2 // System.Web.UI.Page.cs
5 // Duncan Mak (duncan@ximian.com)
6 // Gonzalo Paniagua (gonzalo@ximian.com)
7 // Andreas Nahr (ClassDevelopment@A-SoftTech.com)
9 // (C) 2002,2003 Ximian, Inc. (http://www.ximian.com)
10 // Copyright (C) 2003,2005 Novell, Inc (http://www.novell.com)
12 // Permission is hereby granted, free of charge, to any person obtaining
13 // a copy of this software and associated documentation files (the
14 // "Software"), to deal in the Software without restriction, including
15 // without limitation the rights to use, copy, modify, merge, publish,
16 // distribute, sublicense, and/or sell copies of the Software, and to
17 // permit persons to whom the Software is furnished to do so, subject to
18 // the following conditions:
20 // The above copyright notice and this permission notice shall be
21 // included in all copies or substantial portions of the Software.
23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
33 using System.Collections;
34 using System.Collections.Specialized;
35 using System.ComponentModel;
36 using System.ComponentModel.Design;
37 using System.ComponentModel.Design.Serialization;
38 using System.Globalization;
40 using System.Security.Cryptography;
41 using System.Security.Permissions;
42 using System.Security.Principal;
44 using System.Threading;
46 using System.Web.Caching;
47 using System.Web.Configuration;
48 using System.Web.SessionState;
49 using System.Web.Util;
50 using System.Web.UI.HtmlControls;
51 using System.Web.UI.WebControls;
53 using System.Web.UI.Adapters;
54 using System.Collections.Generic;
55 using System.Reflection;
58 namespace System.Web.UI
61 [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
62 [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
64 [RootDesignerSerializer ("Microsoft.VSDesigner.WebForms.RootCodeDomSerializer, " + Consts.AssemblyMicrosoft_VSDesigner, "System.ComponentModel.Design.Serialization.CodeDomSerializer, " + Consts.AssemblySystem_Design, true)]
66 [DefaultEvent ("Load"), DesignerCategory ("ASPXCodeBehind")]
69 [Designer ("Microsoft.VisualStudio.Web.WebForms.WebFormDesigner, " + Consts.AssemblyMicrosoft_VisualStudio_Web, typeof (IRootDesigner))]
71 [Designer ("Microsoft.VSDesigner.WebForms.WebFormDesigner, " + Consts.AssemblyMicrosoft_VSDesigner, typeof (IRootDesigner))]
73 public partial class Page : TemplateControl, IHttpHandler
75 static string machineKeyConfigPath = "system.web/machineKey";
77 private PageLifeCycle _lifeCycle = PageLifeCycle.Unknown;
78 private bool _eventValidation = true;
79 private object [] _savedControlState;
80 private bool _doLoadPreviousPage;
81 string _focusedControlID;
82 bool _hasEnabledControlArray;
84 private bool _viewState = true;
85 private bool _viewStateMac;
86 private string _errorPage;
87 private bool is_validated;
88 private bool _smartNavigation;
89 private int _transactionMode;
90 private HttpContext _context;
91 private ValidatorCollection _validators;
92 private bool renderingForm;
93 private string _savedViewState;
94 private ArrayList _requiresPostBack;
95 private ArrayList _requiresPostBackCopy;
96 private ArrayList requiresPostDataChanged;
97 private IPostBackEventHandler requiresRaiseEvent;
98 private NameValueCollection secondPostData;
99 private bool requiresPostBackScript;
100 private bool postBackScriptRendered;
101 bool handleViewState;
102 string viewStateUserKey;
103 NameValueCollection _requestValueCollection;
105 ClientScriptManager scriptManager;
106 bool allow_load; // true when the Form collection belongs to this page (GetTypeHashCode)
107 PageStatePersister page_state_persister;
109 [EditorBrowsable (EditorBrowsableState.Never)]
115 const string postEventArgumentID = "__EVENTARGUMENT";
117 [EditorBrowsable (EditorBrowsableState.Never)]
123 const string postEventSourceID = "__EVENTTARGET";
126 const string ScrollPositionXID = "__SCROLLPOSITIONX";
127 const string ScrollPositionYID = "__SCROLLPOSITIONY";
128 const string EnabledControlArrayID = "__enabledControlArray";
132 internal const string LastFocusID = "__LASTFOCUS";
133 internal const string CallbackArgumentID = "__CALLBACKARGUMENT";
134 internal const string CallbackSourceID = "__CALLBACKTARGET";
135 internal const string PreviousPageID = "__PREVIOUSPAGE";
139 MasterPage masterPage;
140 string masterPageFile;
143 bool isCrossPagePostBack;
146 ArrayList requireStateControls;
147 Hashtable _validatorsByGroup;
152 string _styleSheetTheme;
155 bool _maintainScrollPositionOnPostBack;
157 private bool asyncMode = false;
158 private TimeSpan asyncTimeout;
159 private const double DefaultAsyncTimeout = 45.0;
160 private List<PageAsyncTask> parallelTasks;
161 private List<PageAsyncTask> serialTasks;
163 private ViewStateEncryptionMode viewStateEncryptionMode;
164 private bool controlRegisteredForViewStateEncryption = false;
170 scriptManager = new ClientScriptManager (this);
174 PagesSection ps = WebConfigurationManager.GetSection ("system.web/pages") as PagesSection;
176 asyncTimeout = ps.AsyncTimeout;
177 viewStateEncryptionMode = ps.ViewStateEncryptionMode;
179 asyncTimeout = TimeSpan.FromSeconds (DefaultAsyncTimeout);
180 viewStateEncryptionMode = ViewStateEncryptionMode.Auto;
189 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
191 public HttpApplicationState Application
194 if (_context == null)
196 return _context.Application;
200 [EditorBrowsable (EditorBrowsableState.Never)]
201 protected bool AspCompatMode
204 get { return false; }
206 set { throw new NotImplementedException (); }
209 [EditorBrowsable (EditorBrowsableState.Never)]
211 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
212 [BrowsableAttribute (false)]
215 get { return Response.BufferOutput; }
216 set { Response.BufferOutput = value; }
219 protected bool Buffer
221 set { Response.BufferOutput = value; }
225 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
230 if (_context == null)
231 throw new HttpException ("No cache available without a context.");
232 return _context.Cache;
237 [EditorBrowsableAttribute (EditorBrowsableState.Advanced)]
239 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
240 [Browsable (false), DefaultValue ("")]
241 [WebSysDescription ("Value do override the automatic browser detection and force the page to use the specified browser.")]
242 public string ClientTarget
244 get { return (clientTarget == null) ? "" : clientTarget; }
246 clientTarget = value;
252 [EditorBrowsable (EditorBrowsableState.Never)]
254 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
255 [BrowsableAttribute (false)]
258 get { return Response.ContentEncoding.CodePage; }
259 set { Response.ContentEncoding = Encoding.GetEncoding (value); }
262 protected int CodePage
264 set { Response.ContentEncoding = Encoding.GetEncoding (value); }
268 [EditorBrowsable (EditorBrowsableState.Never)]
270 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
271 [BrowsableAttribute (false)]
272 public string ContentType
274 get { return Response.ContentType; }
275 set { Response.ContentType = value; }
278 protected string ContentType
280 set { Response.ContentType = value; }
284 protected override HttpContext Context
287 if (_context == null)
288 return HttpContext.Current;
295 [EditorBrowsable (EditorBrowsableState.Advanced)]
296 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
297 [BrowsableAttribute (false)]
298 public string Culture
300 get { return Thread.CurrentThread.CurrentCulture.Name; }
301 set { Thread.CurrentThread.CurrentCulture = GetPageCulture (value, Thread.CurrentThread.CurrentCulture); }
304 [EditorBrowsable (EditorBrowsableState.Never)]
305 protected string Culture
307 set { Thread.CurrentThread.CurrentCulture = new CultureInfo (value); }
312 public virtual bool EnableEventValidation {
313 get { return _eventValidation; }
315 if (_lifeCycle > PageLifeCycle.Init)
316 throw new InvalidOperationException ("The 'EnableEventValidation' property can be set only in the Page_init, the Page directive or in the <pages> configuration section.");
317 _eventValidation = value;
321 internal PageLifeCycle LifeCycle {
322 get { return _lifeCycle; }
327 public override bool EnableViewState
329 get { return _viewState; }
330 set { _viewState = value; }
334 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
335 [BrowsableAttribute (false)]
337 [EditorBrowsable (EditorBrowsableState.Never)]
343 bool EnableViewStateMac
345 get { return _viewStateMac; }
346 set { _viewStateMac = value; }
350 internal bool EnableViewStateMacInternal {
351 get { return _viewStateMac; }
352 set { _viewStateMac = value; }
356 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
357 [Browsable (false), DefaultValue ("")]
358 [WebSysDescription ("The URL of a page used for error redirection.")]
