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dataview.cpp
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dataview.cpp
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/////////////////////////////////////////////////////////////////////////////
// Name: src/gtk/dataview.cpp
// Purpose: wxDataViewCtrl GTK+2 implementation
// Author: Robert Roebling
// Copyright: (c) 1998 Robert Roebling
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#if wxUSE_DATAVIEWCTRL
#include "wx/dataview.h"
#ifndef wxUSE_GENERICDATAVIEWCTRL
#ifndef WX_PRECOMP
#include "wx/log.h"
#include "wx/dcclient.h"
#include "wx/sizer.h"
#include "wx/settings.h"
#include "wx/crt.h"
#endif
#include "wx/stockitem.h"
#include "wx/popupwin.h"
#include "wx/listimpl.cpp"
#include "wx/gtk/dc.h"
#ifndef __WXGTK3__
#include "wx/gtk/dcclient.h"
#endif
#include <gtk/gtk.h>
#include "wx/gtk/private.h"
#include "wx/gtk/private/event.h"
#include "wx/gtk/private/gdkconv.h"
#include "wx/gtk/private/gtk2-compat.h"
#include "wx/gtk/private/list.h"
using namespace wxGTKImpl;
class wxGtkDataViewModelNotifier;
#ifdef __WXGTK3__
#define wxConstGdkRect const GdkRectangle
#else
#define wxConstGdkRect GdkRectangle
#endif
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
static wxDataViewCtrlInternal *gs_internal = NULL;
class wxGtkTreeModelNode;
extern "C" {
typedef struct _GtkWxTreeModel GtkWxTreeModel;
}
// ----------------------------------------------------------------------------
// wxGtkTreePath: self-destroying 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);
};
// ----------------------------------------------------------------------------
// wxGtkTreePathList: self-destroying list of GtkTreePath objects.
// ----------------------------------------------------------------------------
class wxGtkTreePathList : public wxGtkList
{
public:
// Ctor takes ownership of the list.
explicit wxGtkTreePathList(GList* list)
: wxGtkList(list)
{
}
~wxGtkTreePathList()
{
// Delete the list contents, wxGtkList will delete the list itself.
g_list_foreach(m_list, (GFunc)gtk_tree_path_free, NULL);
}
};
// ----------------------------------------------------------------------------
// wxGtkTreeSelectionLock: prevent selection from changing during the
// lifetime of this object
// ----------------------------------------------------------------------------
// Implementation note: it could be expected that setting the selection
// function in this class ctor and resetting it back to the old value in its
// dtor would work, However in GTK+2 gtk_tree_selection_get_select_function()
// can't be passed NULL (see https://bugzilla.gnome.org/show_bug.cgi?id=626276
// which was only fixed in 2.90.5-304-g316b9da) so we can't do this.
//
// Instead, we always use the selection function (which
// imposes extra overhead, albeit minimal one, on all selection operations) and
// just set/reset the flag telling it whether it should allow or forbid the
// selection.
//
// Also notice that currently only a single object of this class may exist at
// any given moment. It's just simpler like this and we don't need anything
// more for now.
extern "C" {
static
gboolean wxdataview_selection_func(GtkTreeSelection * WXUNUSED(selection),
GtkTreeModel * WXUNUSED(model),
GtkTreePath * WXUNUSED(path),
gboolean WXUNUSED(path_currently_selected),
gpointer data)
{
return data == NULL;
}
}
class wxGtkTreeSelectionLock
{
public:
wxGtkTreeSelectionLock(GtkTreeSelection *selection, bool& alreadySet)
: m_selection(selection)
{
wxASSERT_MSG( !ms_instance, "this class is not reentrant currently" );
ms_instance = this;
if ( !alreadySet )
{
alreadySet = true;
CheckCurrentSelectionFunc(NULL);
}
else
{
CheckCurrentSelectionFunc(wxdataview_selection_func);
}
// Pass some non-NULL pointer as "data" for the callback, it doesn't
// matter what it is as long as it's non-NULL.
gtk_tree_selection_set_select_function(selection,
wxdataview_selection_func,
this,
NULL);
}
~wxGtkTreeSelectionLock()
{
CheckCurrentSelectionFunc(wxdataview_selection_func);
gtk_tree_selection_set_select_function(m_selection,
wxdataview_selection_func,
NULL,
NULL);
ms_instance = NULL;
}
private:
void CheckCurrentSelectionFunc(GtkTreeSelectionFunc func)
{
// We can only use gtk_tree_selection_get_select_function() with 2.14+
// so check for its availability both during compile- and run-time.
