Add Dialog type id support for CSS styling

* src/ui/dialog/Dialog.js (setTypeId): Add method.
* src/ui/dialog/DialogDecorator.js (setTypeId): Add method.
* src/ui/dialog/JqueryDialog.js (setTypeId): Add method.

src/ui/dialog/Dialog.js

@@ -27,6 +27,18 @@ var Interface = require( 'easejs' ).Interface;
  */
 module.exports = Interface( 'Dialog',
 {
+    /**
+     * Uniquely identify dialog type
+     *
+     * The `type_id` is exposed as a CSS class for styling.
+     *
+     * @param {string} type_id unique type identifier
+     *
+     * @return {Dialog} self
+     */
+    'public setTypeId': [ 'type_id' ],
+
+
     /**
      * Sets the dialog title
      *

src/ui/dialog/DialogDecorator.js

@@ -84,6 +84,18 @@ module.exports = AbstractClass
     },
 
 
+    /**
+     * Uniquely identify dialog type
+     *
+     * The `type_id` is exposed as a CSS class for styling.
+     *
+     * @param {string} type_id unique type identifier
+     *
+     * @return {DialogDecorator} self
+     */
+    'public proxy setTypeId': '_dialog',
+
+
     /**
      * Sets the dialog title
      *

src/ui/dialog/JqueryDialog.js

@@ -60,19 +60,38 @@ module.exports = Class( 'JqueryDialog' )
      *
      * @return {undefined}
      */
-    __construct: function( jquery )
+    __construct: function( jquery, id )
     {
         this._jquery = jquery;
 
         this._$dialog = this._jquery( '<div>' )
             .dialog( {
                 // don't show until we're ready
-                autoOpen: false
+                autoOpen: false,
+
+                // default style
+                dialogClass: "liza.dialog",
             }
         );
     },
 
 
+    /**
+     * Uniquely identify dialog type
+     *
+     * The `type_id` is exposed as a CSS class for styling.
+     *
+     * @param {string} type_id unique type identifier
+     *
+     * @return {JqueryDialog} self
+     */
+    'public setTypeId': function( type_id )
+    {
+        this._$dialog.dialog( { dialogClass: type_id } );
+        return this;
+    },
+
+
     /**
      * Sets the dialog title
      *