StyleSheet.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / MIT / System / Web / UI / MobileControls / StyleSheet.cs / 1305376 / StyleSheet.cs

                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

using System; 
using System.Collections; 
using System.Collections.Specialized;
using System.ComponentModel; 
using System.ComponentModel.Design;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Design; 
using System.Globalization;
using System.Web; 
using System.Web.Mobile; 
using System.Web.UI;
using System.Web.UI.Design.WebControls; 
using System.Web.UI.HtmlControls;
using System.Web.Util;
using System.Reflection;
using System.Security.Permissions; 

namespace System.Web.UI.MobileControls 
{ 

    /* 
     * Mobile StyleSheet class.
     */
    /// 
    [ 
        ControlBuilderAttribute(typeof(StyleSheetControlBuilder)),
        Designer(typeof(System.Web.UI.Design.MobileControls.StyleSheetDesigner)), 
        Editor(typeof(System.Web.UI.Design.MobileControls.StyleSheetComponentEditor), 
            typeof(ComponentEditor)),
        ToolboxData("<{0}:StyleSheet runat=\"server\">"), 
        ToolboxItem(typeof(System.Web.UI.Design.WebControlToolboxItem))
    ]
    [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 StyleSheet : MobileControl 
    { 
        private readonly static StyleSheet _default = new StyleSheet();
        private StyleCollection _styles = new StyleCollection(); 
        private StyleSheet _externalStyleSheet;
        private ArrayList _duplicateStyles = new ArrayList();
        private StyleSheet _referrer;
        private String _resolvedPath; 
        private bool _saveAll = false;
 
        static StyleSheet() 
        {
            //  initialize default stylesheet 
            {
                Style title = new Style();
                title.Bold = BooleanOption.True;
                title.Font.Size = FontSize.Large; 
                title.Name = "title";
                _default.AddParsedSubObject(title); 
 
                Style error = new Style();
                error.ForeColor = Color.Red; 
                error.Name = Constants.ErrorStyle;
                _default.AddParsedSubObject(error);

                Style subCommand = new Style(); 
                subCommand.Font.Size = FontSize.Small;
                subCommand.Name = "subcommand"; 
                subCommand.Alignment = Alignment.Center; 
                _default.AddParsedSubObject(subCommand);
            } 
        }

        /// 
        public static StyleSheet Default 
        {
            get 
            { 
                return _default;
            } 
        }

        /// 
        protected override void AddParsedSubObject(Object o) 
        {
            if (o is Style) 
            { 
                Style style = (Style)o;
                style.SetControl(this); 
                String name = style.Name;
                if (String.IsNullOrEmpty(name)) {
                    throw new Exception(
                        SR.GetString(SR.StyleSheet_MustContainID)); 
                }
                // Remember any duplicate styles we encounter.  Validate() 
                // will throw if this list is not empty. 
                String lowerName = name.ToLower(CultureInfo.InvariantCulture);
                if (_styles[lowerName] != null) 
                {
                    _duplicateStyles.Add(style);
                }
                else 
                {
                    // Do not overwrite hash table with duplicate style or we 
                    // will loose the overwritten style in the designer. 
                    this[name] = style;
                } 
            }
            else
            {
                base.AddParsedSubObject(o); 
            }
        } 
 
        /// 
        public Style this[String name] 
        {
            get
            {
                Style style = (Style)_styles[name.ToLower(CultureInfo.InvariantCulture)]; 
                if (style == null && ExternalStyleSheet != null)
                { 
                    style = _externalStyleSheet[name]; 
                }
                return style; 
            }
            set
            {
                if (String.IsNullOrEmpty(name)) { 
                    throw new ArgumentException(SR.GetString(SR.Style_EmptyName));
                } 
 
                if (!String.Equals(name, value.Name, StringComparison.OrdinalIgnoreCase)) {
                    // If the Style doesn't yet have a name, assign it the one that 
                    // it's being set as in the Stylesheet.
                    Debug.Assert(value.Name != null);

                    if (value.Name.Length == 0) { 
                        value.Name = name;
                    } 
                    else { 
                        throw new ArgumentException(
                            SR.GetString(SR.StyleSheet_InvalidStyleName, 
                                         value.Name, name));
                    }
                }
 
                if (value.Control == null)
                { 
                    // Necessary for programmatically generated styles...  need 
                    // to have their stylesheet set when inserted.
                    value.SetControl(this); 
                }
                else if (value.Control != this && MobilePage != null && !MobilePage.DesignMode)
                {
                    // In the rare event that someone tries to share a 
                    // style between stylesheets.  (Don't do this check in
                    // design mode, as they do share styles, although in a very 
                    // careful way that doesn't cause problems.) 
                    throw new Exception(
                        SR.GetString(SR.StyleSheet_StyleAlreadyOwned, 
                                     value.Name,
                                     value.Control.ID));
                }
 