#if GTK_CHECK_VERSION(2, 14, 0)
#ifndef __WXGTK3__
if ( gtk_check_version(2, 14, 0) != NULL )
return;
#endif
// If this assert is triggered, it means the code elsewhere has called
// gtk_tree_selection_set_select_function() but currently doing this
// breaks this class so the code here needs to be changed.
wxASSERT_MSG
(
gtk_tree_selection_get_select_function(m_selection) == func,
"selection function has changed unexpectedly, review this code!"
);
#endif // GTK+ 2.14+
wxUnusedVar(func);
}
static wxGtkTreeSelectionLock *ms_instance;
GtkTreeSelection * const m_selection;
wxDECLARE_NO_COPY_CLASS(wxGtkTreeSelectionLock);
};
wxGtkTreeSelectionLock *wxGtkTreeSelectionLock::ms_instance = NULL;
//-----------------------------------------------------------------------------
// wxDataViewCtrlInternal
//-----------------------------------------------------------------------------
WX_DECLARE_LIST(wxDataViewItem, ItemList);
WX_DEFINE_LIST(ItemList)
class wxDataViewCtrlInternal
{
public:
wxDataViewCtrlInternal( wxDataViewCtrl *owner, wxDataViewModel *wx_model );
~wxDataViewCtrlInternal();
// model iface
GtkTreeModelFlags get_flags();
gboolean get_iter( GtkTreeIter *iter, GtkTreePath *path );
GtkTreePath *get_path( GtkTreeIter *iter);
gboolean iter_next( GtkTreeIter *iter );
gboolean iter_children( GtkTreeIter *iter, GtkTreeIter *parent);
gboolean iter_has_child( GtkTreeIter *iter );
gint iter_n_children( GtkTreeIter *iter );
gboolean iter_nth_child( GtkTreeIter *iter, GtkTreeIter *parent, gint n );
gboolean iter_parent( GtkTreeIter *iter, GtkTreeIter *child );
// dnd iface
bool EnableDragSource( const wxDataFormat &format );
bool EnableDropTarget( const wxDataFormat &format );
gboolean row_draggable( GtkTreeDragSource *drag_source, GtkTreePath *path );
gboolean drag_data_delete( GtkTreeDragSource *drag_source, GtkTreePath* path );
gboolean drag_data_get( GtkTreeDragSource *drag_source, GtkTreePath *path,
GtkSelectionData *selection_data );
gboolean drag_data_received( GtkTreeDragDest *drag_dest, GtkTreePath *dest,
GtkSelectionData *selection_data );
gboolean row_drop_possible( GtkTreeDragDest *drag_dest, GtkTreePath *dest_path,
GtkSelectionData *selection_data );
// notifactions from wxDataViewModel
bool ItemAdded( const wxDataViewItem &parent, const wxDataViewItem &item );
bool ItemDeleted( const wxDataViewItem &parent, const wxDataViewItem &item );
bool ItemChanged( const wxDataViewItem &item );
bool ValueChanged( const wxDataViewItem &item, unsigned int model_column );
bool Cleared();
bool BeforeReset();
bool AfterReset();
void Resort();
// sorting interface
void SetSortOrder( GtkSortType sort_order ) { m_sort_order = sort_order; }
GtkSortType GetSortOrder() const { return m_sort_order; }
void SetSortColumn( int column ) { m_sort_column = column; }
int GetSortColumn() const { return m_sort_column; }
void SetDataViewSortColumn( wxDataViewColumn *column ) { m_dataview_sort_column = column; }
wxDataViewColumn *GetDataViewSortColumn() { return m_dataview_sort_column; }
bool IsSorted() const { return m_sort_column >= 0; }
// Should we be sorted either because we have a configured sort column or
// because we have a default sort order?
