Code:
/ DotNET / DotNET / 8.0 / 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
- XmlDataLoader.cs
- ProcessHostConfigUtils.cs
- BridgeDataReader.cs
- TextTreeInsertUndoUnit.cs
- ImplicitInputBrush.cs
- KnownIds.cs
- FolderLevelBuildProviderAppliesToAttribute.cs
- QuaternionIndependentAnimationStorage.cs
- ContentTextAutomationPeer.cs
- MgmtConfigurationRecord.cs
- UInt64.cs
- ListBindingConverter.cs
- CodeAttachEventStatement.cs
- Run.cs
- CompModSwitches.cs
- DataPagerFieldCollection.cs
- OracleInfoMessageEventArgs.cs
- Pkcs9Attribute.cs
- ColorBuilder.cs
- EventItfInfo.cs
- QuaternionRotation3D.cs
- XmlUtf8RawTextWriter.cs
- CommonObjectSecurity.cs
- DataTemplateSelector.cs
- LexicalChunk.cs
- XslException.cs
- oledbmetadatacolumnnames.cs
- HyperLinkStyle.cs
- XsltConvert.cs
- OleDbException.cs
- TransportSecurityHelpers.cs
- DataGridViewIntLinkedList.cs
- ImageSource.cs
- TrackingServices.cs
- HybridDictionary.cs
- MDIWindowDialog.cs
- ScriptReference.cs
- Subtract.cs
- XPathParser.cs
- CFGGrammar.cs
- EventLogger.cs
- AccessorTable.cs
- TemplateBindingExtensionConverter.cs
- DataRelation.cs
- ProgressiveCrcCalculatingStream.cs
- COM2Properties.cs
- XmlSerializerObjectSerializer.cs
- X509ServiceCertificateAuthentication.cs
- MSHTMLHost.cs
- BookmarkUndoUnit.cs
- BindingMAnagerBase.cs
- ListSourceHelper.cs
- EntityDataSourceWrapperCollection.cs
- NativeMethods.cs
- NameValuePermission.cs
- PlatformCulture.cs
- BamlRecordWriter.cs
- RegexFCD.cs
- TransformerTypeCollection.cs
- RtfToken.cs
- Privilege.cs
- OutputCacheModule.cs
- BindingExpression.cs
- OracleRowUpdatedEventArgs.cs
- BinaryObjectReader.cs
- ZipIOZip64EndOfCentralDirectoryBlock.cs
- GlyphShapingProperties.cs
- ToolZone.cs
- GeneralTransform.cs
- basevalidator.cs
- XmlJsonReader.cs
- SweepDirectionValidation.cs
- Context.cs
- XappLauncher.cs
- HWStack.cs
- WebEventTraceProvider.cs
- WeakRefEnumerator.cs
- BooleanAnimationBase.cs
- ServiceSettingsResponseInfo.cs
- ThrowOnMultipleAssignment.cs
- SqlInfoMessageEvent.cs
- TreeChangeInfo.cs
- EntityDataSourceWrapperPropertyDescriptor.cs
- CodeTypeConstructor.cs
- Exception.cs
- CalloutQueueItem.cs
- FaultCallbackWrapper.cs
- SqlConnectionManager.cs
- WindowsFont.cs
- EndpointDiscoveryMetadata.cs
- DataGridViewCellErrorTextNeededEventArgs.cs
- Italic.cs
- LocatorGroup.cs
- ChangeDirector.cs
- ConfigurationManagerInternal.cs
- CodeFieldReferenceExpression.cs
- Triplet.cs
- SystemSounds.cs
- SizeValueSerializer.cs
- Inline.cs