                String lowerName = name.ToLower(CultureInfo.InvariantCulture);
 
                if (_styles[lowerName] != null) 
                {
                    _saveAll = true; 
                }
                else if (IsTrackingViewState)
                {
                    value.SetDirty(); 
                    ((IStateManager)value).TrackViewState();
                } 
 
                _styles[lowerName] = value;
            } 
        }

        /// 
        [ 
            Browsable(false),
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), 
        ] 
        public ICollection Styles
        { 
            get
            {
                return (ICollection)_styles;
            } 
        }
 
        ///  
        public void Remove(String name)
        { 
            _saveAll = true;
            if (!_styles.Remove (name))
            {
                throw new ArgumentException(SR.GetString(SR.Style_StyleNotFound, name)); 
            }
        } 
 
        /// 
        [ 
            Bindable(true),
            DefaultValue(""),
            Editor(typeof(System.Web.UI.Design.MobileControls.StyleSheetRefUrlEditor), typeof(UITypeEditor)),
            MobileCategory(SR.Category_Behavior), 
            MobileSysDescription(SR.StyleSheet_ReferencePath)
        ] 
        public String ReferencePath 
        {
            get 
            {
                String s = (String)ViewState["ReferencePath"];
                return s != null ? s : String.Empty;
            } 
            set
            { 
                ViewState["ReferencePath"] = value; 
                _externalStyleSheet = null;
            } 
        }

        private StyleSheet ExternalStyleSheet
        { 
            get
            { 
                // If page is null then this is the default stylesheet 
                if (Page == null || MobilePage.DesignMode)
                { 
                    return null;
                }

                if (_externalStyleSheet == null && ReferencePath.Length > 0) 
                {
                    // Should load relative to parent template control (which 
                    // may be a page or a user control). 

                    TemplateControl parent = (TemplateControl)Parent; 

                    // First check if there are any circular references.

                    String resolvedPath = UrlPath.Combine(parent.TemplateSourceDirectory, 
                                                          ReferencePath);
                    for (StyleSheet ss = Referrer; ss != null; ss = ss.Referrer) 
                    { 
                        if (ss.ResolvedPath != null &&
                                String.Compare(ss.ResolvedPath, resolvedPath, StringComparison.OrdinalIgnoreCase) == 0) 
                        {
                            throw new Exception(SR.GetString(SR.StyleSheet_LoopReference,
                                                             ResolvedPath));
                        } 
                    }
 
                    Control control = parent.LoadControl(ReferencePath); 

                    // By adding it as a child of this control, the user 
                    // control returned above is instantiated and its
                    // children are accessible below.
                    Controls.Add(control);
 
                    foreach (Control child in control.Controls)
                    { 
                        _externalStyleSheet = child as StyleSheet; 
                        if (_externalStyleSheet != null)
                        { 
                            break;
                        }
                    }
                    if (_externalStyleSheet == null) 
                    {
                        throw new Exception( 
                            SR.GetString(SR.StyleSheet_NoStyleSheetInExternalFile)); 
                    }
 
                    _externalStyleSheet.ResolvedPath = resolvedPath;
                    _externalStyleSheet.Referrer = this;
                }
                return _externalStyleSheet; 
            }
        } 
 
        internal override void ApplyDeviceSpecifics()
        { 
            // Apply our own device specifics first

            base.ApplyDeviceSpecifics();
 
            // Iterate over the Styles, invoking ApplyProperties on each Style's
            // DeviceSpecific. 
 
            foreach (String key in _styles.Keys)
            { 
                Style style = _styles[key];
                if (style.DeviceSpecific != null)
                {
                    style.DeviceSpecific.ApplyProperties(); 
                }
            } 
        } 

        private StyleSheet Referrer 
        {
            get
            {
                return _referrer; 
            }
 
            set 
            {
                _referrer = value; 
            }
        }

        private String ResolvedPath 
        {
            get 
            { 
                return _resolvedPath;
            } 

            set
            {
                _resolvedPath = value; 
            }
        } 
 
        /// 
        protected override void TrackViewState() 
        {
            for (int i = 0; i < _styles.Count; i++)
            {
                ((IStateManager)_styles.GetAt(i)).TrackViewState(); 
            }
            base.TrackViewState(); 
        } 

        internal override bool RequiresForm 
        {
            get
            {
                return false; 
            }
        } 
 
