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);
}
static gboolean
_dtm_iter_nth_child (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *parent,
gint n)
{
if (parent) {
*iter = *parent;
if (NODE_OBJECT(parent)) {
return FALSE;
} else if (NODE_LAYER(parent)) {
NODE_OBJECT(iter) = layer_object_get_nth(NODE_LAYER(iter), n);
return NODE_OBJECT(iter) != NULL;
} else if (NODE_DIAGRAM(parent)) {
NODE_LAYER(iter) = data_layer_get_nth(NODE_DIAGRAM(iter), n);
return NODE_LAYER(iter) != NULL;
}
}
if (!parent || !NODE_DIAGRAM(parent)) {
/* the nth diagram */
GList *list = dia_open_diagrams();
list = g_list_nth(list, n);
NODE_DIAGRAM(iter) = list ? list->data : NULL;
NODE_LAYER(iter) = NULL;
NODE_OBJECT(iter) = NULL;
return NODE_DIAGRAM(iter) != NULL;
}
return FALSE;
}
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);
}
}
/* 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);
}
}
static gboolean
_dtm_iter_next (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
int i;
if (NODE_OBJECT(iter)) {
if (!NODE_LAYER(iter))
return FALSE;
i = layer_object_get_index (NODE_LAYER(iter), NODE_OBJECT(iter));
++i;
NODE_OBJECT(iter) = layer_object_get_nth(NODE_LAYER(iter), i);
return NODE_OBJECT(iter) != NULL;
} else if (NODE_LAYER(iter)) {
if (!NODE_DIAGRAM(iter))
return FALSE;
i = data_layer_get_index (NODE_DIAGRAM(iter), NODE_LAYER(iter));
++i;
NODE_LAYER(iter) = data_layer_get_nth(NODE_DIAGRAM(iter), i);
return NODE_LAYER(iter) != NULL;
} else if (NODE_DIAGRAM(iter)) {
GList *list = dia_open_diagrams();
i = g_list_index (list, NODE_DIAGRAM(iter));
++i;
list = g_list_nth (list, i);
NODE_DIAGRAM(iter) = list ? list->data : NULL;
return NODE_DIAGRAM(iter) != NULL;
} else {
/* empy iter? */
GList *list = dia_open_diagrams();
NODE_DIAGRAM(iter) = list ? list->data : NULL;
return NODE_DIAGRAM(iter) != NULL;
}
return FALSE;
}
static gint
cmp_layer (GtkTreeIter *a,
GtkTreeIter *b)
{
Layer *pa = NODE_LAYER(a), *pb = NODE_LAYER(b);
gchar *na, *nb;
gint ret;
if (pa == pb)
return 0;
na = layer_get_name (pa);
nb = layer_get_name (pb);
if (!na || !nb)
return (na > nb) ? -1 : 1;
ret = strcmp (na, nb);
g_free (na);
g_free (nb);
return ret;
}
static gboolean
_dtm_iter_parent (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *child)
{
*iter = *child;
if (!NODE_DIAGRAM(child))
return FALSE;
if (NODE_OBJECT(child))
NODE_OBJECT(iter) = NULL;
else if (NODE_LAYER(child))
NODE_LAYER(iter) = NULL;
else if (NODE_DIAGRAM(child))
NODE_DIAGRAM(iter) = NULL;
else
return FALSE;
return TRUE;
}
static gint
_dtm_iter_n_children (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
if (!iter)
return g_list_length (dia_open_diagrams());
if (NODE_OBJECT(iter)) {
/* TODO: dive into objects (groups?)? */
return 0;
} else if (NODE_LAYER(iter)) {
if (!NODE_LAYER(iter))
return 0;
return layer_object_count (NODE_LAYER(iter));
} else if (NODE_DIAGRAM(iter)) {
if (!NODE_DIAGRAM(iter))
return 0;
return data_layer_count (NODE_DIAGRAM(iter));
}
return 0;
}
static void
_dtm_get_value (GtkTreeModel *tree_model,