bool ShouldBeSorted() const
{
return IsSorted() || GetDataViewModel()->HasDefaultCompare();
}
// accessors
wxDataViewModel* GetDataViewModel() { return m_wx_model; }
const wxDataViewModel* GetDataViewModel() const { return m_wx_model; }
wxDataViewCtrl* GetOwner() { return m_owner; }
GtkWxTreeModel* GetGtkModel() { return m_gtk_model; }
// item can be deleted already in the model
int GetIndexOf( const wxDataViewItem &parent, const wxDataViewItem &item );
void OnInternalIdle();
protected:
void InitTree();
void ScheduleRefresh();
wxGtkTreeModelNode *FindNode( const wxDataViewItem &item );
wxGtkTreeModelNode *FindNode( GtkTreeIter *iter );
wxGtkTreeModelNode *FindParentNode( const wxDataViewItem &item );
wxGtkTreeModelNode *FindParentNode( GtkTreeIter *iter );
void BuildBranch( wxGtkTreeModelNode *branch );
private:
wxGtkTreeModelNode *m_root;
wxDataViewModel *m_wx_model;
GtkWxTreeModel *m_gtk_model;
wxDataViewCtrl *m_owner;
GtkSortType m_sort_order;
wxDataViewColumn *m_dataview_sort_column;
int m_sort_column;
GtkTargetEntry m_dragSourceTargetEntry;
wxCharBuffer m_dragSourceTargetEntryTarget;
wxDataObject *m_dragDataObject;
GtkTargetEntry m_dropTargetTargetEntry;
wxCharBuffer m_dropTargetTargetEntryTarget;
wxDataObject *m_dropDataObject;
wxGtkDataViewModelNotifier *m_notifier;
bool m_dirty;
public:
// Allow direct access to this one from wxDataViewCtrl as it's just a
// simple flag and it doesn't make much sense to encapsulate it.
bool m_selectionFuncSet;
};
//-----------------------------------------------------------------------------
// wxGtkTreeModelNode
//-----------------------------------------------------------------------------
static
int LINKAGEMODE wxGtkTreeModelChildCmp( void** id1, void** id2 )
{
int ret = gs_internal->GetDataViewModel()->Compare( wxDataViewItem(*id1), wxDataViewItem(*id2),
gs_internal->GetSortColumn(), (gs_internal->GetSortOrder() == GTK_SORT_ASCENDING) );
return ret;
}
WX_DEFINE_ARRAY_PTR( wxGtkTreeModelNode*, wxGtkTreeModelNodes );
WX_DEFINE_ARRAY_PTR( void*, wxGtkTreeModelChildren );
class wxGtkTreeModelNode
{
public:
wxGtkTreeModelNode( wxGtkTreeModelNode* parent, const wxDataViewItem &item,
wxDataViewCtrlInternal *internal )
{
m_parent = parent;
m_item = item;
m_internal = internal;
}
~wxGtkTreeModelNode()
{
size_t count = m_nodes.GetCount();
size_t i;
for (i = 0; i < count; i++)
{
wxGtkTreeModelNode *child = m_nodes.Item( i );
delete child;
}
}
void AddNode( wxGtkTreeModelNode* child )
{
m_nodes.Add( child );
void *id = child->GetItem().GetID();
m_children.Add( id );
if (m_internal->ShouldBeSorted())
{
gs_internal = m_internal;
m_children.Sort( &wxGtkTreeModelChildCmp );
}
}
void InsertNode( wxGtkTreeModelNode* child, unsigned pos )
{
if (m_internal->ShouldBeSorted())
{
AddNode(child);
return;
}
void *id = child->GetItem().GetID();
// Insert into m_nodes so that the order of nodes in m_nodes is the
// same as the order of their corresponding IDs in m_children:
const unsigned int count = m_nodes.GetCount();
bool inserted = false;
for (unsigned i = 0; i < count; i++)
{
wxGtkTreeModelNode *node = m_nodes[i];
int posInChildren = m_children.Index(node->GetItem().GetID());
if ( (unsigned)posInChildren >= pos )
{
m_nodes.Insert(child, i);
inserted = true;
break;
}
}
if ( !inserted )
