Code:
/ FXUpdate3074 / FXUpdate3074 / 1.1 / DEVDIV / depot / DevDiv / releases / whidbey / QFE / ndp / fx / src / xsp / System / Web / UI / CssStyleCollection.cs / 1 / CssStyleCollection.cs
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Web.UI {
using System.IO;
using System.Collections;
using System.Collections.Specialized;
using System.Reflection;
using System.Web.UI;
using System.Text;
using System.Text.RegularExpressions;
using System.Security.Permissions;
///
///
/// The
///
[AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)]
public sealed class CssStyleCollection {
private static readonly Regex _styleAttribRegex = new Regex(
"\\G(\\s*(;\\s*)*" + // match leading semicolons and spaces
"(?[^:]+?)" + // match stylename - chars up to the semicolon
"\\s*:\\s*" + // spaces, then the colon, then more spaces
"(?[^;]*)" + // now match styleval
")*\\s*(;\\s*)*$", // match a trailing semicolon and trailing spaces
RegexOptions.Singleline |
RegexOptions.Multiline |
RegexOptions.ExplicitCapture);
private StateBag _state;
private string _style;
private IDictionary _table;
private IDictionary _intTable;
internal CssStyleCollection() : this(null) {
}
/*
* Constructs an CssStyleCollection given a StateBag.
*/
internal CssStyleCollection(StateBag state) {
_state = state;
}
/*
* Automatically adds new keys.
*/
///
///
/// Gets or sets a specified CSS value.
///
///
public string this[string key] {
get {
if (_table == null)
ParseString();
string value = (string)_table[key];
if (value == null) {
HtmlTextWriterStyle style = CssTextWriter.GetStyleKey(key);
if (style != (HtmlTextWriterStyle)(-1)) {
value = this[style];
}
}
return value;
}
set {
Add(key, value);
}
}
///
/// Gets or sets the specified known CSS value.
///
public string this[HtmlTextWriterStyle key] {
get {
if (_intTable == null) {
return null;
}
return (string)_intTable[(int)key];
}
set {
Add(key, value);
}
}
/*
* Returns a collection of keys.
*/
///
///
/// Gets a collection of keys to all the styles in the
///
///
public ICollection Keys {
get {
if (_table == null)
ParseString();
if (_intTable != null) {
// combine the keys into a single table. Note that to preserve existing
// behavior, we convert enum values into strings to maintain a homogeneous collection.
string[] keys = new string[_table.Count + _intTable.Count];
int i = 0;
foreach (string s in _table.Keys) {
keys[i] = s;
i++;
}
foreach (HtmlTextWriterStyle style in _intTable.Keys) {
keys[i] = CssTextWriter.GetStyleName(style);
i++;
}
return keys;
}
return _table.Keys;
}
}
///
///
/// Gets the number of items in the
///
public int Count {
get {
if (_table == null)
ParseString();
return _table.Count + ((_intTable != null) ? _intTable.Count : 0);
}
}
public string Value {
get {
if (_state == null) {
if (_style == null) {
_style = BuildString();
}
return _style;
}
return(string)_state["style"];
}
set {
if (_state == null) {
_style = value;
}
else {
_state["style"] = value;
}
_table = null;
}
}
///
///
/// Adds a style to the CssStyleCollection.
///
///
public void Add(string key, string value) {
if (String.IsNullOrEmpty(key)) {
throw new ArgumentNullException("key");
}
if (_table == null)
ParseString();
_table[key] = value;
if (_intTable != null) {
// Remove from the other table to avoid duplicates.
HtmlTextWriterStyle style = CssTextWriter.GetStyleKey(key);
if (style != (HtmlTextWriterStyle)(-1)) {
_intTable.Remove(style);
}
}
if (_state != null) {
// keep style attribute synchronized
_state["style"] = BuildString();
}
_style = null;
}
public void Add(HtmlTextWriterStyle key, string value) {
if (_intTable == null) {
_intTable = new HybridDictionary();
}
_intTable[(int)key] = value;
string name = CssTextWriter.GetStyleName(key);
if (name.Length != 0) {
// Remove from the other table to avoid duplicates.