        /// 
        protected override Object SaveViewState() 
        {
            Object baseState = base.SaveViewState();

            int styleCount = _styles.Count; 
            Object[] stylesState = new Object[styleCount];
 
            if (_saveAll) 
            {
                for (int i = 0; i < styleCount; i++) 
                {
                    Style style = (Style)_styles.GetAt(i);
                    style.SetDirty();
                    stylesState[i] = ((IStateManager)style).SaveViewState(); 
                }
            } 
            else 
            {
                bool anySaved = false; 
                for (int i = 0; i < styleCount; i++)
                {
                    Style style = (Style)_styles.GetAt(i);
                    stylesState[i] = ((IStateManager)style).SaveViewState(); 
                    if (stylesState[i] != null)
                    { 
                        anySaved = true; 
                    }
                } 

                if (!anySaved)
                {
                    stylesState = null; 
                }
            } 
 
            if (stylesState != null || baseState != null)
            { 
                return new Object[] { baseState, _saveAll, stylesState };
            }
            else
            { 
                return null;
            } 
        } 

        ///  
        protected override void LoadViewState(Object savedState)
        {
            if (savedState != null)
            { 
                Object[] o = (Object[])savedState;
                base.LoadViewState(o[0]); 
 
                if (o[2] != null)
                { 
                    bool savedAll = (bool)o[1];
                    Object[] stylesState = (Object[])o[2];

                    if (savedAll) 
                    {
                        _saveAll = true; 
                        _styles.Clear(); 
                    }
 
                    int stylesCount = _styles.Count;
                    for (int i = 0; i < stylesState.Length; i++)
                    {
                        if (i >= stylesCount) 
                        {
                            Style style = new Style(); 
                            IStateManager styleStateMgr = (IStateManager)style; 

                            styleStateMgr.LoadViewState(stylesState[i]); 
                            styleStateMgr.TrackViewState();
                            style.SetControl(this);
                            _styles[style.Name.ToLower(CultureInfo.InvariantCulture)] = style;
                        } 
                        else if (stylesState != null)
                        { 
                            ((IStateManager)_styles.GetAt(i)).LoadViewState(stylesState[i]); 
                        }
                    } 
                }
            }
        }
 
        /////////////////////////////////////////////////////////////////////////
        //  BEGIN DESIGNER SUPPORT 
        ///////////////////////////////////////////////////////////////////////// 

        ///  
        public void Clear()
        {
            _styles.Clear();
        } 

        // Do not expose the Visible property in the Designer 
        ///  
        [
            Bindable(false), 
            Browsable(false),
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
        ]
        public override bool Visible 
        {
            get 
            { 
                //
 
                return base.Visible;
            }
            set
            { 
                base.Visible = value;
            } 
        } 

        // Do not expose the EnableViewState property in the Designer 
        /// 
        [
            Bindable(false),
            Browsable(false), 
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
        ] 
        public override bool EnableViewState 
        {
            get 
            {
                return base.EnableViewState;
            }
            set 
            {
                base.EnableViewState = value; 
            } 
        }
 

        /////////////////////////////////////////////////////////////////////////
        //  END DESIGNER SUPPORT
        ///////////////////////////////////////////////////////////////////////// 

        ///////////////////////////////////////////////////////////////////////// 
        //  BEGIN STYLE PROPERTIES 
        /////////////////////////////////////////////////////////////////////////
 
        // Style properties are not applicable in the stylesheet control

        /// 
        [ 
            Bindable(false),
            Browsable(false), 
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), 
            EditorBrowsable(EditorBrowsableState.Never),
        ] 
        public override String StyleReference
        {
            get
            { 
                if (MobilePage.DesignMode)
                { 
                    return String.Empty; 
                }
                throw new Exception( 
                    SR.GetString(SR.StyleSheet_PropertyNotAccessible, "StyleReference"));
            }
            set
            { 
                throw new Exception(
                    SR.GetString(SR.StyleSheet_PropertyNotSettable, "StyleReference")); 
            } 
        }
 
        /// 
        [
            Bindable(false),
            Browsable(false), 
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
            EditorBrowsable(EditorBrowsableState.Never), 
        ] 
        public override FontInfo Font
        { 
            get
            {
                // The checking if MobilePage null is necessary because Font is a
                // expandable property, the property browser still check the inner 
                // Font properties although it is not browsable. When designer is
                // first loaded, MobilePage is still unassigned. 
                if (MobilePage == null || MobilePage.DesignMode) 
                {
                    return null; 
                }
                throw new Exception(
                    SR.GetString(SR.StyleSheet_PropertyNotAccessible, "Font"));
            } 
        }
 
        ///  
        [
            Bindable(false), 
            Browsable(false),
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
            EditorBrowsable(EditorBrowsableState.Never),
        ] 
        public override Alignment Alignment
        { 
            get 
            {
                if (MobilePage.DesignMode) 
                {
                    return Alignment.NotSet;
                }
                throw new Exception( 
                    SR.GetString(SR.StyleSheet_PropertyNotAccessible, "Alignment"));
            } 
            set 
            {
                throw new Exception( 
                    SR.GetString(SR.StyleSheet_PropertyNotSettable, "Alignment"));
            }
        }
 
