Add framework support for keyboard LEDs (Caps/FN)

Change-Id: I7a6989b53f15e86ced59e5fd31464a2334bbfd68

3 files changed, 52 insertions, 0 deletions

diff --git a/core/java/android/os/IPowerManager.aidl b/core/java/android/os/IPowerManager.aidl
index 90ef1cb..e841128 100644
--- a/core/java/android/os/IPowerManager.aidl
+++ b/core/java/android/os/IPowerManager.aidl
@@ -46,4 +46,6 @@ interface IPowerManager
     int getLightSensorScreenBrightness();
     int getLightSensorButtonBrightness();
     int getLightSensorKeyboardBrightness();
+
+    void setKeyboardLight(boolean on, int key);
 }
diff --git a/core/java/android/os/PowerManager.java b/core/java/android/os/PowerManager.java
index f4ca8bc..18a9fe7 100644
--- a/core/java/android/os/PowerManager.java
+++ b/core/java/android/os/PowerManager.java
@@ -421,6 +421,22 @@ public class PowerManager
         }
     }
 
+    /**
+     * sets the keyboard LED state
+     *
+     * @param on boolean state
+     * @param key 1 for caps, 2 for fn
+     *
+     * {@hide}
+     */
+    public void setKeyboardLight(boolean on, int key)
+    {
+        try {
+            mService.setKeyboardLight(on, key);
+        } catch (RemoteException e) {
+        }
+    }
+
    /**
      * Returns the set of flags for {@link #newWakeLock(int, String) newWakeLock()}
      * that are supported on the device.
diff --git a/core/java/android/text/method/MetaKeyKeyListener.java b/core/java/android/text/method/MetaKeyKeyListener.java
index 61ec67f..df33074 100644
--- a/core/java/android/text/method/MetaKeyKeyListener.java
+++ b/core/java/android/text/method/MetaKeyKeyListener.java
@@ -20,6 +20,12 @@ import android.view.KeyEvent;
 import android.view.View;
 import android.text.*;
 
+/* For the hardware keyboard lights */
+import android.os.IPowerManager;
+import android.os.RemoteException;
+import android.os.ServiceManager;
+
+
 /**
  * This base class encapsulates the behavior for handling the meta keys
  * (shift and alt) and the pseudo-meta state of selecting text.
@@ -155,6 +161,14 @@ public abstract class MetaKeyKeyListener {
         adjust(content, CAP);
         adjust(content, ALT);
         adjust(content, SYM);
+        try {
+            IPowerManager power = IPowerManager.Stub.asInterface(
+                ServiceManager.getService("power"));
+            if (getMetaState(content, META_SHIFT_ON) <= 0)
+                power.setKeyboardLight(false, 1);
+            if (getMetaState(content, META_ALT_ON) <= 0)
+                power.setKeyboardLight(false, 2);
+        } catch (RemoteException doe) {}
     }
 
     /**
@@ -208,12 +222,32 @@ public abstract class MetaKeyKeyListener {
                              int keyCode, KeyEvent event) {
         if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) {
             press(content, CAP);
+            try {
+                IPowerManager power = IPowerManager.Stub.asInterface(
+                    ServiceManager.getService("power"));
+                int state = content.getSpanFlags(CAP);
+                if (state == PRESSED || state == LOCKED) {
+                    power.setKeyboardLight(true, 1);
+                } else {
+                    power.setKeyboardLight(false, 1);
+                }
+            } catch (RemoteException doe) {}
             return true;
         }
 
         if (keyCode == KeyEvent.KEYCODE_ALT_LEFT || keyCode == KeyEvent.KEYCODE_ALT_RIGHT
                 || keyCode == KeyEvent.KEYCODE_NUM) {
             press(content, ALT);
+            try {
+                IPowerManager power = IPowerManager.Stub.asInterface(
+                    ServiceManager.getService("power"));
+                int state = content.getSpanFlags(ALT);
+                if (state == PRESSED || state == LOCKED) {
+                    power.setKeyboardLight(true, 2);
+                } else {
+                    power.setKeyboardLight(false, 2);
+                }
+            } catch (RemoteException doe) {}
             return true;
         }