Move EActivity and subclasses to e-util.

Planning to write some asynchronous utility functions in e-util that
return EActivity objects.

1 files changed, 198 insertions, 0 deletions

diff --git a/e-util/e-timeout-activity.c b/e-util/e-timeout-activity.c
new file mode 100644
index 0000000000..aa57960fe0
--- /dev/null
+++ b/e-util/e-timeout-activity.c
@@ -0,0 +1,198 @@
+/*
+ * e-timeout-activity.c
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) version 3.
+ *
+ * This program 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with the program; if not, see <http://www.gnu.org/licenses/>
+ *
+ *
+ * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
+ *
+ */
+
+#include "e-timeout-activity.h"
+
+#include <stdarg.h>
+
+#define E_TIMEOUT_ACTIVITY_GET_PRIVATE(obj) \
+	(G_TYPE_INSTANCE_GET_PRIVATE \
+	((obj), E_TYPE_TIMEOUT_ACTIVITY, ETimeoutActivityPrivate))
+
+struct _ETimeoutActivityPrivate {
+	guint timeout_id;
+};
+
+enum {
+	TIMEOUT,
+	LAST_SIGNAL
+};
+
+static gpointer parent_class;
+static gulong signals[LAST_SIGNAL];
+
+static gboolean
+timeout_activity_cb (ETimeoutActivity *timeout_activity)
+{
+	g_signal_emit (timeout_activity, signals[TIMEOUT], 0);
+
+	return FALSE;
+}
+
+static void
+timeout_activity_finalize (GObject *object)
+{
+	ETimeoutActivityPrivate *priv;
+
+	priv = E_TIMEOUT_ACTIVITY_GET_PRIVATE (object);
+
+	if (priv->timeout_id > 0)
+		g_source_remove (priv->timeout_id);
+
+	/* Chain up to parent's finalize() method. */
+	G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+timeout_activity_cancelled (EActivity *activity)
+{
+	ETimeoutActivityPrivate *priv;
+
+	priv = E_TIMEOUT_ACTIVITY_GET_PRIVATE (activity);
+
+	if (priv->timeout_id > 0) {
+		g_source_remove (priv->timeout_id);
+		priv->timeout_id = 0;
+	}
+
+	/* Chain up to parent's cancelled() method. */
+	E_ACTIVITY_CLASS (parent_class)->cancelled (activity);
+}
+
+static void
+timeout_activity_completed (EActivity *activity)
+{
+	ETimeoutActivityPrivate *priv;
+
+	priv = E_TIMEOUT_ACTIVITY_GET_PRIVATE (activity);
+
+	if (priv->timeout_id > 0) {
+		g_source_remove (priv->timeout_id);
+		priv->timeout_id = 0;
+	}
+
+	/* Chain up to parent's completed() method. */
+	E_ACTIVITY_CLASS (parent_class)->completed (activity);
+}
+
+static void
+timeout_activity_timeout (ETimeoutActivity *timeout_activity)
+{
+	/* Allow subclasses to safely chain up. */
+}
+
+static void
+timeout_activity_class_init (ETimeoutActivityClass *class)
+{
+	GObjectClass *object_class;
+	EActivityClass *activity_class;
+
+	parent_class = g_type_class_peek_parent (class);
+	g_type_class_add_private (class, sizeof (ETimeoutActivityPrivate));
+
+	object_class = G_OBJECT_CLASS (class);
+	object_class->finalize = timeout_activity_finalize;
+
+	activity_class = E_ACTIVITY_CLASS (class);
+	activity_class->cancelled = timeout_activity_cancelled;
+	activity_class->completed = timeout_activity_completed;
+
+	class->timeout = timeout_activity_timeout;
+
+	signals[TIMEOUT] = g_signal_new (
+		"timeout",
+		G_OBJECT_CLASS_TYPE (object_class),
+		G_SIGNAL_RUN_FIRST,
+		G_STRUCT_OFFSET (ETimeoutActivityClass, timeout),
+		NULL, NULL,
+		g_cclosure_marshal_VOID__VOID,
+		G_TYPE_NONE, 0);
+}
+
+static void
+timeout_activity_init (ETimeoutActivity *timeout_activity)
+{
+	timeout_activity->priv =
+		E_TIMEOUT_ACTIVITY_GET_PRIVATE (timeout_activity);
+}
+
+GType
+e_timeout_activity_get_type (void)
+{
+	static GType type = 0;
+
+	if (G_UNLIKELY (type == 0)) {
+		static const GTypeInfo type_info = {
+			sizeof (ETimeoutActivityClass),
+			(GBaseInitFunc) NULL,
+			(GBaseFinalizeFunc) NULL,
+			(GClassInitFunc) timeout_activity_class_init,
+			(GClassFinalizeFunc) NULL,
+			NULL,  /* class_data */
+			sizeof (ETimeoutActivity),
+			0,     /* n_preallocs */
+			(GInstanceInitFunc) timeout_activity_init,
+			NULL   /* value_table */
+		};
+
+		type = g_type_register_static (
+			E_TYPE_ACTIVITY, "ETimeoutActivity", &type_info, 0);
+	}
+
+	return type;
+}
+
+EActivity *
+e_timeout_activity_new (const gchar *primary_text)
+{
+	return g_object_new (
+		E_TYPE_TIMEOUT_ACTIVITY,
+		"primary-text", primary_text, NULL);
+}
+
+EActivity *
+e_timeout_activity_newv (const gchar *format, ...)
+{
+	EActivity *activity;
+	gchar *primary_text;
+	va_list args;
+
+	va_start (args, format);
+	primary_text = g_strdup_vprintf (format, args);
+	activity = e_timeout_activity_new (primary_text);
+	g_free (primary_text);
+	va_end (args);
+
+	return activity;
+}
+
+void
+e_timeout_activity_set_timeout (ETimeoutActivity *timeout_activity,
+                                guint seconds)
+{
+	g_return_if_fail (E_IS_TIMEOUT_ACTIVITY (timeout_activity));
+
+	if (timeout_activity->priv->timeout_id > 0)
+		e_activity_cancel (E_ACTIVITY (timeout_activity));
+
+	timeout_activity->priv->timeout_id = g_timeout_add_seconds (
+		seconds, (GSourceFunc) timeout_activity_cb, timeout_activity);
+}