by passing it to some GTK function.
GtkTreePath **ByRef()
{
wxASSERT_MSG( !m_path, "shouldn't be already initialized" );
return &m_path;
}
operator GtkTreePath *() const { return m_path; }
~wxGtkTreePath() { if ( m_path ) gtk_tree_path_free(m_path); }
private:
GtkTreePath *m_path;
wxDECLARE_NO_COPY_CLASS(wxGtkTreePath);
};
#endif // _GTK_PRIVATE_TREEVIEW_H_
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