Allow Behavior#init to recive a custom parameter during behavior inst…

…antiation
roperzh · Sep 12, 2014 · f447517 · f447517
1 parent 2eb004f
commit f447517
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Showing 2 changed files with 18 additions and 4 deletions.
diff --git a/src/behavior.js b/src/behavior.js
@@ -31,7 +31,7 @@
 // ```
 
 Essential.Behavior = Proto.extend({
-  constructor: function(domElement, lateStart) {
+  constructor: function(domElement, lateStart, initParams) {
     this.el = domElement;
 
     // A behavior can be initialized without attaching events with the `lateStart`
@@ -48,16 +48,16 @@ Essential.Behavior = Proto.extend({
     // ```
 
     if(!lateStart) {
-      this.start();
+      this.start(initParams);
     }
   },
 
-  start: function() {
+  start: function(initParams) {
     this.delegateEvents();
     this.listenChannels();
 
     if(typeof this.init === "function") {
-      this.init();
+      this.init(initParams);
     }
   },
 

diff --git a/test/behavior_test.js b/test/behavior_test.js
@@ -77,4 +77,18 @@ describe("Essential.Behavior", function() {
     var behavior = Essential.Behavior.extend({});
     expect(behavior.priority).to.be.eq(0);
   });
+
+  it("mut allow a custom parameter on initialization", function() {
+    var firstFlag = true;
+    var secondFlag = false;
+    var BehaviorWithParam = Essential.Behavior.extend({
+      init: function(firstFlagAsParam) {
+        secondFlag = firstFlagAsParam;
+      }
+    });
+
+    BehaviorWithParam.new(document, false, firstFlag);
+
+    expect(secondFlag).to.be.equal(firstFlag);
+  });
 });