ToolStripContainer.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 / WinForms / Managed / System / WinForms / ToolStripContainer.cs / 1305376 / ToolStripContainer.cs

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

/// this is the UBER container for ToolStripPanels. 
namespace System.Windows.Forms { 

    using Microsoft.Win32; 
    using System;
    using System.ComponentModel;
    using System.Diagnostics;
    using System.Drawing; 
    using System.Runtime.InteropServices;
    using System.Windows.Forms; 
    using System.Collections; 
    using System.Globalization;
    using System.Windows.Forms.Layout; 

    [ComVisible(true)]
    [ClassInterface(ClassInterfaceType.AutoDispatch)]
    [Designer("System.Windows.Forms.Design.ToolStripContainerDesigner, " + AssemblyRef.SystemDesign)] 
    [SRDescription(SR.ToolStripContainerDesc)]
    public class ToolStripContainer : ContainerControl { 
 
        private ToolStripPanel topPanel;
        private ToolStripPanel bottomPanel; 
        private ToolStripPanel leftPanel;
        private ToolStripPanel rightPanel;
        private ToolStripContentPanel contentPanel;
 

        public ToolStripContainer() { 
 
            SetStyle(ControlStyles.ResizeRedraw | ControlStyles.SupportsTransparentBackColor, true);
 
            SuspendLayout();
            try {
                // undone - smart demand creation
                topPanel = new ToolStripPanel(this); 
                bottomPanel = new ToolStripPanel(this);
                leftPanel = new ToolStripPanel(this); 
                rightPanel = new ToolStripPanel(this); 
                contentPanel = new ToolStripContentPanel();
                contentPanel.Dock = DockStyle.Fill; 
                topPanel.Dock = DockStyle.Top;
                bottomPanel.Dock = DockStyle.Bottom;
                rightPanel.Dock = DockStyle.Right;
                leftPanel.Dock = DockStyle.Left; 

                ToolStripContainerTypedControlCollection controlCollection = this.Controls as ToolStripContainerTypedControlCollection; 
                if (controlCollection != null) { 
                    controlCollection.AddInternal(contentPanel);
                    controlCollection.AddInternal(leftPanel); 
                    controlCollection.AddInternal(rightPanel);
                    controlCollection.AddInternal(topPanel);
                    controlCollection.AddInternal(bottomPanel);
                } 
                // else consider throw new exception
 
            } 
            finally {
                ResumeLayout(true); 
            }
        }

 
        [
        Browsable(false), 
        EditorBrowsable(EditorBrowsableState.Never), 
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
        ] 
        public override bool AutoScroll {
            get { return base.AutoScroll; }
            set { base.AutoScroll = value; }
        } 

        [ 
        Browsable(false), 
        EditorBrowsable(EditorBrowsableState.Never),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) 
        ]
        public new Size AutoScrollMargin {
            get { return base.AutoScrollMargin; }
            set { base.AutoScrollMargin = value; } 
        }
 
        [ 
        Browsable(false),
        EditorBrowsable(EditorBrowsableState.Never), 
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
        ]
        public new Size AutoScrollMinSize {
            get { return base.AutoScrollMinSize; } 
            set { base.AutoScrollMinSize = value; }
        } 
        [ 
        Browsable(false),
        EditorBrowsable(EditorBrowsableState.Never), 
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
        ]
        public new Color BackColor {
            get { return base.BackColor; } 
            set { base.BackColor = value; }
        } 
 
        [
        Browsable(false), 
        EditorBrowsable(EditorBrowsableState.Never),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
        ]
        public new event EventHandler BackColorChanged { 
            add {
                base.BackColorChanged += value; 
            } 
            remove {
                base.BackColorChanged -= value; 
            }
        }

        [ 
        Browsable(false),
        EditorBrowsable(EditorBrowsableState.Never), 
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) 
        ]
        public new Image BackgroundImage { 
            get { return base.BackgroundImage; }
            set { base.BackgroundImage = value; }
        }
 

