## Description: Detect if the battery comes from bluetooth keyboard or mouse.
## Origin/Author: Shih-Yuan Lee (FourDollars) <sylee@ubuntu.com>
## Bug: https://bugs.launchpad.net/bugs/1153488
Index: upower-0.9.15/src/linux/up-device-supply.c
===================================================================
--- upower-0.9.15.orig/src/linux/up-device-supply.c	2013-07-31 14:41:16.409825348 +0800
+++ upower-0.9.15/src/linux/up-device-supply.c	2013-07-31 16:42:31.013898187 +0800
@@ -848,9 +848,16 @@
 	UpDeviceSupply *supply = UP_DEVICE_SUPPLY (device);
 	gboolean ret = FALSE;
 	GUdevDevice *native;
+	const gchar *file;
 	const gchar *native_path;
+	const gchar *input_path;
 	const gchar *scope;
 	gchar *device_type = NULL;
+	gchar *device_path = NULL;
+	gchar *dir_name = NULL;
+	gchar *subdir_name = NULL;
+	GDir *dir = NULL;
+	GError *error = NULL;
 	UpDeviceKind type = UP_DEVICE_KIND_UNKNOWN;
 
 	up_device_supply_reset_values (supply);
@@ -880,7 +887,35 @@
 		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);
+				dir = g_dir_open (dir_name, 0, &error);
+				while (file = g_dir_read_name (dir)) {
+					if (g_str_has_prefix (file, "input")) {
+						subdir_name = g_build_filename (dir_name, file, NULL);
+						break;
+					}
+				}
+				g_dir_close (dir);
+			}
+			if (subdir_name) {
+				dir = g_dir_open (subdir_name, 0, &error);
+				while (file = g_dir_read_name (dir)) {
+					if (g_str_has_prefix (file, "mouse")) {
+						type = UP_DEVICE_KIND_MOUSE;
+						break;
+					}
+				}
+				g_dir_close (dir);
+				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 */
@@ -912,6 +947,9 @@
 	ret = up_device_supply_refresh (device);
 out:
 	g_free (device_type);
+	g_free (device_path);
+	g_free (dir_name);
+	g_free (subdir_name);
 	return ret;
 }