m_nodes.Add(child);
m_children.Insert( id, pos );
}
void AddLeaf( void* id )
{
InsertLeaf(id, m_children.size());
}
void InsertLeaf( void* id, unsigned pos )
{
m_children.Insert( id, pos );
if (m_internal->ShouldBeSorted())
{
gs_internal = m_internal;
m_children.Sort( &wxGtkTreeModelChildCmp );
}
}
void DeleteChild( void* id )
{
m_children.Remove( id );
unsigned int count = m_nodes.GetCount();
unsigned int pos;
for (pos = 0; pos < count; pos++)
{
wxGtkTreeModelNode *node = m_nodes.Item( pos );
if (node->GetItem().GetID() == id)
{
m_nodes.RemoveAt( pos );
delete node;
break;
}
}
}
// returns position of child node for given item in children list or wxNOT_FOUND
int FindChildByItem(const wxDataViewItem& item) const
{
const void* itemId = item.GetID();
const wxGtkTreeModelChildren& nodes = m_children;
const int len = nodes.size();
for ( int i = 0; i < len; i++ )
{
if ( nodes[i] == itemId )
return i;
}
return wxNOT_FOUND;
}
wxGtkTreeModelNode* GetParent()
{ return m_parent; }
wxGtkTreeModelNodes &GetNodes()
{ return m_nodes; }
wxGtkTreeModelChildren &GetChildren()
{ return m_children; }
unsigned int GetChildCount() const { return m_children.GetCount(); }
unsigned int GetNodesCount() const { return m_nodes.GetCount(); }
wxDataViewItem &GetItem() { return m_item; }
wxDataViewCtrlInternal *GetInternal() { return m_internal; }
void Resort();
private:
wxGtkTreeModelNode *m_parent;
wxGtkTreeModelNodes m_nodes;
wxGtkTreeModelChildren m_children;
wxDataViewItem m_item;
wxDataViewCtrlInternal *m_internal;
};
//-----------------------------------------------------------------------------
// data
//-----------------------------------------------------------------------------
extern bool g_blockEventsOnDrag;
//-----------------------------------------------------------------------------
// define new GTK+ class wxGtkTreeModel
//-----------------------------------------------------------------------------
extern "C" {
#define GTK_TYPE_WX_TREE_MODEL (gtk_wx_tree_model_get_type ())
#define GTK_WX_TREE_MODEL(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_WX_TREE_MODEL, GtkWxTreeModel))
#define GTK_IS_WX_TREE_MODEL(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_WX_TREE_MODEL))
#define GTK_IS_WX_TREE_MODEL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_WX_TREE_MODEL))
GType gtk_wx_tree_model_get_type (void);
struct _GtkWxTreeModel
{
GObject parent;
/*< private >*/
gint stamp;
wxDataViewCtrlInternal *internal;
};
static GtkWxTreeModel *wxgtk_tree_model_new (void);
static void wxgtk_tree_model_init (GTypeInstance* instance, void*);
static void wxgtk_tree_model_tree_model_init (void* g_iface, void*);
static void wxgtk_tree_model_sortable_init (void* g_iface, void*);
static void wxgtk_tree_model_drag_source_init(void* g_iface, void*);
static void wxgtk_tree_model_drag_dest_init (void* g_iface, void*);
static GtkTreeModelFlags wxgtk_tree_model_get_flags (GtkTreeModel *tree_model);
static gint wxgtk_tree_model_get_n_columns (GtkTreeModel *tree_model);
static GType wxgtk_tree_model_get_column_type (GtkTreeModel *tree_model,
gint index);
static gboolean wxgtk_tree_model_get_iter (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreePath *path);
static GtkTreePath *wxgtk_tree_model_get_path (GtkTreeModel *tree_model,