        [ 
        Browsable(false), 
        EditorBrowsable(EditorBrowsableState.Never),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) 
        ]
        public new event EventHandler BackgroundImageChanged {
            add {
                base.BackgroundImageChanged += value; 
            }
            remove { 
                base.BackgroundImageChanged -= value; 
            }
        } 

        [
        Browsable(false),
        EditorBrowsable(EditorBrowsableState.Never), 
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
        ] 
        public override ImageLayout BackgroundImageLayout { 
            get { return base.BackgroundImageLayout; }
            set { base.BackgroundImageLayout = value; } 
        }

        [
        Browsable(false), 
        EditorBrowsable(EditorBrowsableState.Never),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) 
        ] 
        public new event EventHandler BackgroundImageLayoutChanged {
            add { 
                base.BackgroundImageLayoutChanged += value;
            }
            remove {
                base.BackgroundImageLayoutChanged += value; 
            }
        } 
 
        [
        SRCategory(SR.CatAppearance), 
        SRDescription(SR.ToolStripContainerBottomToolStripPanelDescr),
        Localizable(false),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Content)
        ] 
        public ToolStripPanel BottomToolStripPanel {
            get { 
                return bottomPanel; 
            }
        } 

        [
        SRCategory(SR.CatAppearance),
        SRDescription(SR.ToolStripContainerBottomToolStripPanelVisibleDescr), 
        DefaultValue(true)
        ] 
        public bool BottomToolStripPanelVisible { 
            get {
                return BottomToolStripPanel.Visible; 
            }
            set {
                BottomToolStripPanel.Visible = value;
            } 
        }
 
        [ 
        SRCategory(SR.CatAppearance),
        SRDescription(SR.ToolStripContainerContentPanelDescr), 
        Localizable(false),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Content)
        ]
        public ToolStripContentPanel ContentPanel { 
            get {
                return contentPanel; 
            } 
        }
 
        [
        Browsable(false),
        EditorBrowsable(EditorBrowsableState.Never),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), 
        ]
        public new bool CausesValidation { 
            get { return base.CausesValidation; } 
            set { base.CausesValidation = value; }
        } 

        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
        public new event EventHandler CausesValidationChanged {
            add { 
                base.CausesValidationChanged += value;
            } 
            remove { 
                base.CausesValidationChanged -= value;
            } 
        }

        [
        Browsable(false), 
        EditorBrowsable(EditorBrowsableState.Never),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), 
        ] 
        public new ContextMenuStrip ContextMenuStrip {
            get { return base.ContextMenuStrip; } 
            set { base.ContextMenuStrip = value; }
        }

        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)] 
        public new event EventHandler ContextMenuStripChanged {
            add { 
                base.ContextMenuStripChanged += value; 
            }
            remove { 
                base.ContextMenuStripChanged -= value;
            }
        }
 
        [
        Browsable(false), 
        EditorBrowsable(EditorBrowsableState.Never), 
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
        ] 
        public override Cursor Cursor {
            get { return base.Cursor; }
            set { base.Cursor = value; }
        } 

        [ 
        Browsable(false), 
        EditorBrowsable(EditorBrowsableState.Never),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), 
        ]
        public new event EventHandler CursorChanged {
            add {
                base.CursorChanged += value; 
            }
            remove { 
                base.CursorChanged -= value; 
            }
        } 


        protected override Size DefaultSize {
            get { 
                return new Size(150, 175);
            } 
        } 

        [ 
        Browsable(false),
        EditorBrowsable(EditorBrowsableState.Never),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
        ] 
        public new Color ForeColor {
            get { return base.ForeColor; } 
            set { base.ForeColor = value; } 
        }
 
        [
        Browsable(false),
        EditorBrowsable(EditorBrowsableState.Never),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), 
        ]
        public new event EventHandler ForeColorChanged { 
            add { 
                base.ForeColorChanged += value;
            } 
            remove {
                base.ForeColorChanged -= value;
            }
        } 

