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Add a "selection-changed" signal to LdDiagram. 

Make existing code emit this signal.
This commit is contained in:
Přemysl Eric Janouch 2011-01-05 04:37:42 +01:00
parent e92bebfa57
commit b08217f999
2 changed files with 30 additions and 4 deletions
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31
src/ld-diagram.c
View File

@ -56,6 +56,7 @@ static void ld_diagram_finalize (GObject *gobject);
static void ld_diagram_real_changed (LdDiagram *self); static void ld_diagram_real_changed (LdDiagram *self);
static void ld_diagram_clear_internal (LdDiagram *self); static void ld_diagram_clear_internal (LdDiagram *self);
static void ld_diagram_unselect_all_internal (LdDiagram *self);
G_DEFINE_TYPE (LdDiagram, ld_diagram, G_TYPE_OBJECT); G_DEFINE_TYPE (LdDiagram, ld_diagram, G_TYPE_OBJECT);
@ -96,6 +97,18 @@ ld_diagram_class_init (LdDiagramClass *klass)
G_STRUCT_OFFSET (LdDiagramClass, changed), NULL, NULL, G_STRUCT_OFFSET (LdDiagramClass, changed), NULL, NULL,
g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
/**
* LdDiagram::selection-changed:
* @diagram: The diagram object.
*
* The current selection has changed.
*/
klass->selection_changed_signal = g_signal_new
("selection-changed", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (LdDiagramClass, selection_changed), NULL, NULL,
g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
g_type_class_add_private (klass, sizeof (LdDiagramPrivate)); g_type_class_add_private (klass, sizeof (LdDiagramPrivate));
} }
@ -426,7 +439,7 @@ ld_diagram_selection_add (LdDiagram *self, LdDiagramObject *object, gint pos)
g_object_ref (object); g_object_ref (object);
g_signal_emit (self, g_signal_emit (self,
LD_DIAGRAM_GET_CLASS (self)->changed_signal, 0); LD_DIAGRAM_GET_CLASS (self)->selection_changed_signal, 0);
} }
} }
@ -449,7 +462,7 @@ ld_diagram_selection_remove (LdDiagram *self, LdDiagramObject *object)
g_object_unref (object); g_object_unref (object);
g_signal_emit (self, g_signal_emit (self,
LD_DIAGRAM_GET_CLASS (self)->changed_signal, 0); LD_DIAGRAM_GET_CLASS (self)->selection_changed_signal, 0);
} }
} }
@ -464,10 +477,13 @@ ld_diagram_select_all (LdDiagram *self)
{ {
g_return_if_fail (LD_IS_DIAGRAM (self)); g_return_if_fail (LD_IS_DIAGRAM (self));
ld_diagram_unselect_all (self); ld_diagram_unselect_all_internal (self);
self->priv->selection = g_slist_copy (self->priv->objects); self->priv->selection = g_slist_copy (self->priv->objects);
g_slist_foreach (self->priv->selection, (GFunc) g_object_ref, NULL); g_slist_foreach (self->priv->selection, (GFunc) g_object_ref, NULL);
g_signal_emit (self,
LD_DIAGRAM_GET_CLASS (self)->selection_changed_signal, 0);
} }
/** /**
@ -481,6 +497,15 @@ ld_diagram_unselect_all (LdDiagram *self)
{ {
g_return_if_fail (LD_IS_DIAGRAM (self)); g_return_if_fail (LD_IS_DIAGRAM (self));
ld_diagram_unselect_all_internal (self);
g_signal_emit (self,
LD_DIAGRAM_GET_CLASS (self)->selection_changed_signal, 0);
}
static void
ld_diagram_unselect_all_internal (LdDiagram *self)
{
g_slist_foreach (self->priv->selection, (GFunc) g_object_unref, NULL); g_slist_foreach (self->priv->selection, (GFunc) g_object_unref, NULL);
g_slist_free (self->priv->selection); g_slist_free (self->priv->selection);
self->priv->selection = NULL; self->priv->selection = NULL;

3
src/ld-diagram.h
View File

@ -48,10 +48,11 @@ struct _LdDiagramClass
/*< private >*/ /*< private >*/
GObjectClass parent_class; GObjectClass parent_class;
/* FIXME: Add a selection_changed signal? */
guint changed_signal; guint changed_signal;
guint selection_changed_signal;
void (*changed) (LdDiagram *self); void (*changed) (LdDiagram *self);
void (*selection_changed) (LdDiagram *self);
}; };