359 public string ErrorPage
361 get { return _errorPage; }
364 if (_context != null)
365 _context.ErrorPage = value;
372 [EditorBrowsable (EditorBrowsableState.Never)]
373 protected ArrayList FileDependencies
376 if (Response != null)
377 Response.AddFileDependencies (value);
383 [EditorBrowsable (EditorBrowsableState.Never)]
385 public override string ID
387 get { return base.ID; }
388 set { base.ID = value; }
391 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
393 public bool IsPostBack
399 return _requestValueCollection != null;
404 [EditorBrowsable (EditorBrowsableState.Never), Browsable (false)]
405 public bool IsReusable {
406 get { return false; }
409 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
411 public bool IsValid {
414 throw new HttpException (Locale.GetText ("Page hasn't been validated."));
417 foreach (IValidator val in Validators)
422 return ValidateCollection (_validators);
427 public IDictionary Items {
430 items = new Hashtable ();
436 [EditorBrowsable (EditorBrowsableState.Never)]
438 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
439 [BrowsableAttribute (false)]
441 get { return Thread.CurrentThread.CurrentCulture.LCID; }
442 set { Thread.CurrentThread.CurrentCulture = new CultureInfo (value); }
446 set { Thread.CurrentThread.CurrentCulture = new CultureInfo (value); }
452 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
453 public bool MaintainScrollPositionOnPostBack {
454 get { return _maintainScrollPositionOnPostBack; }
455 set { _maintainScrollPositionOnPostBack = value; }
460 public PageAdapter PageAdapter {
462 return (PageAdapter)Adapter;
468 internal string theForm {
475 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
477 public HttpRequest Request
480 if (_context != null)
481 return _context.Request;
483 throw new HttpException("Request is not available without context");
487 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
489 public HttpResponse Response
492 if (_context != null)
493 return _context.Response;
495 throw new HttpException ("Response is not available without context");
499 [EditorBrowsable (EditorBrowsableState.Never)]
501 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
502 [BrowsableAttribute (false)]
503 public string ResponseEncoding
505 get { return Response.ContentEncoding.WebName; }
506 set { Response.ContentEncoding = Encoding.GetEncoding (value); }
509 protected string ResponseEncoding
511 set { Response.ContentEncoding = Encoding.GetEncoding (value); }
515 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
517 public HttpServerUtility Server
520 return Context.Server;
524 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
526 public virtual HttpSessionState Session
529 if (_context == null)
530 _context = HttpContext.Current;
532 if (_context == null)
533 throw new HttpException ("Session is not available without context");
535 if (_context.Session == null)
536 throw new HttpException ("Session state can only be used " +
537 "when enableSessionState is set to true, either " +
538 "in a configuration file or in the Page directive.");
540 return _context.Session;
545 [FilterableAttribute (false)]
549 public bool SmartNavigation
551 get { return _smartNavigation; }
552 set { _smartNavigation = value; }
556 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
559 public virtual string StyleSheetTheme {
560 get { return _styleSheetTheme; }
561 set { _styleSheetTheme = value; }
565 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
566 public virtual string Theme {
567 get { return _theme; }
568 set { _theme = value; }
571 void InitializeStyleSheet ()
573 if (_styleSheetTheme == null) {
574 PagesSection ps = WebConfigurationManager.GetSection ("system.web/pages") as PagesSection;
576 _styleSheetTheme = ps.StyleSheetTheme;
578 if (_styleSheetTheme != null && _styleSheetTheme != "")
579 _styleSheetPageTheme = ThemeDirectoryCompiler.GetCompiledInstance (_styleSheetTheme, _context);
582 void InitializeTheme ()
584 if (_theme == null) {
585 PagesSection ps = WebConfigurationManager.GetSection ("system.web/pages") as PagesSection;
589 if (_theme != null && _theme != "") {
590 _pageTheme = ThemeDirectoryCompiler.GetCompiledInstance (_theme, _context);
591 _pageTheme.SetPage (this);
600 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
601 public string Title {
604 return htmlHeader.Title;
608 if (htmlHeader != null)
609 htmlHeader.Title = value;
616 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
618 public TraceContext Trace
620 get { return Context.Trace; }
623 [EditorBrowsable (EditorBrowsableState.Never)]
625 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
626 [BrowsableAttribute (false)]
627 public bool TraceEnabled
629 get { return Trace.IsEnabled; }
630 set { Trace.IsEnabled = value; }
633 protected bool TraceEnabled
635 set { Trace.IsEnabled = value; }
639 [EditorBrowsable (EditorBrowsableState.Never)]
641 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
642 [BrowsableAttribute (false)]
643 public TraceMode TraceModeValue
645 get { return Trace.TraceMode; }
646 set { Trace.TraceMode = value; }
649 protected TraceMode TraceModeValue
651 set { Trace.TraceMode = value; }
655 [EditorBrowsable (EditorBrowsableState.Never)]
656 protected int TransactionMode
659 get { return _transactionMode; }
661 set { _transactionMode = value; }
666 // This method is here just to remove the warning about "_transactionMode" not being
667 // used. We probably will use it internally at some point.
669 internal int GetTransactionMode ()
671 return _transactionMode;
676 [EditorBrowsable (EditorBrowsableState.Advanced)]
677 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
678 [BrowsableAttribute (false)]
679 public string UICulture
681 get { return Thread.CurrentThread.CurrentUICulture.Name; }
682 set { Thread.CurrentThread.CurrentUICulture = GetPageCulture (value, Thread.CurrentThread.CurrentUICulture); }
685 [EditorBrowsable (EditorBrowsableState.Never)]
686 protected string UICulture
688 set { Thread.CurrentThread.CurrentUICulture = new CultureInfo (value); }
692 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
694 public IPrincipal User
696 get { return Context.User; }
699 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
701 public ValidatorCollection Validators
704 if (_validators == null)
705 _validators = new ValidatorCollection ();
710 [MonoTODO ("Use this when encrypting/decrypting ViewState")]
712 public string ViewStateUserKey {
713 get { return viewStateUserKey; }
714 set { viewStateUserKey = value; }
718 public override bool Visible
720 get { return base.Visible; }
721 set { base.Visible = value; }
729 CultureInfo GetPageCulture (string culture, CultureInfo deflt)
733 CultureInfo ret = null;
734 if (culture.StartsWith ("auto", StringComparison.InvariantCultureIgnoreCase)) {
736 if (Context.IsPortletRequest)
739 string[] languages = Request.UserLanguages;
741 if (languages != null && languages.Length > 0)
742 ret = CultureInfo.CreateSpecificCulture (languages[0]);
749 ret = CultureInfo.CreateSpecificCulture (culture);
755 [EditorBrowsable (EditorBrowsableState.Never)]
756 protected IAsyncResult AspCompatBeginProcessRequest (HttpContext context,
