Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx40 / Tools / System.Activities.Presentation / System / Activities / Presentation / Toolbox / ToolboxControl.cs / 1305376 / ToolboxControl.cs
//------------------------------------------------------------ // Copyright (c) Microsoft Corporation. All rights reserved. //----------------------------------------------------------- namespace System.Activities.Presentation.Toolbox { using System; using System.Activities.Presentation.View; using System.Collections.Generic; using System.Collections.Specialized; using System.ComponentModel; using System.Diagnostics.CodeAnalysis; using System.Drawing.Design; using System.Runtime; using System.Windows; using System.Windows.Controls; using System.Windows.Input; using System.Windows.Markup; // This class is responsible for rendering cate----ezed tools collection // It also provides methods for notifing user about tool selection/creation events [TemplatePart(Name = "PART_SearchBox"), TemplatePart(Name = "PART_Tools")] [ContentProperty("Categories")] sealed public partial class ToolboxControl : Control { public static readonly DependencyProperty ToolboxFileProperty = DependencyProperty.Register("ToolboxFile", typeof(string), typeof(ToolboxControl), new PropertyMetadata( string.Empty, new PropertyChangedCallback(OnToolboxFileChanged))); static readonly DependencyPropertyKey SelectedToolPropertyKey = DependencyProperty.RegisterReadOnly("SelectedTool", typeof(ToolboxItem), typeof(ToolboxControl), new PropertyMetadata( null, new PropertyChangedCallback(OnToolSelected))); public static readonly DependencyProperty SelectedToolProperty = SelectedToolPropertyKey.DependencyProperty; public static readonly DependencyProperty ToolItemStyleProperty = DependencyProperty.Register("ToolItemStyle", typeof(Style), typeof(ToolboxControl), new UIPropertyMetadata(null)); public static readonly DependencyProperty CategoryItemStyleProperty = DependencyProperty.Register("CategoryItemStyle", typeof(Style), typeof(ToolboxControl), new UIPropertyMetadata(null)); public static readonly DependencyProperty ToolTemplateProperty = DependencyProperty.Register("ToolTemplate", typeof(DataTemplate), typeof(ToolboxControl), new UIPropertyMetadata(null)); public static readonly DependencyProperty CategoryTemplateProperty = DependencyProperty.Register("CategoryTemplate", typeof(DataTemplate), typeof(ToolboxControl), new UIPropertyMetadata(null)); public static readonly RoutedEvent ToolCreatedEvent = EventManager.RegisterRoutedEvent("ToolCreated", RoutingStrategy.Bubble, typeof(ToolCreatedEventHandler), typeof(ToolboxControl)); public static readonly RoutedEvent ToolSelectedEvent = EventManager.RegisterRoutedEvent("ToolSelected", RoutingStrategy.Bubble, typeof(RoutedEventHandler), typeof(ToolboxControl)); internal TextBox searchBox; TreeView toolsTreeView; ToolboxCategoryItems categories; [SuppressMessage("Microsoft.Performance", "CA1810:InitializeReferenceTypeStaticFieldsInline")] static ToolboxControl() { DefaultStyleKeyProperty.OverrideMetadata(typeof(ToolboxControl), new FrameworkPropertyMetadata(typeof(ToolboxControl))); } public ToolboxControl() { var callback = new NotifyCollectionChangedEventHandler(this.OnCategoryCollectionChanged); this.categories = new ToolboxCategoryItems(callback); } public event ToolCreatedEventHandler ToolCreated { add { AddHandler(ToolCreatedEvent, value); } remove { RemoveHandler(ToolCreatedEvent, value); } } public event RoutedEventHandler ToolSelected { add { AddHandler(ToolSelectedEvent, value); } remove { RemoveHandler(ToolSelectedEvent, value); } } [Fx.Tag.KnownXamlExternal] [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)] [SuppressMessage(FxCop.Category.Usage, "CA2227:CollectionPropertiesShouldBeReadOnly", Justification = "The setter implemenation is required for XAML support. The setter doesn't replace the collection instance, but copies its content to internal collection")] public ToolboxCategoryItems Categories { get { return this.categories; } set { this.categories.Clear(); if (null != value) { foreach (var category in value) { this.categories.Add(category); } } } } public string ToolboxFile { get { return (string)GetValue(ToolboxFileProperty); } set { SetValue(ToolboxFileProperty, value); } } [Fx.Tag.KnownXamlExternal] public ToolboxItem SelectedTool { get { return (ToolboxItem)GetValue(SelectedToolProperty); } private set { SetValue(SelectedToolPropertyKey, value); } } [Fx.Tag.KnownXamlExternal] public Style ToolItemStyle { get { return (Style)GetValue(ToolItemStyleProperty); } set { SetValue(ToolItemStyleProperty, value); } } [Fx.Tag.KnownXamlExternal] public Style CategoryItemStyle { get { return (Style)GetValue(CategoryItemStyleProperty); } set { SetValue(CategoryItemStyleProperty, value); } } [Fx.Tag.KnownXamlExternal] public DataTemplate ToolTemplate { get { return (DataTemplate)GetValue(ToolTemplateProperty); } set { SetValue(ToolTemplateProperty, value); } } [Fx.Tag.KnownXamlExternal] public DataTemplate CategoryTemplate { get { return (DataTemplate)GetValue(CategoryTemplateProperty); } set { SetValue(CategoryTemplateProperty, value); } } [Fx.Tag.KnownXamlExternal] public WorkflowDesigner AssociatedDesigner { get; set; } static void OnToolboxFileChanged(DependencyObject sender, DependencyPropertyChangedEventArgs args) { ToolboxControl toolboxControl = sender as ToolboxControl; string fileName = args.NewValue as string; if (null == toolboxControl || null == fileName) { throw FxTrace.Exception.AsError(new ArgumentNullException(null == toolboxControl ? "toolboxControl" : "fileName")); } try { ToolboxItemLoader loader = ToolboxItemLoader.GetInstance(); loader.LoadToolboxItems(fileName, toolboxControl.categories, false); } catch { if (!DesignerProperties.GetIsInDesignMode(toolboxControl)) { throw; } } } static void OnToolSelected(DependencyObject sender, DependencyPropertyChangedEventArgs args) { ToolboxControl toolboxControl = sender as ToolboxControl; if (null == toolboxControl) { throw FxTrace.Exception.AsError(new ArgumentNullException("sender")); } if (null != toolboxControl.SelectedTool) { toolboxControl.RaiseEvent(new RoutedEventArgs(ToolSelectedEvent, toolboxControl)); } } public override void OnApplyTemplate() { base.OnApplyTemplate(); //template is applied, look for required controls within it this.searchBox = this.Template.FindName("PART_SearchBox", this) as TextBox; this.toolsTreeView = this.Template.FindName("PART_Tools", this) as TreeView; //if tools tree view exists - assign style and container selectors (there are different styles //for Cateogries and Tools if (null != this.toolsTreeView) { this.toolsTreeView.ItemsSource = this.Categories; this.toolsTreeView.ItemContainerStyleSelector = new TreeViewContainerStyleSelector(this); this.toolsTreeView.ItemTemplateSelector = new TreeViewTemplateSelector(this); this.toolsTreeView.SelectedItemChanged += (s, e) => { var toolWrapper = e.NewValue as ToolboxItemWrapper; this.SelectedTool = toolWrapper != null ? toolWrapper.ToolboxItem : null; }; } } protected override void OnPreviewKeyDown(KeyEventArgs e) { switch (e.Key) { case Key.Up: case Key.Down: if (null != this.searchBox && e.OriginalSource == this.searchBox && null != this.toolsTreeView) { this.toolsTreeView.Focus(); } break; case Key.Enter: ToolboxItemCreated(); e.Handled = true; break; default: if (null != this.searchBox && e.Source != this.searchBox) { if (((e.Key >= Key.A && e.Key <= Key.Z) || (e.Key >= Key.D0 && e.Key <= Key.D9)) && (e.KeyboardDevice.Modifiers == ModifierKeys.None || e.KeyboardDevice.Modifiers == ModifierKeys.Shift)) { this.searchBox.Focus(); } } break; } base.OnPreviewKeyDown(e); } void OnCategoryCollectionChanged(object sender, NotifyCollectionChangedEventArgs e) { switch (e.Action) { case NotifyCollectionChangedAction.Add: foreach (ToolboxCategory category in e.NewItems) { if (null == category) { throw FxTrace.Exception.ArgumentNull("category"); } var listener = new NotifyCollectionChangedEventHandler(OnToolsCollectionChange); category.HandleToolCollectionNotification(listener, true); var items = new List(); foreach (ToolboxItemWrapper toolWrapper in category.Tools) { items.Add(toolWrapper); } OnToolsCollectionChange(category, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, items, 0)); } break; default: break; } if (null != this.toolsTreeView) { this.toolsTreeView.ItemsSource = null; this.toolsTreeView.ItemsSource = this.categories; } } void OnToolsCollectionChange(object sender, NotifyCollectionChangedEventArgs args) { switch (args.Action) { case NotifyCollectionChangedAction.Add: foreach (ToolboxItemWrapper tool in args.NewItems) { if (null == tool) { throw FxTrace.Exception.ArgumentNull("tool"); } tool.PropertyChanged += new PropertyChangedEventHandler(OnToolPropertyChanged); OnToolPropertyChanged(tool, null); } break; default: break; } } void OnToolPropertyChanged(object sender, PropertyChangedEventArgs e) { try { ToolboxItemWrapper tool = (ToolboxItemWrapper)sender; tool.ResolveToolboxItem(); } catch { if (!DesignerProperties.GetIsInDesignMode(this)) { throw; } } } internal void OnToolMouseMove(object sender, MouseEventArgs args) { ToolboxItem tool; ToolboxItemWrapper toolWrapper; if (args.LeftButton == MouseButtonState.Pressed && TryGetSelectedToolboxItem(out tool, out toolWrapper)) { DataObject dataObject = new DataObject(DragDropHelper.WorkflowItemTypeNameFormat, toolWrapper.Type.AssemblyQualifiedName); DragDrop.DoDragDrop(this, dataObject, DragDropEffects.Link | DragDropEffects.Copy); } } internal void OnTreeViewDoubleClick(object sender, MouseEventArgs args) { ToolboxItemCreated(); } void ToolboxItemCreated() { ToolboxItem tool; ToolboxItemWrapper toolWrapper; if (TryGetSelectedToolboxItem(out tool, out toolWrapper)) { if (null != this.AssociatedDesigner && null != this.AssociatedDesigner.Context) { DesignerView target = this.AssociatedDesigner.Context.Services.GetService (); Dictionary parameters = new Dictionary (); parameters["TypeName"] = toolWrapper.Type.AssemblyQualifiedName; ((RoutedCommand)DesignerView.CreateWorkflowElementCommand).Execute(parameters, target); } ToolCreatedEventArgs args = new ToolCreatedEventArgs(ToolCreatedEvent, this, tool.CreateComponents()); RaiseEvent(args); } } bool TryGetSelectedToolboxItem(out ToolboxItem toolboxItem, out ToolboxItemWrapper toolboxItemWrapper) { toolboxItem = null; toolboxItemWrapper = null; if (null != this.toolsTreeView && null != this.toolsTreeView.SelectedItem) { ToolboxItemWrapper tool = this.toolsTreeView.SelectedItem as ToolboxItemWrapper; if (null != tool && null != tool.ToolboxItem) { toolboxItem = tool.ToolboxItem; toolboxItemWrapper = tool; } } return (null != toolboxItem); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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