Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / MIT / System / Web / UI / MobileControls / ObjectListFieldCollection.cs / 1305376 / ObjectListFieldCollection.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- using System; using System.Collections; using System.Diagnostics; using System.Globalization; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.HtmlControls; using System.Security.Permissions; namespace System.Web.UI.MobileControls { /* * Object List Field Collection class. * * Copyright (c) 2000 Microsoft Corporation */ ///[AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] [Obsolete("The System.Web.Mobile.dll assembly has been deprecated and should no longer be used. For information about how to develop ASP.NET mobile applications, see http://go.microsoft.com/fwlink/?LinkId=157231.")] public class ObjectListFieldCollection : ArrayListCollectionBase, IObjectListFieldCollection, IStateManager { private ObjectList _owner; private bool _marked = false; private bool _fieldsSetDirty = false; // Used for primary field collection (the one modified by the user). internal ObjectListFieldCollection(ObjectList owner) : base(new ArrayList()) { _owner = owner; } // Used for autogenerated field collections. internal ObjectListFieldCollection(ObjectList owner, ArrayList fields) : base(fields) { _owner = owner; foreach (ObjectListField field in fields) { field.SetOwner(owner); } } /// public ObjectListField[] GetAll() { int n = Count; ObjectListField[] allFields = new ObjectListField[n]; if (n > 0) { Items.CopyTo(0, allFields, 0, n); } return allFields; } /// public void SetAll(ObjectListField[] value) { Items = new ArrayList(value); foreach(ObjectListField field in Items) { field.SetOwner(_owner); } if(_marked) { SetFieldsDirty(); } } /// public ObjectListField this[int index] { get { return (ObjectListField)Items[index]; } } /// public void Add(ObjectListField field) { AddAt(-1, field); } /// public void AddAt(int index, ObjectListField field) { if (index == -1) { Items.Add(field); } else { Items.Insert(index, field); } if (_marked) { if (!_fieldsSetDirty && index > -1) { SetFieldsDirty(); } else { ((IStateManager)field).TrackViewState(); field.SetDirty(); } } field.SetOwner(_owner); NotifyOwnerChange(); } private void SetFieldsDirty() { foreach (ObjectListField fld in Items) { ((IStateManager)fld).TrackViewState(); fld.SetDirty(); } _fieldsSetDirty = true; } /// public void Clear() { Items.Clear(); if (_marked) { // Each field will be marked dirty as it is added. _fieldsSetDirty = true; } NotifyOwnerChange(); } /// public void RemoveAt(int index) { if ((index >= 0) && (index < Count)) { Items.RemoveAt(index); } if(_marked && !_fieldsSetDirty) { SetFieldsDirty(); } NotifyOwnerChange(); } /// public void Remove(ObjectListField field) { int index = IndexOf(field); if (index >= 0) { RemoveAt(index); } } /// public int IndexOf(ObjectListField field) { if (field != null) { return Items.IndexOf(field, 0, Count); } return -1; } /// public int IndexOf(String fieldIDOrName) { ArrayList fields = Items; int i = 0; foreach (ObjectListField field in fields) { String id = field.UniqueID; if (id != null && String.Compare(id, fieldIDOrName, StringComparison.OrdinalIgnoreCase) == 0) { return i; } i++; } return -1; } private void NotifyOwnerChange() { if (_owner != null) { _owner.OnFieldChanged(true); // fieldAddedOrRemoved = true } } ///////////////////////////////////////////////////////////////////////// // STATE MANAGEMENT ///////////////////////////////////////////////////////////////////////// /// protected bool IsTrackingViewState { get { return _marked; } } /// protected void TrackViewState() { _marked = true; foreach (IStateManager field in Items) { field.TrackViewState(); } } /// protected void LoadViewState(Object savedState) { if (savedState != null) { Object[] stateArray = (Object[]) savedState; bool allFieldsSaved = (bool) stateArray[0]; if (allFieldsSaved) { // All fields are in view state. Any fields loaded until now are invalid. ClearFieldsViewState(); } Object[] fieldStates = (Object[])stateArray[1]; EnsureCount(fieldStates.Length); for (int i = 0; i < fieldStates.Length; i++) { ((IStateManager)Items[i]).LoadViewState(fieldStates[i]); } if (allFieldsSaved) { SetFieldsDirty(); } } } /// protected Object SaveViewState() { int fieldsCount = Count; if (fieldsCount > 0) { Object[] fieldStates = new Object[fieldsCount]; bool haveState = _fieldsSetDirty; for (int i = 0; i < fieldsCount; i++) { fieldStates[i] = ((IStateManager)Items[i]).SaveViewState(); if (fieldStates[i] != null) { haveState = true; } } if (haveState) { return new Object[]{_fieldsSetDirty, fieldStates}; } } return null; } private void EnsureCount(int count) { int diff = Count - count; if (diff > 0) { Items.RemoveRange(count, diff); NotifyOwnerChange(); } else { // Set owner = null, to avoid multiple change notifications. // We'll call it just once later. ObjectList prevOwner = _owner; _owner = null; for (int i = diff; i < 0; i++) { ObjectListField field = new ObjectListField(); Add(field); field.SetOwner(prevOwner); } _owner = prevOwner; NotifyOwnerChange(); } } private void ClearFieldsViewState() { foreach (ObjectListField field in Items) { field.ClearViewState(); } } #region Implementation of IStateManager /// bool IStateManager.IsTrackingViewState { get { return IsTrackingViewState; } } /// void IStateManager.LoadViewState(object state) { LoadViewState(state); } /// void IStateManager.TrackViewState() { TrackViewState(); } /// object IStateManager.SaveViewState() { return SaveViewState(); } #endregion } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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