760 throw new NotImplementedException ();
763 [EditorBrowsable (EditorBrowsableState.Never)]
764 protected void AspCompatEndProcessRequest (IAsyncResult result)
766 throw new NotImplementedException ();
769 [EditorBrowsable (EditorBrowsableState.Advanced)]
770 protected virtual HtmlTextWriter CreateHtmlTextWriter (TextWriter tw)
772 return new HtmlTextWriter (tw);
775 [EditorBrowsable (EditorBrowsableState.Never)]
776 public void DesignerInitialize ()
778 InitRecursive (null);
781 [EditorBrowsable (EditorBrowsableState.Advanced)]
782 protected virtual NameValueCollection DeterminePostBackMode ()
784 if (_context == null)
787 HttpRequest req = _context.Request;
791 NameValueCollection coll = null;
792 if (0 == String.Compare (Request.HttpMethod, "POST", true, CultureInfo.InvariantCulture))
795 else if (IsPortletRender && req.Form ["__VIEWSTATE"] != null)
799 coll = req.QueryString;
801 WebROCollection c = (WebROCollection) coll;
802 allow_load = !c.GotID;
804 c.ID = GetTypeHashCode ();
806 allow_load = (c.ID == GetTypeHashCode ());
808 if (coll != null && coll ["__VIEWSTATE"] == null && coll ["__EVENTTARGET"] == null)
815 public override Control FindControl (string id) {
819 return base.FindControl (id);
826 [EditorBrowsable (EditorBrowsableState.Advanced)]
827 public string GetPostBackClientEvent (Control control, string argument)
829 return scriptManager.GetPostBackEventReference (control, argument);
835 [EditorBrowsable (EditorBrowsableState.Advanced)]
836 public string GetPostBackClientHyperlink (Control control, string argument)
838 return scriptManager.GetPostBackClientHyperlink (control, argument);
844 [EditorBrowsable (EditorBrowsableState.Advanced)]
845 public string GetPostBackEventReference (Control control)
847 return scriptManager.GetPostBackEventReference (control, "");
853 [EditorBrowsable (EditorBrowsableState.Advanced)]
854 public string GetPostBackEventReference (Control control, string argument)
856 return scriptManager.GetPostBackEventReference (control, argument);
859 internal void RequiresPostBackScript ()
862 if (requiresPostBackScript)
864 ClientScript.RegisterHiddenField (postEventSourceID, String.Empty);
865 ClientScript.RegisterHiddenField (postEventArgumentID, String.Empty);
867 requiresPostBackScript = true;
870 [EditorBrowsable (EditorBrowsableState.Never)]
871 public virtual int GetTypeHashCode ()
877 [MonoTODO("The following properties of OutputCacheParameters are silently ignored: CacheProfile, NoStore, SqlDependency")]
878 protected internal virtual void InitOutputCache(OutputCacheParameters cacheSettings)
880 if (cacheSettings.Enabled)
881 InitOutputCache(cacheSettings.Duration,
882 cacheSettings.VaryByHeader,
883 cacheSettings.VaryByCustom,
884 cacheSettings.Location,
885 cacheSettings.VaryByParam);
889 [EditorBrowsable (EditorBrowsableState.Never)]
890 protected virtual void InitOutputCache (int duration,
893 OutputCacheLocation location,
896 HttpCachePolicy cache = _context.Response.Cache;
897 bool set_vary = false;
900 case OutputCacheLocation.Any:
901 cache.SetCacheability (HttpCacheability.Public);
902 cache.SetMaxAge (new TimeSpan (0, 0, duration));
903 cache.SetLastModified (_context.Timestamp);
906 case OutputCacheLocation.Client:
907 cache.SetCacheability (HttpCacheability.Private);
908 cache.SetMaxAge (new TimeSpan (0, 0, duration));
909 cache.SetLastModified (_context.Timestamp);
911 case OutputCacheLocation.Downstream:
912 cache.SetCacheability (HttpCacheability.Public);
913 cache.SetMaxAge (new TimeSpan (0, 0, duration));
914 cache.SetLastModified (_context.Timestamp);
916 case OutputCacheLocation.Server:
917 cache.SetCacheability (HttpCacheability.Server);
920 case OutputCacheLocation.None:
925 if (varyByCustom != null)
926 cache.SetVaryByCustom (varyByCustom);
928 if (varyByParam != null && varyByParam.Length > 0) {
929 string[] prms = varyByParam.Split (';');
930 foreach (string p in prms)
931 cache.VaryByParams [p.Trim ()] = true;
932 cache.VaryByParams.IgnoreParams = false;
934 cache.VaryByParams.IgnoreParams = true;
937 if (varyByHeader != null && varyByHeader.Length > 0) {
938 string[] hdrs = varyByHeader.Split (';');
939 foreach (string h in hdrs)
940 cache.VaryByHeaders [h.Trim ()] = true;
944 cache.Duration = duration;
945 cache.SetExpires (_context.Timestamp.AddSeconds (duration));
951 [EditorBrowsable (EditorBrowsableState.Advanced)]
953 public bool IsClientScriptBlockRegistered (string key)
955 return scriptManager.IsClientScriptBlockRegistered (key);
961 [EditorBrowsable (EditorBrowsableState.Advanced)]
963 public bool IsStartupScriptRegistered (string key)
965 return scriptManager.IsStartupScriptRegistered (key);
968 public string MapPath (string virtualPath)
970 return Request.MapPath (virtualPath);
974 protected internal override void Render (HtmlTextWriter writer) {
975 if (MaintainScrollPositionOnPostBack) {
976 ClientScript.RegisterWebFormClientScript ();
978 ClientScript.RegisterHiddenField (ScrollPositionXID, Request [ScrollPositionXID]);
979 ClientScript.RegisterHiddenField (ScrollPositionYID, Request [ScrollPositionYID]);
981 StringBuilder script = new StringBuilder ();
982 script.AppendLine ("<script type=\"text/javascript\">");
983 script.AppendLine ("<!--");
984 script.AppendLine (theForm + ".oldSubmit = " + theForm + ".submit;");
985 script.AppendLine (theForm + ".submit = WebForm_SaveScrollPositionSubmit;");
986 script.AppendLine (theForm + ".oldOnSubmit = " + theForm + ".onsubmit;");
987 script.AppendLine (theForm + ".onsubmit = WebForm_SaveScrollPositionOnSubmit;");
989 script.AppendLine (theForm + ".oldOnLoad = window.onload;");
990 script.AppendLine ("window.onload = function () { WebForm_RestoreScrollPosition (" + theForm + "); };");
992 script.AppendLine ("// -->");
993 script.AppendLine ("</script>");
995 ClientScript.RegisterStartupScript (typeof (Page), "MaintainScrollPositionOnPostBackStartup", script.ToString());
997 base.Render (writer);
1001 private void RenderPostBackScript (HtmlTextWriter writer, string formUniqueID)
1004 writer.WriteLine ("<input type=\"hidden\" name=\"{0}\" value=\"\" />", postEventSourceID);
1005 writer.WriteLine ("<input type=\"hidden\" name=\"{0}\" value=\"\" />", postEventArgumentID);
1007 writer.WriteLine ();
1009 ClientScript.WriteBeginScriptBlock (writer);
1012 RenderClientScriptFormDeclaration (writer, formUniqueID);
1014 writer.WriteLine ("function __doPostBack(eventTarget, eventArgument) {");
1015 writer.WriteLine ("\tvar currForm = {0};", theForm);
1017 writer.WriteLine ("\tcurrForm.__doPostBack(eventTarget, eventArgument);");
1018 writer.WriteLine ("}");
1019 writer.WriteLine ("{0}.__doPostBack = function (eventTarget, eventArgument) {{", theForm);
1020 writer.WriteLine ("\tvar currForm = this;");
1021 writer.WriteLine ("\tif(currForm.onsubmit && currForm.onsubmit() == false) return;");
1023 writer.WriteLine ("\tif(document.ValidatorOnSubmit && !ValidatorOnSubmit()) return;");
1025 writer.WriteLine ("\tcurrForm.{0}.value = eventTarget;", postEventSourceID);
1026 writer.WriteLine ("\tcurrForm.{0}.value = eventArgument;", postEventArgumentID);
1027 writer.WriteLine ("\tcurrForm.submit();");