        /// 
        [ 
            Bindable(false), 
            Browsable(false),
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), 
            EditorBrowsable(EditorBrowsableState.Never),
        ]
        public override Wrapping Wrapping
        { 
            get
            { 
                if (MobilePage.DesignMode) 
                {
                    return Wrapping.NotSet; 
                }
                throw new Exception(
                    SR.GetString(SR.StyleSheet_PropertyNotAccessible, "Wrapping"));
            } 
            set
            { 
                throw new Exception( 
                    SR.GetString(SR.StyleSheet_PropertyNotSettable, "Wrapping"));
            } 
        }

        /// 
        [ 
            Bindable(false),
            Browsable(false), 
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), 
            EditorBrowsable(EditorBrowsableState.Never),
        ] 
        public override Color ForeColor
        {
            get
            { 
                if (MobilePage.DesignMode)
                { 
                    return Color.Empty; 
                }
                throw new Exception( 
                    SR.GetString(SR.StyleSheet_PropertyNotAccessible, "ForeColor"));
            }
            set
            { 
                throw new Exception(
                    SR.GetString(SR.StyleSheet_PropertyNotSettable, "ForeColor")); 
            } 
        }
 
        /// 
        [
            Bindable(false),
            Browsable(false), 
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
            EditorBrowsable(EditorBrowsableState.Never), 
        ] 
        public override Color BackColor
        { 
            get
            {
                if (MobilePage.DesignMode)
                { 
                    return Color.Empty;
                } 
                throw new Exception( 
                    SR.GetString(SR.StyleSheet_PropertyNotAccessible, "BackColor"));
            } 
            set
            {
                throw new Exception(
                    SR.GetString(SR.StyleSheet_PropertyNotSettable, "BackColor")); 
            }
        } 
 
        /// 
        [ 
            Bindable(false),
            Browsable(false),
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
            EditorBrowsable(EditorBrowsableState.Never), 
        ]
        public override bool BreakAfter 
        { 
            get
            { 
                if (MobilePage.DesignMode)
                {
                    return true;
                } 
                throw new Exception(
                    SR.GetString(SR.StyleSheet_PropertyNotAccessible, "BreakAfter")); 
            } 
            set
            { 
                throw new Exception(
                    SR.GetString(SR.StyleSheet_PropertyNotSettable, "BreakAfter"));
            }
        } 

        internal ICollection DuplicateStyles 
        { 
            get
            { 
                return _duplicateStyles;
            }
        }
 
        /////////////////////////////////////////////////////////////////////////
        //  END STYLE PROPERTIES 
        ///////////////////////////////////////////////////////////////////////// 

        /* 
         * Private style collection class, that allows by-name or by-index access to
         * a set of styles.
         */
 
        private class StyleCollection : NameObjectCollectionBase
        { 
            public Style this[String name] 
            {
                get 
                {
                    return (Style)BaseGet(name);
                }
 
                set
                { 
                    BaseSet(name, value); 
                }
            } 

            public Style GetAt(int i)
            {
                return (Style)BaseGet(i); 
            }
 
            public bool Remove(String name) 
            {
                if (this[name] == null) 
                {
                    return false;
                }
                else 
                {
                    this[name].SetControl(null); 
                    BaseRemove(name); 
                    return true;
                } 
            }

            public void Clear()
            { 
                BaseClear();
            } 
 

 
        }
    }

    /* 
     * StyleSheet Control builder.
     * 
     * 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 StyleSheetControlBuilder : MobileControlBuilder 
    {
        ///  
        public override Type GetChildControlType(String name, IDictionary attributes) 
        {
            String lowerCaseName = name.ToLower(CultureInfo.InvariantCulture); 

            if (lowerCaseName.EndsWith(":style", StringComparison.Ordinal))
            {
                return typeof(Style); 
            }
 
            // Any extender to Style *MUST* be added in here to be recognized in 
            // a StyleSheet.
            // NOTE: Currently no way for third party extenders to add their 
            // own styles.  They'll need to specify complete name and
            // runat=server.