if (_table == null)
ParseString();
_table.Remove(name);
}
if (_state != null) {
// keep style attribute synchronized
_state["style"] = BuildString();
}
_style = null;
}
///
///
/// Removes a style from the
///
public void Remove(string key) {
if (_table == null)
ParseString();
if (_table[key] != null) {
_table.Remove(key);
if (_state != null) {
// keep style attribute synchronized
_state["style"] = BuildString();
}
_style = null;
}
}
public void Remove(HtmlTextWriterStyle key) {
if (_intTable == null) {
return;
}
_intTable.Remove((int)key);
if (_state != null) {
// keep style attribute synchronized
_state["style"] = BuildString();
}
_style = null;
}
///
///
/// Removes all styles from the
///
public void Clear() {
_table = null;
_intTable = null;
if (_state != null) {
_state.Remove("style");
}
_style = null;
}
/* BuildString
* Form the style string from data contained in the
* hash table
*/
private string BuildString() {
// if the tables are null, there is nothing to build
if (((_table == null) || (_table.Count == 0)) &&
((_intTable == null) || (_intTable.Count == 0))) {
return null;
}
StringWriter sw = new StringWriter();
CssTextWriter writer = new CssTextWriter(sw);
Render(writer);
return sw.ToString();
}
/* ParseString
* Parse the style string and fill the hash table with
* corresponding values.
*/
private void ParseString() {
// create a case-insensitive dictionary
_table = new HybridDictionary(true);
string s = (_state == null) ? _style : (string)_state["style"];
if (s != null) {
Match match;
if ((match = _styleAttribRegex.Match( s, 0)).Success) {
CaptureCollection stylenames = match.Groups["stylename"].Captures;
CaptureCollection stylevalues = match.Groups["styleval"].Captures;
for (int i = 0; i < stylenames.Count; i++) {
String styleName = stylenames[i].ToString();
String styleValue = stylevalues[i].ToString();
_table[styleName] = styleValue;
}
}
}
}
///
/// Render out the attribute collection into a CSS TextWriter. This
/// effectively renders the value of an inline style attribute.
///
internal void Render(CssTextWriter writer) {
if (_table != null && _table.Count > 0) {
foreach (DictionaryEntry entry in _table) {
writer.WriteAttribute((string)entry.Key, (string)entry.Value);
}
}
if (_intTable != null && _intTable.Count > 0) {
foreach (DictionaryEntry entry in _intTable) {
writer.WriteAttribute((HtmlTextWriterStyle)entry.Key, (string)entry.Value);
}
}
}
///
/// Render out the attribute collection into a CSS TextWriter. This
/// effectively renders the value of an inline style attribute.
/// Used by a Style object to render out its CSS attributes into an HtmlTextWriter.
///
internal void Render(HtmlTextWriter writer) {
if (_table != null && _table.Count > 0) {
foreach (DictionaryEntry entry in _table) {
writer.AddStyleAttribute((string)entry.Key, (string)entry.Value);
}
}
if (_intTable != null && _intTable.Count > 0) {
foreach (DictionaryEntry entry in _intTable) {
writer.AddStyleAttribute((HtmlTextWriterStyle)entry.Key, (string)entry.Value);
}
}
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Web.UI {
using System.IO;
using System.Collections;
using System.Collections.Specialized;
using System.Reflection;
using System.Web.UI;
using System.Text;
using System.Text.RegularExpressions;
using System.Security.Permissions;
///
///
/// The
///
[AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)]
public sealed class CssStyleCollection {
private static readonly Regex _styleAttribRegex = new Regex(
"\\G(\\s*(;\\s*)*" + // match leading semicolons and spaces
"(?[^:]+?)" + // match stylename - chars up to the semicolon
"\\s*:\\s*" + // spaces, then the colon, then more spaces
"(?[^;]*)" + // now match styleval
")*\\s*(;\\s*)*$", // match a trailing semicolon and trailing spaces
RegexOptions.Singleline |
RegexOptions.Multiline |
RegexOptions.ExplicitCapture);
private StateBag _state;
private string _style;
private IDictionary _table;
private IDictionary _intTable;
internal CssStyleCollection() : this(null) {
}
/*
* Constructs an CssStyleCollection given a StateBag.
*/
internal CssStyleCollection(StateBag state) {
_state = state;
}
/*
* Automatically adds new keys.