1028 writer.WriteLine ("}");
1030 ClientScript.WriteEndScriptBlock (writer);
1033 void RenderClientScriptFormDeclaration (HtmlTextWriter writer, string formUniqueID)
1035 writer.WriteLine ("\tvar {0};\n\tif (document.getElementById) {{ {0} = document.getElementById ('{1}'); }}", theForm, formUniqueID);
1036 writer.WriteLine ("\telse {{ {0} = document.{1}; }}", theForm, formUniqueID);
1037 writer.WriteLine ("\t{0}.isAspForm = true;", theForm);
1039 string serverUrl = Context.ServletResponse.encodeURL (Request.RawUrl);
1040 writer.WriteLine ("\t{0}.serverURL = {1};", theForm, ClientScriptManager.GetScriptLiteral (serverUrl));
1044 internal void OnFormRender (HtmlTextWriter writer, string formUniqueID)
1047 throw new HttpException ("Only 1 HtmlForm is allowed per page.");
1049 renderingForm = true;
1050 writer.WriteLine ();
1053 ClientScript.WriteBeginScriptBlock (writer);
1054 RenderClientScriptFormDeclaration (writer, formUniqueID);
1055 ClientScript.WriteEndScriptBlock (writer);
1058 if (handleViewState)
1059 scriptManager.RegisterHiddenField ("__VIEWSTATE", _savedViewState);
1061 scriptManager.WriteHiddenFields (writer);
1062 if (requiresPostBackScript) {
1063 RenderPostBackScript (writer, formUniqueID);
1064 postBackScriptRendered = true;
1066 scriptManager.WriteClientScriptIncludes (writer);
1067 scriptManager.WriteClientScriptBlocks (writer);
1070 internal IStateFormatter GetFormatter ()
1072 return new ObjectStateFormatter (this);
1075 internal string GetSavedViewState ()
1077 return _savedViewState;
1080 internal void OnFormPostRender (HtmlTextWriter writer, string formUniqueID)
1082 if (!postBackScriptRendered && requiresPostBackScript)
1083 RenderPostBackScript (writer, formUniqueID);
1085 scriptManager.WriteArrayDeclares (writer);
1088 scriptManager.SaveEventValidationState ();
1089 scriptManager.WriteExpandoAttributes (writer);
1091 scriptManager.WriteHiddenFields (writer);
1092 scriptManager.WriteClientScriptIncludes (writer);
1093 scriptManager.WriteStartupScriptBlocks (writer);
1094 renderingForm = false;
1095 postBackScriptRendered = false;
1098 private void ProcessPostData (NameValueCollection data, bool second)
1101 Hashtable used = new Hashtable ();
1102 foreach (string id in data.AllKeys){
1103 if (id == "__VIEWSTATE" || id == postEventSourceID || id == postEventArgumentID)
1106 string real_id = id;
1107 int dot = real_id.IndexOf ('.');
1109 real_id = real_id.Substring (0, dot);
1111 if (real_id == null || used.ContainsKey (real_id))
1114 used.Add (real_id, real_id);
1116 Control ctrl = FindControl (real_id);
1118 IPostBackDataHandler pbdh = ctrl as IPostBackDataHandler;
1119 IPostBackEventHandler pbeh = ctrl as IPostBackEventHandler;
1123 RegisterRequiresRaiseEvent (pbeh);
1127 if (pbdh.LoadPostData (real_id, data) == true) {
1128 if (requiresPostDataChanged == null)
1129 requiresPostDataChanged = new ArrayList ();
1130 requiresPostDataChanged.Add (pbdh);
1133 if (_requiresPostBackCopy != null)
1134 _requiresPostBackCopy.Remove (real_id);
1136 } else if (!second) {
1137 if (secondPostData == null)
1138 secondPostData = new NameValueCollection ();
1139 secondPostData.Add (real_id, data [id]);
1144 ArrayList list1 = null;
1145 if (_requiresPostBackCopy != null && _requiresPostBackCopy.Count > 0) {
1146 string [] handlers = (string []) _requiresPostBackCopy.ToArray (typeof (string));
1147 foreach (string id in handlers) {
1148 IPostBackDataHandler pbdh = FindControl (id) as IPostBackDataHandler;
1150 _requiresPostBackCopy.Remove (id);
1151 if (pbdh.LoadPostData (id, data)) {
1152 if (requiresPostDataChanged == null)
1153 requiresPostDataChanged = new ArrayList ();
1155 requiresPostDataChanged.Add (pbdh);
1157 } else if (!second) {
1159 list1 = new ArrayList ();
1164 _requiresPostBackCopy = second ? null : list1;
1166 secondPostData = null;
1169 [EditorBrowsable (EditorBrowsableState.Never)]
1171 public virtual void ProcessRequest (HttpContext context)
1173 public void ProcessRequest (HttpContext context)
1177 _lifeCycle = PageLifeCycle.Unknown;
1180 if (clientTarget != null)
1181 Request.ClientTarget = clientTarget;
1183 WireupAutomaticEvents ();
1184 //-- Control execution lifecycle in the docs
1186 // Save culture information because it can be modified in FrameworkInitialize()
1187 CultureInfo culture = Thread.CurrentThread.CurrentCulture;
1188 CultureInfo uiculture = Thread.CurrentThread.CurrentUICulture;
1189 FrameworkInitialize ();
1190 context.ErrorPage = _errorPage;
1193 InternalProcessRequest ();
1194 } catch (ThreadAbortException) {
1195 // Do nothing, just ignore it by now.
1196 } catch (Exception e) {
1197 context.AddError (e); // OnError might access LastError
1198 OnError (EventArgs.Empty);
1199 context.ClearError (e);
1200 // We want to remove that error, as we're rethrowing to stop
1201 // further processing.
1202 Trace.Warn ("Unhandled Exception", e.ToString (), e);
1207 _lifeCycle = PageLifeCycle.Unload;
1210 UnloadRecursive (true);
1212 _lifeCycle = PageLifeCycle.End;
1215 if (Thread.CurrentThread.CurrentCulture.Equals (culture) == false)
1216 Thread.CurrentThread.CurrentCulture = culture;
1218 if (Thread.CurrentThread.CurrentUICulture.Equals (uiculture) == false)
1219 Thread.CurrentThread.CurrentUICulture = uiculture;
1224 delegate void ProcessRequestDelegate (HttpContext context);
1226 private sealed class DummyAsyncResult : IAsyncResult
1228 readonly object state;
1229 readonly WaitHandle asyncWaitHandle;
1230 readonly bool completedSynchronously;
1231 readonly bool isCompleted;
1233 public DummyAsyncResult (bool isCompleted, bool completedSynchronously, object state)
1235 this.isCompleted = isCompleted;
1236 this.completedSynchronously = completedSynchronously;
1239 asyncWaitHandle = new ManualResetEvent (true);
1242 asyncWaitHandle = new ManualResetEvent (false);
1246 #region IAsyncResult Members
1248 public object AsyncState {
1249 get { return state; }
1252 public WaitHandle AsyncWaitHandle {
1253 get { return asyncWaitHandle; }
1256 public bool CompletedSynchronously {
1257 get { return completedSynchronously; }
1260 public bool IsCompleted {
1261 get { return isCompleted; }
1267 protected IAsyncResult AsyncPageBeginProcessRequest (HttpContext context, AsyncCallback callback, object extraData)
1269 ProcessRequest (context);
1270 DummyAsyncResult asyncResult = new DummyAsyncResult (true, true, extraData);
1272 if (callback != null) {
1273 callback (asyncResult);
1279 protected void AsyncPageEndProcessRequest (IAsyncResult result)
1283 internal void ProcessCrossPagePostBack (HttpContext context)
1285 isCrossPagePostBack = true;
1286 ProcessRequest (context);
1290 void InternalProcessRequest ()
1292 _requestValueCollection = this.DeterminePostBackMode();
1295 _lifeCycle = PageLifeCycle.Start;
1296 // http://msdn2.microsoft.com/en-us/library/ms178141.aspx
1297 if (_requestValueCollection != null) {
1298 if (!isCrossPagePostBack && _requestValueCollection [PreviousPageID] != null && _requestValueCollection [PreviousPageID] != Request.FilePath) {
1299 _doLoadPreviousPage = true;
1302 isCallback = _requestValueCollection [CallbackArgumentID] != null;
1303 // LAMESPEC: on Callback IsPostBack is set to false, but true.