            Type type = null; 
            switch (lowerCaseName)
            { 
              case "style": 
                if(InDesigner)
                { 
                    // Indicate to the designer that it needs to add a prefix.
                    System.Web.UI.Design.MobileControls.StyleSheetDesigner.SetRequiresDesignTimeChanges();
                }
                type = typeof(Style); 
                break;
 
              case "pagerstyle": 
                type = typeof(PagerStyle);
                break; 

              default:
                type = base.GetChildControlType(name, attributes);
                break; 
            }
 
            return type; 
        }
    } 

}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

using System; 
using System.Collections; 
using System.Collections.Specialized;
using System.ComponentModel; 
using System.ComponentModel.Design;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Design; 
using System.Globalization;
using System.Web; 
using System.Web.Mobile; 
using System.Web.UI;
using System.Web.UI.Design.WebControls; 
using System.Web.UI.HtmlControls;
using System.Web.Util;
using System.Reflection;
using System.Security.Permissions; 

namespace System.Web.UI.MobileControls 
{ 

    /* 
     * Mobile StyleSheet class.
     */
    /// 
    [ 
        ControlBuilderAttribute(typeof(StyleSheetControlBuilder)),
        Designer(typeof(System.Web.UI.Design.MobileControls.StyleSheetDesigner)), 
        Editor(typeof(System.Web.UI.Design.MobileControls.StyleSheetComponentEditor), 
            typeof(ComponentEditor)),
        ToolboxData("<{0}:StyleSheet runat=\"server\">"), 
        ToolboxItem(typeof(System.Web.UI.Design.WebControlToolboxItem))
    ]
    [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 StyleSheet : MobileControl 
    { 
        private readonly static StyleSheet _default = new StyleSheet();
        private StyleCollection _styles = new StyleCollection(); 
        private StyleSheet _externalStyleSheet;
        private ArrayList _duplicateStyles = new ArrayList();
        private StyleSheet _referrer;
        private String _resolvedPath; 
        private bool _saveAll = false;
 
        static StyleSheet() 
        {
            //  initialize default stylesheet 
            {
                Style title = new Style();
                title.Bold = BooleanOption.True;
                title.Font.Size = FontSize.Large; 
                title.Name = "title";
                _default.AddParsedSubObject(title); 
 
                Style error = new Style();
                error.ForeColor = Color.Red; 
                error.Name = Constants.ErrorStyle;
                _default.AddParsedSubObject(error);

                Style subCommand = new Style(); 
                subCommand.Font.Size = FontSize.Small;
                subCommand.Name = "subcommand"; 
                subCommand.Alignment = Alignment.Center; 
                _default.AddParsedSubObject(subCommand);
            } 
        }

        /// 
        public static StyleSheet Default 
        {
            get 
            { 
                return _default;
            } 
        }

        /// 
        protected override void AddParsedSubObject(Object o) 
        {
            if (o is Style) 
            { 
                Style style = (Style)o;
                style.SetControl(this); 
                String name = style.Name;
                if (String.IsNullOrEmpty(name)) {
                    throw new Exception(
                        SR.GetString(SR.StyleSheet_MustContainID)); 
                }
                // Remember any duplicate styles we encounter.  Validate() 
                // will throw if this list is not empty. 
                String lowerName = name.ToLower(CultureInfo.InvariantCulture);
                if (_styles[lowerName] != null) 
                {
                    _duplicateStyles.Add(style);
                }
                else 
                {
                    // Do not overwrite hash table with duplicate style or we 
                    // will loose the overwritten style in the designer. 
                    this[name] = style;
                } 
            }
            else
            {
                base.AddParsedSubObject(o); 
            }
        } 
 
        /// 
        public Style this[String name] 
        {
            get
            {
                Style style = (Style)_styles[name.ToLower(CultureInfo.InvariantCulture)]; 
                if (style == null && ExternalStyleSheet != null)
                { 
                    style = _externalStyleSheet[name]; 
                }
                return style; 
            }
            set
            {
                if (String.IsNullOrEmpty(name)) { 
                    throw new ArgumentException(SR.GetString(SR.Style_EmptyName));
                } 
 
                if (!String.Equals(name, value.Name, StringComparison.OrdinalIgnoreCase)) {
                    // If the Style doesn't yet have a name, assign it the one that 
                    // it's being set as in the Stylesheet.
                    Debug.Assert(value.Name != null);

                    if (value.Name.Length == 0) { 
                        value.Name = name;
                    } 
                    else { 
                        throw new ArgumentException(
                            SR.GetString(SR.StyleSheet_InvalidStyleName, 
                                         value.Name, name));
                    }
                }
 
                if (value.Control == null)
                { 
                    // Necessary for programmatically generated styles...  need 
                    // to have their stylesheet set when inserted.
                    value.SetControl(this); 
                }
                else if (value.Control != this && MobilePage != null && !MobilePage.DesignMode)
                {
                    // In the rare event that someone tries to share a 
                    // style between stylesheets.  (Don't do this check in
                    // design mode, as they do share styles, although in a very 
                    // careful way that doesn't cause problems.) 
                    throw new Exception(
                        SR.GetString(SR.StyleSheet_StyleAlreadyOwned, 
                                     value.Name,
                                     value.Control.ID));
                }
 