GtkTreeIter *iter);
static void wxgtk_tree_model_get_value (GtkTreeModel *tree_model,
GtkTreeIter *iter,
gint column,
GValue *value);
static gboolean wxgtk_tree_model_iter_next (GtkTreeModel *tree_model,
GtkTreeIter *iter);
static gboolean wxgtk_tree_model_iter_children (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *parent);
static gboolean wxgtk_tree_model_iter_has_child (GtkTreeModel *tree_model,
GtkTreeIter *iter);
static gint wxgtk_tree_model_iter_n_children (GtkTreeModel *tree_model,
GtkTreeIter *iter);
static gboolean wxgtk_tree_model_iter_nth_child (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *parent,
gint n);
static gboolean wxgtk_tree_model_iter_parent (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *child);
/* sortable */
static gboolean wxgtk_tree_model_get_sort_column_id (GtkTreeSortable *sortable,
gint *sort_column_id,
GtkSortType *order);
static void wxgtk_tree_model_set_sort_column_id (GtkTreeSortable *sortable,
gint sort_column_id,
GtkSortType order);
static void wxgtk_tree_model_set_sort_func (GtkTreeSortable *sortable,
gint sort_column_id,
GtkTreeIterCompareFunc func,
gpointer data,
GDestroyNotify destroy);
static void wxgtk_tree_model_set_default_sort_func (GtkTreeSortable *sortable,
GtkTreeIterCompareFunc func,
gpointer data,
GDestroyNotify destroy);
static gboolean wxgtk_tree_model_has_default_sort_func (GtkTreeSortable *sortable);
/* drag'n'drop */
static gboolean wxgtk_tree_model_row_draggable (GtkTreeDragSource *drag_source,
GtkTreePath *path);
static gboolean wxgtk_tree_model_drag_data_delete (GtkTreeDragSource *drag_source,
GtkTreePath *path);
static gboolean wxgtk_tree_model_drag_data_get (GtkTreeDragSource *drag_source,
GtkTreePath *path,
GtkSelectionData *selection_data);
static gboolean wxgtk_tree_model_drag_data_received (GtkTreeDragDest *drag_dest,
GtkTreePath *dest,
GtkSelectionData *selection_data);
static gboolean wxgtk_tree_model_row_drop_possible (GtkTreeDragDest *drag_dest,
GtkTreePath *dest_path,
GtkSelectionData *selection_data);
GType
gtk_wx_tree_model_get_type (void)
{
static GType tree_model_type = 0;
if (!tree_model_type)
{
const GTypeInfo tree_model_info =
{
sizeof (GObjectClass),
NULL, /* base_init */
NULL, /* base_finalize */
NULL,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkWxTreeModel),
0,
wxgtk_tree_model_init,
NULL
};
static const GInterfaceInfo tree_model_iface_info =
{
wxgtk_tree_model_tree_model_init,
NULL,
NULL
};
static const GInterfaceInfo sortable_iface_info =
{
wxgtk_tree_model_sortable_init,
NULL,
NULL
};
static const GInterfaceInfo drag_source_iface_info =
{
wxgtk_tree_model_drag_source_init,
NULL,
NULL
};
static const GInterfaceInfo drag_dest_iface_info =
{
wxgtk_tree_model_drag_dest_init,
NULL,
NULL
};
tree_model_type = g_type_register_static (G_TYPE_OBJECT, "GtkWxTreeModel",
&tree_model_info, (GTypeFlags)0 );
g_type_add_interface_static (tree_model_type,
GTK_TYPE_TREE_MODEL,
&tree_model_iface_info);
g_type_add_interface_static (tree_model_type,
GTK_TYPE_TREE_SORTABLE,
&sortable_iface_info);
g_type_add_interface_static (tree_model_type,
GTK_TYPE_TREE_DRAG_DEST,
&drag_dest_iface_info);
g_type_add_interface_static (tree_model_type,
GTK_TYPE_TREE_DRAG_SOURCE,
&drag_source_iface_info);
}
return tree_model_type;
}
