Merge pull request #25 from wearefractal/master

Support for events + build script

 // Generated by CoffeeScript 1.3.3
 (function() {
-  var Rivets, attributeBinding, bidirectionals, getInputValue, rivets,
+  var Rivets, attributeBinding, bidirectionals, bindEvent, eventBinding, getInputValue, rivets, unbindEvent,
     __bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
     __indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; };
 
@@ -14,9 +14,10 @@
 
   Rivets.Binding = (function() {
 
-    function Binding(el, type, model, keypath, formatters) {
+    function Binding(el, type, bindType, model, keypath, formatters) {
       this.el = el;
       this.type = type;
+      this.bindType = bindType;
       this.model = model;
       this.keypath = keypath;
       this.formatters = formatters != null ? formatters : [];
@@ -26,7 +27,11 @@
 
       this.set = __bind(this.set, this);
 
-      this.routine = Rivets.routines[this.type] || attributeBinding(this.type);
+      if (this.bindType === "event") {
+        this.routine = eventBinding(this.type);
+      } else {
+        this.routine = Rivets.routines[this.type] || attributeBinding(this.type);
+      }
     }
 
     Binding.prototype.set = function(value) {
@@ -36,21 +41,21 @@
         formatter = _ref[_i];
         value = Rivets.config.formatters[formatter](value);
       }
-      return this.routine(this.el, value);
+      if (this.bindType === "event") {
+        this.routine(this.el, value, this.currentListener);
+        return this.currentListener = value;
+      } else {
+        return this.routine(this.el, value);
+      }
     };
 
     Binding.prototype.bind = function() {
-      var _ref;
       Rivets.config.adapter.subscribe(this.model, this.keypath, this.set);
       if (Rivets.config.preloadData) {
         this.set(Rivets.config.adapter.read(this.model, this.keypath));
       }
-      if (_ref = this.type, __indexOf.call(bidirectionals, _ref) >= 0) {
-        if (window.addEventListener) {
-          return this.el.addEventListener('change', this.publish);
-        } else {
-          return this.el.attachEvent('change', this.publish);
-        }
+      if (this.bindType === "bidirectional") {
+        return bindEvent(this.el, 'change', this.publish);
       }
     };
 
@@ -92,9 +97,10 @@
     };
 
     View.prototype.build = function() {
-      var attribute, bindingRegExp, keypath, model, node, path, pipe, pipes, type, _i, _len, _ref, _results;
+      var attribute, bindType, bindingRegExp, eventRegExp, keypath, model, node, path, pipe, pipes, type, _i, _len, _ref, _results;
       this.bindings = [];
       bindingRegExp = this.bindingRegExp();
+      eventRegExp = /^event-/;
       _ref = this.el.getElementsByTagName('*');
       _results = [];
       for (_i = 0, _len = _ref.length; _i < _len; _i++) {
@@ -106,6 +112,7 @@
           for (_j = 0, _len1 = _ref1.length; _j < _len1; _j++) {
             attribute = _ref1[_j];
             if (bindingRegExp.test(attribute.name)) {
+              bindType = "attribute";
               type = attribute.name.replace(bindingRegExp, '');
               pipes = (function() {
                 var _k, _len2, _ref2, _results2;
@@ -120,7 +127,13 @@
               path = pipes.shift().split('.');
               model = this.models[path.shift()];
               keypath = path.join('.');
-              _results1.push(this.bindings.push(new Rivets.Binding(node, type, model, keypath, pipes)));
+              if (eventRegExp.test(type)) {
+                type = type.replace(eventRegExp, '');
+                bindType = "event";
+              } else if (__indexOf.call(bidirectionals, type) >= 0) {
+                bindType = "bidirectional";
+              }
+              _results1.push(this.bindings.push(new Rivets.Binding(node, type, bindType, model, keypath, pipes)));
             } else {
               _results1.push(void 0);
             }
@@ -146,6 +159,22 @@
 
   })();
 
+  bindEvent = function(el, event, fn) {
+    if (window.addEventListener) {
+      return el.addEventListener(event, fn);
+    } else {
+      return el.attachEvent(event, fn);
+    }
+  };
+
+  unbindEvent = function(el, event, fn) {
+    if (window.removeEventListener) {
+      return el.removeEventListener(event, fn);
+    } else {
+      return el.detachEvent(event, fn);
+    }
+  };
+
   getInputValue = function(el) {
     switch (el.type) {
       case 'text':
@@ -159,6 +188,17 @@
     }
   };
 
