445 lines
13 KiB
C#
445 lines
13 KiB
C#
//
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// System.Web.UI.WebControls.TextBox.cs
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//
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// Authors:
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// Ben Maurer (bmaurer@novell.com)
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//
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// (C) 2005 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System.Collections.Specialized;
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using System.ComponentModel;
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using System.Security.Permissions;
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using System.Text;
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namespace System.Web.UI.WebControls {
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// CAS
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[AspNetHostingPermissionAttribute (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
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[AspNetHostingPermissionAttribute (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
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// attributes
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[DataBindingHandler ("System.Web.UI.Design.TextDataBindingHandler, " + Consts.AssemblySystem_Design)]
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[DefaultEvent ("TextChanged")]
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[DefaultProperty ("Text")]
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[ValidationProperty ("Text")]
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[ControlBuilder (typeof (TextBoxControlBuilder))]
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[Designer ("System.Web.UI.Design.WebControls.PreviewControlDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
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[ParseChildren (true, "Text")]
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[ControlValueProperty ("Text", null)]
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[SupportsEventValidation]
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public class TextBox : WebControl, IPostBackDataHandler
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, IEditableTextControl, ITextControl
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{
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readonly static string [] VCardValues = new string [] {
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null,
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null,
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"vCard.Cellular",
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"vCard.Company",
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"vCard.Department",
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"vCard.DisplayName",
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"vCard.Email",
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"vCard.FirstName",
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"vCard.Gender",
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"vCard.Home.City",
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"HomeCountry",
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"vCard.Home.Fax",
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"vCard.Home.Phone",
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"vCard.Home.State",
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"vCard.Home.StreetAddress",
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"vCard.Home.ZipCode",
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"vCard.Home.page",
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"vCard.JobTitle",
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"vCard.LastName",
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"vCard.MiddleName",
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"vCard.Notes",
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"vCard.Office",
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"vCard.Pager",
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"vCard.Business.City",
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"BusinessCountry",
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"vCard.Business.Fax",
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"vCard.Business.Phone",
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"vCard.Business.State",
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"vCard.Business.StreetAddress",
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"vCard.Business.Url",
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"vCard.Business.ZipCode",
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"search"
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};
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protected override void AddAttributesToRender (HtmlTextWriter writer)
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{
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Page page = Page;
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if (page != null)
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page.VerifyRenderingInServerForm (this);
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switch (TextMode) {
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case TextBoxMode.MultiLine:
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if (Columns != 0)
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writer.AddAttribute (HtmlTextWriterAttribute.Cols, Columns.ToString (), false);
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else
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writer.AddAttribute (HtmlTextWriterAttribute.Cols, "20", false);
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if (Rows != 0)
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writer.AddAttribute (HtmlTextWriterAttribute.Rows, Rows.ToString (), false);
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else
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writer.AddAttribute (HtmlTextWriterAttribute.Rows, "2", false);
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if (!Wrap)
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writer.AddAttribute (HtmlTextWriterAttribute.Wrap, "off", false);
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break;
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case TextBoxMode.SingleLine:
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case TextBoxMode.Password:
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if (TextMode == TextBoxMode.Password)
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writer.AddAttribute (HtmlTextWriterAttribute.Type, "password", false);
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else {
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writer.AddAttribute (HtmlTextWriterAttribute.Type, "text", false);
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if (Text.Length > 0)
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writer.AddAttribute (HtmlTextWriterAttribute.Value, Text);
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}
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if (Columns != 0)
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writer.AddAttribute (HtmlTextWriterAttribute.Size, Columns.ToString (), false);
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if (MaxLength != 0)
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writer.AddAttribute (HtmlTextWriterAttribute.Maxlength, MaxLength.ToString (), false);
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if (AutoCompleteType != AutoCompleteType.None && TextMode == TextBoxMode.SingleLine)
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if (AutoCompleteType != AutoCompleteType.Disabled)
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writer.AddAttribute (HtmlTextWriterAttribute.VCardName, VCardValues [(int) AutoCompleteType]);
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else
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writer.AddAttribute (HtmlTextWriterAttribute.AutoComplete, "off", false);
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break;
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}
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if (AutoPostBack) {
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writer.AddAttribute ("onkeypress", "if (WebForm_TextBoxKeyHandler(event) == false) return false;", false);
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if (page != null) {
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string onchange = page.ClientScript.GetPostBackEventReference (GetPostBackOptions (), true);
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onchange = String.Concat ("setTimeout('", onchange.Replace ("\\", "\\\\").Replace ("'", "\\'"), "', 0)");
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writer.AddAttribute (HtmlTextWriterAttribute.Onchange, BuildScriptAttribute ("onchange", onchange));
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}
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} else if (page != null)
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page.ClientScript.RegisterForEventValidation (UniqueID, String.Empty);
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if (ReadOnly)
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writer.AddAttribute (HtmlTextWriterAttribute.ReadOnly, "ReadOnly", false);
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writer.AddAttribute (HtmlTextWriterAttribute.Name, UniqueID);
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base.AddAttributesToRender (writer);
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}
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protected override void AddParsedSubObject (object obj)
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{
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LiteralControl l = obj as LiteralControl;
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if (l != null)
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Text = l.Text;
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}
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protected internal
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override void OnPreRender (EventArgs e)
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{
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// What do i do here?
