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//
// System.Web.UI.UserControl.cs
//
// Authors:
// Gonzalo Paniagua Javier (gonzalo@ximian.com)
// Andreas Nahr (ClassDevelopment@A-SoftTech.com)
//
// (C) 2002 Ximian, Inc (http://www.ximian.com)
//
using System;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.ComponentModel.Design.Serialization;
using System.Web.Caching;
using System.Web.SessionState;
namespace System.Web.UI
{
[ControlBuilder (typeof (UserControlControlBuilder))]
[DefaultEvent ("Load"), DesignerCategory ("ASPXCodeBehind")]
[ToolboxItem (false), ParseChildren (true)]
[Designer ("System.Web.UI.Design.UserControlDesigner, " + Consts.AssemblySystem_Design, typeof (IDesigner))]
[Designer ("Microsoft.VSDesigner.WebForms.WebFormDesigner, " + Consts.AssemblyMicrosoft_VSDesigner, typeof (IRootDesigner))]
[RootDesignerSerializer ("Microsoft.VSDesigner.WebForms.RootCodeDomSerializer, " + Consts.AssemblyMicrosoft_VSDesigner, "System.ComponentModel.Design.Serialization.CodeDomSerializer, " + Consts.AssemblySystem_Design, true)]
public class UserControl : TemplateControl, IAttributeAccessor, IUserControlDesignerAccessor
{
private bool initialized;
private AttributeCollection attributes;
private StateBag attrBag;
public UserControl ()
{
//??
}
[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
[Browsable (false)]
public HttpApplicationState Application
{
get {
Page p = Page;
if (p == null)
return null;
return p.Application;
}
}
private void EnsureAttributes ()
{
if (attributes == null) {
attrBag = new StateBag (true);
if (IsTrackingViewState)
attrBag.TrackViewState ();
attributes = new AttributeCollection (attrBag);
}
}
[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
[Browsable (false)]
public AttributeCollection Attributes
{
get {
return attributes;
}
}
[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
[Browsable (false)]
public Cache Cache
{
get {
Page p = Page;
if (p == null)
return null;
return p.Cache;
}
}
[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
[Browsable (false)]
public bool IsPostBack
{
get {
Page p = Page;
if (p == null)
return false;
return p.IsPostBack;
}
}
[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
[Browsable (false)]
public HttpRequest Request
{
get {
Page p = Page;
if (p == null)
return null;
return p.Request;
}
}
[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
[Browsable (false)]
public HttpResponse Response
{
get {
Page p = Page;
if (p == null)
return null;
return p.Response;
}
}
[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
[Browsable (false)]
public HttpServerUtility Server
{
get {
Page p = Page;
if (p == null)
return null;
return p.Server;
}
}
[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
[Browsable (false)]
public HttpSessionState Session
{
get {
Page p = Page;
if (p == null)
return null;
return p.Session;
}
}
[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
[Browsable (false)]
public TraceContext Trace
{
get {
Page p = Page;
if (p == null)
return null;
return p.Trace;
}
}
[EditorBrowsable (EditorBrowsableState.Never)]
public void DesignerInitialize ()
{
InitRecursive (null);
}
[EditorBrowsable (EditorBrowsableState.Never)]
public void InitializeAsUserControl (Page page)
{
if (initialized)
return;
initialized = true;
this.Page = page;
WireupAutomaticEvents ();
FrameworkInitialize ();
}
public string MapPath (string virtualPath)
{
return Request.MapPath (virtualPath, TemplateSourceDirectory, true);
}
protected override void LoadViewState (object savedState)
{
if (savedState != null) {
Pair p = (Pair) savedState;
base.LoadViewState (p.First);
if (p.Second != null) {
EnsureAttributes ();
attrBag.LoadViewState (p.Second);
}
}
}
protected override void OnInit (EventArgs e)
{
InitializeAsUserControl (Page);
base.OnInit(e);
}
protected override object SaveViewState ()
{
object baseState = base.SaveViewState();
object attrState = null;
if (attributes != null)
attrState = attrBag.SaveViewState ();
if (baseState == null && attrState == null)
return null;
return new Pair (baseState, attrState);
}
string IAttributeAccessor.GetAttribute (string name)
{
if (attributes == null)
return null;
return attributes [name];
}
void IAttributeAccessor.SetAttribute (string name, string value)
{
EnsureAttributes ();
Attributes [name] = value;
}
string IUserControlDesignerAccessor.InnerText
{
get {
string innerText = ((string) ViewState["!DesignTimeInnerText"]);
if (innerText == null)
return string.Empty;
return innerText;
}
set { ViewState["!DesignTimeInnerText"] = value; }
}
string IUserControlDesignerAccessor.TagName
{
get {
string innerTag = ((string) ViewState["!DesignTimeTagName"]);
if (innerTag == null)
return string.Empty;
return innerTag;
}
set { ViewState["!DesignTimeTagName"] = value; }
}
}
}
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