static void
_object_remove(DiagramData *dia,
Layer *layer,
DiaObject *obj,
DiagramTreeModel *dtm)
{
GtkTreePath *path;
GtkTreeIter _iter;
GtkTreeIter *iter = &_iter;
gboolean last_child = layer_object_count (layer) == 0;
g_return_if_fail (DIA_DIAGRAM(dia) != NULL);
NODE_DIAGRAM(iter) = dia;
NODE_LAYER(iter) = layer;
NODE_OBJECT(iter) = obj;
path = _dtm_get_path (GTK_TREE_MODEL (dtm), iter);
gtk_tree_model_row_deleted (GTK_TREE_MODEL (dtm), path);
gtk_tree_path_free (path);
/* enforce update - but the arrow on layer does not vanish */
if (last_child) {
NODE_OBJECT(iter) = NULL;
path = _dtm_get_path (GTK_TREE_MODEL (dtm), iter);
gtk_tree_model_row_has_child_toggled (GTK_TREE_MODEL (dtm), path, iter);
gtk_tree_path_free (path);
}
}
static void
_diagram_change (DiaApplication *app,
Diagram *dia,
guint flags,
gpointer object,
DiagramTreeModel *dtm)
{
GtkTreePath *path;
GtkTreeIter _iter = {0,};
GtkTreeIter *iter = &_iter;
NODE_DIAGRAM(iter) = DIA_DIAGRAM_DATA(dia);
if (flags & DIAGRAM_CHANGE_NAME)
/* nothing special */;
if (flags & DIAGRAM_CHANGE_LAYER)
NODE_LAYER(iter) = object;
if (flags & DIAGRAM_CHANGE_OBJECT) {
NODE_OBJECT(iter) = object;
NODE_LAYER(iter) = dia_object_get_parent_layer (object);
}
path = _dtm_get_path (GTK_TREE_MODEL (dtm), iter);
gtk_tree_model_row_changed (GTK_TREE_MODEL (dtm), path, iter);
gtk_tree_path_free (path);
}
/* listen on the diagram for object add/remove */
static void
_object_add (DiagramData *dia,
Layer *layer,
DiaObject *obj,
DiagramTreeModel *dtm)
{
GtkTreePath *path;
GtkTreeIter _iter;
GtkTreeIter *iter = &_iter;
/* a bit backward: the first child is in the diagram, but not the tree yet */
gboolean had_child = layer_object_count (layer) > 1;
g_return_if_fail (DIA_DIAGRAM(dia) != NULL);
NODE_DIAGRAM(iter) = dia;
NODE_LAYER(iter) = layer;
NODE_OBJECT(iter) = obj;
/* FIXME: this may get called before the layer is added to the tree */
path = _dtm_get_path (GTK_TREE_MODEL (dtm), iter);
if (path) {
gtk_tree_model_row_inserted (GTK_TREE_MODEL (dtm), path, iter);
/* enforce update */
if (!had_child && gtk_tree_path_up (path))
gtk_tree_model_row_has_child_toggled (GTK_TREE_MODEL (dtm), path, &_iter);
gtk_tree_path_free (path);
}
}
/*
* MODELCHANGES
*
* No matter if we are wrapped in the SortModel change signals are always
* sent to this model. In the sortable case the GtkTreeModelSort translates
* them to the right coordinates for the tree view.
*/
static gboolean
_recurse_row_inserted (GtkTreeModel *model, GtkTreeIter *parent)
{
GtkTreeIter iter;
int n = 0;
while (_dtm_iter_nth_child (model, &iter, parent, n)) {
GtkTreePath *path = _dtm_get_path (model, &iter);
gtk_tree_model_row_inserted (model, path, &iter);
/* gtk_tree_model_row_has_child_toggled
* ... emitted when a row has gotten the first child row ...
* So no need to do it here. Or maybe not for the sorted model?
*/
if (_recurse_row_inserted (model, &iter))
gtk_tree_model_row_has_child_toggled (model, path, &iter);
gtk_tree_path_free (path);
++n;
}
return (n > 0);
}
static void
_object_remove(DiagramData *dia,
Layer *layer,
DiaObject *obj,
DiagramTreeModel *dtm)
{
GtkTreePath *path;
GtkTreeIter _iter;
GtkTreeIter *iter = &_iter;
g_return_if_fail (DIA_DIAGRAM(dia) != NULL);
NODE_DIAGRAM(iter) = dia;
NODE_LAYER(iter) = layer;
NODE_OBJECT(iter) = obj;
path = _dtm_get_path (GTK_TREE_MODEL (dtm), iter);
gtk_tree_model_row_deleted (GTK_TREE_MODEL (dtm), path);
gtk_tree_path_free (path);
}
static void
_diagram_remove (DiaApplication *app,
Diagram *dia,
DiagramTreeModel *dtm)
{
GtkTreePath *path;
GtkTreeIter _iter = {0,};
GtkTreeIter *iter = &_iter;
NODE_DIAGRAM(iter) = DIA_DIAGRAM_DATA(dia);
NODE_LAYER(iter) = NULL;
NODE_OBJECT(iter) = NULL;
path = _dtm_get_path (GTK_TREE_MODEL (dtm), iter);
gtk_tree_model_row_deleted (GTK_TREE_MODEL (dtm), path);
gtk_tree_path_free (path);
/* stop listening on this diagram */
g_signal_handlers_disconnect_by_func (dia, _object_add, dtm);
g_signal_handlers_disconnect_by_func (dia, _object_remove, dtm);
}
/* listen to diagram creation */
static void
_diagram_add (DiaApplication *app,
Diagram *dia,
DiagramTreeModel *dtm)
{
GtkTreePath *path;
GtkTreeIter _iter = {0,}; /* all null is our root */
GtkTreeIter *iter = &_iter;
NODE_DIAGRAM(iter) = DIA_DIAGRAM_DATA (dia);
path = _dtm_get_path (GTK_TREE_MODEL (dtm), iter);
/* we always get a path, but it may not be a valid one */
if (path) {
/* gtk_tree_model_row_changed is not 'strong' enough, lets try to re-add the root */
gtk_tree_model_row_inserted (GTK_TREE_MODEL (dtm), path, iter);
/* looks like the GtkTreeView is somewhat out of service */
if (_recurse_row_inserted (GTK_TREE_MODEL (dtm), iter))
gtk_tree_model_row_has_child_toggled (GTK_TREE_MODEL (dtm), path, iter);
gtk_tree_path_free (path);
}
_dtm_listen_on_diagram (dtm, dia);
}
/* listen on the diagram for object add/remove */
static void
_object_add (DiagramData *dia,
Layer *layer,
DiaObject *obj,
DiagramTreeModel *dtm)
{
GtkTreePath *path;
GtkTreeIter _iter;
GtkTreeIter *iter = &_iter;
g_return_if_fail (DIA_DIAGRAM(dia) != NULL);
NODE_DIAGRAM(iter) = dia;
NODE_LAYER(iter) = layer;
NODE_OBJECT(iter) = obj;
/* FIXME: this may get called before the layer is added to the tree */
path = _dtm_get_path (GTK_TREE_MODEL (dtm), iter);
if (path) {
gtk_tree_model_row_inserted (GTK_TREE_MODEL (dtm), path, iter);
gtk_tree_path_free (path);
}
}