InheritanceUI.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Designer / WinForms / System / WinForms / Design / InheritanceUI.cs / 1 / InheritanceUI.cs
                        

                        
                             
//------------------------------------------------------------------------------
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
//  
//-----------------------------------------------------------------------------
 
/* 
 */
namespace System.Windows.Forms.Design { 

    using System;
    using System.ComponentModel;
    using System.ComponentModel.Design; 
    using System.Design;
    using System.Drawing; 
    using System.Diagnostics; 
    using System.Windows.Forms;
 
    /// 
    ///     This class handles the user interface for inherited components.
    /// 
    internal class InheritanceUI { 
        private static Bitmap inheritanceGlyph;
        private static Rectangle inheritanceGlyphRect; 
 
        private ToolTip tooltip;
 
        /// 
        ///     The bitmap we use to show inheritance.
        /// 
        public Bitmap InheritanceGlyph { 
            get {
                if (inheritanceGlyph == null) { 
                    inheritanceGlyph = new Bitmap(typeof(InheritanceUI), "InheritedGlyph.bmp"); 
                    inheritanceGlyph.MakeTransparent();
                } 

                return inheritanceGlyph;
            }
        } 

        ///  
        ///     The rectangle surrounding the glyph. 
        /// 
        public Rectangle InheritanceGlyphRectangle { 
            get {
                if (inheritanceGlyphRect == Rectangle.Empty) {
                    Size size = InheritanceGlyph.Size;
                    inheritanceGlyphRect = new Rectangle(0, 0, size.Width, size.Height); 
                }
 
                return inheritanceGlyphRect; 
            }
        } 

        /// 
        ///     Adds an inherited control to our list.  This creates a tool tip for that
        ///     control. 
        /// 
        public void AddInheritedControl(Control c, InheritanceLevel level) { 
            if (tooltip == null) { 
                tooltip = new ToolTip();
                tooltip.ShowAlways = true; 
            }

            Debug.Assert(level != InheritanceLevel.NotInherited, "This should only be called for inherited components.");
 
            string text;
 
            if (level == InheritanceLevel.InheritedReadOnly) { 
                text = SR.GetString(SR.DesignerInheritedReadOnly);
            } 
            else {
                text = SR.GetString(SR.DesignerInherited);
            }
 
            tooltip.SetToolTip(c, text);
 
            // Also, set all of its non-sited children 
            foreach(Control child in c.Controls) {
                if (child.Site == null) { 
                    tooltip.SetToolTip(child, text);
                }
            }
        } 

        public void Dispose() { 
            if (tooltip != null) { 
                tooltip.Dispose();
            } 
        }

        /// 
        ///     Removes a previously added inherited control. 
        /// 
        public void RemoveInheritedControl(Control c) { 
            if (tooltip != null && tooltip.GetToolTip(c).Length > 0) { 
                tooltip.SetToolTip(c, null);
 
                // Also, set all of its non-sited children
                foreach(Control child in c.Controls) {
                    if (child.Site == null) {
                        tooltip.SetToolTip(child, null); 
                    }
                } 
            } 
        }
    } 
}


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

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