From 923289112e34c2d426f6b2e687e93601894fb088 Mon Sep 17 00:00:00 2001
From: Adam Abrons
Date: Tue, 16 Mar 2010 10:30:26 -0700
Subject: spike on directives

---
 src/directives.js | 121 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 121 insertions(+)
 create mode 100644 src/directives.js

diff --git a/src/directives.js b/src/directives.js
new file mode 100644
index 00000000..0e99d633
--- /dev/null
+++ b/src/directives.js
@@ -0,0 +1,121 @@
+
+angular.directive("auth", function(expression, element){
+  return function(){
+    if(expression == "eager") {
+      this.$users.fetchCurrent();
+    }
+  }
+});
+
+
+//expression = "book=Book:{year=2000}"
+angular.directive("entity", function(expression, element){
+  //parse expression, ignore element
+  var entityName; // "Book";
+  var instanceName; // "book";
+  var defaults; // {year: 2000};
+
+  parse(expression);
+
+  return function(){
+    this[entityName] = this.$datastore.entity(entityName, defaults);
+    this[instanceName] = this[entityName]();
+    this.$watch("$anchor."+instanceName, function(newAnchor){
+      this[instanceName] = this[entityName].get(this.$anchor[instanceName]);
+    });
+  };
+});
+
+
+angular.directive("init", function(expression, element){
+  return function(){
+    this.$eval(expresssion);
+  }
+});
+
+
+//translation of {{ }} to ng-bind is external to this
+angular.directive("bind", function(expression, element){
+  return function() {
+    this.$watch(expression, function(value){
+      element.innerText = value;
+    });
+  };
+});
+
+
+// translation of {{ }} to ng-bind-attr is external to this
+// <a href="http://example.com?id={{book.$id}}" alt="{{book.$name}}">link</a>
+// becomes
+// <a href="" ng-bind-attr="{href:'http://example.com?id={{book.$id}}', alt:'{{book.$name}}'}">link</a>
+angular.directive("bind-attr", function(expression, element){
+  var jElement = jQuery(element);
+  return function(){
+    this.$watch(expression, _(jElement.attr).bind(jElement));
+  };
+});
+
+angular.directive("repeat", function(expression, element){
+  var anchor = document.createComment(expression);
+  jQuery(element).replace(anchor);
+  var template = this.compile(element);
+  var lhs = "item";
+  var rhs = "items";
+  var children = [];
+  return function(){
+    this.$watch(rhs, function(items){
+      foreach(children, function(child){
+        child.element.remove();
+      });
+      foreach(items, function(item){
+        var child = template(item); // create scope
+        element.addChild(child.element, anchor);
+        children.push(child);
+      });
+    });
+  };
+});
+
+
+//ng-non-bindable
+angular.directive("non-bindable", function(expression, element){
+  return false;
+});
+
+//Styling
+//
+//ng-class
+//ng-class-odd, ng-class-even
+//ng-style
+//ng-show, ng-hide
+
+
+angular.directive("action", function(expression, element){
+  return function(){
+    var self = this;
+    jQuery(element).click(function(){
+      self.$eval(expression);
+    });
+  };
+});
+
+//ng-eval
+angular.directive("eval", function(expression, element){
+  return function(){
+    this.$onUpdate( expression);
+  }
+});
+//ng-watch
+// <div ng-watch="$anchor.book: book=Book.get();"/>
+angular.directive("watch", function(expression, element){
+  var watches = {
+    'lhs':'rhs'
+  }; // parse
+  return function(){
+    this.$watch(watches);
+  }
+});
+
+//widget related
+//ng-validate, ng-required, ng-formatter
+//ng-error
-- 
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