Connect to the "data-changed" signal in LdDiagram.
Also rewrite some of the functions.
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400568ed7d
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c07d5f552d
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@ -49,6 +49,9 @@ static void ld_diagram_set_property (GObject *object, guint property_id,
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static void ld_diagram_dispose (GObject *gobject);
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static void ld_diagram_finalize (GObject *gobject);
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static void on_object_data_changed (LdDiagramObject *self,
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gchar **path, GValue *old_value, GValue *new_value, gpointer user_data);
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static gboolean write_signature (GOutputStream *stream, GError **error);
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static gboolean check_node (JsonNode *node, JsonNodeType type,
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@ -61,8 +64,9 @@ static JsonNode *serialize_diagram (LdDiagram *self);
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static JsonNode *serialize_object (LdDiagramObject *object);
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static const gchar *get_object_class_string (GType type);
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static void install_object (LdDiagramObject *object, LdDiagram *self);
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static void uninstall_object (LdDiagramObject *object, LdDiagram *self);
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static void ld_diagram_real_changed (LdDiagram *self);
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static void ld_diagram_clear_internal (LdDiagram *self);
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static void ld_diagram_unselect_all_internal (LdDiagram *self);
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@ -166,7 +170,7 @@ ld_diagram_dispose (GObject *gobject)
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LdDiagram *self;
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self = LD_DIAGRAM (gobject);
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ld_diagram_clear_internal (self);
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ld_diagram_clear (self);
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/* Chain up to the parent class. */
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G_OBJECT_CLASS (ld_diagram_parent_class)->dispose (gobject);
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@ -221,33 +225,37 @@ ld_diagram_new (void)
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void
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ld_diagram_clear (LdDiagram *self)
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{
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gboolean changed = FALSE;
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gboolean selection_changed = FALSE;
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g_return_if_fail (LD_IS_DIAGRAM (self));
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ld_diagram_clear_internal (self);
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g_signal_emit (self,
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LD_DIAGRAM_GET_CLASS (self)->changed_signal, 0);
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g_signal_emit (self,
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LD_DIAGRAM_GET_CLASS (self)->selection_changed_signal, 0);
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}
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/*
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* ld_diagram_clear_internal:
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* @self: an #LdDiagram object.
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*
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* Do the same as ld_diagram_clear() does but don't emit signals.
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*/
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static void
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ld_diagram_clear_internal (LdDiagram *self)
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if (self->priv->selection)
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{
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ld_diagram_unselect_all_internal (self);
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selection_changed = TRUE;
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}
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if (self->priv->connections)
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{
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g_list_free (self->priv->connections);
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self->priv->connections = NULL;
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g_list_foreach (self->priv->objects, (GFunc) g_object_unref, NULL);
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changed = TRUE;
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}
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if (self->priv->objects)
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{
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g_list_foreach (self->priv->objects, (GFunc) uninstall_object, self);
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g_list_free (self->priv->objects);
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self->priv->objects = NULL;
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changed = TRUE;
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}
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if (changed)
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g_signal_emit (self,
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LD_DIAGRAM_GET_CLASS (self)->changed_signal, 0);
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if (selection_changed)
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g_signal_emit (self,
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LD_DIAGRAM_GET_CLASS (self)->selection_changed_signal, 0);
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}
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/**
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@ -530,6 +538,27 @@ ld_diagram_set_modified (LdDiagram *self, gboolean value)
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g_object_notify (G_OBJECT (self), "modified");
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}
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static void
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on_object_data_changed (LdDiagramObject *self, gchar **path,
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GValue *old_value, GValue *new_value, gpointer user_data)
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{
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}
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static void
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install_object (LdDiagramObject *object, LdDiagram *self)
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{
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g_signal_connect (object, "data-changed",
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G_CALLBACK (on_object_data_changed), self);
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g_object_ref (object);
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}
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static void
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uninstall_object (LdDiagramObject *object, LdDiagram *self)
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{
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g_signal_handlers_disconnect_by_func (object, on_object_data_changed, self);
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g_object_unref (object);
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}
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/**
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* ld_diagram_get_objects:
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* @self: an #LdDiagram object.
