MobileListItem.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / MIT / System / Web / UI / MobileControls / MobileListItem.cs / 1305376 / MobileListItem.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

using System; 
using System.Collections; 
using System.ComponentModel;
using System.Web; 
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Security.Permissions;
 
namespace System.Web.UI.MobileControls
{ 
    /* 
     * List Item type - enumeration.
     * 
     * Copyright (c) 2000 Microsoft Corporation
     */

    ///  
    [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 enum MobileListItemType 
    { 
        /// 
        HeaderItem, 
        /// 
        ListItem,
        /// 
        FooterItem, 
        /// 
        SeparatorItem 
    } 

    /* 
     * Mobile List Item class.
     *
     * Copyright (c) 2000 Microsoft Corporation
     */ 

    ///  
    [ 
        PersistName("Item"),
        ToolboxItem(false) 
    ]
    [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 MobileListItem : TemplateContainer, IStateManager
    { 
        private const int SELECTED = 0; 
        private const int MARKED = 1;
        private const int TEXTISDIRTY = 2; 
        private const int VALUEISDIRTY = 3;
        private const int SELECTIONISDIRTY = 4;

        private int _index; 
        private MobileListItemType _itemType;
        private Object _dataItem; 
        private String _text; 
        private String _value;
        private BitArray _flags; 

        /// 
        public MobileListItem() : this(null, null, null)
        { 
        }
 
        ///  
        public MobileListItem(String text) : this(null, text, null)
        { 
        }

        /// 
        public MobileListItem(String text, String value) : this(null, text, value) 
        {
        } 
 
        /// 
        public MobileListItem(MobileListItemType itemType) : this (null, null, null) 
        {
            _itemType = itemType;
        }
 
        /// 
        public MobileListItem(Object dataItem, String text, String value) 
        { 
            _index = -1;
            _dataItem = dataItem; 
            _text = text;
            _value = value;
            _flags = new BitArray(5);
            _itemType = MobileListItemType.ListItem; 
        }
 
        internal MobileListItemType ItemType 
        {
            get 
            {
                return _itemType;
            }
        } 

        ///  
        [ 
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
        ] 
        public int Index
        {
            get
            { 
                return _index;
            } 
        } 

        internal void SetIndex(int value) 
        {
            _index = value;
        }
 
        /// 
        public static implicit operator MobileListItem(String s) 
        { 
            return new MobileListItem(s);
        } 

        /// 
        [
            DefaultValue("") 
        ]
        public String Text 
        { 
            get
            { 
                String s;
                if (_text != null)
                {
                    s = _text; 
                }
                else if (_value != null) 
                { 
                    s = _value;
                } 
                else
                {
                    s = String.Empty;
                } 
                return s;
            } 
 
            set
            { 
                _text = value;
                if (((IStateManager)this).IsTrackingViewState)
                {
                    _flags.Set (TEXTISDIRTY,true); 
                }
            } 
        } 

        ///  
        [
            DefaultValue("")
        ]
        public String Value 
        {
            get 
            { 
                String s;
                if (_value != null) 
                {
                    s = _value;
                }
                else if (_text != null) 
                {
                    s = _text; 
                } 
                else
                { 
                    s = String.Empty;
                }
                return s;
            } 

            set 
            { 
                _value = value;
                if (_flags.Get (MARKED)) 
                {
                    _flags.Set (VALUEISDIRTY,true);
                }
            } 
        }
 
        ///  
        [
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), 
        ]
        public Object DataItem
        {
            get 
            {
                return _dataItem; 
            } 
            set
            { 
                _dataItem = value;
            }
        }
 
        /// 
        public override bool Equals(Object o) 
        { 
            MobileListItem other = o as MobileListItem;
            if (other != null) 
            {
                return Value.Equals(other.Value) && Text.Equals(other.Text);
            }
            return false; 
        }
 
        ///  
        public override int GetHashCode()
        { 
            return Value.GetHashCode();
        }

        ///  
        public static MobileListItem FromString(String s)
        { 
            return new MobileListItem(s); 
        }
 
        /// 
        public override String ToString()
        {
            return Text; 
        }
 
        ///////////////////////////////////////////////////////////////////////// 
        //  STATE MANAGEMENT, FOR ITEM'S DATA (NON-CONTROL) STATE.
        ///////////////////////////////////////////////////////////////////////// 

        internal virtual Object SaveDataState()
        {
            String sa0 = _flags.Get(TEXTISDIRTY) ? _text : null; 
            String sa1 = _flags.Get(VALUEISDIRTY) ? _value : null;
 
            if (sa0 == null && sa1 == null) 
            {
                return null; 
            }
            else
            {
                return new String[2] { sa0, sa1 }; 
            }
        } 
 
        internal virtual void LoadDataState(Object state)
        { 
            if (state != null)
            {
                String[] sa = (String[])state;
                if (sa[0] != null) 
                {
                    Text = sa[0]; 
                } 
                if (sa[1] != null)
                { 
                    Value = sa[1];
                }
            }
        } 

        ///  
        protected new bool IsTrackingViewState 
        {
            get 
            {
                return _flags.Get (MARKED);
            }
        } 

        ///  
        protected new void LoadViewState(Object state) 
        {
            LoadDataState (state); 
        }

        /// 
        protected new void TrackViewState() 
        {
            _flags.Set (MARKED, true); 
        } 

        ///  
        protected new Object SaveViewState()
        {
            return SaveDataState ();
        } 

        internal virtual bool Dirty 
        { 
            get
            { 
                return (_flags.Get(TEXTISDIRTY) || _flags.Get(VALUEISDIRTY));
            }
            set
            { 
                _flags.Set (TEXTISDIRTY, value);
                _flags.Set (VALUEISDIRTY, value); 
            } 
        }
 
        internal bool SelectionDirty
        {
            get
            { 
                return _flags.Get(SELECTIONISDIRTY);
            } 
            set 
            {
                _flags.Set (SELECTIONISDIRTY, value); 
            }
        }

        ///  
        /// 
        ///    Specifies a value indicating whether the 
        ///       item is selected. 
        /// 
        [ 
            DefaultValue(false)
        ]
        public bool Selected {
            get { 
                return _flags.Get(SELECTED);
            } 
            set { 
                _flags.Set(SELECTED,value);
                if (((IStateManager)this).IsTrackingViewState) 
                {
                    SelectionDirty = true;
                }
            } 
        }
 
        ///////////////////////////////////////////////////////////////////////// 
        //  EVENT BUBBLING
        ///////////////////////////////////////////////////////////////////////// 

        /// 
        protected override bool OnBubbleEvent(Object source, EventArgs e)
        { 
            if (e is CommandEventArgs)
            { 
                ListCommandEventArgs args = new ListCommandEventArgs(this, source, (CommandEventArgs)e); 
                RaiseBubbleEvent (this, args);
                return true; 
            }
            return false;
        }
 
        #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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MobileListItem.cs source code in C# .NET

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