//
// Authors:
// Ben Maurer (bmaurer@users.sourceforge.net)
+// Sebastien Pouliot <sebastien@ximian.com>
//
// (C) 2003 Ben Maurer
-//
-
+// Copyright (C) 2005 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
//
#if NET_2_0
+
using System.Collections;
-using System.Collections.Specialized;
-using System.Text;
namespace System.Web.UI {
+
public abstract class StateManagedCollection : IList, IStateManager {
-
- protected abstract object CreateKnownType (int index);
+
+ ArrayList items = new ArrayList ();
+ bool saveEverything = false;
+ IStateManager[] originalItems;
+
+ protected virtual object CreateKnownType (int index)
+ {
+ return null;
+ }
+
+ public void SetDirty ()
+ {
+ saveEverything = true;
+ }
+
protected abstract void SetDirtyObject (object o);
+
protected virtual Type [] GetKnownTypes ()
{
return null;
#region IStateManager
void IStateManager.LoadViewState (object savedState)
{
- int pos = -1;
- foreach (Pair p in (ArrayList)savedState) {
- pos ++;
-
- if (p == null)
- continue;
- IStateManager itm;
+ if (savedState == null) {
+ foreach (IStateManager item in items)
+ item.LoadViewState (null);
+ return;
+ }
+
+ object[] its = (object[]) savedState;
+
+ saveEverything = (bool)its [0];
+
+ if (saveEverything)
+ items.Clear ();
+
+ for (int n=1; n<its.Length; n++) {
+ int oi;
+ object state;
+ object type;
- if (p.Second is Type)
- itm = (IStateManager) Activator.CreateInstance ((Type) p.Second);
- else
- itm = (IStateManager) CreateKnownType ((int) p.Second);
+ Triplet triplet = its [n] as Triplet;
+ if (triplet != null) {
+ oi = (int) triplet.First;
+ state = triplet.Second;
+ type = triplet.Third;
+ } else {
+ Pair pair = (Pair) its [n];
+ oi = (int) pair.First;
+ state = pair.Second;
+ type = null;
+ }
- itm.LoadViewState (p.First);
+ IStateManager item;
+ if (oi != -1)
+ item = originalItems [oi];
+ else {
+ if (type is Type)
+ item = (IStateManager) Activator.CreateInstance ((Type) type);
+ else
+ item = (IStateManager) CreateKnownType ((int) type);
+ }
- if (pos >= Count)
- items.Add (itm);
- else
- items [pos] = itm;
+ if (saveEverything) ((IList)this).Add (item);
+ item.LoadViewState (state);
}
}
object IStateManager.SaveViewState ()
{
- ArrayList saved = new ArrayList ();
- Type [] knownTypes = GetKnownTypes ();
+ object[] state = null;
+ bool hasData = false;
+ Type[] knownTypes = GetKnownTypes ();
- foreach (IStateManager itm in items) {
- object state = itm.SaveViewState ();
- if (state == null && !saveEverything) {
- saved.Add (null);
- continue;
+ if (saveEverything) {
+ state = new object [items.Count + 1];
+ state [0] = true;
+ for (int n=0; n<items.Count; n++)
+ {
+ IStateManager item = (IStateManager) items [n];
+ int oi = Array.IndexOf (originalItems, item);
+ object ns = item.SaveViewState ();
+ if (ns != null) hasData = true;
+
+ if (oi == -1) {
+ Type t = item.GetType ();
+ int idx = knownTypes == null ? -1 : Array.IndexOf (knownTypes, t);
+ if (idx != -1)
+ state [n + 1] = new Triplet (oi, ns, idx);
+ else
+ state [n + 1] = new Triplet (oi, ns, t);
+ }
+ else
+ state [n + 1] = new Pair (oi, ns);
+ }
+ } else {
+ ArrayList list = new ArrayList ();
+ for (int n=0; n<items.Count; n++) {
+ IStateManager item = (IStateManager) items [n];
+ object ns = item.SaveViewState ();
+ if (ns != null) {
+ hasData = true;
+ list.Add (new Pair (n, ns));
+ }
+ }
+ if (hasData) {
+ list.Insert (0, false);
+ state = list.ToArray ();
}
-
- Pair p = new Pair ();
- p.First = state;
-
- Type t = itm.GetType ();
- int idx = -1;
- if (knownTypes != null)
- idx = Array.IndexOf (knownTypes, t);
-
- if (idx != -1)
- p.Second = idx;
- else
- p.Second = t;
-
- saved.Add (p);
}
- return saved;
+ if (hasData)
+ return state;
+ else
+ return null;
}
void IStateManager.TrackViewState ()
{
isTrackingViewState = true;
-
- foreach (IStateManager i in items)
- i.TrackViewState ();
+ originalItems = new IStateManager [items.Count];
+ for (int n=0; n<items.Count; n++) {
+ originalItems [n] = (IStateManager) items [n];
+ originalItems [n].TrackViewState ();
+ }
+
}
bool isTrackingViewState;
items.Clear ();
this.OnClearComplete ();
- SetSaveEverything ();
- }
-
- public int IndexOf (object o)
- {
- if (o == null)
- return -1;
- return items.IndexOf (o);
- }
-
- public bool Contains (object o)
- {
- return o != null && items.Contains (o);
+ if (isTrackingViewState)
+ saveEverything = true;
}
public IEnumerator GetEnumerator ()
return items.GetEnumerator ();
}
- void System.Collections.ICollection.CopyTo (Array array, int index)
+ public void CopyTo (Array array, int index)
{
items.CopyTo (array, index);
}
if (isTrackingViewState) {
((IStateManager) value).TrackViewState ();
SetDirtyObject (value);
+ saveEverything = true;
}
OnInsert (-1, value);
if (isTrackingViewState) {
((IStateManager) value).TrackViewState ();
SetDirtyObject (value);
+ saveEverything = true;
}
OnInsert (index, value);
items.Insert (index, value);
OnInsertComplete(index, value);
-
- SetSaveEverything ();
}
void IList.Remove (object value)
if (value == null)
return;
OnValidate (value);
- ((IList)this).RemoveAt (IndexOf (value));
+ int i = items.IndexOf (value);
+ if (i >= 0)
+ ((IList)this).RemoveAt (i);
}
+
void IList.RemoveAt (int index)
{
object o = items [index];
items.RemoveAt (index);
OnRemoveComplete(index, o);
- SetSaveEverything ();
+ if (isTrackingViewState)
+ saveEverything = true;
}
void IList.Clear ()
return false;
OnValidate (value);
- return Contains (value);
+ return items.Contains (value);
}
int IList.IndexOf (object value)
return -1;
OnValidate (value);
- return IndexOf (value);
+ return items.IndexOf (value);
}
public int Count {
if (isTrackingViewState) {
((IStateManager) value).TrackViewState ();
SetDirtyObject (value);
+ saveEverything = true;
}
items [index] = value;
}
}
#endregion
-
- ArrayList items = new ArrayList ();
-
- bool saveEverything = false;
- void SetSaveEverything ()
- {
- if (isTrackingViewState)
- saveEverything = true;
- }
}
}
#endif
projects / mono.git / blobdiff