Merge pull request #9120 from Polyrhythm/ryan/bind-polyfill

add bind polyfill and basic .editorconfig for indentation

.editorconfig

@@ -0,0 +1,6 @@
+root = true
+
+# 4-space indentation
+[*]
+indent_style = space
+indent_size = 4

scripts/developer/tests/bindUnitTest.js

@@ -0,0 +1,31 @@
+Script.include('../libraries/jasmine/jasmine.js');
+Script.include('../libraries/jasmine/hifi-boot.js');
+Script.include('../../system/libraries/utils.js');
+
+describe('Bind', function() {
+    it('functions should have bind available', function() {
+        var foo = 'bar';
+
+        function callAnotherFn(anotherFn) {
+            return anotherFn();
+        }
+
+        function TestConstructor() {
+            this.foo = foo;
+        }
+
+        TestConstructor.prototype.doSomething = function() {
+            return callAnotherFn(function() {
+                return this.foo;
+            }.bind(this));
+        };
+
+        var instance = new TestConstructor();
+        
+        expect(typeof(instance.doSomething.bind) !== 'undefined');
+        expect(instance.doSomething()).toEqual(foo);
+    });
+});
+
+jasmine.getEnv().execute();
+Script.stop();

scripts/system/libraries/utils.js

@@ -6,6 +6,34 @@
 //  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
 //
 
+if (!Function.prototype.bind) {
+    Function.prototype.bind = function(oThis) {
+        if (typeof this !== 'function') {
+            // closest thing possible to the ECMAScript 5
+            // internal IsCallable function
+            throw new TypeError('Function.prototype.bind - what is trying to be bound is not callable');
+        }
+
+        var aArgs   = Array.prototype.slice.call(arguments, 1),
+            fToBind = this,
+            fNOP    = function() {},
+            fBound  = function() {
+                return fToBind.apply(this instanceof fNOP
+                        ? this
+                        : oThis,
+                        aArgs.concat(Array.prototype.slice.call(arguments)));
+            };
+
+        if (this.prototype) {
+            // Function.prototype doesn't have a prototype property
+            fNOP.prototype = this.prototype; 
+        }
+        fBound.prototype = new fNOP();
+
+        return fBound;
+    };
+}
+
 vec3toStr = function(v, digits) {
     if (!digits) { digits = 3; }
     return "{ " + v.x.toFixed(digits) + ", " + v.y.toFixed(digits) + ", " + v.z.toFixed(digits)+ " }";