*/
///
///
/// Gets or sets a specified CSS value.
///
///
public string this[string key] {
get {
if (_table == null)
ParseString();
string value = (string)_table[key];
if (value == null) {
HtmlTextWriterStyle style = CssTextWriter.GetStyleKey(key);
if (style != (HtmlTextWriterStyle)(-1)) {
value = this[style];
}
}
return value;
}
set {
Add(key, value);
}
}
///
/// Gets or sets the specified known CSS value.
///
public string this[HtmlTextWriterStyle key] {
get {
if (_intTable == null) {
return null;
}
return (string)_intTable[(int)key];
}
set {
Add(key, value);
}
}
/*
* Returns a collection of keys.
*/
///
///
/// Gets a collection of keys to all the styles in the
///
///
public ICollection Keys {
get {
if (_table == null)
ParseString();
if (_intTable != null) {
// combine the keys into a single table. Note that to preserve existing
// behavior, we convert enum values into strings to maintain a homogeneous collection.
string[] keys = new string[_table.Count + _intTable.Count];
int i = 0;
foreach (string s in _table.Keys) {
keys[i] = s;
i++;
}
foreach (HtmlTextWriterStyle style in _intTable.Keys) {
keys[i] = CssTextWriter.GetStyleName(style);
i++;
}
return keys;
}
return _table.Keys;
}
}
///
///
/// Gets the number of items in the
///
public int Count {
get {
if (_table == null)
ParseString();
return _table.Count + ((_intTable != null) ? _intTable.Count : 0);
}
}
public string Value {
get {
if (_state == null) {
if (_style == null) {
_style = BuildString();
}
return _style;
}
return(string)_state["style"];
}
set {
if (_state == null) {
_style = value;
}
else {
_state["style"] = value;
}
_table = null;
}
}
///
///
/// Adds a style to the CssStyleCollection.
///
///
public void Add(string key, string value) {
if (String.IsNullOrEmpty(key)) {
throw new ArgumentNullException("key");
}
if (_table == null)
ParseString();
_table[key] = value;
if (_intTable != null) {
// Remove from the other table to avoid duplicates.
HtmlTextWriterStyle style = CssTextWriter.GetStyleKey(key);
if (style != (HtmlTextWriterStyle)(-1)) {
_intTable.Remove(style);
}
}
if (_state != null) {
// keep style attribute synchronized
_state["style"] = BuildString();
}
_style = null;
}
public void Add(HtmlTextWriterStyle key, string value) {
if (_intTable == null) {
_intTable = new HybridDictionary();
}
_intTable[(int)key] = value;
string name = CssTextWriter.GetStyleName(key);
if (name.Length != 0) {
// Remove from the other table to avoid duplicates.
if (_table == null)
ParseString();
_table.Remove(name);
}
if (_state != null) {
// keep style attribute synchronized
_state["style"] = BuildString();
}
_style = null;
}
///
///
/// Removes a style from the
///
public void Remove(string key) {
if (_table == null)
ParseString();
if (_table[key] != null) {
_table.Remove(key);
if (_state != null) {
// keep style attribute synchronized
_state["style"] = BuildString();
}
_style = null;
}
}
public void Remove(HtmlTextWriterStyle key) {
if (_intTable == null) {
return;
}
_intTable.Remove((int)key);
if (_state != null) {
// keep style attribute synchronized
_state["style"] = BuildString();
}
_style = null;
}
///
///
/// Removes all styles from the
///
public void Clear() {
_table = null;
_intTable = null;
if (_state != null) {
_state.Remove("style");
}
_style = null;
}
/* BuildString
* Form the style string from data contained in the
* hash table
*/
private string BuildString() {
// if the tables are null, there is nothing to build
if (((_table == null) || (_table.Count == 0)) &&
((_intTable == null) || (_intTable.Count == 0))) {
return null;
}
StringWriter sw = new StringWriter();
CssTextWriter writer = new CssTextWriter(sw);
Render(writer);
return sw.ToString();
}
/* ParseString
* Parse the style string and fill the hash table with
* corresponding values.
