Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Designer / WinForms / System / WinForms / Design / StandardCommandToolStripMenuItem.cs / 1 / StandardCommandToolStripMenuItem.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* */ namespace System.Windows.Forms.Design { using System.Design; using System.ComponentModel; using System.Diagnostics; using System.Diagnostics.CodeAnalysis; using System; using System.Security; using System.Security.Permissions; using System.ComponentModel.Design; using System.Windows.Forms; using System.Drawing; using System.Drawing.Design; using System.Windows.Forms.Design.Behavior; using System.Runtime.InteropServices; using System.Drawing.Drawing2D; ////// /// Associates standard command with ToolStripMenuItem. /// ///internal class StandardCommandToolStripMenuItem : ToolStripMenuItem { private bool _cachedImage = false; private Image _image = null; private CommandID menuID; private IMenuCommandService menuCommandService; private IServiceProvider serviceProvider; private string name; private MenuCommand menuCommand; // Ok to call MenuService.FindComand to find the menuCommand mapping to the appropriated menuID. [SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")] [SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes")] [SuppressMessage("Microsoft.Security", "CA2102:CatchNonClsCompliantExceptionsInGeneralHandlers")] public StandardCommandToolStripMenuItem(CommandID menuID, string text, string imageName, IServiceProvider serviceProvider) { this.menuID = menuID; this.serviceProvider = serviceProvider; // Findcommand can throw; so we need to catch and disable the command. try { menuCommand = MenuService.FindCommand(menuID); } catch { this.Enabled = false; } this.Text = text; this.name = imageName; RefreshItem(); } public void RefreshItem() { if (menuCommand != null) { this.Visible = menuCommand.Visible; this.Enabled = menuCommand.Enabled; this.Checked = menuCommand.Checked; } } /// /// /// Retrieves the menu editor service, which we cache for speed. /// public IMenuCommandService MenuService { get { if (menuCommandService == null) { menuCommandService = (IMenuCommandService)serviceProvider.GetService(typeof(IMenuCommandService)); } return menuCommandService; } } public override Image Image { // Standard 'catch all - rethrow critical' exception pattern [SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes")] get { // Defer loading the image until we're sure we need it if (!_cachedImage) { _cachedImage = true; try { if (name != null) { _image = new Bitmap(typeof(ToolStripMenuItem), name + ".bmp"); } this.ImageTransparentColor = Color.Magenta; } catch (Exception ex) { if (ClientUtils.IsCriticalException(ex)) { throw; } } catch { } } return _image; } set { _image = value; _cachedImage = true; } } protected override void OnClick(System.EventArgs e) { if (menuCommand != null) { menuCommand.Invoke(); } else if (MenuService != null) { if (MenuService.GlobalInvoke(menuID)) { return; } } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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