allow CheckKey to request mounting /system

Also provide a default implementation of CheckKey that's reasonable
for many devices (those that have power and volume keys).

Change-Id: Icf6c7746ebd866152d402059dbd27fd16bd51ff8

1 files changed, 5 insertions, 1 deletions

diff --git a/ui.h b/ui.h
index 6c8987a..d85fc65 100644
--- a/ui.h
+++ b/ui.h
@@ -77,7 +77,7 @@ class RecoveryUI {
     // Return value indicates whether an immediate operation should be
     // triggered (toggling the display, rebooting the device), or if
     // the key should be enqueued for use by the main thread.
-    enum KeyAction { ENQUEUE, TOGGLE, REBOOT, IGNORE };
+    enum KeyAction { ENQUEUE, TOGGLE, REBOOT, IGNORE, MOUNT_SYSTEM };
     virtual KeyAction CheckKey(int key);
 
     // Called immediately before each call to CheckKey(), tell you if
@@ -121,6 +121,10 @@ private:
     int key_down_count;                // under key_queue_mutex
     int rel_sum;
 
+    int consecutive_power_keys;
+    int consecutive_alternate_keys;
+    int last_key;
+
     typedef struct {
         RecoveryUI* ui;
         int key_code;