1 //
2 // System.Web.UI.PageStatePersister
3 //
4 // Author:
5 //	Dick Porter  <dick@ximian.com>
6 //
7 // Copyright (C) 2005-2010 Novell, Inc (http://www.novell.com)
8 //
9 // Permission is hereby granted, free of charge, to any person obtaining
10 // a copy of this software and associated documentation files (the
11 // "Software"), to deal in the Software without restriction, including
12 // without limitation the rights to use, copy, modify, merge, publish,
13 // distribute, sublicense, and/or sell copies of the Software, and to
14 // permit persons to whom the Software is furnished to do so, subject to
15 // the following conditions:
16 //
17 // The above copyright notice and this permission notice shall be
18 // included in all copies or substantial portions of the Software.
19 //
20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 //
28 
29 namespace System.Web.UI
30 {
31 	public abstract class PageStatePersister
32 	{
33 		object control_state;
34 		object view_state;
35 		Page page;
36 		IStateFormatter state_formatter;
37 
PageStatePersister(Page page)38 		protected PageStatePersister (Page page)
39 		{
40 			if (page == null)
41 				throw new ArgumentNullException ("page");
42 			this.page = page;
43 		}
44 
45 		public object ControlState  {
46 			get { return control_state; }
47 			set { control_state = value; }
48 		}
49 
50 		public object ViewState  {
51 			get { return view_state; }
52 			set { view_state = value; }
53 		}
54 
55 		protected Page Page {
56 			get { return page; }
57 			set { page = value; }
58 		}
59 
60 		protected IStateFormatter StateFormatter
61 		{
62 			get {
63 				if (state_formatter == null)
64 					state_formatter = page.GetFormatter ();
65 				return state_formatter;
66 			}
67 		}
68 
Load()69 		public abstract void Load ();
70 
Save()71 		public abstract void Save ();
72 	}
73 }
74