Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Designer / WinForms / System / WinForms / Design / BindingNavigatorDesigner.cs / 1 / BindingNavigatorDesigner.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- [assembly: System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode", Scope="member", Target="System.Windows.Forms.Design.BindingNavigatorDesigner..ctor()")] namespace System.Windows.Forms.Design { using System; using System.Collections; using System.Design; using System.Runtime.Serialization.Formatters; using System.Runtime.InteropServices; using System.ComponentModel; using System.ComponentModel.Design; using System.ComponentModel.Design.Serialization; using System.Diagnostics; using System.Windows.Forms; using System.Windows.Forms.Design.Behavior; using System.Reflection; ////// /// Designer for the BindingNavigator class. /// internal class BindingNavigatorDesigner : ToolStripDesigner { static string[] itemNames = new string[] { "MovePreviousItem", "MoveFirstItem", "MoveNextItem", "MoveLastItem", "AddNewItem", "DeleteItem", "PositionItem", "CountItem"}; ////// Initialize this designer. /// public override void Initialize(IComponent component) { base.Initialize(component); IComponentChangeService componentChangeSvc = (IComponentChangeService) GetService(typeof(IComponentChangeService)); if (componentChangeSvc != null) { componentChangeSvc.ComponentRemoved += new ComponentEventHandler(ComponentChangeSvc_ComponentRemoved); componentChangeSvc.ComponentChanged += new ComponentChangedEventHandler(ComponentChangeSvc_ComponentChanged); } } ////// Dispose this designer. /// protected override void Dispose(bool disposing) { if (disposing) { IComponentChangeService componentChangeSvc = (IComponentChangeService) GetService(typeof(IComponentChangeService)); if (componentChangeSvc != null) { componentChangeSvc.ComponentRemoved -= new ComponentEventHandler(ComponentChangeSvc_ComponentRemoved); componentChangeSvc.ComponentChanged -= new ComponentChangedEventHandler(ComponentChangeSvc_ComponentChanged); } } base.Dispose(disposing); } ////// When a new BindingNavigator is created, we pre-propulate it with a set of standard items. /// The items are created by the control's own AddStandardItems() virtual method. After the /// items have been created, we have to properly site them, so that they designer knows /// about them and will include them in its code spit. /// public override void InitializeNewComponent(IDictionary defaultValues) { base.InitializeNewComponent(defaultValues); BindingNavigator dn = (BindingNavigator) Component; IDesignerHost host = (IDesignerHost) this.Component.Site.GetService(typeof(IDesignerHost)); try { _autoAddNewItems = false; // Temporarily suppress "new items go to the selected strip" behavior dn.SuspendLayout(); // Turn off layout while adding items dn.AddStandardItems(); // Let the control add its standard items (user overridable) SiteItems(host, dn.Items); // Recursively site and name all the items on the strip RaiseItemsChanged(); // Make designer Undo engine aware of the newly added and sited items dn.ResumeLayout(); // Allow strip to lay out now dn.ShowItemToolTips = true; // Non-default property setting for ShowToolTips } finally { _autoAddNewItems = true; } } ////// Raise design time events to signal that the strip's Items collection has changed. This /// ensures the items added during component initialization are picked up by the Undo engine. /// private void RaiseItemsChanged() { BindingNavigator dn = (BindingNavigator) Component; IComponentChangeService componentChangeSvc = (IComponentChangeService) GetService(typeof(IComponentChangeService)); if (componentChangeSvc != null) { MemberDescriptor itemsProp = TypeDescriptor.GetProperties(dn)["Items"]; componentChangeSvc.OnComponentChanging(dn, itemsProp); componentChangeSvc.OnComponentChanged(dn, itemsProp, null, null); foreach (string itemName in itemNames) { PropertyDescriptor prop = TypeDescriptor.GetProperties(dn)[itemName]; if (prop != null) { componentChangeSvc.OnComponentChanging(dn, prop); componentChangeSvc.OnComponentChanged(dn, prop, null, null); } } } } ////// Site a tool strip item, and any items contained within it. /// private void SiteItem(IDesignerHost host, ToolStripItem item) { // Skip any controls added for design-time use only if (item is DesignerToolStripControlHost) { return; } // Site the item in the container, giving it a unique site name based on its initial Name property host.Container.Add(item, DesignerUtils.GetUniqueSiteName(host, item.Name)); // Update the item's Name property to reflect the unique site name that it was actually given item.Name = item.Site.Name; // Site any sub-items of this item ToolStripDropDownItem dropDownItem = item as ToolStripDropDownItem; if (dropDownItem != null && dropDownItem.HasDropDownItems) { SiteItems(host, dropDownItem.DropDownItems); } } ////// Site a collection of tool strip items. /// private void SiteItems(IDesignerHost host, ToolStripItemCollection items) { foreach (ToolStripItem item in items) { SiteItem(host, item); } } ////// When a tool strip item is removed from this BindingNavigator tool strip, check to see whether /// its currently being referenced by any of the BindingNavigator's "magic item" properties. If /// so, clear that reference so that the strip is not hanging onto deleted items. /// private void ComponentChangeSvc_ComponentRemoved(object sender, ComponentEventArgs e) { ToolStripItem item = e.Component as ToolStripItem; if (item != null) { BindingNavigator dn = (BindingNavigator) Component; if (item == dn.MoveFirstItem) { dn.MoveFirstItem = null; } else if (item == dn.MovePreviousItem) { dn.MovePreviousItem = null; } else if (item == dn.MoveNextItem) { dn.MoveNextItem = null; } else if (item == dn.MoveLastItem) { dn.MoveLastItem = null; } else if (item == dn.PositionItem) { dn.PositionItem = null; } else if (item == dn.CountItem) { dn.CountItem = null; } else if (item == dn.AddNewItem) { dn.AddNewItem = null; } else if (item == dn.DeleteItem) { dn.DeleteItem = null; } } } ////// private void ComponentChangeSvc_ComponentChanged(object sender, ComponentChangedEventArgs e) { BindingNavigator dn = (BindingNavigator) Component; if (e.Component != null && e.Component == dn.CountItem && e.Member != null && e.Member.Name == "Text") { dn.CountItemFormat = dn.CountItem.Text; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. 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