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base.OnPreRender (e);
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if (AutoPostBack) {
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RegisterKeyHandlerClientScript ();
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}
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Page page = Page;
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if (page != null && IsEnabled)
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page.RegisterEnabledControl (this);
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}
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protected internal
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override void Render (HtmlTextWriter writer)
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{
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// Why didn't msft just override RenderContents!?
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RenderBeginTag (writer);
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if (TextMode == TextBoxMode.MultiLine) {
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writer.WriteLine ();
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HttpUtility.HtmlEncode (Text, writer);
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}
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RenderEndTag (writer);
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}
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protected virtual
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bool LoadPostData (string postDataKey, NameValueCollection postCollection)
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{
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ValidateEvent (postDataKey, String.Empty);
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if (Text != postCollection [postDataKey]) {
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Text = postCollection [postDataKey];
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return true;
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}
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return false;
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}
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protected virtual
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void RaisePostDataChangedEvent ()
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{
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if (CausesValidation)
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Page.Validate (ValidationGroup);
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OnTextChanged (EventArgs.Empty);
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}
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bool IPostBackDataHandler.LoadPostData (string postDataKey, NameValueCollection postCollection)
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{
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return LoadPostData (postDataKey, postCollection);
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}
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void IPostBackDataHandler.RaisePostDataChangedEvent ()
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{
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RaisePostDataChangedEvent ();
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}
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protected override object SaveViewState ()
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{
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if (TextMode == TextBoxMode.Password)
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ViewState.SetItemDirty ("Text", false);
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return base.SaveViewState ();
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}
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PostBackOptions GetPostBackOptions () {
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PostBackOptions options = new PostBackOptions (this);
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options.ActionUrl = null;
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options.ValidationGroup = null;
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options.Argument = String.Empty;
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options.RequiresJavaScriptProtocol = false;
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options.ClientSubmit = true;
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Page page = Page;
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options.PerformValidation = CausesValidation && page != null && page.AreValidatorsUplevel (ValidationGroup);
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if (options.PerformValidation)
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options.ValidationGroup = ValidationGroup;
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return options;
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}
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void RegisterKeyHandlerClientScript () {
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if (!Page.ClientScript.IsClientScriptBlockRegistered (typeof (TextBox), "KeyHandler")) {
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StringBuilder script=new StringBuilder();
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script.AppendLine ("function WebForm_TextBoxKeyHandler(event) {");
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script.AppendLine ("\tvar target = event.target;");
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script.AppendLine ("\tif ((target == null) || (typeof(target) == \"undefined\")) target = event.srcElement;");
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script.AppendLine ("\tif (event.keyCode == 13) {");
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script.AppendLine ("\t\tif ((typeof(target) != \"undefined\") && (target != null)) {");
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script.AppendLine ("\t\t\tif (typeof(target.onchange) != \"undefined\") {");
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script.AppendLine ("\t\t\t\ttarget.onchange();");
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script.AppendLine ("\t\t\t\tevent.cancelBubble = true;");
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script.AppendLine ("\t\t\t\tif (event.stopPropagation) event.stopPropagation();");
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script.AppendLine ("\t\t\t\treturn false;");
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script.AppendLine ("\t\t\t}");
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script.AppendLine ("\t\t}");
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script.AppendLine ("\t}");
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script.AppendLine ("\treturn true;");
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script.AppendLine ("}");
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Page.ClientScript.RegisterClientScriptBlock (typeof (TextBox), "KeyHandler", script.ToString(), true);
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}
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}
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[DefaultValue (AutoCompleteType.None)]
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[Themeable (false)]
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public virtual AutoCompleteType AutoCompleteType
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{
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get {
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object o = ViewState ["AutoCompleteType"];
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return o != null ? (AutoCompleteType) o : AutoCompleteType.None;
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}
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set {
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ViewState ["AutoCompleteType"] = value;
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}
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}
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[DefaultValue(false)]
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[Themeable (false)]
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[WebSysDescription ("")]
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[WebCategory ("Behavior")]
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public virtual bool AutoPostBack {
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get {
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return ViewState.GetBool ("AutoPostBack", false);
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}
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set {
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ViewState ["AutoPostBack"] = value;
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}
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}
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[DefaultValue (false)]
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[Themeable (false)]
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public virtual bool CausesValidation
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{
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get {
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return ViewState.GetBool ("CausesValidation", false);
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}
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set {
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ViewState["CausesValidation"] = value;
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}
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}
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[DefaultValue(0)]
