138 lines
3.8 KiB
C#
138 lines
3.8 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="UnsettableComboBox.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//------------------------------------------------------------------------------
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namespace System.Web.UI.Design.MobileControls.Util
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{
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using System;
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using System.Collections;
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using System.ComponentModel;
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using System.Diagnostics;
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using System.Drawing;
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using System.Windows.Forms;
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// Standard combobox with a "Not Set" item as the first item in its dropdown.
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// It also automatically blanks out the "Not Set" item on losing focus.
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[
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System.Security.Permissions.SecurityPermission(System.Security.Permissions.SecurityAction.Demand,
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Flags=System.Security.Permissions.SecurityPermissionFlag.UnmanagedCode)
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]
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[Obsolete("The System.Web.Mobile.dll assembly has been deprecated and should no longer be used. For information about how to develop ASP.NET mobile applications, see http://go.microsoft.com/fwlink/?LinkId=157231.")]
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internal class UnsettableComboBox : ComboBox
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{
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private String notSetText;
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private String notSetCompactText;
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internal UnsettableComboBox()
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{
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notSetText = SR.GetString(SR.UnsettableComboBox_NotSetText);
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notSetCompactText = SR.GetString(SR.UnsettableComboBox_NotSetCompactText);
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}
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internal String NotSetText
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{
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get
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{
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return notSetText;
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}
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set
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{
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notSetText = value;
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}
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}
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internal String NotSetCompactText
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{
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get
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{
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return notSetCompactText;
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}
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set
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{
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notSetCompactText = value;
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}
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}
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public override String Text
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{
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get
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{
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// handle DropDown styles in Templating Options dialog
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// if (this.SelectedIndex == 0) || (this.SelectedIndex == -1))
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if (this.SelectedIndex == 0)
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{
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return String.Empty;
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}
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else
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{
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return base.Text;
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}
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}
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set
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{
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if (value == notSetCompactText)
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{
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base.Text = String.Empty;
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}
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else
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{
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base.Text = value;
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}
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}
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}
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internal void AddItem(Object item)
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{
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EnsureNotSetItem();
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Items.Add(item);
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}
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internal void EnsureNotSetItem()
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{
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if (Items.Count == 0)
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{
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Items.Add(notSetText);
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}
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}
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#if UNUSED_CODE
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internal bool IsSet()
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{
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return SelectedIndex > 0;
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}
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#endif
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protected override void OnLostFocus(EventArgs e)
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{
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base.OnLostFocus(e);
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if (SelectedIndex == 0)
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{
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SelectedIndex = -1;
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}
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}
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protected override void SetItemsCore(IList values)
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{
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Items.Clear();
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if (!DesignMode)
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{
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Items.Add(notSetText);
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}
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// Unfortunately. the interfaces between SetItemsCore and
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// AddItemsCore are mismatched as of 3106.
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ArrayList items = new ArrayList();
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foreach(Object item in values)
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{
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items.Add(item);
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}
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base.AddItemsCore(items.ToArray());
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}
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}
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}
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