1304 //isPostBack = !isCallback;
1307 string lastFocus = _requestValueCollection [LastFocusID];
1308 if (!String.IsNullOrEmpty (lastFocus)) {
1309 _focusedControlID = UniqueID2ClientID (lastFocus);
1313 // if request was transfered from other page - track Prev. Page
1314 previousPage = _context.LastPage;
1315 _context.LastPage = this;
1317 _lifeCycle = PageLifeCycle.PreInit;
1318 OnPreInit (EventArgs.Empty);
1322 _lifeCycle = PageLifeCycle.Init;
1324 Trace.Write ("aspx.page", "Begin Init");
1325 InitRecursive (null);
1326 Trace.Write ("aspx.page", "End Init");
1329 _lifeCycle = PageLifeCycle.InitComplete;
1330 OnInitComplete (EventArgs.Empty);
1333 renderingForm = false;
1335 if (IsPostBack || IsCallback) {
1336 _lifeCycle = PageLifeCycle.PreLoad;
1337 if (_requestValueCollection != null)
1338 scriptManager.RestoreEventValidationState (_requestValueCollection [scriptManager.EventStateFieldName]);
1342 Trace.Write ("aspx.page", "Begin LoadViewState");
1343 LoadPageViewState ();
1344 Trace.Write ("aspx.page", "End LoadViewState");
1345 Trace.Write ("aspx.page", "Begin ProcessPostData");
1346 ProcessPostData (_requestValueCollection, false);
1347 Trace.Write ("aspx.page", "End ProcessPostData");
1351 OnPreLoad (EventArgs.Empty);
1352 _lifeCycle = PageLifeCycle.Load;
1357 if (IsPostBack || IsCallback) {
1358 _lifeCycle = PageLifeCycle.ControlEvents;
1362 Trace.Write ("aspx.page", "Begin ProcessPostData Second Try");
1363 ProcessPostData (secondPostData, true);
1364 Trace.Write ("aspx.page", "End ProcessPostData Second Try");
1365 Trace.Write ("aspx.page", "Begin Raise ChangedEvents");
1366 RaiseChangedEvents ();
1367 Trace.Write ("aspx.page", "End Raise ChangedEvents");
1368 Trace.Write ("aspx.page", "Begin Raise PostBackEvent");
1369 RaisePostBackEvents ();
1370 Trace.Write ("aspx.page", "End Raise PostBackEvent");
1374 _lifeCycle = PageLifeCycle.LoadComplete;
1375 OnLoadComplete (EventArgs.Empty);
1377 if (IsCrossPagePostBack)
1381 string result = ProcessCallbackData ();
1382 HtmlTextWriter callbackOutput = new HtmlTextWriter (_context.Response.Output);
1383 callbackOutput.Write (result);
1384 callbackOutput.Flush ();
1388 _lifeCycle = PageLifeCycle.PreRender;
1391 Trace.Write ("aspx.page", "Begin PreRender");
1392 PreRenderRecursiveInternal ();
1393 Trace.Write ("aspx.page", "End PreRender");
1396 ExecuteRegisteredAsyncTasks ();
1398 _lifeCycle = PageLifeCycle.PreRenderComplete;
1399 OnPreRenderComplete (EventArgs.Empty);
1402 Trace.Write ("aspx.page", "Begin SaveViewState");
1403 SavePageViewState ();
1404 Trace.Write ("aspx.page", "End SaveViewState");
1407 _lifeCycle = PageLifeCycle.SaveStateComplete;
1408 OnSaveStateComplete (EventArgs.Empty);
1410 if (OnSaveStateCompleteForPortlet ())
1412 #endif // TARGET_J2EE
1416 _lifeCycle = PageLifeCycle.Render;
1420 Trace.Write ("aspx.page", "Begin Render");
1421 HtmlTextWriter output = new HtmlTextWriter (_context.Response.Output);
1422 RenderControl (output);
1423 Trace.Write ("aspx.page", "End Render");
1426 private void RenderTrace ()
1428 TraceManager traceManager = HttpRuntime.TraceManager;
1430 if (Trace.HaveTrace && !Trace.IsEnabled || !Trace.HaveTrace && !traceManager.Enabled)
1435 if (!Trace.HaveTrace && traceManager.Enabled && !traceManager.PageOutput)
1438 if (!traceManager.LocalOnly || Context.Request.IsLocal) {
1439 HtmlTextWriter output = new HtmlTextWriter (_context.Response.Output);
1440 Trace.Render (output);
1445 bool CheckForValidationSupport (Control targetControl)
1447 if (targetControl == null)
1449 Type type = targetControl.GetType ();
1450 object[] attributes = type.GetCustomAttributes (false);
1451 foreach (object attr in attributes)
1452 if (attr is SupportsEventValidationAttribute)
1458 void RaisePostBackEvents ()
1461 Control targetControl;
1463 if (requiresRaiseEvent != null) {
1464 RaisePostBackEvent (requiresRaiseEvent, null);
1468 NameValueCollection postdata = _requestValueCollection;
1469 if (postdata == null)
1472 string eventTarget = postdata [postEventSourceID];
1473 if (eventTarget == null || eventTarget.Length == 0) {
1479 targetControl = FindControl (eventTarget);
1480 IPostBackEventHandler target = targetControl as IPostBackEventHandler;
1482 IPostBackEventHandler target = FindControl (eventTarget) as IPostBackEventHandler;
1488 string eventArgument = postdata [postEventArgumentID];
1489 RaisePostBackEvent (target, eventArgument);
1492 internal void RaiseChangedEvents ()
1494 if (requiresPostDataChanged == null)
1497 foreach (IPostBackDataHandler ipdh in requiresPostDataChanged)
1498 ipdh.RaisePostDataChangedEvent ();
1500 requiresPostDataChanged = null;
1503 [EditorBrowsable (EditorBrowsableState.Advanced)]
1504 protected virtual void RaisePostBackEvent (IPostBackEventHandler sourceControl, string eventArgument)
1507 Control targetControl = sourceControl as Control;
1508 if (targetControl != null && CheckForValidationSupport (targetControl))
1509 scriptManager.ValidateEvent (targetControl.UniqueID, eventArgument);
1511 sourceControl.RaisePostBackEvent (eventArgument);
1517 [EditorBrowsable (EditorBrowsableState.Advanced)]
1518 public void RegisterArrayDeclaration (string arrayName, string arrayValue)
1520 scriptManager.RegisterArrayDeclaration (arrayName, arrayValue);
1526 [EditorBrowsable (EditorBrowsableState.Advanced)]
1527 public virtual void RegisterClientScriptBlock (string key, string script)
1529 scriptManager.RegisterClientScriptBlock (key, script);
1535 [EditorBrowsable (EditorBrowsableState.Advanced)]
1536 public virtual void RegisterHiddenField (string hiddenFieldName, string hiddenFieldInitialValue)
1538 scriptManager.RegisterHiddenField (hiddenFieldName, hiddenFieldInitialValue);
1541 [MonoTODO("Not implemented, Used in HtmlForm")]
1542 internal void RegisterClientScriptFile (string a, string b, string c)
1544 throw new NotImplementedException ();
1550 [EditorBrowsable (EditorBrowsableState.Advanced)]
1551 public void RegisterOnSubmitStatement (string key, string script)
1553 scriptManager.RegisterOnSubmitStatement (key, script);
1556 internal string GetSubmitStatements ()
1558 return scriptManager.WriteSubmitStatements ();
1561 [EditorBrowsable (EditorBrowsableState.Advanced)]
1562 public void RegisterRequiresPostBack (Control control)
1565 if (!(control is IPostBackDataHandler))
1566 throw new HttpException ("The control to register does not implement the IPostBackDataHandler interface.");
1569 if (_requiresPostBack == null)
1570 _requiresPostBack = new ArrayList ();
1572 if (_requiresPostBack.Contains (control.UniqueID))
1575 _requiresPostBack.Add (control.UniqueID);
1578 [EditorBrowsable (EditorBrowsableState.Advanced)]
1579 public virtual void RegisterRequiresRaiseEvent (IPostBackEventHandler control)
1581 requiresRaiseEvent = control;
1587 [EditorBrowsable (EditorBrowsableState.Advanced)]
1588 public virtual void RegisterStartupScript (string key, string script)
1590 scriptManager.RegisterStartupScript (key, script);
1593 [EditorBrowsable (EditorBrowsableState.Advanced)]
1594 public void RegisterViewStateHandler ()
1596 handleViewState = true;
1599 [EditorBrowsable (EditorBrowsableState.Advanced)]
1600 protected virtual void SavePageStateToPersistenceMedium (object viewState)
1602 PageStatePersister persister = this.PageStatePersister;
1603 if (persister == null)
1605 Pair pair = viewState as Pair;
1607 persister.ViewState = pair.First;
1608 persister.ControlState = pair.Second;
1610 persister.ViewState = viewState;
1614 internal string RawViewState {
1616 NameValueCollection postdata = _requestValueCollection;
1618 if (postdata == null || (view_state = postdata ["__VIEWSTATE"]) == null)
1621 if (view_state == "")
1625 set { _savedViewState = value; }
1633 PageStatePersister PageStatePersister {
1635 if (page_state_persister == null)
