closes #649 - added resource.error event

@@ -349,6 +349,16 @@ Emitted when a remote `window.callPhantom(data) <https://github.com/ariya/phanto
 
 Emitted when any remote console logging call has been performed.
 
+``resource.error``
+~~~~~~~~~~~~~~~~~~~~~
+
+**Arguments:** ``resourceError``
+
+Emitted when any requested resource fails to load properly. The received ``resourceError`` object has the following properties:
+
+- ``errorCode``: HTTP status code received
+- ``url``: resource url
+
 ``resource.received``
 ~~~~~~~~~~~~~~~~~~~~~
 

@@ -176,17 +176,6 @@ Proxy method for PhantomJS' WebPage#onResourceRequested() callback, but the curr
 
 .. index:: Step stack
 
-``onResourceError``
--------------------------------------------------------------------------------
-
-**Type:** ``Function``
-
-**Default:** ``null``
-
-Proxy method for PhantomJS' WebPage#onResourceError() callback, but the current Casper instance is passed as first argument.
-
-.. index:: Step stack
-
 ``onStepComplete``
 -------------------------------------------------------------------------------
 

@@ -97,7 +97,6 @@ var Casper = function Casper(options) {
         onPageInitialized:   null,
         onResourceReceived:  null,
         onResourceRequested: null,
-        onResourceError:     null,
         onRunComplete:       function _onRunComplete() {
             this.exit();
         },
@@ -2547,9 +2546,6 @@ function createPage(casper) {
     };
     page.onResourceError = function onResourceError(resourceError) {
         casper.emit('resource.error', resourceError);
-        if (utils.isFunction(casper.options.onResourceError)) {
-            casper.options.onResourceError.call(casper, casper, resourceError);
-        }
     };
     page.onUrlChanged = function onUrlChanged(url) {
         casper.log(f('url changed to "%s"', url), "debug");

@@ -50,25 +50,6 @@ casper.test.begin('onResourceRequested() & onResourceReceived() hook tests', 6,
     });
 });
 
-casper.test.begin('onResourceError() hook tests', 3, function(test) {
-    var error = null;
-    casper.options.onResourceError = function(self, resourceError) {
-        error = resourceError;
-    };
-
-    casper.start('tests/site/non-existant.html', function() {
-        var expectedPath = '/tests/site/non-existant.html';
-        test.assert(error !== null, 'onResourceError() called with error information');
-        test.assert(error.errorCode === 203, 'onResourceError() error code is correct');
-        test.assert((error.url.indexOf(expectedPath, error.url.length - expectedPath.length) !== -1), 'onResourceError() url is correct');
-    })
-
-    casper.run(function() {
-        this.options.onResourceError = undefined;
-        test.done();
-    });
-});
-
 casper.test.begin('onAlert() hook tests', 1, function(test) {
     var message;
     casper.options.onAlert = function(self, msg) {

@@ -20,3 +20,16 @@ casper.test.begin("Basic resources tests", 5, function(test) {
     test.done();
   });
 });
+
+casper.test.begin('"resource.error" event', 3, function(test) {
+    casper.on("resource.error", function(error) {
+        test.assertType(error, "object", '"resource.error" triggered error information');
+        test.assert(error.errorCode === 203, '"resource.error" error code is correct');
+        test.assertMatch(error.url, /non-existant\.html$/, '"resource.error" url is correct');
+    });
+
+    casper.start('tests/site/non-existant.html').run(function() {
+        casper.removeAllListeners("resource.error");
+        test.done();
+    });
+});