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-rw-r--r--src/ClientIdle.cxx99
1 files changed, 99 insertions, 0 deletions
diff --git a/src/ClientIdle.cxx b/src/ClientIdle.cxx
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+/*
+ * Copyright (C) 2003-2013 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 "ClientIdle.hxx"
+#include "ClientInternal.hxx"
+
+extern "C" {
+#include "idle.h"
+}
+
+#include <assert.h>
+
+/**
+ * Send "idle" response to this client.
+ */
+static void
+client_idle_notify(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);
+}
+
+void
+client_idle_add(Client *client, unsigned flags)
+{
+ 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);
+ }
+}
+
+static void
+client_idle_callback(gpointer data, gpointer user_data)
+{
+ Client *client = (Client *)data;
+ unsigned flags = GPOINTER_TO_UINT(user_data);
+
+ client_idle_add(client, flags);
+}
+
+void client_manager_idle_add(unsigned flags)
+{
+ assert(flags != 0);
+
+ client_list_foreach(client_idle_callback, GUINT_TO_POINTER(flags));
+}
+
+bool client_idle_wait(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;
+}