                String lowerName = name.ToLower(CultureInfo.InvariantCulture);
 
                if (_styles[lowerName] != null) 
                {
                    _saveAll = true; 
                }
                else if (IsTrackingViewState)
                {
                    value.SetDirty(); 
                    ((IStateManager)value).TrackViewState();
                } 
 
                _styles[lowerName] = value;
            } 
        }

        /// 
        [ 
            Browsable(false),
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), 
        ] 
        public ICollection Styles
        { 
            get
            {
                return (ICollection)_styles;
            } 
        }
 
        ///  
        public void Remove(String name)
        { 
            _saveAll = true;
            if (!_styles.Remove (name))
            {
                throw new ArgumentException(SR.GetString(SR.Style_StyleNotFound, name)); 
            }
        } 
 
        /// 
        [ 
            Bindable(true),
            DefaultValue(""),
            Editor(typeof(System.Web.UI.Design.MobileControls.StyleSheetRefUrlEditor), typeof(UITypeEditor)),
            MobileCategory(SR.Category_Behavior), 
            MobileSysDescription(SR.StyleSheet_ReferencePath)
        ] 
        public String ReferencePath 
        {
            get 
            {
                String s = (String)ViewState["ReferencePath"];
                return s != null ? s : String.Empty;
            } 
            set
            { 
                ViewState["ReferencePath"] = value; 
                _externalStyleSheet = null;
            } 
        }

        private StyleSheet ExternalStyleSheet
        { 
            get
            { 
                // If page is null then this is the default stylesheet 
                if (Page == null || MobilePage.DesignMode)
                { 
                    return null;
                }

                if (_externalStyleSheet == null && ReferencePath.Length > 0) 
                {
                    // Should load relative to parent template control (which 
                    // may be a page or a user control). 

                    TemplateControl parent = (TemplateControl)Parent; 

                    // First check if there are any circular references.

                    String resolvedPath = UrlPath.Combine(parent.TemplateSourceDirectory, 
                                                          ReferencePath);
                    for (StyleSheet ss = Referrer; ss != null; ss = ss.Referrer) 
                    { 
                        if (ss.ResolvedPath != null &&
                                String.Compare(ss.ResolvedPath, resolvedPath, StringComparison.OrdinalIgnoreCase) == 0) 
                        {
                            throw new Exception(SR.GetString(SR.StyleSheet_LoopReference,
                                                             ResolvedPath));
                        } 
                    }
 
                    Control control = parent.LoadControl(ReferencePath); 

                    // By adding it as a child of this control, the user 
                    // control returned above is instantiated and its
                    // children are accessible below.
                    Controls.Add(control);
 
                    foreach (Control child in control.Controls)
                    { 
                        _externalStyleSheet = child as StyleSheet; 
                        if (_externalStyleSheet != null)
                        { 
                            break;
                        }
                    }
                    if (_externalStyleSheet == null) 
                    {
                        throw new Exception( 
                            SR.GetString(SR.StyleSheet_NoStyleSheetInExternalFile)); 
                    }
 
                    _externalStyleSheet.ResolvedPath = resolvedPath;
                    _externalStyleSheet.Referrer = this;
                }
                return _externalStyleSheet; 
            }
        } 
 
        internal override void ApplyDeviceSpecifics()
        { 
            // Apply our own device specifics first

            base.ApplyDeviceSpecifics();
 
            // Iterate over the Styles, invoking ApplyProperties on each Style's
            // DeviceSpecific. 
 
            foreach (String key in _styles.Keys)
            { 
                Style style = _styles[key];
                if (style.DeviceSpecific != null)
                {
                    style.DeviceSpecific.ApplyProperties(); 
                }
            } 
        } 

        private StyleSheet Referrer 
        {
            get
            {
                return _referrer; 
            }
 
            set 
            {
                _referrer = value; 
            }
        }

        private String ResolvedPath 
        {
            get 
            { 
                return _resolvedPath;
            } 

            set
            {
                _resolvedPath = value; 
            }
        } 
 
        /// 
        protected override void TrackViewState() 
        {
            for (int i = 0; i < _styles.Count; i++)
            {
                ((IStateManager)_styles.GetAt(i)).TrackViewState(); 
            }
            base.TrackViewState(); 
        } 

        internal override bool RequiresForm 
        {
            get
            {
                return false; 
            }
        } 
 