        [ 
        SRCategory(SR.CatAppearance), 
        SRDescription(SR.ToolStripContainerLeftToolStripPanelDescr),
        Localizable(false), 
        DesignerSerializationVisibility(DesignerSerializationVisibility.Content)
        ]
        public ToolStripPanel LeftToolStripPanel {
            get { 
                return leftPanel;
            } 
        } 

 
        [
        SRCategory(SR.CatAppearance),
        SRDescription(SR.ToolStripContainerLeftToolStripPanelVisibleDescr),
        DefaultValue(true) 
        ]
        public bool LeftToolStripPanelVisible { 
            get { 
                return LeftToolStripPanel.Visible;
            } 
            set {
                LeftToolStripPanel.Visible = value;
            }
        } 

 
        [ 
        SRCategory(SR.CatAppearance),
        SRDescription(SR.ToolStripContainerRightToolStripPanelDescr), 
        Localizable(false),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Content)
        ]
        public ToolStripPanel RightToolStripPanel { 
            get {
                return rightPanel; 
            } 
        }
 
        [
        SRCategory(SR.CatAppearance),
        SRDescription(SR.ToolStripContainerRightToolStripPanelVisibleDescr),
        DefaultValue(true) 
        ]
        public bool RightToolStripPanelVisible { 
            get { 
                return RightToolStripPanel.Visible;
            } 
            set {
                RightToolStripPanel.Visible = value;
            }
        } 

        [ 
        SRCategory(SR.CatAppearance), 
        SRDescription(SR.ToolStripContainerTopToolStripPanelDescr),
        Localizable(false), 
        DesignerSerializationVisibility(DesignerSerializationVisibility.Content)
        ]
        public ToolStripPanel TopToolStripPanel {
            get { 
                return topPanel;
            } 
        } 

        [ 
        SRCategory(SR.CatAppearance),
        SRDescription(SR.ToolStripContainerTopToolStripPanelVisibleDescr),
        DefaultValue(true)
        ] 
        public bool TopToolStripPanelVisible {
            get { 
                return TopToolStripPanel.Visible; 
            }
            set { 
                TopToolStripPanel.Visible = value;
            }
        }
 
        /// 
        ///  
        ///     Controls Collection... 
        ///     This is overriden so that the Controls.Add ( ) is not Code Gened...
        ///  
        [EditorBrowsable(EditorBrowsableState.Never)]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public new Control.ControlCollection Controls {
            get { 
                return base.Controls;
            } 
        } 

        [EditorBrowsable(EditorBrowsableState.Advanced)] 
        protected override Control.ControlCollection CreateControlsInstance() {
            return new ToolStripContainerTypedControlCollection(this, /*isReadOnly*/true);
        }
 
        protected override void OnRightToLeftChanged(EventArgs e) {
            base.OnRightToLeftChanged(e); 
            RightToLeft rightToLeft = this.RightToLeft; 

            // no need to suspend layout - we're already in a layout transaction. 
            if (rightToLeft == RightToLeft.Yes) {
                RightToolStripPanel.Dock = DockStyle.Left;
                LeftToolStripPanel.Dock = DockStyle.Right;
            } 
            else {
                RightToolStripPanel.Dock = DockStyle.Right; 
                LeftToolStripPanel.Dock = DockStyle.Left; 
            }
        } 

        protected override void OnSizeChanged(EventArgs e) {
            foreach (Control c in this.Controls) {
                c.SuspendLayout(); 
            }
            base.OnSizeChanged(e); 
            foreach (Control c in this.Controls) { 
                c.ResumeLayout();
            } 

        }

        internal override void RecreateHandleCore() { 
            //If ToolStripContainer's Handle is getting created demand create the childControl handle's
            // Refer vsw : 517556 for more details. 
            if (IsHandleCreated) { 
                foreach(Control c in Controls) {
                    c.CreateControl(true); 
                }
            }
            base.RecreateHandleCore();
 