+  eventBinding = function(event) {
+    return function(el, bind, unbind) {
+      if (bind) {
+        bindEvent(el, event, bind);
+      }
+      if (unbind) {
+        return unbindEvent(el, event, unbind);
+      }
+    };
+  };
+
   attributeBinding = function(attr) {
     return function(el, value) {
       if (value) {

@@ -11,5 +11,8 @@
   "repository" : {
     "type" : "git",
     "url" : "https://github.com/mikeric/rivets.git"
+  },
+  "scripts" : {
+    "build" : "coffee -o lib -c src"
   }
 }

@@ -14,8 +14,11 @@ class Rivets.Binding
   # All information about the binding is passed into the constructor; the DOM
   # element, the routine identifier, the model object and the keypath at which
   # to listen for changes.
-  constructor: (@el, @type, @model, @keypath, @formatters = []) ->
-    @routine = Rivets.routines[@type] || attributeBinding @type
+  constructor: (@el, @type, @bindType, @model, @keypath, @formatters = []) ->
+    if @bindType is "event"
+      @routine = eventBinding @type
+    else
+      @routine = Rivets.routines[@type] || attributeBinding @type
 
   # Sets the value for the binding. This Basically just runs the binding routine
   # with the suplied value and applies any formatters.
@@ -23,7 +26,11 @@ class Rivets.Binding
     for formatter in @formatters
       value = Rivets.config.formatters[formatter] value
 
-    @routine @el, value
+    if @bindType is "event"
+      @routine @el, value, @currentListener
+      @currentListener = value
+    else
+      @routine @el, value
 
   # Subscribes to the model for changes at the specified keypath. Bi-directional
   # routines will also listen for changes on the element to propagate them back
@@ -34,13 +41,8 @@ class Rivets.Binding
     if Rivets.config.preloadData
       @set Rivets.config.adapter.read @model, @keypath
 
-    if @type in bidirectionals
-      # Check to see if addEventListener is available.
-      if window.addEventListener
-        @el.addEventListener 'change', @publish
-      else
-      # Assume we are in IE and use attachEvent.
-        @el.attachEvent 'change', @publish
+    if @bindType is "bidirectional"
+      bindEvent @el, 'change', @publish
 
   # Publishes the value currently set on the input element back to the model.
   publish: (e) =>
@@ -64,28 +66,57 @@ class Rivets.View
   build: =>
     @bindings = []
     bindingRegExp = @bindingRegExp()
-
+    eventRegExp = /^event-/
     for node in @el.getElementsByTagName '*'
       for attribute in node.attributes
         if bindingRegExp.test attribute.name
+          bindType = "attribute"
           type = attribute.name.replace bindingRegExp, ''
           pipes = (pipe.trim() for pipe in attribute.value.split '|')
           path = pipes.shift().split '.'
           model = @models[path.shift()]
           keypath = path.join '.'
 
-          @bindings.push new Rivets.Binding node, type, model, keypath, pipes
+          if eventRegExp.test type
+            type = type.replace eventRegExp, ''
+            bindType = "event"
+          else if type in bidirectionals 
+            bindType = "bidirectional"
+
+          @bindings.push new Rivets.Binding node, type, bindType, model, keypath, pipes
 
   # Binds all of the current bindings for this view.
   bind: =>
     binding.bind() for binding in @bindings
 
+# Cross-browser event binding
+bindEvent = (el, event, fn) ->
+  # Check to see if addEventListener is available.
+  if window.addEventListener
+    el.addEventListener event, fn
+  else
+  # Assume we are in IE and use attachEvent.
+    el.attachEvent event, fn
+
+unbindEvent = (el, event, fn) ->
+  # Check to see if addEventListener is available.
+  if window.removeEventListener
+    el.removeEventListener event, fn
+  else
+  # Assume we are in IE and use attachEvent.
+    el.detachEvent event, fn
+
 # Returns the current input value for the specified element.
 getInputValue = (el) ->
   switch el.type
     when 'text', 'textarea', 'password', 'select-one' then el.value
     when 'checkbox', 'radio' then el.checked
 
+# Returns an element binding routine for the specified attribute.
+eventBinding = (event) -> (el, bind, unbind) ->
+    bindEvent el, event, bind if bind
+    unbindEvent el, event, unbind if unbind
+
 # Returns an attribute binding routine for the specified attribute. This is what
 # `registerBinding` falls back to when there is no routine for the binding type.
 attributeBinding = (attr) -> (el, value) ->