1636 page_state_persister = new HiddenFieldPageStatePersister (this);
1637 return page_state_persister;
1641 [EditorBrowsable (EditorBrowsableState.Advanced)]
1642 protected virtual object LoadPageStateFromPersistenceMedium ()
1644 PageStatePersister persister = this.PageStatePersister;
1645 if (persister == null)
1648 return new Pair (persister.ViewState, persister.ControlState);
1651 internal void LoadPageViewState()
1653 Pair sState = LoadPageStateFromPersistenceMedium () as Pair;
1654 if (sState != null) {
1657 LoadPageControlState (sState.Second);
1659 Pair vsr = sState.First as Pair;
1661 LoadViewStateRecursive (vsr.First);
1662 _requiresPostBackCopy = vsr.Second as ArrayList;
1668 internal void SavePageViewState ()
1670 if (!handleViewState)
1674 object controlState = SavePageControlState ();
1677 object viewState = SaveViewStateRecursive ();
1678 object reqPostback = (_requiresPostBack != null && _requiresPostBack.Count > 0) ? _requiresPostBack : null;
1681 if (viewState != null || reqPostback != null)
1682 vsr = new Pair (viewState, reqPostback);
1683 Pair pair = new Pair ();
1687 pair.Second = controlState;
1691 if (pair.First == null && pair.Second == null)
1692 SavePageStateToPersistenceMedium (null);
1694 SavePageStateToPersistenceMedium (pair);
1698 public virtual void Validate ()
1700 is_validated = true;
1701 ValidateCollection (_validators);
1705 internal bool AreValidatorsUplevel () {
1706 return AreValidatorsUplevel (String.Empty);
1709 internal bool AreValidatorsUplevel (string valGroup)
1711 internal virtual bool AreValidatorsUplevel ()
1714 bool uplevel = false;
1716 foreach (IValidator v in Validators) {
1717 BaseValidator bv = v as BaseValidator;
1718 if (bv == null) continue;
1721 if (valGroup != bv.ValidationGroup)
1724 if (bv.GetRenderUplevel()) {
1733 bool ValidateCollection (ValidatorCollection validators)
1736 if (!_eventValidation)
1740 if (validators == null || validators.Count == 0)
1743 bool all_valid = true;
1744 foreach (IValidator v in validators){
1746 if (v.IsValid == false)
1753 [EditorBrowsable (EditorBrowsableState.Advanced)]
1754 public virtual void VerifyRenderingInServerForm (Control control)
1756 if (_context == null)
1763 throw new HttpException ("Control '" +
1766 control.GetType ().Name +
1767 "' must be placed inside a form tag with runat=server.");
1770 protected override void FrameworkInitialize ()
1772 base.FrameworkInitialize ();
1774 InitializeStyleSheet ();
1785 ClientScriptManager ClientScript {
1786 get { return scriptManager; }
1791 static readonly object InitCompleteEvent = new object ();
1792 static readonly object LoadCompleteEvent = new object ();
1793 static readonly object PreInitEvent = new object ();
1794 static readonly object PreLoadEvent = new object ();
1795 static readonly object PreRenderCompleteEvent = new object ();
1796 static readonly object SaveStateCompleteEvent = new object ();
1798 const int initcomplete_mask = 1;
1799 const int loadcomplete_mask = 1 << 1;
1800 const int preinit_mask = 1 << 2;
1801 const int preload_mask = 1 << 3;
1802 const int prerendercomplete_mask = 1 << 4;
1803 const int savestatecomplete_mask = 1 << 5;
1805 [EditorBrowsable (EditorBrowsableState.Advanced)]
1806 public event EventHandler InitComplete {
1808 event_mask |= initcomplete_mask;
1809 Events.AddHandler (InitCompleteEvent, value);
1811 remove { Events.RemoveHandler (InitCompleteEvent, value); }
1814 [EditorBrowsable (EditorBrowsableState.Advanced)]
1815 public event EventHandler LoadComplete {
1817 event_mask |= loadcomplete_mask;
1818 Events.AddHandler (LoadCompleteEvent, value);
1820 remove { Events.RemoveHandler (LoadCompleteEvent, value); }
1823 public event EventHandler PreInit {
1825 event_mask |= preinit_mask;
1826 Events.AddHandler (PreInitEvent, value);
1828 remove { Events.RemoveHandler (PreInitEvent, value); }
1831 [EditorBrowsable (EditorBrowsableState.Advanced)]
1832 public event EventHandler PreLoad {
1834 event_mask |= preload_mask;
1835 Events.AddHandler (PreLoadEvent, value);
1837 remove { Events.RemoveHandler (PreLoadEvent, value); }
1840 [EditorBrowsable (EditorBrowsableState.Advanced)]
1841 public event EventHandler PreRenderComplete {
1843 event_mask |= prerendercomplete_mask;
1844 Events.AddHandler (PreRenderCompleteEvent, value);
1846 remove { Events.RemoveHandler (PreRenderCompleteEvent, value); }
1849 [EditorBrowsable (EditorBrowsableState.Advanced)]
1850 public event EventHandler SaveStateComplete {
1852 event_mask |= savestatecomplete_mask;
1853 Events.AddHandler (SaveStateCompleteEvent, value);
1855 remove { Events.RemoveHandler (SaveStateCompleteEvent, value); }
1858 protected virtual void OnInitComplete (EventArgs e)
1860 if ((event_mask & initcomplete_mask) != 0) {
1861 EventHandler eh = (EventHandler) (Events [InitCompleteEvent]);
1862 if (eh != null) eh (this, e);
1866 protected virtual void OnLoadComplete (EventArgs e)
1868 if ((event_mask & loadcomplete_mask) != 0) {
1869 EventHandler eh = (EventHandler) (Events [LoadCompleteEvent]);
1870 if (eh != null) eh (this, e);
1874 protected virtual void OnPreInit (EventArgs e)
1876 if ((event_mask & preinit_mask) != 0) {
1877 EventHandler eh = (EventHandler) (Events [PreInitEvent]);
1878 if (eh != null) eh (this, e);
1882 protected virtual void OnPreLoad (EventArgs e)
1884 if ((event_mask & preload_mask) != 0) {
1885 EventHandler eh = (EventHandler) (Events [PreLoadEvent]);
1886 if (eh != null) eh (this, e);
1890 protected virtual void OnPreRenderComplete (EventArgs e)
1892 if ((event_mask & prerendercomplete_mask) != 0) {
1893 EventHandler eh = (EventHandler) (Events [PreRenderCompleteEvent]);
1894 if (eh != null) eh (this, e);
1899 if (!Form.DetermineRenderUplevel ())
1902 /* figure out if we have some control we're going to focus */
1903 if (String.IsNullOrEmpty (_focusedControlID)) {
1904 _focusedControlID = Form.DefaultFocus;
1905 if (String.IsNullOrEmpty (_focusedControlID))
1906 _focusedControlID = Form.DefaultButton;
1909 if (!String.IsNullOrEmpty (_focusedControlID)) {
1910 ClientScript.RegisterWebFormClientScript ();
1911 ClientScript.RegisterStartupScript ("HtmlForm-DefaultButton-StartupScript",
1912 String.Format ("<script type=\"text/javascript\">\n" +
1914 "WebForm_AutoFocus('{0}');// -->\n" +
1915 "</script>\n", _focusedControlID));
1918 if (Form.SubmitDisabledControls && _hasEnabledControlArray) {
1919 ClientScript.RegisterWebFormClientScript ();
1920 ClientScript.RegisterOnSubmitStatement ("HtmlForm-SubmitDisabledControls-SubmitStatement",
1921 "WebForm_ReEnableControls(this);");
1925 internal void RegisterEnabledControl (Control control)
1927 if (Form == null || !Page.Form.SubmitDisabledControls || !Page.Form.DetermineRenderUplevel ())
1929 _hasEnabledControlArray = true;
1930 Page.ClientScript.RegisterArrayDeclaration (EnabledControlArrayID, String.Format ("'{0}'", control.ClientID));
1933 protected virtual void OnSaveStateComplete (EventArgs e)
1935 if ((event_mask & savestatecomplete_mask) != 0) {
1936 EventHandler eh = (EventHandler) (Events [SaveStateCompleteEvent]);
1937 if (eh != null) eh (this, e);
1941 public HtmlForm Form {
1942 get { return _form; }
1945 internal void RegisterForm (HtmlForm form)
1950 [BrowsableAttribute (false)]
1951 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
1952 public Page PreviousPage {
1954 if (_doLoadPreviousPage) {
1955 _doLoadPreviousPage = false;
1956 LoadPreviousPageReference ();
1958 return previousPage;
1963 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
1964 [BrowsableAttribute (false)]
1965 public bool IsCallback {
1966 get { return isCallback; }
1969 [BrowsableAttribute (false)]
1970 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
1971 public bool IsCrossPagePostBack {
1972 get { return isCrossPagePostBack; }
1975 public new virtual char IdSeparator {
1977 //TODO: why override?