        }
 
 
        internal class ToolStripContainerTypedControlCollection : WindowsFormsUtils.ReadOnlyControlCollection {
            ToolStripContainer owner; 
            Type contentPanelType = typeof(ToolStripContentPanel);
            Type panelType = typeof(ToolStripPanel);

            public ToolStripContainerTypedControlCollection(Control c, bool isReadOnly) 
                : base(c, isReadOnly) {
                this.owner = c as ToolStripContainer; 
            } 

            public override void Add(Control value) { 
                if (value == null) {
                    throw new ArgumentNullException("value");
                }
                if (IsReadOnly) { 
                    throw new NotSupportedException(SR.GetString(SR.ToolStripContainerUseContentPanel));
                } 
 
                Type controlType = value.GetType();
                if (!contentPanelType.IsAssignableFrom(controlType) && !panelType.IsAssignableFrom(controlType)) { 
                    throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, SR.GetString(SR.TypedControlCollectionShouldBeOfTypes, contentPanelType.Name, panelType.Name)), value.GetType().Name);
                }
                base.Add(value);
            } 
            public override void Remove(Control value) {
                if (value is ToolStripPanel || value is ToolStripContentPanel) { 
                    if (!owner.DesignMode) { 
                        if (IsReadOnly) throw new NotSupportedException(SR.GetString(SR.ReadonlyControlsCollection));
                    } 
                }
                base.Remove(value);
            }
 
            internal override void SetChildIndexInternal(Control child, int newIndex) {
                if (child is ToolStripPanel || child is ToolStripContentPanel) { 
                    if (!owner.DesignMode) { 
                        if (IsReadOnly) {
                            throw new NotSupportedException(SR.GetString(SR.ReadonlyControlsCollection)); 
                        }
                    }
                    else {
                        // just no-op it at DT. 
                        return;
                    } 
                } 
                base.SetChildIndexInternal(child, newIndex);
            } 

        }

    } 

 
} 

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

/// this is the UBER container for ToolStripPanels. 
namespace System.Windows.Forms { 

    using Microsoft.Win32; 
    using System;
    using System.ComponentModel;
    using System.Diagnostics;
    using System.Drawing; 
    using System.Runtime.InteropServices;
    using System.Windows.Forms; 
    using System.Collections; 
    using System.Globalization;
    using System.Windows.Forms.Layout; 

    [ComVisible(true)]
    [ClassInterface(ClassInterfaceType.AutoDispatch)]
    [Designer("System.Windows.Forms.Design.ToolStripContainerDesigner, " + AssemblyRef.SystemDesign)] 
    [SRDescription(SR.ToolStripContainerDesc)]
    public class ToolStripContainer : ContainerControl { 
 
        private ToolStripPanel topPanel;
        private ToolStripPanel bottomPanel; 
        private ToolStripPanel leftPanel;
        private ToolStripPanel rightPanel;
        private ToolStripContentPanel contentPanel;
 

        public ToolStripContainer() { 
 
            SetStyle(ControlStyles.ResizeRedraw | ControlStyles.SupportsTransparentBackColor, true);
 
            SuspendLayout();
            try {
                // undone - smart demand creation
                topPanel = new ToolStripPanel(this); 
                bottomPanel = new ToolStripPanel(this);
                leftPanel = new ToolStripPanel(this); 
                rightPanel = new ToolStripPanel(this); 
                contentPanel = new ToolStripContentPanel();
                contentPanel.Dock = DockStyle.Fill; 
                topPanel.Dock = DockStyle.Top;
                bottomPanel.Dock = DockStyle.Bottom;
                rightPanel.Dock = DockStyle.Right;
                leftPanel.Dock = DockStyle.Left; 

