Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / ChtmlTextWriter.cs / 1 / ChtmlTextWriter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- // ChtmlTextWriter.cs // namespace System.Web.UI { using System; using System.Collections; using System.Collections.Specialized; using System.IO; using System.Text; using System.Web.UI.WebControls; using System.Web.Util; using System.Globalization; using System.Security.Permissions; ////// [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] public class ChtmlTextWriter : Html32TextWriter { private Hashtable _recognizedAttributes = new Hashtable(StringComparer.CurrentCultureIgnoreCase); private Hashtable _suppressedAttributes = new Hashtable(StringComparer.CurrentCultureIgnoreCase); private Hashtable _globalSuppressedAttributes = new Hashtable(StringComparer.CurrentCultureIgnoreCase); public ChtmlTextWriter(TextWriter writer) : this(writer, DefaultTabString) { } public ChtmlTextWriter(TextWriter writer, string tabString) : base(writer, tabString) { _globalSuppressedAttributes["onclick"] = true; _globalSuppressedAttributes["ondblclick"] = true; _globalSuppressedAttributes["onmousedown"] = true; _globalSuppressedAttributes["onmouseup"] = true; _globalSuppressedAttributes["onmouseover"] = true; _globalSuppressedAttributes["onmousemove"] = true; _globalSuppressedAttributes["onmouseout"] = true; _globalSuppressedAttributes["onkeypress"] = true; _globalSuppressedAttributes["onkeydown"] = true; _globalSuppressedAttributes["onkeyup"] = true; // Supress certain element attribute pairs that can happen when Html32TextWriter performs the div table // substitution. RemoveRecognizedAttributeInternal("div", "accesskey"); // VSWhidbey 270254 RemoveRecognizedAttributeInternal("div", "cellspacing"); RemoveRecognizedAttributeInternal("div", "cellpadding"); RemoveRecognizedAttributeInternal("div", "gridlines"); RemoveRecognizedAttributeInternal("div", "rules"); RemoveRecognizedAttributeInternal("span", "cellspacing"); RemoveRecognizedAttributeInternal("span", "cellpadding"); RemoveRecognizedAttributeInternal("span", "gridlines"); RemoveRecognizedAttributeInternal("span", "rules"); } ///[To be supplied.] ////// public virtual void AddRecognizedAttribute(string elementName, string attributeName) { Hashtable eltAttributes = (Hashtable) _recognizedAttributes[elementName]; if (eltAttributes == null) { eltAttributes = new Hashtable(StringComparer.CurrentCultureIgnoreCase); _recognizedAttributes[elementName] = eltAttributes; } eltAttributes.Add(attributeName, true); } ///[To be supplied.] ////// Override to filter out unnecessary attributes /// protected override bool OnAttributeRender(string name, string value, HtmlTextWriterAttribute key) { Hashtable elementRecognizedAttributes = (Hashtable)_recognizedAttributes[TagName]; if (elementRecognizedAttributes != null && elementRecognizedAttributes[name] != null) { return true; } if (_globalSuppressedAttributes[name] != null) { return false; } Hashtable elementSuppressedAttributes = (Hashtable)_suppressedAttributes[TagName]; if (elementSuppressedAttributes != null && elementSuppressedAttributes[name] != null) { return false; } return true; } protected override bool OnStyleAttributeRender(string name,string value, HtmlTextWriterStyle key) { if (key == HtmlTextWriterStyle.TextDecoration) { if (StringUtil.EqualsIgnoreCase("line-through", value)) { return false; } } return base.OnStyleAttributeRender(name, value, key); } protected override bool OnTagRender(string name, HtmlTextWriterTag key) { return base.OnTagRender(name, key) && key != HtmlTextWriterTag.Span; } ////// public virtual void RemoveRecognizedAttribute(string elementName, string attributeName) { RemoveRecognizedAttributeInternal(elementName, attributeName); } private void RemoveRecognizedAttributeInternal(string elementName, string attributeName) { // Since recognized attributes have precedence, we need to do two operations: add this attribute // to