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[WebSysDescription ("")]
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[WebCategory ("Appearance")]
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public virtual int Columns {
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get {
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return ViewState.GetInt ("Columns", 0);
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}
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set {
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if (value < 0)
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throw new ArgumentOutOfRangeException("value", "Columns value has to be 0 for 'not set' or bigger than 0.");
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else
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ViewState ["Columns"] = value;
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}
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}
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[DefaultValue(0)]
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[Themeable (false)]
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[WebSysDescription ("")]
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[WebCategory ("Behavior")]
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public virtual int MaxLength {
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get {
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return ViewState.GetInt ("MaxLength", 0);
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}
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set {
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if (value < 0)
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throw new ArgumentOutOfRangeException("value", "MaxLength value has to be 0 for 'not set' or bigger than 0.");
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else
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ViewState ["MaxLength"] = value;
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}
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}
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[Bindable(true)]
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[DefaultValue(false)]
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[Themeable (false)]
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[WebSysDescription ("")]
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[WebCategory ("Behavior")]
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public virtual bool ReadOnly {
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get {
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return ViewState.GetBool ("ReadOnly", false);
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}
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set {
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ViewState ["ReadOnly"] = value;
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}
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}
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[DefaultValue(0)]
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[Themeable (false)]
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[WebSysDescription ("")]
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[WebCategory ("Behavior")]
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public virtual int Rows {
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get {
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return ViewState.GetInt ("Rows", 0);
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}
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set {
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if (value < 0)
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throw new ArgumentOutOfRangeException("value", "Rows value has to be 0 for 'not set' or bigger than 0.");
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else
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ViewState ["Rows"] = value;
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}
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}
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#if HAVE_CONTROL_ADAPTERS
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protected virtual new
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#else
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protected override
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#endif
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HtmlTextWriterTag TagKey {
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get {
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return TextMode == TextBoxMode.MultiLine ? HtmlTextWriterTag.Textarea : HtmlTextWriterTag.Input;
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}
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}
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[Bindable(true, BindingDirection.TwoWay)]
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[DefaultValue("")]
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[PersistenceMode(PersistenceMode.EncodedInnerDefaultProperty)]
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[Localizable (true)]
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[Editor ("System.ComponentModel.Design.MultilineStringEditor," + Consts.AssemblySystem_Design, "System.Drawing.Design.UITypeEditor, " + Consts.AssemblySystem_Drawing)]
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[WebSysDescription ("")]
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[WebCategory ("Appearance")]
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public virtual string Text {
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get {
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return ViewState.GetString ("Text", "");
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}
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set {
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ViewState ["Text"] = value;
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}
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}
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[DefaultValue(TextBoxMode.SingleLine)]
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[Themeable (false)]
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[WebSysDescription ("")]
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[WebCategory ("Behavior")]
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public virtual TextBoxMode TextMode {
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get {
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return (TextBoxMode) ViewState.GetInt ("TextMode", (int) TextBoxMode.SingleLine);
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}
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set {
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ViewState ["TextMode"] = (int) value;
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}
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}
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[Themeable (false)]
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[DefaultValue ("")]
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public virtual string ValidationGroup
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{
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get {
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return ViewState.GetString ("ValidationGroup", "");
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}
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set {
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ViewState ["ValidationGroup"] = value;
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}
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}
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[DefaultValue(true)]
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[WebSysDescription ("")]
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[WebCategory ("Layout")]
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public virtual bool Wrap {
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get {
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return ViewState.GetBool ("Wrap", true);
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}
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set {
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ViewState ["Wrap"] = value;
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}
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}
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protected virtual void OnTextChanged (EventArgs e)
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{
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EventHandler h = (EventHandler) Events [TextChangedEvent];
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if (h != null)
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h (this, e);
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}
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static readonly object TextChangedEvent = new object ();
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[WebSysDescription ("")]
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[WebCategory ("Action")]
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public event EventHandler TextChanged {
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add { Events.AddHandler (TextChangedEvent, value); }
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remove { Events.RemoveHandler (TextChangedEvent, value); }
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}
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}
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}
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