        /// 
        protected override Object SaveViewState() 
        {
            Object baseState = base.SaveViewState();

            int styleCount = _styles.Count; 
            Object[] stylesState = new Object[styleCount];
 
            if (_saveAll) 
            {
                for (int i = 0; i < styleCount; i++) 
                {
                    Style style = (Style)_styles.GetAt(i);
                    style.SetDirty();
                    stylesState[i] = ((IStateManager)style).SaveViewState(); 
                }
            } 
            else 
            {
                bool anySaved = false; 
                for (int i = 0; i < styleCount; i++)
                {
                    Style style = (Style)_styles.GetAt(i);
                    stylesState[i] = ((IStateManager)style).SaveViewState(); 
                    if (stylesState[i] != null)
                    { 
                        anySaved = true; 
                    }
                } 

                if (!anySaved)
                {
                    stylesState = null; 
                }
            } 
 
            if (stylesState != null || baseState != null)
            { 
                return new Object[] { baseState, _saveAll, stylesState };
            }
            else
            { 
                return null;
            } 
        } 

        ///  
        protected override void LoadViewState(Object savedState)
        {
            if (savedState != null)
            { 
                Object[] o = (Object[])savedState;
                base.LoadViewState(o[0]); 
 
                if (o[2] != null)
                { 
                    bool savedAll = (bool)o[1];
                    Object[] stylesState = (Object[])o[2];

                    if (savedAll) 
                    {
                        _saveAll = true; 
                        _styles.Clear(); 
                    }
 
                    int stylesCount = _styles.Count;
                    for (int i = 0; i < stylesState.Length; i++)
                    {
                        if (i >= stylesCount) 
                        {
                            Style style = new Style(); 
                            IStateManager styleStateMgr = (IStateManager)style; 

                            styleStateMgr.LoadViewState(stylesState[i]); 
                            styleStateMgr.TrackViewState();
                            style.SetControl(this);
                            _styles[style.Name.ToLower(CultureInfo.InvariantCulture)] = style;
                        } 
                        else if (stylesState != null)
                        { 
                            ((IStateManager)_styles.GetAt(i)).LoadViewState(stylesState[i]); 
                        }
                    } 
                }
            }
        }
 
        /////////////////////////////////////////////////////////////////////////
        //  BEGIN DESIGNER SUPPORT 
        ///////////////////////////////////////////////////////////////////////// 

        ///  
        public void Clear()
        {
            _styles.Clear();
        } 

        // Do not expose the Visible property in the Designer 
        ///  
        [
            Bindable(false), 
            Browsable(false),
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
        ]
        public override bool Visible 
        {
            get 
            { 
                //
 
                return base.Visible;
            }
            set
            { 
                base.Visible = value;
            } 
        } 

        // Do not expose the EnableViewState property in the Designer 
        /// 
        [
            Bindable(false),
            Browsable(false), 
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
        ] 
        public override bool EnableViewState 
        {
            get 
            {
                return base.EnableViewState;
            }
            set 
            {
                base.EnableViewState = value; 
            } 
        }
 

        /////////////////////////////////////////////////////////////////////////
        //  END DESIGNER SUPPORT
        ///////////////////////////////////////////////////////////////////////// 

        ///////////////////////////////////////////////////////////////////////// 
        //  BEGIN STYLE PROPERTIES 
        /////////////////////////////////////////////////////////////////////////
 
        // Style properties are not applicable in the stylesheet control

        /// 
        [ 
            Bindable(false),
            Browsable(false), 
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), 
            EditorBrowsable(EditorBrowsableState.Never),
        ] 
        public override String StyleReference
        {
            get
            { 
                if (MobilePage.DesignMode)
                { 
                    return String.Empty; 
                }
                throw new Exception( 
                    SR.GetString(SR.StyleSheet_PropertyNotAccessible, "StyleReference"));
            }
            set
            { 
                throw new Exception(
                    SR.GetString(SR.StyleSheet_PropertyNotSettable, "StyleReference")); 
            } 
        }
 
        /// 
        [
            Bindable(false),
            Browsable(false), 
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
            EditorBrowsable(EditorBrowsableState.Never), 
        ] 
        public override FontInfo Font
        { 
            get
            {
                // The checking if MobilePage null is necessary because Font is a
                // expandable property, the property browser still check the inner 
                // Font properties although it is not browsable. When designer is
                // first loaded, MobilePage is still unassigned. 
                if (MobilePage == null || MobilePage.DesignMode) 
                {
                    return null; 
                }
                throw new Exception(
                    SR.GetString(SR.StyleSheet_PropertyNotAccessible, "Font"));
            } 
        }
 
        ///  
        [
            Bindable(false), 
            Browsable(false),
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
            EditorBrowsable(EditorBrowsableState.Never),
        ] 
        public override Alignment Alignment
        { 
            get 
            {
                if (MobilePage.DesignMode) 
                {
                    return Alignment.NotSet;
                }
                throw new Exception( 
                    SR.GetString(SR.StyleSheet_PropertyNotAccessible, "Alignment"));
            } 
            set 
            {
                throw new Exception( 
                    SR.GetString(SR.StyleSheet_PropertyNotSettable, "Alignment"));
            }
        }
 