                ToolStripContainerTypedControlCollection controlCollection = this.Controls as ToolStripContainerTypedControlCollection; 
                if (controlCollection != null) { 
                    controlCollection.AddInternal(contentPanel);
                    controlCollection.AddInternal(leftPanel); 
                    controlCollection.AddInternal(rightPanel);
                    controlCollection.AddInternal(topPanel);
                    controlCollection.AddInternal(bottomPanel);
                } 
                // else consider throw new exception
 
            } 
            finally {
                ResumeLayout(true); 
            }
        }

 
        [
        Browsable(false), 
        EditorBrowsable(EditorBrowsableState.Never), 
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
        ] 
        public override bool AutoScroll {
            get { return base.AutoScroll; }
            set { base.AutoScroll = value; }
        } 

        [ 
        Browsable(false), 
        EditorBrowsable(EditorBrowsableState.Never),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) 
        ]
        public new Size AutoScrollMargin {
            get { return base.AutoScrollMargin; }
            set { base.AutoScrollMargin = value; } 
        }
 
        [ 
        Browsable(false),
        EditorBrowsable(EditorBrowsableState.Never), 
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
        ]
        public new Size AutoScrollMinSize {
            get { return base.AutoScrollMinSize; } 
            set { base.AutoScrollMinSize = value; }
        } 
        [ 
        Browsable(false),
        EditorBrowsable(EditorBrowsableState.Never), 
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
        ]
        public new Color BackColor {
            get { return base.BackColor; } 
            set { base.BackColor = value; }
        } 
 
        [
        Browsable(false), 
        EditorBrowsable(EditorBrowsableState.Never),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
        ]
        public new event EventHandler BackColorChanged { 
            add {
                base.BackColorChanged += value; 
            } 
            remove {
                base.BackColorChanged -= value; 
            }
        }

        [ 
        Browsable(false),
        EditorBrowsable(EditorBrowsableState.Never), 
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) 
        ]
        public new Image BackgroundImage { 
            get { return base.BackgroundImage; }
            set { base.BackgroundImage = value; }
        }
 

        [ 
        Browsable(false), 
        EditorBrowsable(EditorBrowsableState.Never),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) 
        ]
        public new event EventHandler BackgroundImageChanged {
            add {
                base.BackgroundImageChanged += value; 
            }
            remove { 
                base.BackgroundImageChanged -= value; 
            }
        } 

        [
        Browsable(false),
        EditorBrowsable(EditorBrowsableState.Never), 
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
        ] 
        public override ImageLayout BackgroundImageLayout { 
            get { return base.BackgroundImageLayout; }
            set { base.BackgroundImageLayout = value; } 
        }

        [
        Browsable(false), 
        EditorBrowsable(EditorBrowsableState.Never),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden) 
        ] 
        public new event EventHandler BackgroundImageLayoutChanged {
            add { 
                base.BackgroundImageLayoutChanged += value;
            }
            remove {
                base.BackgroundImageLayoutChanged += value; 
            }
        } 
 
        [
        SRCategory(SR.CatAppearance), 
        SRDescription(SR.ToolStripContainerBottomToolStripPanelDescr),
        Localizable(false),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Content)
        ] 
        public ToolStripPanel BottomToolStripPanel {
            get { 
                return bottomPanel; 
            }
        } 

        [
        SRCategory(SR.CatAppearance),
        SRDescription(SR.ToolStripContainerBottomToolStripPanelVisibleDescr), 
        DefaultValue(true)
        ] 
        public bool BottomToolStripPanelVisible { 
            get {
                return BottomToolStripPanel.Visible; 
            }
            set {
                BottomToolStripPanel.Visible = value;
            } 
        }
 
        [ 
        SRCategory(SR.CatAppearance),
        SRDescription(SR.ToolStripContainerContentPanelDescr), 
        Localizable(false),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Content)
        ]
        public ToolStripContentPanel ContentPanel { 
            get {
                return contentPanel; 
            } 
        }
 
