dbus: add signal support for removable media

Detect media insertation and removal from lightmediascanner
and update the playlist accordingly. This makes some assumptions
that only one media device will available at a time.

Bug-AGL: SPEC-484
Change-Id: I8300abce3ac09c9cd0327c9d90892e3c5171d8d2
Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>

1 files changed, 55 insertions, 0 deletions

diff --git a/app/dbus.cpp b/app/dbus.cpp
new file mode 100644
index 0000000..c6d0897
--- /dev/null
+++ b/app/dbus.cpp
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2017 Konsulko Group
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "dbus.h"
+
+
+DbusService::DbusService(QObject *parent) : QObject(parent)
+{
+}
+
+/*
+ * Light Media Scanner
+ */
+
+bool DbusService::enableLMS()
+{
+    QDBusConnection session_bus = QDBusConnection::sessionBus();
+
+    if (!session_bus.isConnected())
+        return false;
+
+    return session_bus.connect(QString("org.lightmediascanner"), QString("/org/lightmediascanner/Scanner1"), "org.freedesktop.DBus.Properties", "PropertiesChanged", this, SLOT(lmsUpdate(QString,QVariantMap,QStringList)));
+}
+
+void DbusService::lmsUpdate(const QString&, const QVariantMap& map, const QStringList&)
+{
+    QVariantList mediaFiles;
+    QString music;
+
+    if (!map.contains("IsScanning") && !map.contains("WriteLocked"))
+        return;
+
+    if (map["IsScanning"].toBool() || map["WriteLocked"].toBool())
+        return;
+
+    mediaFiles = LightMediaScanner::processLightMediaScanner();
+
+    if (!mediaFiles.isEmpty())
+        emit processPlaylistUpdate(mediaFiles);
+    else
+        emit processPlaylistHide();
+}