ToolStripOverflowButton.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 / WinForms / Managed / System / WinForms / ToolStripOverflowButton.cs / 1 / ToolStripOverflowButton.cs
                        

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

namespace System.Windows.Forms { 
    using System; 
    using System.Collections;
    using System.ComponentModel; 
    using System.Drawing;
    using System.Diagnostics;
    using System.Windows.Forms.Design;
 

    ///  
    ///  
    /// ToolStripOverflowButton
    ///  
    [ToolStripItemDesignerAvailability(ToolStripItemDesignerAvailability.None)]
    public class ToolStripOverflowButton : ToolStripDropDownButton {

       // we need to cache this away as the Parent property gets reset a lot. 
       private ToolStrip parentToolStrip;
 
        ///  
 	[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
        internal ToolStripOverflowButton(ToolStrip parentToolStrip) { 
            SupportsItemClick = false;
            this.parentToolStrip = parentToolStrip;
        }
 

        ///  
        protected internal override Padding DefaultMargin { 
            get {
                return Padding.Empty; 
            }
        }

        ///  
        public override bool HasDropDownItems {
            get { 
                return this.ParentInternal.OverflowItems.Count > 0; 
            }
        } 


        internal override bool OppositeDropDownAlign {
            get { return true; } 
        }
 
        internal ToolStrip ParentToolStrip { 
            get { return parentToolStrip; }
        } 
        [
        Browsable(false),
        EditorBrowsable(EditorBrowsableState.Never),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) 
        ]
        public new bool RightToLeftAutoMirrorImage { 
            get { 
                return base.RightToLeftAutoMirrorImage;
            } 
            set {
                base.RightToLeftAutoMirrorImage = value;
            }
        } 

        protected override AccessibleObject CreateAccessibilityInstance() { 
            return new ToolStripOverflowButtonAccessibleObject(this); 
        }
 

        /// 
        protected override ToolStripDropDown CreateDefaultDropDown() {
            // AutoGenerate a Winbar DropDown - set the property so we hook events 
             return new ToolStripOverflow(this);
        } 
 
        /// 
        public override Size GetPreferredSize(Size constrainingSize) { 
            Size preferredSize = constrainingSize;
            if (this.ParentInternal != null)  {
              if (this.ParentInternal.Orientation == Orientation.Horizontal) {
                preferredSize.Width = Math.Min(constrainingSize.Width, 16); 
              }
              else { 
                preferredSize.Height = Math.Min(constrainingSize.Height, 16); 
              }
            } 
            return preferredSize + this.Padding.Size;
        }

        // make sure the Overflow button extends from edge-edge. (Ignore Padding/Margin). 
        internal protected override void SetBounds(Rectangle bounds) {
            if (ParentInternal != null && ParentInternal.LayoutEngine is ToolStripSplitStackLayout) { 
 
                if (ParentInternal.Orientation == Orientation.Horizontal) {
                    bounds.Height = ParentInternal.Height; 
                    bounds.Y = 0;
                }
                else {
                    bounds.Width = ParentInternal.Width; 
                    bounds.X = 0;
                } 
            } 
            base.SetBounds(bounds);
        } 

        /// 
        protected override void OnPaint(PaintEventArgs e) {
            if (this.ParentInternal != null) { 
                ToolStripRenderer renderer = this.ParentInternal.Renderer;
                renderer.DrawOverflowButtonBackground(new ToolStripItemRenderEventArgs(e.Graphics, this)); 
            } 
        }
 
        internal class ToolStripOverflowButtonAccessibleObject : ToolStripDropDownItemAccessibleObject {
            private string stockName;

            public ToolStripOverflowButtonAccessibleObject(ToolStripOverflowButton owner) : base(owner){ 
            }
 
 
            public override string Name {
                get { 
                    string name = Owner.AccessibleName;
                    if (name != null) {
                        return name;
                    } 
                    if (string.IsNullOrEmpty(stockName)) {
                        stockName = SR.GetString(SR.ToolStripOptions); 
                    } 
                    return stockName;
                } 
                set {
                    base.Name  = value;
                }
            } 

        } 
 
    }
} 

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

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