        [
        Browsable(false),
        EditorBrowsable(EditorBrowsableState.Never),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), 
        ]
        public new bool CausesValidation { 
            get { return base.CausesValidation; } 
            set { base.CausesValidation = value; }
        } 

        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
        public new event EventHandler CausesValidationChanged {
            add { 
                base.CausesValidationChanged += value;
            } 
            remove { 
                base.CausesValidationChanged -= value;
            } 
        }

        [
        Browsable(false), 
        EditorBrowsable(EditorBrowsableState.Never),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), 
        ] 
        public new ContextMenuStrip ContextMenuStrip {
            get { return base.ContextMenuStrip; } 
            set { base.ContextMenuStrip = value; }
        }

        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)] 
        public new event EventHandler ContextMenuStripChanged {
            add { 
                base.ContextMenuStripChanged += value; 
            }
            remove { 
                base.ContextMenuStripChanged -= value;
            }
        }
 
        [
        Browsable(false), 
        EditorBrowsable(EditorBrowsableState.Never), 
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
        ] 
        public override Cursor Cursor {
            get { return base.Cursor; }
            set { base.Cursor = value; }
        } 

        [ 
        Browsable(false), 
        EditorBrowsable(EditorBrowsableState.Never),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), 
        ]
        public new event EventHandler CursorChanged {
            add {
                base.CursorChanged += value; 
            }
            remove { 
                base.CursorChanged -= value; 
            }
        } 


        protected override Size DefaultSize {
            get { 
                return new Size(150, 175);
            } 
        } 

        [ 
        Browsable(false),
        EditorBrowsable(EditorBrowsableState.Never),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
        ] 
        public new Color ForeColor {
            get { return base.ForeColor; } 
            set { base.ForeColor = value; } 
        }
 
        [
        Browsable(false),
        EditorBrowsable(EditorBrowsableState.Never),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), 
        ]
        public new event EventHandler ForeColorChanged { 
            add { 
                base.ForeColorChanged += value;
            } 
            remove {
                base.ForeColorChanged -= value;
            }
        } 

        [ 
        SRCategory(SR.CatAppearance), 
        SRDescription(SR.ToolStripContainerLeftToolStripPanelDescr),
        Localizable(false), 
        DesignerSerializationVisibility(DesignerSerializationVisibility.Content)
        ]
        public ToolStripPanel LeftToolStripPanel {
            get { 
                return leftPanel;
            } 
        } 

 
        [
        SRCategory(SR.CatAppearance),
        SRDescription(SR.ToolStripContainerLeftToolStripPanelVisibleDescr),
        DefaultValue(true) 
        ]
        public bool LeftToolStripPanelVisible { 
            get { 
                return LeftToolStripPanel.Visible;
            } 
            set {
                LeftToolStripPanel.Visible = value;
            }
        } 

 
        [ 
        SRCategory(SR.CatAppearance),
        SRDescription(SR.ToolStripContainerRightToolStripPanelDescr), 
        Localizable(false),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Content)
        ]
        public ToolStripPanel RightToolStripPanel { 
            get {
                return rightPanel; 
            } 
        }
 
        [
        SRCategory(SR.CatAppearance),
        SRDescription(SR.ToolStripContainerRightToolStripPanelVisibleDescr),
        DefaultValue(true) 
        ]
        public bool RightToolStripPanelVisible { 
            get { 
                return RightToolStripPanel.Visible;
            } 
            set {
                RightToolStripPanel.Visible = value;
            }
        } 

        [ 
        SRCategory(SR.CatAppearance), 
        SRDescription(SR.ToolStripContainerTopToolStripPanelDescr),
        Localizable(false), 
        DesignerSerializationVisibility(DesignerSerializationVisibility.Content)
        ]
        public ToolStripPanel TopToolStripPanel {
            get { 
                return topPanel;
            } 
        } 

