SubMenuStyle.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / UI / WebControls / SubMenuStyle.cs / 1305376 / SubMenuStyle.cs

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

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

    ///  
    ///    Specifies the style of a SubMenu.
    ///  
    public class SubMenuStyle : Style, ICustomTypeDescriptor { 
        private const int PROP_VPADDING = 0x00010000;
        private const int PROP_HPADDING = 0x00020000; 

        public SubMenuStyle() : base() {
        }
 
        public SubMenuStyle(StateBag bag) : base(bag) {
        } 
 
        /// 
        /// Gets and sets the horizontal padding around the node text 
        /// 
        [
        DefaultValue(typeof(Unit), ""),
        WebCategory("Layout"), 
        NotifyParentProperty(true),
        WebSysDescription(SR.SubMenuStyle_HorizontalPadding), 
        ] 
        public Unit HorizontalPadding {
            get { 
                if (IsSet(PROP_HPADDING)) {
                    return (Unit)(ViewState["HorizontalPadding"]);
                }
                return Unit.Empty; 
            }
            set { 
                if ((value.Type == UnitType.Percentage) || (value.Value < 0)) { 
                    throw new ArgumentOutOfRangeException("value");
                } 
                ViewState["HorizontalPadding"] = value;
                SetBit(PROP_HPADDING);
            }
        } 

 
        ///  
        /// Gets and sets the vertical padding around the node text
        ///  
        [
        DefaultValue(typeof(Unit), ""),
        WebCategory("Layout"),
        NotifyParentProperty(true), 
        WebSysDescription(SR.SubMenuStyle_VerticalPadding),
        ] 
        public Unit VerticalPadding { 
            get {
                if (IsSet(PROP_VPADDING)) { 
                    return (Unit)(ViewState["VerticalPadding"]);
                }
                return Unit.Empty;
            } 
            set {
                if ((value.Type == UnitType.Percentage) || (value.Value < 0)) { 
                    throw new ArgumentOutOfRangeException("value"); 
                }
                ViewState["VerticalPadding"] = value; 
                SetBit(PROP_VPADDING);
            }
        }
 

        ///  
        ///    Copies non-blank elements from the specified style, overwriting existing 
        ///    style elements if necessary.
        ///  
        public override void CopyFrom(Style s) {
            if (s != null) {
                base.CopyFrom(s);
 
                SubMenuStyle sms = s as SubMenuStyle;
                if (sms != null && !sms.IsEmpty) { 
                    // Only copy the paddings if they aren't in the source Style's registered CSS class 
                    if (s.RegisteredCssClass.Length != 0) {
                        if (sms.IsSet(PROP_VPADDING)) { 
                            ViewState.Remove("VerticalPadding");
                            ClearBit(PROP_VPADDING);
                        }
 
                        if (sms.IsSet(PROP_HPADDING)) {
                            ViewState.Remove("HorizontalPadding"); 
                            ClearBit(PROP_HPADDING); 
                        }
                    } 
                    else {
                        if (sms.IsSet(PROP_VPADDING)) {
                            this.VerticalPadding = sms.VerticalPadding;
                        } 

                        if (sms.IsSet(PROP_HPADDING)) { 
                            this.HorizontalPadding = sms.HorizontalPadding; 
                        }
                    } 
                }
            }
        }
 

        protected override void FillStyleAttributes(CssStyleCollection attributes, IUrlResolutionService urlResolver) { 
            // The style will be rendered on container elements that does not contain text directly. 
            // It does not render font and forecolor.
            // Users should set font and forecolor on MenuItems styles. 
            // Copying the code from the base class, except for the part that deals with Font and ForeColor.
            StateBag viewState = ViewState;
            Color c;
 
            // BackColor
            if (base.IsSet(PROP_BACKCOLOR)) { 
                c = (Color)viewState["BackColor"]; 
                if (!c.IsEmpty) {
                    attributes.Add(HtmlTextWriterStyle.BackgroundColor, ColorTranslator.ToHtml(c)); 
                }
            }

            // BorderColor 
            if (base.IsSet(PROP_BORDERCOLOR)) {
                c = (Color)viewState["BorderColor"]; 
                if (!c.IsEmpty) { 
                    attributes.Add(HtmlTextWriterStyle.BorderColor, ColorTranslator.ToHtml(c));
                } 
            }

            BorderStyle bs = this.BorderStyle;
            Unit bu = this.BorderWidth; 
            if (!bu.IsEmpty) {
                attributes.Add(HtmlTextWriterStyle.BorderWidth, bu.ToString(CultureInfo.InvariantCulture)); 
                if (bs == BorderStyle.NotSet) { 
                    if (bu.Value != 0.0) {
                        attributes.Add(HtmlTextWriterStyle.BorderStyle, "solid"); 
                    }
                }
                else {
                    attributes.Add(HtmlTextWriterStyle.BorderStyle, borderStyles[(int)bs]); 
                }
            } 
            else { 
                if (bs != BorderStyle.NotSet) {
                    attributes.Add(HtmlTextWriterStyle.BorderStyle, borderStyles[(int)bs]); 
                }
            }

            Unit u; 