        /// 
        [ 
            Bindable(false), 
            Browsable(false),
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), 
            EditorBrowsable(EditorBrowsableState.Never),
        ]
        public override Wrapping Wrapping
        { 
            get
            { 
                if (MobilePage.DesignMode) 
                {
                    return Wrapping.NotSet; 
                }
                throw new Exception(
                    SR.GetString(SR.StyleSheet_PropertyNotAccessible, "Wrapping"));
            } 
            set
            { 
                throw new Exception( 
                    SR.GetString(SR.StyleSheet_PropertyNotSettable, "Wrapping"));
            } 
        }

        /// 
        [ 
            Bindable(false),
            Browsable(false), 
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), 
            EditorBrowsable(EditorBrowsableState.Never),
        ] 
        public override Color ForeColor
        {
            get
            { 
                if (MobilePage.DesignMode)
                { 
                    return Color.Empty; 
                }
                throw new Exception( 
                    SR.GetString(SR.StyleSheet_PropertyNotAccessible, "ForeColor"));
            }
            set
            { 
                throw new Exception(
                    SR.GetString(SR.StyleSheet_PropertyNotSettable, "ForeColor")); 
            } 
        }
 
        /// 
        [
            Bindable(false),
            Browsable(false), 
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
            EditorBrowsable(EditorBrowsableState.Never), 
        ] 
        public override Color BackColor
        { 
            get
            {
                if (MobilePage.DesignMode)
                { 
                    return Color.Empty;
                } 
                throw new Exception( 
                    SR.GetString(SR.StyleSheet_PropertyNotAccessible, "BackColor"));
            } 
            set
            {
                throw new Exception(
                    SR.GetString(SR.StyleSheet_PropertyNotSettable, "BackColor")); 
            }
        } 
 
        /// 
        [ 
            Bindable(false),
            Browsable(false),
            DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
            EditorBrowsable(EditorBrowsableState.Never), 
        ]
        public override bool BreakAfter 
        { 
            get
            { 
                if (MobilePage.DesignMode)
                {
                    return true;
                } 
                throw new Exception(
                    SR.GetString(SR.StyleSheet_PropertyNotAccessible, "BreakAfter")); 
            } 
            set
            { 
                throw new Exception(
                    SR.GetString(SR.StyleSheet_PropertyNotSettable, "BreakAfter"));
            }
        } 

        internal ICollection DuplicateStyles 
        { 
            get
            { 
                return _duplicateStyles;
            }
        }
 
        /////////////////////////////////////////////////////////////////////////
        //  END STYLE PROPERTIES 
        ///////////////////////////////////////////////////////////////////////// 

        /* 
         * Private style collection class, that allows by-name or by-index access to
         * a set of styles.
         */
 
        private class StyleCollection : NameObjectCollectionBase
        { 
            public Style this[String name] 
            {
                get 
                {
                    return (Style)BaseGet(name);
                }
 
                set
                { 
                    BaseSet(name, value); 
                }
            } 

            public Style GetAt(int i)
            {
                return (Style)BaseGet(i); 
            }
 
            public bool Remove(String name) 
            {
                if (this[name] == null) 
                {
                    return false;
                }
                else 
                {
                    this[name].SetControl(null); 
                    BaseRemove(name); 
                    return true;
                } 
            }

            public void Clear()
            { 
                BaseClear();
            } 
 

 
        }
    }

    /* 
     * StyleSheet Control builder.
     * 
     * 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 StyleSheetControlBuilder : MobileControlBuilder 
    {
        ///  
        public override Type GetChildControlType(String name, IDictionary attributes) 
        {
            String lowerCaseName = name.ToLower(CultureInfo.InvariantCulture); 

            if (lowerCaseName.EndsWith(":style", StringComparison.Ordinal))
            {
                return typeof(Style); 
            }
 
            // Any extender to Style *MUST* be added in here to be recognized in 
            // a StyleSheet.
            // NOTE: Currently no way for third party extenders to add their 
            // own styles.  They'll need to specify complete name and
            // runat=server.

            Type type = null; 
            switch (lowerCaseName)
            { 
              case "style": 
                if(InDesigner)
                { 
                    // Indicate to the designer that it needs to add a prefix.
                    System.Web.UI.Design.MobileControls.StyleSheetDesigner.SetRequiresDesignTimeChanges();
                }
                type = typeof(Style); 
                break;
 
              case "pagerstyle": 
                type = typeof(PagerStyle);
                break; 

              default:
                type = base.GetChildControlType(name, attributes);
                break; 
            }
 
            return type; 
        }
    } 

}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
                        

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