        [ 
        SRCategory(SR.CatAppearance),
        SRDescription(SR.ToolStripContainerTopToolStripPanelVisibleDescr),
        DefaultValue(true)
        ] 
        public bool TopToolStripPanelVisible {
            get { 
                return TopToolStripPanel.Visible; 
            }
            set { 
                TopToolStripPanel.Visible = value;
            }
        }
 
        /// 
        ///  
        ///     Controls Collection... 
        ///     This is overriden so that the Controls.Add ( ) is not Code Gened...
        ///  
        [EditorBrowsable(EditorBrowsableState.Never)]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public new Control.ControlCollection Controls {
            get { 
                return base.Controls;
            } 
        } 

        [EditorBrowsable(EditorBrowsableState.Advanced)] 
        protected override Control.ControlCollection CreateControlsInstance() {
            return new ToolStripContainerTypedControlCollection(this, /*isReadOnly*/true);
        }
 
        protected override void OnRightToLeftChanged(EventArgs e) {
            base.OnRightToLeftChanged(e); 
            RightToLeft rightToLeft = this.RightToLeft; 

            // no need to suspend layout - we're already in a layout transaction. 
            if (rightToLeft == RightToLeft.Yes) {
                RightToolStripPanel.Dock = DockStyle.Left;
                LeftToolStripPanel.Dock = DockStyle.Right;
            } 
            else {
                RightToolStripPanel.Dock = DockStyle.Right; 
                LeftToolStripPanel.Dock = DockStyle.Left; 
            }
        } 

        protected override void OnSizeChanged(EventArgs e) {
            foreach (Control c in this.Controls) {
                c.SuspendLayout(); 
            }
            base.OnSizeChanged(e); 
            foreach (Control c in this.Controls) { 
                c.ResumeLayout();
            } 

        }

        internal override void RecreateHandleCore() { 
            //If ToolStripContainer's Handle is getting created demand create the childControl handle's
            // Refer vsw : 517556 for more details. 
            if (IsHandleCreated) { 
                foreach(Control c in Controls) {
                    c.CreateControl(true); 
                }
            }
            base.RecreateHandleCore();
 
        }
 
 
        internal class ToolStripContainerTypedControlCollection : WindowsFormsUtils.ReadOnlyControlCollection {
            ToolStripContainer owner; 
            Type contentPanelType = typeof(ToolStripContentPanel);
            Type panelType = typeof(ToolStripPanel);

            public ToolStripContainerTypedControlCollection(Control c, bool isReadOnly) 
                : base(c, isReadOnly) {
                this.owner = c as ToolStripContainer; 
            } 

            public override void Add(Control value) { 
                if (value == null) {
                    throw new ArgumentNullException("value");
                }
                if (IsReadOnly) { 
                    throw new NotSupportedException(SR.GetString(SR.ToolStripContainerUseContentPanel));
                } 
 
                Type controlType = value.GetType();
                if (!contentPanelType.IsAssignableFrom(controlType) && !panelType.IsAssignableFrom(controlType)) { 
                    throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, SR.GetString(SR.TypedControlCollectionShouldBeOfTypes, contentPanelType.Name, panelType.Name)), value.GetType().Name);
                }
                base.Add(value);
            } 
            public override void Remove(Control value) {
                if (value is ToolStripPanel || value is ToolStripContentPanel) { 
                    if (!owner.DesignMode) { 
                        if (IsReadOnly) throw new NotSupportedException(SR.GetString(SR.ReadonlyControlsCollection));
                    } 
                }
                base.Remove(value);
            }
 
            internal override void SetChildIndexInternal(Control child, int newIndex) {
                if (child is ToolStripPanel || child is ToolStripContentPanel) { 
                    if (!owner.DesignMode) { 
                        if (IsReadOnly) {
                            throw new NotSupportedException(SR.GetString(SR.ReadonlyControlsCollection)); 
                        }
                    }
                    else {
                        // just no-op it at DT. 
                        return;
                    } 
                } 
                base.SetChildIndexInternal(child, newIndex);
            } 

        }

    } 

 
} 

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

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