Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx40 / Tools / System.Activities.Presentation / System / Activities / Presentation / View / ExpressionValueEditor.cs / 1305376 / ExpressionValueEditor.cs
//---------------------------------------------------------------- // Copyright (c) Microsoft Corporation. All rights reserved. //--------------------------------------------------------------- namespace System.Activities.Presentation.View { using System.Activities.Presentation.Internal.PropertyEditing; using System.Activities.Presentation.Model; using System.Activities.Presentation.PropertyEditing; using System.Activities.Presentation.Converters; using System.Globalization; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Runtime; class ExpressionValueEditor : DialogPropertyValueEditor { public ExpressionValueEditor() { //default template for inline editor this.InlineEditorTemplate = EditorResources.GetResources()["inlineExpressionEditorTemplate"] as DataTemplate; } public override void ShowDialog(PropertyValue propertyValue, IInputElement commandSource) { //get the property entry to model item converter IValueConverter converter = (ModelPropertyEntryToOwnerActivityConverter)EditorResources.GetResources()["ModelPropertyEntryToOwnerActivityConverter"]; ModelItem item = (ModelItem)converter.Convert(propertyValue.ParentProperty, typeof(ModelItem), false, null); //we need editing context EditingContext ctx = ((IModelTreeItem)item).ModelTreeManager.Context; //get the default dialog owner DependencyObject owner = ctx.Services.GetService(); //create and show dialog with owner, edited expression and context (new EditorDialog(owner, propertyValue, ctx, this.DialogTemplate, this.DialogTitle)).ShowOkCancel(); } protected virtual DataTemplate DialogTemplate { get { return (DataTemplate)EditorResources.GetResources()["dialogExpressionEditorTemplate"]; } } protected virtual string DialogTitle { get { return (string)EditorResources.GetResources()["dialogExpressionEditorTitle"]; } } private sealed class EditorDialog : WorkflowElementDialog { public EditorDialog(DependencyObject owner, PropertyValue propertyValue, EditingContext context, DataTemplate dialogTemplate, string title) { //setup properties this.MinWidth = 350; this.MinHeight = 185; this.WindowResizeMode = ResizeMode.CanResize; this.WindowSizeToContent = SizeToContent.Manual; this.Owner = owner; this.Context = context; this.Title = title; ContentPresenter contentPresenter = new ContentPresenter() { Content = propertyValue, //get default editor template for content presenter ContentTemplate = dialogTemplate }; this.Content = contentPresenter; this.Loaded += OnWindowLoaded; } void OnWindowLoaded(object sender, RoutedEventArgs args) { ContentPresenter presenter = (ContentPresenter)this.Content; PropertyValue propertyValue = (PropertyValue)presenter.Content; Button okButton = (Button)this.FindName("okButton"); ExpressionTextBox etb = VisualTreeUtils.GetNamedChild (presenter, "PART_expressionTextBox"); TextBlock hint = VisualTreeUtils.GetNamedChild (presenter, "PART_hintText"); Fx.Assert(etb != null, "ExpressionTextBox with name 'PART_expressionTextBox' should be in the template!"); Fx.Assert(hint != null, "Hint TextBlock with name 'PART_hintText' should be in the template!"); //bind button with ETB's commit command okButton.Command = DesignerView.CommitCommand; okButton.CommandTarget = etb; etb.BeginEdit(); if (null != etb && null != hint) { IValueConverter typeToStringConverter = (IValueConverter)EditorResources.GetResources()["TypeParameterConverter"]; string hintFormatString = (string)EditorResources.GetResources()["dialogExpressionEditorHintFormatString"]; //convert expression's container type to friendly name (i.e. replace generic '1 with ) string friendlyTypeName = (string) typeToStringConverter.Convert(etb.ExpressionType ?? propertyValue.ParentProperty.PropertyType, typeof(string), null, CultureInfo.CurrentCulture); //format editor title to include friendly type name and property name hint.Text = string.Format(CultureInfo.CurrentCulture, hintFormatString, propertyValue.ParentProperty.PropertyName, friendlyTypeName); } } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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