1 files changed, 92 insertions, 0 deletions
diff --git a/src/service/log.js b/src/service/log.js
new file mode 100644
index 00000000..e1e3f2e6
--- /dev/null
+++ b/src/service/log.js
@@ -0,0 +1,92 @@
+/**
+ * @workInProgress
+ * @ngdoc service
+ * @name angular.service.$log
+ * @requires $window
+ *
+ * @description
+ * Simple service for logging. Default implementation writes the message
+ * into the browser's console (if present).
+ *
+ * The main purpose of this service is to simplify debugging and troubleshooting.
+ *
+ * @example
+    <doc:example>
+      <doc:source>
+         <p>Reload this page with open console, enter text and hit the log button...</p>
+         Message:
+         <input type="text" name="message" value="Hello World!"/>
+         <button ng:click="$log.log(message)">log</button>
+         <button ng:click="$log.warn(message)">warn</button>
+         <button ng:click="$log.info(message)">info</button>
+         <button ng:click="$log.error(message)">error</button>
+      </doc:source>
+      <doc:scenario>
+      </doc:scenario>
+    </doc:example>
+ */
+var $logFactory; //reference to be used only in tests
+angularServiceInject("$log", $logFactory = function($window){
+  return {
+    /**
+     * @workInProgress
+     * @ngdoc method
+     * @name angular.service.$log#log
+     * @methodOf angular.service.$log
+     *
+     * @description
+     * Write a log message
+     */
+    log: consoleLog('log'),
+
+    /**
+     * @workInProgress
+     * @ngdoc method
+     * @name angular.service.$log#warn
+     * @methodOf angular.service.$log
+     *
+     * @description
+     * Write a warning message
+     */
+    warn: consoleLog('warn'),
+
+    /**
+     * @workInProgress
+     * @ngdoc method
+     * @name angular.service.$log#info
+     * @methodOf angular.service.$log
+     *
+     * @description
+     * Write an information message
+     */
+    info: consoleLog('info'),
+
+    /**
+     * @workInProgress
+     * @ngdoc method
+     * @name angular.service.$log#error
+     * @methodOf angular.service.$log
+     *
+     * @description
+     * Write an error message
+     */
+    error: consoleLog('error')
+  };
+
+  function consoleLog(type) {
+    var console = $window.console || {};
+    var logFn = console[type] || console.log || noop;
+    if (logFn.apply) {
+      return function(){
+        var args = [];
+        forEach(arguments, function(arg){
+          args.push(formatError(arg));
+        });
+        return logFn.apply(console, args);
+      };
+    } else {
+      // we are IE, in which case there is nothing we can do
+      return logFn;
+    }
+  }
+}, ['$window'], true);