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-rw-r--r--src/nautilus-progress-info-manager.c239
1 files changed, 239 insertions, 0 deletions
diff --git a/src/nautilus-progress-info-manager.c b/src/nautilus-progress-info-manager.c
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+++ b/src/nautilus-progress-info-manager.c
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+/*
+ * Nautilus
+ *
+ * Copyright (C) 2011 Red Hat, Inc.
+ *
+ * Nautilus is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * Nautilus is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; see the file COPYING. If not,
+ * see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Cosimo Cecchi <cosimoc@redhat.com>
+ */
+
+#include <config.h>
+
+#include "nautilus-progress-info-manager.h"
+
+struct _NautilusProgressInfoManager
+{
+ GObject parent_instance;
+
+ GList *progress_infos;
+ GList *current_viewers;
+};
+
+enum
+{
+ NEW_PROGRESS_INFO,
+ HAS_VIEWERS_CHANGED,
+ LAST_SIGNAL
+};
+
+static NautilusProgressInfoManager *singleton = NULL;
+
+static guint signals[LAST_SIGNAL] = { 0, };
+
+G_DEFINE_TYPE (NautilusProgressInfoManager, nautilus_progress_info_manager,
+ G_TYPE_OBJECT);
+
+static void remove_viewer (NautilusProgressInfoManager *self,
+ GObject *viewer);
+
+static void
+nautilus_progress_info_manager_finalize (GObject *obj)
+{
+ GList *l;
+ NautilusProgressInfoManager *self = NAUTILUS_PROGRESS_INFO_MANAGER (obj);
+
+ if (self->progress_infos != NULL)
+ {
+ g_list_free_full (self->progress_infos, g_object_unref);
+ }
+
+ for (l = self->current_viewers; l != NULL; l = l->next)
+ {
+ g_object_weak_unref (l->data, (GWeakNotify) remove_viewer, self);
+ }
+ g_list_free (self->current_viewers);
+
+ G_OBJECT_CLASS (nautilus_progress_info_manager_parent_class)->finalize (obj);
+}
+
+static GObject *
+nautilus_progress_info_manager_constructor (GType type,
+ guint n_props,
+ GObjectConstructParam *props)
+{
+ GObject *retval;
+
+ if (singleton != NULL)
+ {
+ return G_OBJECT (g_object_ref (singleton));
+ }
+
+ retval = G_OBJECT_CLASS (nautilus_progress_info_manager_parent_class)->constructor
+ (type, n_props, props);
+
+ singleton = NAUTILUS_PROGRESS_INFO_MANAGER (retval);
+ g_object_add_weak_pointer (retval, (gpointer) & singleton);
+
+ return retval;
+}
+
+static void
+nautilus_progress_info_manager_init (NautilusProgressInfoManager *self)
+{
+}
+
+static void
+nautilus_progress_info_manager_class_init (NautilusProgressInfoManagerClass *klass)
+{
+ GObjectClass *oclass;
+
+ oclass = G_OBJECT_CLASS (klass);
+ oclass->constructor = nautilus_progress_info_manager_constructor;
+ oclass->finalize = nautilus_progress_info_manager_finalize;
+
+ signals[NEW_PROGRESS_INFO] =
+ g_signal_new ("new-progress-info",
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ 0, NULL, NULL,
+ g_cclosure_marshal_VOID__OBJECT,
+ G_TYPE_NONE,
+ 1,
+ NAUTILUS_TYPE_PROGRESS_INFO);
+
+ signals[HAS_VIEWERS_CHANGED] =
+ g_signal_new ("has-viewers-changed",
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ 0, NULL, NULL,
+ g_cclosure_marshal_VOID__VOID,
+ G_TYPE_NONE,
+ 0);
+}
+
+NautilusProgressInfoManager *
+nautilus_progress_info_manager_dup_singleton (void)
+{
+ return g_object_new (NAUTILUS_TYPE_PROGRESS_INFO_MANAGER, NULL);
+}
+
+void
+nautilus_progress_info_manager_add_new_info (NautilusProgressInfoManager *self,
+ NautilusProgressInfo *info)
+{
+ if (g_list_find (self->progress_infos, info) != NULL)
+ {
+ g_warning ("Adding two times the same progress info object to the manager");
+ return;
+ }
+
+ self->progress_infos =
+ g_list_prepend (self->progress_infos, g_object_ref (info));
+
+ g_signal_emit (self, signals[NEW_PROGRESS_INFO], 0, info);
+}
+
+void
+nautilus_progress_info_manager_remove_finished_or_cancelled_infos (NautilusProgressInfoManager *self)
+{
+ GList *l;
+ GList *next;
+
+ l = self->progress_infos;
+ while (l != NULL)
+ {
+ next = l->next;
+ if (nautilus_progress_info_get_is_finished (l->data) ||
+ nautilus_progress_info_get_is_cancelled (l->data))
+ {
+ self->progress_infos = g_list_remove (self->progress_infos,
+ l->data);
+ }
+ l = next;
+ }
+}
+
+GList *
+nautilus_progress_info_manager_get_all_infos (NautilusProgressInfoManager *self)
+{
+ return self->progress_infos;
+}
+
+gboolean
+nautilus_progress_manager_are_all_infos_finished_or_cancelled (NautilusProgressInfoManager *self)
+{
+ GList *l;
+
+ for (l = self->progress_infos; l != NULL; l = l->next)
+ {
+ if (!(nautilus_progress_info_get_is_finished (l->data) ||
+ nautilus_progress_info_get_is_cancelled (l->data)))
+ {
+ return FALSE;
+ }
+ }
+
+ return TRUE;
+}
+
+static void
+remove_viewer (NautilusProgressInfoManager *self,
+ GObject *viewer)
+{
+ self->current_viewers = g_list_remove (self->current_viewers, viewer);
+
+ if (self->current_viewers == NULL)
+ {
+ g_signal_emit (self, signals[HAS_VIEWERS_CHANGED], 0);
+ }
+}
+
+void
+nautilus_progress_manager_add_viewer (NautilusProgressInfoManager *self,
+ GObject *viewer)
+{
+ GList *viewers;
+
+ viewers = self->current_viewers;
+ if (g_list_find (viewers, viewer) == NULL)
+ {
+ g_object_weak_ref (viewer, (GWeakNotify) remove_viewer, self);
+ viewers = g_list_append (viewers, viewer);
+ self->current_viewers = viewers;
+
+ if (g_list_length (viewers) == 1)
+ {
+ g_signal_emit (self, signals[HAS_VIEWERS_CHANGED], 0);
+ }
+ }
+}
+
+void
+nautilus_progress_manager_remove_viewer (NautilusProgressInfoManager *self,
+ GObject *viewer)
+{
+ if (g_list_find (self->current_viewers, viewer) != NULL)
+ {
+ g_object_weak_unref (viewer, (GWeakNotify) remove_viewer, self);
+ remove_viewer (self, viewer);
+ }
+}
+
+gboolean
+nautilus_progress_manager_has_viewers (NautilusProgressInfoManager *self)
+{
+ return self->current_viewers != NULL;
+}