GtkTreeIter *iter,
gint column,
GValue *value)
{
switch (column) {
case DIAGRAM_COLUMN :
g_value_init (value, G_TYPE_OBJECT);
g_value_set_object (value, NODE_DIAGRAM(iter));
break;
case LAYER_COLUMN :
g_value_init (value, G_TYPE_POINTER);
g_value_set_pointer (value, NODE_LAYER(iter));
break;
case OBJECT_COLUMN :
g_value_init (value, G_TYPE_POINTER);
g_value_set_pointer (value, NODE_OBJECT(iter));
break;
case NAME_COLUMN :
g_value_init (value, G_TYPE_STRING);
/* deduce the requested name from the iter */
if (NODE_OBJECT(iter))
g_value_set_string (value, object_get_displayname (NODE_OBJECT (iter)));
else if (NODE_LAYER(iter))
g_value_set_string (value, layer_get_name (NODE_LAYER (iter)));
else if (NODE_DIAGRAM(iter))
g_value_set_string (value, diagram_get_name (DIA_DIAGRAM(NODE_DIAGRAM(iter))));
else /* warn on it? */
g_value_set_string (value, NULL);
break;
default :
g_assert_not_reached ();
}
}
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);
}
static gboolean
_dtm_iter_children (GtkTreeModel *tree_model,
GtkTreeIter *iter,
GtkTreeIter *parent)
{
if (parent) {
if (NODE_OBJECT(parent))
return FALSE;
else if (NODE_LAYER(parent)) {
NODE_OBJECT(iter) = layer_object_get_nth(NODE_LAYER(parent), 0);
if (NODE_OBJECT(iter)) {
NODE_LAYER(iter) = dia_object_get_parent_layer(NODE_OBJECT(iter));
NODE_DIAGRAM(iter) = layer_get_parent_diagram (NODE_LAYER(iter));
return TRUE;
}
} else if (NODE_DIAGRAM(parent)) {
NODE_LAYER(iter) = data_layer_get_nth(NODE_DIAGRAM(parent), 0);
if (NODE_LAYER(iter)) {
NODE_DIAGRAM(iter) = layer_get_parent_diagram (NODE_LAYER(iter));
NODE_OBJECT(iter) = NULL;
return TRUE;
}
} else {
/* deliver root's children */
parent = NULL;
}
}
if (!parent) {
/* the first diagram */
GList *list = dia_open_diagrams();
NODE_DIAGRAM(iter) = list ? list->data : NULL;
NODE_LAYER(iter) = NULL;
NODE_OBJECT(iter) = NULL;
return NODE_DIAGRAM(iter) != NULL;
}
return FALSE;
}
/* 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);
}
}
static GtkTreePath *
_dtm_get_path (GtkTreeModel *tree_model,
GtkTreeIter *iter)
{
GtkTreePath *result;
int index = 0;
if (!NODE_DIAGRAM(iter) && !NODE_LAYER(iter) && !NODE_OBJECT(iter)) {
/* the root path */
return gtk_tree_path_new_first ();
}
result = gtk_tree_path_new ();
if (NODE_DIAGRAM(iter)) {
GList *list = dia_open_diagrams();
gtk_tree_path_append_index (result, g_list_index (list, NODE_DIAGRAM(iter)));
}
if (NODE_LAYER(iter)) {
g_return_val_if_fail (NODE_DIAGRAM(iter) == layer_get_parent_diagram (NODE_LAYER(iter)), NULL);
index = data_layer_get_index (NODE_DIAGRAM(iter), NODE_LAYER(iter));
if (index >= 0)
gtk_tree_path_append_index (result, index);
}
if (index >= 0 && NODE_OBJECT(iter)) {
g_return_val_if_fail (NODE_LAYER(iter) == dia_object_get_parent_layer (NODE_OBJECT(iter)), NULL);
index = layer_object_get_index (NODE_LAYER(iter), NODE_OBJECT(iter));
if (index >= 0)
gtk_tree_path_append_index (result, index);
}
if (index < 0) {
gtk_tree_path_free (result);
return NULL;
}
return result;
}
