enable/disable event

src/android/BackgroundMode.java

@@ -101,35 +101,31 @@ public class BackgroundMode extends CordovaPlugin {
             boolean update      = args.getBoolean(1);
 
             configure(settings, update);
-            return true;
         }
 
         if (action.equalsIgnoreCase("disableWebViewOptimizations")) {
             disableWebViewOptimizations();
-            return true;
         }
 
         if (action.equalsIgnoreCase("background")) {
             moveToBackground();
-            return true;
         }
 
         if (action.equalsIgnoreCase("foreground")) {
             moveToForeground();
-            return true;
         }
 
         if (action.equalsIgnoreCase("enable")) {
             enableMode();
-            return true;
         }
 
         if (action.equalsIgnoreCase("disable")) {
             disableMode();
-            return true;
         }
 
-        return false;
+        callback.success();
+
+        return true;
     }
 
     /**

www/background-mode.js

@@ -33,8 +33,14 @@ var exec    = require('cordova/exec'),
  * for the next time.
  */
 exports.enable = function () {
+    if (this.isEnabled())
+        return;
+
+    var me        = this,
+        fireEvent = function () { me.fireEvent('enable'); };
+
     this._isEnabled = true;
-    cordova.exec(null, null, 'BackgroundMode', 'enable', []);
+    cordova.exec(fireEvent, null, 'BackgroundMode', 'enable', []);
 };
 
 /**
@@ -42,8 +48,14 @@ exports.enable = function () {
  * will not stay awake while in background.
  */
 exports.disable = function () {
+    if (!this.isEnabled())
+        return;
+
+    var me        = this,
+        fireEvent = function () { me.fireEvent('disable'); };
+
     this._isEnabled = false;
-    cordova.exec(null, null, 'BackgroundMode', 'disable', []);
+    cordova.exec(fireEvent, null, 'BackgroundMode', 'disable', []);
 };
 
 /**