HyperLinkStyle.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / WebControls / HyperLinkStyle.cs / 1 / HyperLinkStyle.cs
                        

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

namespace System.Web.UI.WebControls { 
    using System.ComponentModel; 
    using System.Drawing;
    using System.Drawing.Design; 
    using System.Globalization;
    using System.Text;
    using System.Web.UI;
    using System.Web.Util; 

    // This class renders selectively attributes from the owner class, filtering out anything not font or forecolor 
    internal sealed class HyperLinkStyle : Style { 
        private bool _doNotRenderDefaults = false;
        private Style _owner; // This is a style because of the newed IsSet (we need the Style.IsSet, not the new one) 

        public HyperLinkStyle(Style owner) {
            _owner = owner;
        } 

        public bool DoNotRenderDefaults { 
            get { 
                return _doNotRenderDefaults;
            } 
            set {
                _doNotRenderDefaults = value;
            }
        } 

        public sealed override bool IsEmpty { 
            get { 
                return  (RegisteredCssClass.Length == 0) &&
                    !(_owner.IsSet(PROP_CSSCLASS) || 
                    _owner.IsSet(PROP_FORECOLOR) ||
                    _owner.IsSet(PROP_FONT_NAMES) ||
                    _owner.IsSet(PROP_FONT_SIZE) ||
                    _owner.IsSet(PROP_FONT_BOLD) || 
                    _owner.IsSet(PROP_FONT_ITALIC) ||
                    _owner.IsSet(PROP_FONT_UNDERLINE) || 
                    _owner.IsSet(PROP_FONT_OVERLINE) || 
                    _owner.IsSet(PROP_FONT_STRIKEOUT));
            } 
        }

        public sealed override void AddAttributesToRender(HtmlTextWriter writer, WebControl owner) {
            string cssClass = String.Empty; 
            bool renderInlineStyle = true;
 
            if (_owner.IsSet(PROP_CSSCLASS)) { 
                cssClass = _owner.CssClass;
            } 
            if (RegisteredCssClass.Length != 0) {
                renderInlineStyle = false;
                if (cssClass.Length != 0) {
                    cssClass = cssClass + " " + RegisteredCssClass; 
                }
                else { 
                    cssClass = RegisteredCssClass; 
                }
            } 

            if (cssClass.Length > 0) {
                writer.AddAttribute(HtmlTextWriterAttribute.Class, cssClass);
            } 

            if (renderInlineStyle) { 
                CssStyleCollection styleAttributes = GetStyleAttributes(owner); 
                styleAttributes.Render(writer);
            } 
        }

        protected override sealed void FillStyleAttributes(CssStyleCollection attributes, IUrlResolutionService urlResolver) {
            Debug.Assert(_owner != null); 

            StateBag viewState = ViewState; 
 
            Color c;
 
            // ForeColor
            if (_owner.IsSet(PROP_FORECOLOR)) {
                c = _owner.ForeColor;
                if (!c.IsEmpty) { 
                    attributes.Add(HtmlTextWriterStyle.Color, ColorTranslator.ToHtml(c));
                } 
            } 
            // Not defaulting to black anymore for not entirely satisfying but reasonable reasons (VSWhidbey 356729)
 
            // need to call the property get in case we have font properties from view state and have not
            // created the font object
            FontInfo font = _owner.Font;
 
            // Font.Names
            string[] names = font.Names; 
            if (names.Length > 0) { 
                attributes.Add(HtmlTextWriterStyle.FontFamily, String.Join(",", names));
            } 

            // Font.Size
            FontUnit fu = font.Size;
            if (fu.IsEmpty == false) { 
                attributes.Add(HtmlTextWriterStyle.FontSize, fu.ToString(CultureInfo.InvariantCulture));
            } 
 
            // Font.Bold
            if (_owner.IsSet(PROP_FONT_BOLD)) { 
                if (font.Bold) {
                    attributes.Add(HtmlTextWriterStyle.FontWeight, "bold");
                }
                else { 
                    attributes.Add(HtmlTextWriterStyle.FontWeight, "normal");
                } 
            } 

            // Font.Italic 
            if (_owner.IsSet(PROP_FONT_ITALIC)) {
                if (font.Italic == true) {
                    attributes.Add(HtmlTextWriterStyle.FontStyle, "italic");
                } 
                else {
                    attributes.Add(HtmlTextWriterStyle.FontStyle, "normal"); 
                } 
            }
 
            string textDecoration = String.Empty;
            if (font.Underline) {
                textDecoration = "underline";
            } 
            if (font.Overline) {
                textDecoration += " overline"; 
            } 
            if (font.Strikeout) {
                textDecoration += " line-through"; 
            }
            if (textDecoration.Length > 0) {
                attributes.Add(HtmlTextWriterStyle.TextDecoration, textDecoration);
            } 
            else {
                if (!DoNotRenderDefaults) { 
                    attributes.Add(HtmlTextWriterStyle.TextDecoration, "none"); 
                }
            } 
            // Removing the border with an inline style if the class name was set
            if (_owner.IsSet(PROP_CSSCLASS)) {
                attributes.Add(HtmlTextWriterStyle.BorderStyle, "none");
            } 
        }
    } 
}

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