gadgets.util.getContainer() helper method (issue1760044)

[jo...@gmail.com]

Reviewers: dev-remailer_shindig.apache.org,

Description:
In several instances, I've seen gadgets getting their container ID for
one reason or another. Given this seems inevitable anyway, it seems
prudent to offer a standard helper method for such functionality.
Comments welcome.

Please review this at http://codereview.appspot.com/1760044/show

Affected files:
   features/src/main/javascript/features/core.util/util.js


Index: features/src/main/javascript/features/core.util/util.js
===================================================================
--- features/src/main/javascript/features/core.util/util.js	(revision  
962724)
+++ features/src/main/javascript/features/core.util/util.js	(working copy)
@@ -53,6 +53,7 @@
    var features = {};
    var services = {};
    var onLoadHandlers = [];
+  var container = null;

    /**
     * @enum {boolean}
@@ -326,10 +327,18 @@
      'unescapeString' : function(str) {
        if (!str) return str;
        return str.replace(/&#([0-9]+);/g, unescapeEntity);
+    },
+
+    'getContainer': function() {
+      return container;
+    },
+
+    '_init': function() {
+      // Initialize url parameters so that hash data is pulled in before  
it can be
+      // altered by a click.
+      var params = gadgets.util.getUrlParameters();
+      container = params.container || params.synd;
      }
    };
  }();
-// Initialize url parameters so that hash data is pulled in before it can  
be
-// altered by a click.
-gadgets['util'].getUrlParameters();
-
+gadgets['util']._init();