the suppressed list, and remove it from the recognized list. Hashtable eltAttributes = (Hashtable) _suppressedAttributes[elementName]; if (eltAttributes == null) { eltAttributes = new Hashtable(StringComparer.CurrentCultureIgnoreCase); _suppressedAttributes[elementName] = eltAttributes; } eltAttributes.Add(attributeName, true); eltAttributes = (Hashtable)_recognizedAttributes[elementName]; if (eltAttributes == null) { eltAttributes = new Hashtable(StringComparer.CurrentCultureIgnoreCase); _recognizedAttributes[elementName] = eltAttributes; } // Note: Hashtable::Remove silently continues if the key does not exist. eltAttributes.Remove(attributeName); } public override void WriteBreak() { Write("[To be supplied.] ///
"); } public override void WriteEncodedText(String text) { if (null == text || text.Length == 0) { return; } int length = text.Length; int start = -1; for(int pos = 0; pos < length; pos++) { int ch = text[pos]; if(ch > 160 && ch < 256) { if(start != -1) { base.WriteEncodedText(text.Substring(start, pos - start)); start = -1; } base.Write(text[pos]); } else { if(start == -1) { start = pos; } } } if(start != -1) { if(start == 0) { base.WriteEncodedText(text); } else { base.WriteEncodedText(text.Substring(start, length - start)); } } } protected Hashtable RecognizedAttributes { get { return _recognizedAttributes; } } protected Hashtable SuppressedAttributes { get { return _suppressedAttributes; } } protected Hashtable GlobalSuppressedAttributes { get { return _globalSuppressedAttributes; } } } }
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- TemplateField.cs
- RenamedEventArgs.cs
- SqlClientFactory.cs
- FastEncoder.cs
- Rfc2898DeriveBytes.cs
- HtmlInputImage.cs
- EmissiveMaterial.cs
- BlurEffect.cs
- BoundField.cs
- DriveInfo.cs
- RegexWriter.cs
- ToolStripDropDown.cs
- DebugViewWriter.cs
- DataControlFieldCell.cs
- cache.cs
- CustomExpressionEventArgs.cs
- ProcessRequestArgs.cs
- BitmapDecoder.cs
- TextTreeDeleteContentUndoUnit.cs
- ConsoleCancelEventArgs.cs
- BitmapEffectCollection.cs
- XpsFixedDocumentSequenceReaderWriter.cs
- WindowsPen.cs
- Task.cs
- _Events.cs
- NetPipeSection.cs
- DispatcherSynchronizationContext.cs
- Query.cs
- CodeAttributeArgumentCollection.cs
- DataTemplateKey.cs
- TransactionManager.cs
- OutputCacheSection.cs
- DownloadProgressEventArgs.cs
- PartManifestEntry.cs
- BasicViewGenerator.cs
- WeakRefEnumerator.cs
- UidManager.cs
- PolicyManager.cs
- NetworkInterface.cs
- SelectedCellsChangedEventArgs.cs
- EntityAdapter.cs
- XmlAtomicValue.cs
- Configuration.cs
- EmbeddedMailObject.cs
- HtmlImage.cs
- DataGridCommandEventArgs.cs
- ECDiffieHellmanCngPublicKey.cs
- Label.cs
- PenThreadWorker.cs
- CommandCollectionEditor.cs
- TextDecorationCollectionConverter.cs
- DesignerTransactionCloseEvent.cs
- EditBehavior.cs
- PtsHelper.cs
- UiaCoreTypesApi.cs
- TextEditor.cs
- WorkflowInstanceExtensionProvider.cs
- CanonicalFormWriter.cs
- Transform3DCollection.cs
- Walker.cs
- CollectionChangeEventArgs.cs
- CurrentChangingEventArgs.cs
- AsyncPostBackErrorEventArgs.cs
- WebPartZoneBaseDesigner.cs
- LinkClickEvent.cs
- StateManagedCollection.cs
- AppSettingsSection.cs
- DropTarget.cs
- RenderOptions.cs
- ObjectStateEntryDbDataRecord.cs
- HandleCollector.cs
- SHA1CryptoServiceProvider.cs
- TableItemPatternIdentifiers.cs
- MarkupExtensionParser.cs
- Version.cs
- GenericTypeParameterConverter.cs
- TableItemPatternIdentifiers.cs
- WebPartZone.cs
- MailAddress.cs
- ResourceProviderFactory.cs
- DayRenderEvent.cs
- FolderLevelBuildProviderCollection.cs
- CustomMenuItemCollection.cs
- HitTestParameters.cs
- FrameworkContentElementAutomationPeer.cs
- DataDocumentXPathNavigator.cs
- VisualBrush.cs
- EtwTrace.cs
- MultiAsyncResult.cs
- uribuilder.cs
- HttpResponseBase.cs
- ImageIndexConverter.cs
- PropertyFilter.cs
- HostUtils.cs
- UpdateRecord.cs
- RequestCache.cs
- CornerRadiusConverter.cs
- PageAdapter.cs
- SmtpFailedRecipientException.cs
- SyndicationSerializer.cs