1 files changed, 89 insertions, 0 deletions
diff --git a/src/client_idle.c b/src/client_idle.c
new file mode 100644
index 000000000..10be4d430
--- /dev/null
+++ b/src/client_idle.c
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2003-2010 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program 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.
+ *
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+#include "client_internal.h"
+#include "idle.h"
+
+#include <assert.h>
+
+/**
+ * Send "idle" response to this client.
+ */
+static void
+client_idle_notify(struct client *client)
+{
+	unsigned flags, i;
+	const char *const* idle_names;
+
+	assert(client->idle_waiting);
+	assert(client->idle_flags != 0);
+
+	flags = client->idle_flags;
+	client->idle_flags = 0;
+	client->idle_waiting = false;
+
+	idle_names = idle_get_names();
+	for (i = 0; idle_names[i]; ++i) {
+		if (flags & (1 << i) & client->idle_subscriptions)
+			client_printf(client, "changed: %s\n",
+				      idle_names[i]);
+	}
+
+	client_puts(client, "OK\n");
+	g_timer_start(client->last_activity);
+}
+
+static void
+client_idle_callback(gpointer data, gpointer user_data)
+{
+	struct client *client = data;
+	unsigned flags = GPOINTER_TO_UINT(user_data);
+
+	if (client_is_expired(client))
+		return;
+
+	client->idle_flags |= flags;
+	if (client->idle_waiting
+	    && (client->idle_flags & client->idle_subscriptions)) {
+		client_idle_notify(client);
+		client_write_output(client);
+	}
+}
+
+void client_manager_idle_add(unsigned flags)
+{
+	assert(flags != 0);
+
+	client_list_foreach(client_idle_callback, GUINT_TO_POINTER(flags));
+}
+
+bool client_idle_wait(struct client *client, unsigned flags)
+{
+	assert(!client->idle_waiting);
+
+	client->idle_waiting = true;
+	client->idle_subscriptions = flags;
+
+	if (client->idle_flags & client->idle_subscriptions) {
+		client_idle_notify(client);
+		return true;
+	} else
+		return false;
+}