Added methods to remove handlers from event-queue

Author: Christoph Oberhofer

README.md

@@ -1,7 +1,7 @@
 quaggaJS
 ========
 
-- [Changelog](#changelog) (2015-07-29)
+- [Changelog](#changelog) (2015-08-13)
 
 ## What is QuaggaJS?
 
@@ -141,6 +141,16 @@ In contrast to the calls described above, this method does not rely on
 `getUserMedia` and operates on a single image instead. The provided callback
 is the same as in `onDetected` and contains the result `data` object.
 
+### Quagga.offProcessed(handler)
+
+In case the `onProcessed` event is no longer relevant, `offProcessed` removes
+the given `handler` from the event-queue.
+
+### Quagga.offDetected(handler)
+
+In case the `onDetected` event is no longer relevant, `offDetected` removes
+the given `handler` from the event-queue.
+
 ## <a name="resultobject">The result object</a>
 
 The callbacks passed into `onProcessed`, `onDetected` and `decodeSingle`
@@ -367,6 +377,11 @@ on the ``singleChannel`` flag in the configuration when using ``decodeSingle``.
 
 ## <a name="changelog">Changelog</a>
 
+### 2015-08-13
+- Improvements
+  - Added `offProcessed` and `offDetected` methods for detaching event-
+  listeners from the event-queue.
+
 ### 2015-07-29
 - Features
   - Added basic support for [ITF][i2of5_wiki] barcodes (`i2of5_reader`)

dist/quagga.js

@@ -9204,9 +9204,15 @@ function(InputStream,
         onDetected : function(callback) {
             Events.subscribe("detected", callback);
         },
+        offDetected: function(callback) {
+            Events.unsubscribe("detected", callback);
+        },
         onProcessed: function(callback) {
             Events.subscribe("processed", callback);
         },
+        offProcessed: function(callback) {
+            Events.unsubscribe("processed", callback);
+        },
         setReaders: function(readers) {
             setReaders(readers);
         },

dist/quagga.min.js

@@ -1,6 +1,6 @@
 {
   "name": "quagga",
-  "version": "0.6.14",
+  "version": "0.6.15",
   "description": "An advanced barcode-scanner written in JavaScript",
   "main": "dist/quagga.js",
   "devDependencies": {

package.json

@@ -452,9 +452,15 @@ function(InputStream,
         onDetected : function(callback) {
             Events.subscribe("detected", callback);
         },
+        offDetected: function(callback) {
+            Events.unsubscribe("detected", callback);
+        },
         onProcessed: function(callback) {
             Events.subscribe("processed", callback);
         },
+        offProcessed: function(callback) {
+            Events.unsubscribe("processed", callback);
+        },
         setReaders: function(readers) {
             setReaders(readers);
         },