static GtkWxTreeModel *
wxgtk_tree_model_new(void)
{
GtkWxTreeModel *retval = (GtkWxTreeModel *) g_object_new (GTK_TYPE_WX_TREE_MODEL, NULL);
return retval;
}
static void
wxgtk_tree_model_tree_model_init(void* g_iface, void*)
{
GtkTreeModelIface* iface = static_cast<GtkTreeModelIface*>(g_iface);
iface->get_flags = wxgtk_tree_model_get_flags;
iface->get_n_columns = wxgtk_tree_model_get_n_columns;
iface->get_column_type = wxgtk_tree_model_get_column_type;
iface->get_iter = wxgtk_tree_model_get_iter;
iface->get_path = wxgtk_tree_model_get_path;
iface->get_value = wxgtk_tree_model_get_value;
iface->iter_next = wxgtk_tree_model_iter_next;
iface->iter_children = wxgtk_tree_model_iter_children;
iface->iter_has_child = wxgtk_tree_model_iter_has_child;
iface->iter_n_children = wxgtk_tree_model_iter_n_children;
iface->iter_nth_child = wxgtk_tree_model_iter_nth_child;
iface->iter_parent = wxgtk_tree_model_iter_parent;
}
static void
wxgtk_tree_model_sortable_init(void* g_iface, void*)
{
GtkTreeSortableIface* iface = static_cast<GtkTreeSortableIface*>(g_iface);
iface->get_sort_column_id = wxgtk_tree_model_get_sort_column_id;
iface->set_sort_column_id = wxgtk_tree_model_set_sort_column_id;
iface->set_sort_func = wxgtk_tree_model_set_sort_func;
iface->set_default_sort_func = wxgtk_tree_model_set_default_sort_func;
iface->has_default_sort_func = wxgtk_tree_model_has_default_sort_func;
}
static void
wxgtk_tree_model_drag_source_init(void* g_iface, void*)
{
GtkTreeDragSourceIface* iface = static_cast<GtkTreeDragSourceIface*>(g_iface);
iface->row_draggable = wxgtk_tree_model_row_draggable;
iface->drag_data_delete = wxgtk_tree_model_drag_data_delete;
iface->drag_data_get = wxgtk_tree_model_drag_data_get;
}
static void
wxgtk_tree_model_drag_dest_init(void* g_iface, void*)
{
GtkTreeDragDestIface* iface = static_cast<GtkTreeDragDestIface*>(g_iface);
iface->drag_data_received = wxgtk_tree_model_drag_data_received;
iface->row_drop_possible = wxgtk_tree_model_row_drop_possible;
}
static void
wxgtk_tree_model_init(GTypeInstance* instance, void*)
{
GtkWxTreeModel* tree_model = GTK_WX_TREE_MODEL(instance);
tree_model->internal = NULL;
tree_model->stamp = g_random_int();
}
} // extern "C"
//-----------------------------------------------------------------------------
// implement callbacks from wxGtkTreeModel class by letting
// them call the methods of wxWidgets' wxDataViewModel
//-----------------------------------------------------------------------------
static GtkTreeModelFlags
wxgtk_tree_model_get_flags (GtkTreeModel *tree_model)
{
GtkWxTreeModel *wxtree_model = (GtkWxTreeModel *) tree_model;
g_return_val_if_fail (GTK_IS_WX_TREE_MODEL (wxtree_model), (GtkTreeModelFlags)0 );
return wxtree_model->internal->get_flags();
}
static gint
wxgtk_tree_model_get_n_columns (GtkTreeModel *tree_model)
{
GtkWxTreeModel *wxtree_model = (GtkWxTreeModel *) tree_model;
g_return_val_if_fail (GTK_IS_WX_TREE_MODEL (wxtree_model), 0);
return wxtree_model->internal->GetDataViewModel()->GetColumnCount();
}
static GType
wxgtk_tree_model_get_column_type (GtkTreeModel *tree_model,
gint index)
{
GtkWxTreeModel *wxtree_model = (GtkWxTreeModel *) tree_model;
g_return_val_if_fail (GTK_IS_WX_TREE_MODEL (wxtree_model), G_TYPE_INVALID);
GType gtype = G_TYPE_INVALID;
