From 8cc5990e09c3b2cf46caab130e2a01dc4e5a5214 Mon Sep 17 00:00:00 2001
From: mark_story <mark@mark-story.com>
Date: Sat, 28 Mar 2009 12:08:34 -0400
Subject: [PATCH] Adding event() and tests to prototype library

---
 cake/libs/view/helpers/prototype_engine.php        | 14 +++++++++++++-
 .../libs/view/helpers/prototype_engine.test.php    | 10 ++++++++++
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/cake/libs/view/helpers/prototype_engine.php b/cake/libs/view/helpers/prototype_engine.php
index 5d595a4c47f..755a69bd4a8 100644
--- a/cake/libs/view/helpers/prototype_engine.php
+++ b/cake/libs/view/helpers/prototype_engine.php
@@ -2,7 +2,8 @@
 /**
  * Prototype Engine Helper for JsHelper
  *
- * Provides Prototype specific Javascript for JsHelper.
+ * Provides Prototype specific Javascript for JsHelper. Requires at least
+ * Prototype 1.6
  *
  * PHP versions 4 and 5
  *
@@ -67,7 +68,18 @@ function get($selector) {
  * @return string completed event handler
  **/
 	function event($type, $callback, $options = array()) {
+		$defaults = array('wrap' => true, 'stop' => true);
+		$options = array_merge($defaults, $options);
 
+		$function = 'function (event) {%s}';
+		if ($options['wrap'] && $options['stop']) {
+			$callback = "event.stop();\n" . $callback;
+		}
+		if ($options['wrap']) {
+			$callback = sprintf($function, $callback);
+		}
+		$out = $this->selection . ".observe(\"{$type}\", $callback);";
+		return $out;
 	}
 /**
  * Create a domReady event. This is a special event in many libraries
diff --git a/cake/tests/cases/libs/view/helpers/prototype_engine.test.php b/cake/tests/cases/libs/view/helpers/prototype_engine.test.php
index c80a96013dd..82f4c81303f 100644
--- a/cake/tests/cases/libs/view/helpers/prototype_engine.test.php
+++ b/cake/tests/cases/libs/view/helpers/prototype_engine.test.php
@@ -76,7 +76,17 @@ function testSelector() {
  * @return void
  **/
 	function testEvent() {
+		$result = $this->Proto->get('#myLink')->event('click', 'doClick', array('wrap' => false));
+		$expected = '$("myLink").observe("click", doClick);';
+		$this->assertEqual($result, $expected);
 
+		$result = $this->Proto->get('#myLink')->event('click', 'Element.hide(this);', array('stop' => false));
+		$expected = '$("myLink").observe("click", function (event) {Element.hide(this);});';
+		$this->assertEqual($result, $expected);
+
+		$result = $this->Proto->get('#myLink')->event('click', 'Element.hide(this);');
+		$expected = "\$(\"myLink\").observe(\"click\", function (event) {event.stop();\nElement.hide(this);});";
+		$this->assertEqual($result, $expected);
 	}
 /**
  * test dom ready event creation