## Description: add some description
## Origin/Author: add some origin or author
## Bug: bug URL
Index: upower-0.9.15/src/linux/up-device-supply.c
===================================================================
--- upower-0.9.15.orig/src/linux/up-device-supply.c	2013-08-02 15:10:18.000000000 +0800
+++ upower-0.9.15/src/linux/up-device-supply.c	2013-08-02 16:54:44.329440493 +0800
@@ -848,9 +848,15 @@
 	UpDeviceSupply *supply = UP_DEVICE_SUPPLY (device);
 	gboolean ret = FALSE;
 	GUdevDevice *native;
+	const gchar *file;
 	const gchar *native_path;
 	const gchar *scope;
 	gchar *device_type = NULL;
+	gchar *device_path = NULL;
+	gchar *dir_name = NULL;
+	gchar *input_path = NULL;
+	GDir *dir = NULL;
+	GError *error = NULL;
 	UpDeviceKind type = UP_DEVICE_KIND_UNKNOWN;
 
 	up_device_supply_reset_values (supply);
@@ -880,7 +886,51 @@
 		if (g_ascii_strcasecmp (device_type, "mains") == 0) {
 			type = UP_DEVICE_KIND_LINE_POWER;
 		} else if (g_ascii_strcasecmp (device_type, "battery") == 0) {
-			type = UP_DEVICE_KIND_BATTERY;
+
+			/* Detect if the battery comes from bluetooth keyboard or mouse. */
+			if (g_strstr_len (native_path, -1, "bluetooth") != NULL) {
+				device_path = sysfs_resolve_link (native_path, "device");
+				dir_name = g_path_get_dirname (device_path);
+				if (dir = g_dir_open (dir_name, 0, &error)) {
+					while (file = g_dir_read_name (dir)) {
+						/* Check if it is an input device. */
+						if (g_str_has_prefix (file, "input")) {
+							input_path = g_build_filename (dir_name, file, NULL);
+							break;
+						}
+					}
+					g_dir_close (dir);
+				} else {
+					g_warning ("Can not open folder %s: %s", dir_name, error->message);
+					g_error_free (error);
+				}
+				g_free (dir_name);
+				g_free (device_path);
+			}
+
+			if (input_path != NULL) {
+				if (dir = g_dir_open (input_path, 0, &error)) {
+					while (file = g_dir_read_name (dir)) {
+						/* Check if it is a mouse device. */
+						if (g_str_has_prefix (file, "mouse")) {
+							type = UP_DEVICE_KIND_MOUSE;
+							break;
+						}
+					}
+					g_dir_close (dir);
+				} else {
+					g_warning ("Can not open folder %s: %s", input_path, error->message);
+					g_error_free (error);
+				}
+				g_free (input_path);
+				if (type == UP_DEVICE_KIND_UNKNOWN) {
+					type = UP_DEVICE_KIND_KEYBOARD;
+				}
+			}
+
+			if (type == UP_DEVICE_KIND_UNKNOWN) {
+				type = UP_DEVICE_KIND_BATTERY;
+			}
 		} else if (g_ascii_strcasecmp (device_type, "USB") == 0) {
 
 			/* use a heuristic to find the device type */