            // Height 
            if (base.IsSet(PROP_HEIGHT)) { 
                u = (Unit)viewState["Height"];
                if (!u.IsEmpty) { 
                    attributes.Add(HtmlTextWriterStyle.Height, u.ToString(CultureInfo.InvariantCulture));
                }
            }
 
            // Width
            if (base.IsSet(PROP_WIDTH)) { 
                u = (Unit)viewState["Width"]; 
                if (!u.IsEmpty) {
                    attributes.Add(HtmlTextWriterStyle.Width, u.ToString(CultureInfo.InvariantCulture)); 
                }
            }

            if (!HorizontalPadding.IsEmpty || !VerticalPadding.IsEmpty) { 
                attributes.Add(HtmlTextWriterStyle.Padding, string.Format(CultureInfo.InvariantCulture,
                    "{0} {1} {0} {1}", 
                    VerticalPadding.IsEmpty ? Unit.Pixel(0) : VerticalPadding, 
                    HorizontalPadding.IsEmpty ? Unit.Pixel(0) : HorizontalPadding));
            } 
        }


        ///  
        ///    Copies non-blank elements from the specified style, but will not overwrite
        ///    any existing style elements. 
        ///  
        public override void MergeWith(Style s) {
            if (s != null) { 
                if (IsEmpty) {
                    // Merging with an empty style is equivalent to copying,
                    // which is more efficient.
                    CopyFrom(s); 
                    return;
                } 
 
                base.MergeWith(s);
 
                SubMenuStyle sms = s as SubMenuStyle;
                // Since we're already copying the registered CSS class in base.MergeWith, we don't
                // need to any attributes that would be included in that class.
                if (sms != null && !sms.IsEmpty && s.RegisteredCssClass.Length == 0) { 
                    if (sms.IsSet(PROP_VPADDING) && !this.IsSet(PROP_VPADDING)) {
                        this.VerticalPadding = sms.VerticalPadding; 
                    } 

                    if (sms.IsSet(PROP_HPADDING) && !this.IsSet(PROP_HPADDING)) { 
                        this.HorizontalPadding = sms.HorizontalPadding;
                    }
                }
            } 
        }
 
 
        /// 
        ///    Clears out any defined style elements from the state bag. 
        /// 
        public override void Reset() {
            if (IsSet(PROP_VPADDING))
                ViewState.Remove("VerticalPadding"); 
            if (IsSet(PROP_HPADDING))
                ViewState.Remove("HorizontalPadding"); 
 
            base.Reset();
        } 


 		#region ICustomTypeDesciptor implementation
		System.ComponentModel.AttributeCollection ICustomTypeDescriptor.GetAttributes() { 
			return TypeDescriptor.GetAttributes(this, true);
		} 
 
 		string ICustomTypeDescriptor.GetClassName() {
			return TypeDescriptor.GetClassName(this, true); 
 		}

 		string ICustomTypeDescriptor.GetComponentName() {
			return TypeDescriptor.GetComponentName(this, true); 
 		}
 
		TypeConverter ICustomTypeDescriptor.GetConverter() { 
			return TypeDescriptor.GetConverter(this, true);
		} 

 		EventDescriptor ICustomTypeDescriptor.GetDefaultEvent() {
			return TypeDescriptor.GetDefaultEvent(this, true);
 		} 

 		PropertyDescriptor ICustomTypeDescriptor.GetDefaultProperty() { 
			return TypeDescriptor.GetDefaultProperty(this, true); 
 		}
 
		object ICustomTypeDescriptor.GetEditor(Type editorBaseType) {
			return TypeDescriptor.GetEditor(this, editorBaseType, true);
		}
 
 		EventDescriptorCollection ICustomTypeDescriptor.GetEvents() {
			return TypeDescriptor.GetEvents(this, true); 
 		} 

 		EventDescriptorCollection ICustomTypeDescriptor.GetEvents(Attribute[] attributes) { 
			return TypeDescriptor.GetEvents(this, attributes, true);
 		}

		PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties() { 
			return ((ICustomTypeDescriptor)this).GetProperties(null);
		} 
 
 		PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties(Attribute[] attributes) {
			PropertyDescriptorCollection oldProperties = TypeDescriptor.GetProperties(GetType(), attributes); 
 			PropertyDescriptor[] newProperties = new PropertyDescriptor[oldProperties.Count];

 			PropertyDescriptor fontProperty = oldProperties["Font"];
			PropertyDescriptor forecolorProperty = oldProperties["ForeColor"]; 

 			Attribute[] newAttributes = new Attribute[] { 
                new BrowsableAttribute(false), 
                new EditorBrowsableAttribute(EditorBrowsableState.Never),
                new ThemeableAttribute(false), 
            };

			for (int i = 0; i < oldProperties.Count; i++) {
				PropertyDescriptor property = oldProperties[i]; 
				if ((property == fontProperty) || (property == forecolorProperty)) {
 					newProperties[i] = TypeDescriptor.CreateProperty(GetType(), property, newAttributes); 
				} 
 				else {
 					newProperties[i] = property; 
				}
 			}

			return new PropertyDescriptorCollection(newProperties, true); 
		}
 
		object ICustomTypeDescriptor.GetPropertyOwner(PropertyDescriptor pd) { 
 			return this;
		} 
        #endregion //ICustomTypeDescriptor implementation

    }
} 

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

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