wxString wxtype = wxtree_model->internal->GetDataViewModel()->GetColumnType( (unsigned int) index );
if (wxtype == wxT("string"))
gtype = G_TYPE_STRING;
else
{
gtype = G_TYPE_POINTER;
// wxFAIL_MSG( wxT("non-string columns not supported for searching yet") );
}
return gtype;
}
static gboolean
wxgtk_tree_model_get_iter (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreePath *path)
{
GtkWxTreeModel *wxtree_model = (GtkWxTreeModel *) tree_model;
g_return_val_if_fail (GTK_IS_WX_TREE_MODEL (wxtree_model), FALSE);
g_return_val_if_fail (gtk_tree_path_get_depth (path) > 0, FALSE);
return wxtree_model->internal->get_iter( iter, path );
}
static GtkTreePath *
wxgtk_tree_model_get_path (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
GtkWxTreeModel *wxtree_model = (GtkWxTreeModel *) tree_model;
g_return_val_if_fail (GTK_IS_WX_TREE_MODEL (wxtree_model), NULL);
g_return_val_if_fail (iter->stamp == GTK_WX_TREE_MODEL (wxtree_model)->stamp, NULL);
return wxtree_model->internal->get_path( iter );
}
static void
wxgtk_tree_model_get_value (GtkTreeModel *tree_model,
GtkTreeIter *iter,
gint column,
GValue *value)
{
GtkWxTreeModel *wxtree_model = (GtkWxTreeModel *) tree_model;
g_return_if_fail (GTK_IS_WX_TREE_MODEL (wxtree_model) );
wxDataViewModel *model = wxtree_model->internal->GetDataViewModel();
wxString mtype = model->GetColumnType( (unsigned int) column );
if (mtype == wxT("string"))
{
wxVariant variant;
g_value_init( value, G_TYPE_STRING );
wxDataViewItem item( (void*) iter->user_data );
model->GetValue( variant, item, (unsigned int) column );
g_value_set_string( value, variant.GetString().utf8_str() );
}
else
{
wxFAIL_MSG( wxT("non-string columns not supported yet") );
}
}
static gboolean
wxgtk_tree_model_iter_next (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
GtkWxTreeModel *wxtree_model = (GtkWxTreeModel *) tree_model;
// This happens when clearing the view by calling .._set_model( NULL );
if (iter->stamp == 0) return FALSE;
g_return_val_if_fail (GTK_IS_WX_TREE_MODEL (wxtree_model), FALSE);
g_return_val_if_fail (wxtree_model->stamp == iter->stamp, FALSE);
return wxtree_model->internal->iter_next( iter );
}
static gboolean
wxgtk_tree_model_iter_children (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *parent)
{
GtkWxTreeModel *wxtree_model = (GtkWxTreeModel *) tree_model;
g_return_val_if_fail (GTK_IS_WX_TREE_MODEL (wxtree_model), FALSE);
if (parent)
{
g_return_val_if_fail (wxtree_model->stamp == parent->stamp, FALSE);
}
return wxtree_model->internal->iter_children( iter, parent );
}
static gboolean
wxgtk_tree_model_iter_has_child (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
GtkWxTreeModel *wxtree_model = (GtkWxTreeModel *) tree_model;
g_return_val_if_fail (GTK_IS_WX_TREE_MODEL (wxtree_model), FALSE);
g_return_val_if_fail (wxtree_model->stamp == iter->stamp, FALSE);
return wxtree_model->internal->iter_has_child( iter );
}
static gint
wxgtk_tree_model_iter_n_children (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
GtkWxTreeModel *wxtree_model = (GtkWxTreeModel *) tree_model;
g_return_val_if_fail (GTK_IS_WX_TREE_MODEL (wxtree_model), 0);
g_return_val_if_fail ( !iter || wxtree_model->stamp == iter->stamp, 0);
return wxtree_model->internal->iter_n_children( iter );
}
static gboolean