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@ -558,16 +587,15 @@ ld_diagram_insert_object (LdDiagram *self, LdDiagramObject *object, gint pos)
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g_return_if_fail (LD_IS_DIAGRAM (self));
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g_return_if_fail (LD_IS_DIAGRAM_OBJECT (object));
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if (!g_list_find (self->priv->objects, object))
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{
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self->priv->objects =
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g_list_insert (self->priv->objects, object, pos);
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g_object_ref (object);
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if (g_list_find (self->priv->objects, object))
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return;
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self->priv->objects = g_list_insert (self->priv->objects, object, pos);
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install_object (object, self);
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g_signal_emit (self,
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LD_DIAGRAM_GET_CLASS (self)->changed_signal, 0);
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}
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}
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/**
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* ld_diagram_remove_object:
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@ -582,17 +610,17 @@ ld_diagram_remove_object (LdDiagram *self, LdDiagramObject *object)
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g_return_if_fail (LD_IS_DIAGRAM (self));
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g_return_if_fail (LD_IS_DIAGRAM_OBJECT (object));
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if (g_list_find (self->priv->objects, object))
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{
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if (!g_list_find (self->priv->objects, object))
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return;
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ld_diagram_unselect (self, object);
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self->priv->objects = g_list_remove (self->priv->objects, object);
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g_object_unref (object);
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uninstall_object (object, self);
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g_signal_emit (self,
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LD_DIAGRAM_GET_CLASS (self)->changed_signal, 0);
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}
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}
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/**
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* ld_diagram_get_selection:
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@ -617,22 +645,22 @@ ld_diagram_get_selection (LdDiagram *self)
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void
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ld_diagram_remove_selection (LdDiagram *self)
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{
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gboolean changed = FALSE;
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LdDiagramObject *object;
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gboolean changed;
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GList *iter;
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g_return_if_fail (LD_IS_DIAGRAM (self));
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for (iter = self->priv->selection; iter; iter = g_list_next (iter))
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{
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LdDiagramObject *object;
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changed = TRUE;
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object = LD_DIAGRAM_OBJECT (iter->data);
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g_object_unref (object);
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self->priv->objects = g_list_remove (self->priv->objects, object);
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g_object_unref (object);
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g_object_unref (object);
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uninstall_object (object, self);
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}
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changed = self->priv->selection != NULL;
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g_list_free (self->priv->selection);
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self->priv->selection = NULL;
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@ -657,19 +685,17 @@ ld_diagram_select (LdDiagram *self, LdDiagramObject *object)
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{
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g_return_if_fail (LD_IS_DIAGRAM (self));
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g_return_if_fail (LD_IS_DIAGRAM_OBJECT (object));
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g_return_if_fail (g_list_find (self->priv->objects, object) != NULL);
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if (!g_list_find (self->priv->selection, object))
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{
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self->priv->selection =
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g_list_insert (self->priv->selection, object, 0);
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if (g_list_find (self->priv->selection, object))
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return;
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self->priv->selection = g_list_insert (self->priv->selection, object, 0);
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g_object_ref (object);
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g_signal_emit (self,
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LD_DIAGRAM_GET_CLASS (self)->selection_changed_signal, 0);
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}
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}
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/**
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* ld_diagram_unselect:
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@ -684,15 +710,15 @@ ld_diagram_unselect (LdDiagram *self, LdDiagramObject *object)
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g_return_if_fail (LD_IS_DIAGRAM (self));
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g_return_if_fail (LD_IS_DIAGRAM_OBJECT (object));
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if (g_list_find (self->priv->selection, object))
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{
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if (!g_list_find (self->priv->selection, object))
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return;
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self->priv->selection = g_list_remove (self->priv->selection, object);
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g_object_unref (object);
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g_signal_emit (self,
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LD_DIAGRAM_GET_CLASS (self)->selection_changed_signal, 0);
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}
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}
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/**
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* ld_diagram_select_all:
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@ -706,7 +732,6 @@ ld_diagram_select_all (LdDiagram *self)
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g_return_if_fail (LD_IS_DIAGRAM (self));
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ld_diagram_unselect_all_internal (self);
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self->priv->selection = g_list_copy (self->priv->objects);
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g_list_foreach (self->priv->selection, (GFunc) g_object_ref, NULL);
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@ -725,13 +750,14 @@ ld_diagram_unselect_all (LdDiagram *self)
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{
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g_return_if_fail (LD_IS_DIAGRAM (self));
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if (self->priv->selection)
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{
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if (!self->priv->selection)
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return;
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ld_diagram_unselect_all_internal (self);
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g_signal_emit (self,
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LD_DIAGRAM_GET_CLASS (self)->selection_changed_signal, 0);
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}
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}
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static void
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ld_diagram_unselect_all_internal (LdDiagram *self)
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