Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Designer / WinForms / System / WinForms / Design / TextBoxBaseDesigner.cs / 1 / TextBoxBaseDesigner.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* */ namespace System.Windows.Forms.Design { using System; using System.Collections; using System.ComponentModel; using System.ComponentModel.Design; using System.Windows.Forms.Design.Behavior; using System.Diagnostics; using System.Diagnostics.CodeAnalysis; ////// /// internal class TextBoxBaseDesigner : ControlDesigner { public TextBoxBaseDesigner() { AutoResizeHandles = true; } ////// Provides a designer that can design components /// that extend TextBoxBase. ////// /// Adds a baseline SnapLine to the list of SnapLines related /// to this control. /// public override IList SnapLines { get { ArrayList snapLines = base.SnapLines as ArrayList; int baseline = DesignerUtils.GetTextBaseline(Control, System.Drawing.ContentAlignment.TopLeft); BorderStyle borderStyle = BorderStyle.Fixed3D; PropertyDescriptor prop = TypeDescriptor.GetProperties(Component)["BorderStyle"]; if (prop != null) { borderStyle = (BorderStyle)prop.GetValue(Component); } if (borderStyle == BorderStyle.None) { baseline += 0; } else if (borderStyle == BorderStyle.FixedSingle) { baseline += 2; } else if (borderStyle == BorderStyle.Fixed3D) { baseline += 3; } else { Debug.Fail("Unknown borderstyle"); baseline += 0; } snapLines.Add(new SnapLine(SnapLineType.Baseline, baseline, SnapLinePriority.Medium)); return snapLines; } } private string Text { get { return Control.Text; } set { Control.Text = value; // This fixes bug #48462. If the text box is not wide enough to display all of the text, // then we want to display the first portion at design-time. We can ensure this by // setting the selection to (0, 0). // ((TextBoxBase)Control).Select(0, 0); } } private bool ShouldSerializeText() { return TypeDescriptor.GetProperties(typeof(TextBoxBase))["Text"].ShouldSerializeValue(Component); } [SuppressMessage("Microsoft.Globalization", "CA1303:DoNotPassLiteralsAsLocalizedParameters")] private void ResetText() { Control.Text = ""; } ////// /// We override this so we can clear the text field set by controldesigner. /// public override void InitializeNewComponent(IDictionary defaultValues) { base.InitializeNewComponent(defaultValues); PropertyDescriptor textProp = TypeDescriptor.GetProperties(Component)["Text"]; if (textProp != null && textProp.PropertyType == typeof(string) && !textProp.IsReadOnly && textProp.IsBrowsable) { textProp.SetValue(Component, ""); } } protected override void PreFilterProperties(IDictionary properties) { base.PreFilterProperties(properties); PropertyDescriptor prop; // Handle shadowed properties // string[] shadowProps = new string[] { "Text", }; Attribute[] empty = new Attribute[0]; for (int i = 0; i < shadowProps.Length; i++) { prop = (PropertyDescriptor)properties[shadowProps[i]]; if (prop != null) { properties[shadowProps[i]] = TypeDescriptor.CreateProperty(typeof(TextBoxBaseDesigner), prop, empty); } } } ////// /// Retrieves a set of rules concerning the movement capabilities of a component. /// This should be one or more flags from the SelectionRules class. If no designer /// provides rules for a component, the component will not get any UI services. /// public override SelectionRules SelectionRules { get { SelectionRules rules = base.SelectionRules; object component = Component; rules |= SelectionRules.AllSizeable; PropertyDescriptor prop = TypeDescriptor.GetProperties(component)["Multiline"]; if (prop != null) { Object value = prop.GetValue(component); if (value is bool && (bool)value == false) { PropertyDescriptor propAuto = TypeDescriptor.GetProperties(component)["AutoSize"]; if (propAuto != null) { Object auto = propAuto.GetValue(component); //VSWhidbey #369288 if (auto is bool && (bool)auto == true) { rules &= ~(SelectionRules.TopSizeable | SelectionRules.BottomSizeable); } } } } return rules; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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