crude support for events

Contra
Showing 2 changed files with 96 additions and 25 deletions
lib/rivets.js
src/rivets.coffee
--- a/lib/rivets.js
View file @b1a1aea
+++ b/lib/rivets.js
View file @b1a1aea
 // 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 (this.bindType === "bidirectional") {
-        if (window.addEventListener) {
+        return bindEvent(this.el, 'change', this.publish);
-          return this.el.addEventListener('change', this.publish);
-        } else {
-          return this.el.attachEvent('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) {
--- a/src/rivets.coffee
View file @b1a1aea
+++ b/src/rivets.coffee
View file @b1a1aea
@@ -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 = []) ->
+  constructor: (@el, @type, @bindType, @model, @keypath, @formatters = []) ->
-    @routine = Rivets.routines[@type] || attributeBinding @type
+    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
+    if @bindType is "bidirectional"
-      # Check to see if addEventListener is available.
+      bindEvent @el, 'change', @publish
-      if window.addEventListener
-        @el.addEventListener 'change', @publish
-      else
-      # Assume we are in IE and use attachEvent.
-        @el.attachEvent '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) ->