1978 return base.IdSeparator;
1982 string ProcessCallbackData ()
1984 string callbackTarget = _requestValueCollection [CallbackSourceID];
1985 if (callbackTarget == null || callbackTarget.Length == 0)
1986 throw new HttpException ("Callback target not provided.");
1988 Control targetControl = FindControl (callbackTarget);
1989 ICallbackEventHandler target = targetControl as ICallbackEventHandler;
1991 throw new HttpException (string.Format ("Invalid callback target '{0}'.", callbackTarget));
1993 string callbackEventError = String.Empty;
1994 string callBackResult;
1995 string callbackArgument = _requestValueCollection [CallbackArgumentID];
1998 target.RaiseCallbackEvent (callbackArgument);
2000 catch (Exception ex) {
2001 callbackEventError = String.Format ("e{0}", ex.Message);
2005 callBackResult = target.GetCallbackResult ();
2007 catch (Exception ex) {
2008 return String.Format ("e{0}", ex.Message);
2011 string eventValidation = ClientScript.GetEventValidationStateFormatted ();
2012 return String.Format ("{0}{1}|{2}{3}", callbackEventError, eventValidation == null ? 0 : eventValidation.Length, eventValidation, callBackResult);
2015 [BrowsableAttribute (false)]
2016 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
2017 public HtmlHead Header {
2018 get { return htmlHeader; }
2021 internal void SetHeader (HtmlHead header)
2023 htmlHeader = header;
2024 if (_title != null) {
2025 htmlHeader.Title = _title;
2030 protected bool AsyncMode {
2031 get { return asyncMode; }
2032 set { asyncMode = value; }
2035 public TimeSpan AsyncTimeout {
2036 get { return asyncTimeout; }
2037 set { asyncTimeout = value; }
2040 public bool IsAsync {
2041 get { return AsyncMode; }
2044 [MonoTODO ("Not Implemented")]
2045 protected internal virtual string UniqueFilePathSuffix {
2047 throw new NotImplementedException ();
2051 [MonoTODO ("Not Implemented")]
2052 public int MaxPageStateFieldLength {
2054 throw new NotImplementedException ();
2057 throw new NotImplementedException ();
2061 public void AddOnPreRenderCompleteAsync (BeginEventHandler beginHandler, EndEventHandler endHandler)
2063 AddOnPreRenderCompleteAsync (beginHandler, endHandler, null);
2066 public void AddOnPreRenderCompleteAsync (BeginEventHandler beginHandler, EndEventHandler endHandler, Object state)
2069 throw new InvalidOperationException ("AddOnPreRenderCompleteAsync called and Page.IsAsync == false");
2072 if (_lifeCycle >= PageLifeCycle.PreRender) {
2073 throw new InvalidOperationException ("AddOnPreRenderCompleteAsync can only be called before PreRender.");
2076 if (beginHandler == null) {
2077 throw new ArgumentNullException ("beginHandler");
2080 if (endHandler == null) {
2081 throw new ArgumentNullException ("endHandler");
2084 RegisterAsyncTask (new PageAsyncTask (beginHandler, endHandler, null, state, false));
2087 private List<PageAsyncTask> ParallelTasks {
2090 if (parallelTasks == null) {
2091 parallelTasks = new List<PageAsyncTask>();
2093 return parallelTasks;
2097 private List<PageAsyncTask> SerialTasks {
2099 if (serialTasks == null) {
2100 serialTasks = new List<PageAsyncTask> ();
2106 public void RegisterAsyncTask (PageAsyncTask task)
2109 throw new ArgumentNullException ("task");
2112 if (task.ExecuteInParallel) {
2113 ParallelTasks.Add (task);
2116 SerialTasks.Add (task);
2120 public void ExecuteRegisteredAsyncTasks ()
2122 if ((parallelTasks == null || parallelTasks.Count == 0) &&
2123 (serialTasks == null || serialTasks.Count == 0)){
2127 if (parallelTasks != null) {
2128 DateTime startExecution = DateTime.Now;
2129 List<PageAsyncTask> localParallelTasks = parallelTasks;
2130 parallelTasks = null; // Shouldn't execute tasks twice
2131 List<IAsyncResult> asyncResults = new List<IAsyncResult>();
2132 foreach (PageAsyncTask parallelTask in localParallelTasks) {
2133 IAsyncResult result = parallelTask.BeginHandler (this, EventArgs.Empty, new AsyncCallback (EndAsyncTaskCallback), parallelTask.State);
2134 if (result.CompletedSynchronously) {
2135 parallelTask.EndHandler (result);
2138 asyncResults.Add (result);
2142 if (asyncResults.Count > 0) {
2144 TimeSpan timeout = AsyncTimeout;
2145 long t1 = DateTime.Now.Ticks;
2146 bool signalled = true;
2147 for (int i = 0; i < asyncResults.Count; i++) {
2148 if (asyncResults [i].IsCompleted)
2152 signalled = asyncResults [i].AsyncWaitHandle.WaitOne (timeout, false);
2155 long t2 = DateTime.Now.Ticks;
2156 timeout = AsyncTimeout - TimeSpan.FromTicks (t2 - t1);
2157 if (timeout.Ticks <= 0)
2161 localParallelTasks [i].TimeoutHandler (asyncResults [i]);
2165 WaitHandle [] waitArray = new WaitHandle [asyncResults.Count];
2167 for (i = 0; i < asyncResults.Count; i++) {
2168 waitArray [i] = asyncResults [i].AsyncWaitHandle;
2170 bool allSignalled = WaitHandle.WaitAll (waitArray, AsyncTimeout, false);
2171 if (!allSignalled) {
2172 for (i = 0; i < asyncResults.Count; i++) {
2173 if (!asyncResults [i].IsCompleted) {
2174 localParallelTasks [i].TimeoutHandler (asyncResults [i]);
2180 DateTime endWait = DateTime.Now;
2181 TimeSpan elapsed = endWait - startExecution;
2182 if (elapsed <= AsyncTimeout) {
2183 AsyncTimeout -= elapsed;
2186 AsyncTimeout = TimeSpan.FromTicks(0);
2190 if (serialTasks != null) {
2191 List<PageAsyncTask> localSerialTasks = serialTasks;
2192 serialTasks = null; // Shouldn't execute tasks twice
2193 foreach (PageAsyncTask serialTask in localSerialTasks) {
2194 DateTime startExecution = DateTime.Now;
2196 IAsyncResult result = serialTask.BeginHandler (this, EventArgs.Empty, new AsyncCallback (EndAsyncTaskCallback), serialTask);
2197 if (result.CompletedSynchronously) {
2198 serialTask.EndHandler (result);
2201 bool done = result.AsyncWaitHandle.WaitOne (AsyncTimeout, false);
2202 if (!done && !result.IsCompleted) {
2203 serialTask.TimeoutHandler (result);
2206 DateTime endWait = DateTime.Now;
2207 TimeSpan elapsed = endWait - startExecution;
2208 if (elapsed <= AsyncTimeout) {
2209 AsyncTimeout -= elapsed;
2212 AsyncTimeout = TimeSpan.FromTicks (0);
2216 AsyncTimeout = TimeSpan.FromSeconds (DefaultAsyncTimeout);
2219 void EndAsyncTaskCallback (IAsyncResult result)
2221 PageAsyncTask task = (PageAsyncTask)result.AsyncState;
2222 task.EndHandler (result);
2225 public static HtmlTextWriter CreateHtmlTextWriterFromType (TextWriter tw, Type writerType)
2227 Type htmlTextWriterType = typeof (HtmlTextWriter);
2229 if (!htmlTextWriterType.IsAssignableFrom (writerType)) {
2230 throw new HttpException (String.Format ("Type '{0}' cannot be assigned to HtmlTextWriter", writerType.FullName));
2233 ConstructorInfo constructor = writerType.GetConstructor (new Type [] { typeof (TextWriter) });
2234 if (constructor == null) {
2235 throw new HttpException (String.Format ("Type '{0}' does not have a consturctor that takes a TextWriter as parameter", writerType.FullName));
2238 return (HtmlTextWriter) Activator.CreateInstance(writerType, tw);
2241 public ViewStateEncryptionMode ViewStateEncryptionMode {
2242 get { return viewStateEncryptionMode; }
2243 set { viewStateEncryptionMode = value; }
2246 public void RegisterRequiresViewStateEncryption ()
2248 controlRegisteredForViewStateEncryption = true;
2251 private static byte [] AES_IV = null;
2252 private static byte [] TripleDES_IV = null;
2253 private static object locker = new object ();
2254 private static bool isEncryptionInitialized = false;
2256 private static void InitializeEncryption ()
2258 if (isEncryptionInitialized) {
2263 if (isEncryptionInitialized) {
2267 string iv_string = "0BA48A9E-736D-40f8-954B-B2F62241F282";
2268 AES_IV = new byte [16];
2269 TripleDES_IV = new byte [8];
2272 for (i = 0; i < AES_IV.Length; i++) {
