From 7a25132c125f6e5e413ad26ea950ae22bee982f5 Mon Sep 17 00:00:00 2001
From: Charles Kerr <charles.kerr@canonical.com>
Date: Mon, 21 Mar 2016 13:40:11 -0500
Subject: if our USB device is disconnected while prompting the user for ADBD,
 cancel the prompt.

---
 src/usb-monitor.h | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 src/usb-monitor.h

(limited to 'src/usb-monitor.h')

diff --git a/src/usb-monitor.h b/src/usb-monitor.h
new file mode 100644
index 0000000..d9be539
--- /dev/null
+++ b/src/usb-monitor.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2016 Canonical Ltd.
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 3, as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranties of
+ * MERCHANTABILITY, SATISFACTORY QUALITY, 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, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ *   Charles Kerr <charles.kerr@canonical.com>
+ */
+
+#pragma once
+
+#include <core/signal.h>
+
+#include <memory>
+#include <string>
+
+/**
+ * Simple interface that emits signals on USB device state changes
+ */
+class UsbMonitor
+{
+public:
+    UsbMonitor();
+    virtual ~UsbMonitor();
+    virtual core::Signal<const std::string&>& on_usb_disconnected() =0;
+};
+
+/**
+ * Simple GUDev wrapper that notifies on android_usb device state changes
+ */
+class GUDevUsbMonitor: public UsbMonitor
+{
+public:
+    GUDevUsbMonitor();
+    virtual ~GUDevUsbMonitor();
+    core::Signal<const std::string&>& on_usb_disconnected() override;
+
+protected:
+    class Impl;
+    std::unique_ptr<Impl> impl;
+};
+
-- 
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