Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Designer / WinForms / System / WinForms / Design / TemplateNodeContextMenu.cs / 1 / TemplateNodeContextMenu.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* */ namespace System.Windows.Forms.Design { using System.Design; using System.Runtime.InteropServices; using System.ComponentModel; using System.Diagnostics; using System.Diagnostics.CodeAnalysis; using System; using System.Security; using System.Security.Permissions; using System.Collections; using System.ComponentModel.Design; using System.Windows.Forms; using System.Drawing; using System.Drawing.Design; using System.Windows.Forms.Design; using System.Windows.Forms.Design.Behavior; ////// Custom ContextMenu section for ToolStripMenuItems. /// internal class TemplateNodeCustomMenuItemCollection : CustomMenuItemCollection { private ToolStripItem currentItem; private IServiceProvider serviceProvider; private ToolStripMenuItem insertToolStripMenuItem; public TemplateNodeCustomMenuItemCollection(IServiceProvider provider, Component currentItem): base() { this.serviceProvider = provider; this.currentItem = currentItem as ToolStripItem; PopulateList(); } ////// Immediate parent /// - can be ToolStrip if the Item is on the toplevel /// private ToolStrip ParentTool { get { return currentItem.Owner; } } private void PopulateList() { this.insertToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem(); this.insertToolStripMenuItem.Text = SR.GetString(SR.ToolStripItemContextMenuInsert); this.insertToolStripMenuItem.DropDown = ToolStripDesignerUtils.GetNewItemDropDown(ParentTool, currentItem, new EventHandler(AddNewItemClick), false, serviceProvider); this.Add(insertToolStripMenuItem); } private void AddNewItemClick(object sender, EventArgs e) { ItemTypeToolStripMenuItem senderItem = (ItemTypeToolStripMenuItem)sender; Type t = senderItem.ItemType; // we are inserting a new item.. InsertItem(t); } // INSERT LOGIC ...... private void InsertItem(Type t) { InsertToolStripItem(t); } ////// Insert Item into ToolStrip. /// // Standard 'catch all - rethrow critical' exception pattern [SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes")] [SuppressMessage("Microsoft.Security", "CA2102:CatchNonClsCompliantExceptionsInGeneralHandlers")] private void InsertToolStripItem(Type t) { IDesignerHost designerHost = (IDesignerHost)serviceProvider.GetService(typeof(IDesignerHost)); Debug.Assert(designerHost != null, "Why didn't we get a designer host?"); ToolStrip parent = ParentTool; int dummyIndex = parent.Items.IndexOf(currentItem); IDesigner designer = null; DesignerTransaction newItemTransaction = designerHost.CreateTransaction(SR.GetString(SR.ToolStripAddingItem)); try { // turn off Adding/Added events listened to by the ToolStripDesigner... ToolStripDesigner._autoAddNewItems = false; // the code in ComponentAdded will actually get the add done. // IComponent component = designerHost.CreateComponent(t); designer = designerHost.GetDesigner(component); if (designer is ComponentDesigner) { ((ComponentDesigner)designer).InitializeNewComponent(null); } //Set the Image property and DisplayStyle... if (component is ToolStripButton || component is ToolStripSplitButton || component is ToolStripDropDownButton) { Image image = null; try { image = new Bitmap(typeof(ToolStripButton), "blank.bmp"); } catch (Exception e) { if (ClientUtils.IsCriticalException(e)) { throw; } } PropertyDescriptor imageProperty = TypeDescriptor.GetProperties(component)["Image"]; Debug.Assert(imageProperty != null, "Could not find 'Image' property in ToolStripItem."); if (imageProperty != null && image != null) { imageProperty.SetValue(component, image); } PropertyDescriptor dispProperty = TypeDescriptor.GetProperties(component)["DisplayStyle"]; Debug.Assert(dispProperty != null, "Could not find 'DisplayStyle' property in ToolStripItem."); if (dispProperty != null) { dispProperty.SetValue(component, ToolStripItemDisplayStyle.Image); } PropertyDescriptor imageTransProperty = TypeDescriptor.GetProperties(component)["ImageTransparentColor"]; Debug.Assert(imageTransProperty != null, "Could not find 'DisplayStyle' property in ToolStripItem."); if (imageTransProperty != null) { imageTransProperty.SetValue(component, Color.Magenta); } } Debug.Assert(dummyIndex != -1, "Why is the index of the Item negative?"); parent.Items.Insert(dummyIndex, (ToolStripItem)component); // set the selection to our new item.. since we destroyed Original component.. // we have to ask SelectionServive from new Component ISelectionService selSvc = (ISelectionService)serviceProvider.GetService(typeof(ISelectionService)); if (selSvc != null) { selSvc.SetSelectedComponents(new object[] { component }, SelectionTypes.Replace); } } catch (Exception ex) { if (newItemTransaction != null) { newItemTransaction.Cancel(); newItemTransaction = null; } if (ClientUtils.IsCriticalException(ex)) { throw; } } finally { if (newItemTransaction != null) { newItemTransaction.Commit(); newItemTransaction = null; } // turn off Adding/Added events listened to by the ToolStripDesigner... ToolStripDesigner._autoAddNewItems = true; // Add the glyphs if the parent is DropDown. ToolStripDropDown parentDropDown = parent as ToolStripDropDown; if (parentDropDown != null && parentDropDown.Visible) { ToolStripDropDownItem ownerItem = parentDropDown.OwnerItem as ToolStripDropDownItem; if (ownerItem != null) { ToolStripMenuItemDesigner itemDesigner = designerHost.GetDesigner(ownerItem) as ToolStripMenuItemDesigner; if (itemDesigner != null) { itemDesigner.ResetGlyphs(ownerItem); } } } } } // END LOGIC } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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