2273 AES_IV [i] = (byte) iv_string [i];
2276 for (i = 0; i < TripleDES_IV.Length; i++) {
2277 TripleDES_IV [i] = (byte) iv_string [i];
2280 isEncryptionInitialized = true;
2284 internal ICryptoTransform GetCryptoTransform (CryptoStreamMode cryptoStreamMode)
2286 ICryptoTransform transform = null;
2287 MachineKeySection config = (MachineKeySection) WebConfigurationManager.GetSection (machineKeyConfigPath);
2288 byte [] vk = config.ValidationKeyBytes;
2290 switch (config.Validation) {
2291 case MachineKeyValidation.SHA1:
2292 transform = SHA1.Create ();
2295 case MachineKeyValidation.MD5:
2296 transform = MD5.Create ();
2299 case MachineKeyValidation.AES:
2300 if (cryptoStreamMode == CryptoStreamMode.Read){
2301 transform = Rijndael.Create().CreateDecryptor(vk, AES_IV);
2303 transform = Rijndael.Create().CreateEncryptor(vk, AES_IV);
2307 case MachineKeyValidation.TripleDES:
2308 if (cryptoStreamMode == CryptoStreamMode.Read){
2309 transform = TripleDES.Create().CreateDecryptor(vk, TripleDES_IV);
2311 transform = TripleDES.Create().CreateEncryptor(vk, TripleDES_IV);
2319 internal bool NeedViewStateEncryption {
2321 return (ViewStateEncryptionMode == ViewStateEncryptionMode.Always ||
2322 (ViewStateEncryptionMode == ViewStateEncryptionMode.Auto &&
2323 controlRegisteredForViewStateEncryption));
2328 void ApplyMasterPage ()
2330 if (masterPageFile != null && masterPageFile.Length > 0) {
2331 ArrayList appliedMasterPageFiles = new ArrayList ();
2333 if (Master != null) {
2334 MasterPage.ApplyMasterPageRecursive (Master, appliedMasterPageFiles);
2338 Controls.Add (Master);
2343 [DefaultValueAttribute ("")]
2344 public virtual string MasterPageFile {
2345 get { return masterPageFile; }
2347 masterPageFile = value;
2352 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
2353 [BrowsableAttribute (false)]
2354 public MasterPage Master {
2356 if (Context == null || String.IsNullOrEmpty (masterPageFile))
2359 if (masterPage == null)
2360 masterPage = MasterPage.CreateMasterPage (this, Context, masterPageFile, contentTemplates);
2366 public void SetFocus (string clientID)
2368 if (String.IsNullOrEmpty (clientID))
2369 throw new ArgumentNullException ("control");
2371 if (_lifeCycle > PageLifeCycle.PreRender)
2372 throw new InvalidOperationException ("SetFocus can only be called before and during PreRender.");
2375 throw new InvalidOperationException ("A form tag with runat=server must exist on the Page to use SetFocus() or the Focus property.");
2377 _focusedControlID = clientID;
2380 public void SetFocus (Control control)
2382 if (control == null)
2383 throw new ArgumentNullException ("control");
2385 SetFocus (control.ClientID);
2388 [EditorBrowsable (EditorBrowsableState.Advanced)]
2389 public void RegisterRequiresControlState (Control control)
2391 if (control == null)
2392 throw new ArgumentNullException ("control");
2394 if (RequiresControlState (control))
2397 if (requireStateControls == null)
2398 requireStateControls = new ArrayList ();
2399 int n = requireStateControls.Add (control);
2401 if (_savedControlState == null || n >= _savedControlState.Length)
2404 for (Control parent = control.Parent; parent != null; parent = parent.Parent)
2405 if (parent.IsChildControlStateCleared)
2408 object state = _savedControlState [n];
2410 control.LoadControlState (state);
2413 public bool RequiresControlState (Control control)
2415 if (requireStateControls == null) return false;
2416 return requireStateControls.Contains (control);
2419 [EditorBrowsable (EditorBrowsableState.Advanced)]
2420 public void UnregisterRequiresControlState (Control control)
2422 if (requireStateControls != null)
2423 requireStateControls.Remove (control);
2426 public ValidatorCollection GetValidators (string validationGroup)
2428 string valgr = validationGroup;
2430 valgr = String.Empty;
2432 if (_validatorsByGroup == null) _validatorsByGroup = new Hashtable ();
2433 ValidatorCollection col = _validatorsByGroup [valgr] as ValidatorCollection;
2435 col = new ValidatorCollection ();
2436 _validatorsByGroup [valgr] = col;
2441 public virtual void Validate (string validationGroup)
2443 is_validated = true;
2444 if (validationGroup == null)
2445 ValidateCollection (_validatorsByGroup [String.Empty] as ValidatorCollection);
2446 else if (_validatorsByGroup != null) {
2447 ValidateCollection (_validatorsByGroup [validationGroup] as ValidatorCollection);
2451 object SavePageControlState ()
2453 if (requireStateControls == null) return null;
2454 object[] state = new object [requireStateControls.Count];
2456 bool allNull = true;
2457 for (int n=0; n<state.Length; n++) {
2458 state [n] = ((Control) requireStateControls [n]).SaveControlState ();
2459 if (state [n] != null) allNull = false;
2461 if (allNull) return null;
2465 void LoadPageControlState (object data)
2467 _savedControlState = (object []) data;
2469 if (requireStateControls == null) return;
2471 int max = Math.Min (requireStateControls.Count, _savedControlState != null ? _savedControlState.Length : requireStateControls.Count);
2472 for (int n=0; n < max; n++) {
2473 Control ctl = (Control) requireStateControls [n];
2474 ctl.LoadControlState (_savedControlState != null ? _savedControlState [n] : null);
2478 void LoadPreviousPageReference ()
2480 if (_requestValueCollection != null) {
2481 string prevPage = _requestValueCollection [PreviousPageID];
2482 if (prevPage != null) {
2483 previousPage = (Page) PageParser.GetCompiledPageInstance (prevPage, Server.MapPath (prevPage), Context);
2484 previousPage.ProcessCrossPagePostBack (_context);
2490 Hashtable contentTemplates;
2491 [EditorBrowsable (EditorBrowsableState.Never)]
2492 protected internal void AddContentTemplate (string templateName, ITemplate template)
2494 if (contentTemplates == null)
2495 contentTemplates = new Hashtable ();
2496 contentTemplates [templateName] = template;
2499 PageTheme _pageTheme;
2500 internal PageTheme PageTheme {
2501 get { return _pageTheme; }
2504 PageTheme _styleSheetPageTheme;
2505 internal PageTheme StyleSheetPageTheme {
2506 get { return _styleSheetPageTheme; }
2511 internal void PushDataItemContext (object o) {
2512 if (dataItemCtx == null)
2513 dataItemCtx = new Stack ();
2515 dataItemCtx.Push (o);
2518 internal void PopDataItemContext () {
2519 if (dataItemCtx == null)
2520 throw new InvalidOperationException ();
2525 public object GetDataItem() {
2526 if (dataItemCtx == null || dataItemCtx.Count == 0)
2527 throw new InvalidOperationException ("No data item");
2529 return dataItemCtx.Peek ();
2532 protected internal override void OnInit (EventArgs e)
2536 ArrayList themes = new ArrayList();
2538 if (StyleSheetPageTheme != null && StyleSheetPageTheme.GetStyleSheets () != null)
2539 themes.AddRange (StyleSheetPageTheme.GetStyleSheets ());
2540 if (PageTheme != null && PageTheme.GetStyleSheets () != null)
2541 themes.AddRange (PageTheme.GetStyleSheets ());
2543 if (themes.Count > 0 && Header == null)
2544 throw new InvalidOperationException ("Using themed css files requires a header control on the page.");
2546 foreach (string lss in themes) {
2547 HtmlLink hl = new HtmlLink ();
2548 hl.Href = ResolveUrl (lss);
2549 hl.Attributes["type"] = "text/css";
2550 hl.Attributes["rel"] = "stylesheet";
2551 Header.Controls.Add (hl);
2558 [MonoTODO ("Not implemented. Only used by .net aspx parser")]
2559 protected object GetWrappedFileDependencies (string [] list)
2564 [MonoTODO ("Does nothing. Used by .net aspx parser")]
2565 protected virtual void InitializeCulture ()
2569 [MonoTODO ("Does nothing. Used by .net aspx parser")]
2570 protected internal void AddWrappedFileDependencies (object virtualFileDependencies)