wxgtk_tree_model_iter_nth_child (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *parent,
gint n)
{
GtkWxTreeModel *wxtree_model = (GtkWxTreeModel *) tree_model;
g_return_val_if_fail (GTK_IS_WX_TREE_MODEL (wxtree_model), FALSE);
return wxtree_model->internal->iter_nth_child( iter, parent, n );
}
static gboolean
wxgtk_tree_model_iter_parent (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *child)
{
GtkWxTreeModel *wxtree_model = (GtkWxTreeModel *) tree_model;
g_return_val_if_fail (GTK_IS_WX_TREE_MODEL (wxtree_model), FALSE);
g_return_val_if_fail (wxtree_model->stamp == child->stamp, FALSE);
return wxtree_model->internal->iter_parent( iter, child );
}
/* drag'n'drop iface */
static gboolean
wxgtk_tree_model_row_draggable (GtkTreeDragSource *drag_source,
GtkTreePath *path)
{
GtkWxTreeModel *wxtree_model = (GtkWxTreeModel *) drag_source;
g_return_val_if_fail (GTK_IS_WX_TREE_MODEL (wxtree_model), FALSE);
return wxtree_model->internal->row_draggable( drag_source, path );
}
static gboolean
wxgtk_tree_model_drag_data_delete (GtkTreeDragSource *drag_source,
GtkTreePath *path)
{
GtkWxTreeModel *wxtree_model = (GtkWxTreeModel *) drag_source;
g_return_val_if_fail (GTK_IS_WX_TREE_MODEL (wxtree_model), FALSE);
return wxtree_model->internal->drag_data_delete( drag_source, path );
}
static gboolean
wxgtk_tree_model_drag_data_get (GtkTreeDragSource *drag_source,
GtkTreePath *path,
GtkSelectionData *selection_data)
{
GtkWxTreeModel *wxtree_model = (GtkWxTreeModel *) drag_source;
g_return_val_if_fail (GTK_IS_WX_TREE_MODEL (wxtree_model), FALSE);
#if 0
wxPrintf( "drag_get_data\n");
wxGtkString atom_selection(gdk_atom_name(selection_data->selection));
wxPrintf( "selection %s\n", wxString::FromAscii(atom_selection) );
wxGtkString atom_target(gdk_atom_name(selection_data->target));
wxPrintf( "target %s\n", wxString::FromAscii(atom_target) );
wxGtkString atom_type(gdk_atom_name(selection_data->type));
wxPrintf( "type %s\n", wxString::FromAscii(atom_type) );
wxPrintf( "format %d\n", selection_data->format );
#endif
return wxtree_model->internal->drag_data_get( drag_source, path, selection_data );
}
static gboolean
wxgtk_tree_model_drag_data_received (GtkTreeDragDest *drag_dest,
GtkTreePath *dest,
GtkSelectionData *selection_data)
{
GtkWxTreeModel *wxtree_model = (GtkWxTreeModel *) drag_dest;
g_return_val_if_fail (GTK_IS_WX_TREE_MODEL (wxtree_model), FALSE);
return wxtree_model->internal->drag_data_received( drag_dest, dest, selection_data );
}
static gboolean
wxgtk_tree_model_row_drop_possible (GtkTreeDragDest *drag_dest,
GtkTreePath *dest_path,
GtkSelectionData *selection_data)
{
GtkWxTreeModel *wxtree_model = (GtkWxTreeModel *) drag_dest;
g_return_val_if_fail (GTK_IS_WX_TREE_MODEL (wxtree_model), FALSE);
return wxtree_model->internal->row_drop_possible( drag_dest, dest_path, selection_data );
}
/* sortable iface */
static gboolean
wxgtk_tree_model_get_sort_column_id (GtkTreeSortable *sortable,
gint *sort_column_id,
GtkSortType *order)
{
GtkWxTreeModel *wxtree_model = (GtkWxTreeModel *) sortable;
g_return_val_if_fail (GTK_IS_WX_TREE_MODEL (sortable), FALSE);
if (!wxtree_model->internal->IsSorted())
{
if (sort_column_id)
*sort_column_id = -1;
return TRUE;
}
if (sort_column_id)
*sort_column_id = wxtree_model->internal->GetSortColumn();