*/
private void ParseString() {
// create a case-insensitive dictionary
_table = new HybridDictionary(true);
string s = (_state == null) ? _style : (string)_state["style"];
if (s != null) {
Match match;
if ((match = _styleAttribRegex.Match( s, 0)).Success) {
CaptureCollection stylenames = match.Groups["stylename"].Captures;
CaptureCollection stylevalues = match.Groups["styleval"].Captures;
for (int i = 0; i < stylenames.Count; i++) {
String styleName = stylenames[i].ToString();
String styleValue = stylevalues[i].ToString();
_table[styleName] = styleValue;
}
}
}
}
///
/// Render out the attribute collection into a CSS TextWriter. This
/// effectively renders the value of an inline style attribute.
///
internal void Render(CssTextWriter writer) {
if (_table != null && _table.Count > 0) {
foreach (DictionaryEntry entry in _table) {
writer.WriteAttribute((string)entry.Key, (string)entry.Value);
}
}
if (_intTable != null && _intTable.Count > 0) {
foreach (DictionaryEntry entry in _intTable) {
writer.WriteAttribute((HtmlTextWriterStyle)entry.Key, (string)entry.Value);
}
}
}
///
/// Render out the attribute collection into a CSS TextWriter. This
/// effectively renders the value of an inline style attribute.
/// Used by a Style object to render out its CSS attributes into an HtmlTextWriter.
///
internal void Render(HtmlTextWriter writer) {
if (_table != null && _table.Count > 0) {
foreach (DictionaryEntry entry in _table) {
writer.AddStyleAttribute((string)entry.Key, (string)entry.Value);
}
}
if (_intTable != null && _intTable.Count > 0) {
foreach (DictionaryEntry entry in _intTable) {
writer.AddStyleAttribute((HtmlTextWriterStyle)entry.Key, (string)entry.Value);
}
}
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- DataServiceStreamResponse.cs
- User.cs
- WebConfigurationHostFileChange.cs
- Int16Converter.cs
- UnsafeNativeMethodsCLR.cs
- ECDiffieHellmanCng.cs
- WebReferencesBuildProvider.cs
- XPathEmptyIterator.cs
- PersonalizationProviderCollection.cs
- XmlReturnReader.cs
- PropertyGeneratedEventArgs.cs
- RtfToXamlReader.cs
- SmuggledIUnknown.cs
- BrowserCapabilitiesCodeGenerator.cs
- QueryOptionExpression.cs
- TypeInitializationException.cs
- PropertyGridEditorPart.cs
- ToolStripDropDownDesigner.cs
- BinaryFormatter.cs
- WindowsButton.cs
- SplineKeyFrames.cs
- PrintDialog.cs
- arclist.cs
- SR.cs
- Scalars.cs
- RedirectionProxy.cs
- Logging.cs
- hebrewshape.cs
- HttpException.cs
- StylusPlugInCollection.cs
- TextRenderer.cs
- MinimizableAttributeTypeConverter.cs
- SpecialTypeDataContract.cs
- XmlBindingWorker.cs
- GridViewColumnHeader.cs
- SeparatorAutomationPeer.cs
- ContractListAdapter.cs
- Point3DCollectionConverter.cs
- NativeMethodsOther.cs
- StylusPoint.cs
- ConfigurationElementProperty.cs
- XamlSerializationHelper.cs
- DataObjectPastingEventArgs.cs
- ErrorHandler.cs
- ChangeBlockUndoRecord.cs
- MultiTrigger.cs
- ISFClipboardData.cs
- ObjectComplexPropertyMapping.cs
- Avt.cs
- HasCopySemanticsAttribute.cs
- XamlSerializationHelper.cs
- PointKeyFrameCollection.cs
- DrawingAttributesDefaultValueFactory.cs
- Native.cs
- SqlTriggerAttribute.cs
- QilNode.cs
- oledbmetadatacollectionnames.cs
- CustomAttribute.cs
- SQLMoneyStorage.cs
- BindableTemplateBuilder.cs
- PeerEndPoint.cs
- ContentTextAutomationPeer.cs
- PointCollectionConverter.cs
- DataGridParentRows.cs
- RegistryPermission.cs
- DocComment.cs
- ProfileInfo.cs
- TextEditorLists.cs
- SHA1Managed.cs
- PeerCustomResolverSettings.cs
- SchemaCollectionCompiler.cs
- LocatorGroup.cs
- PropertyCollection.cs
- CompensationHandlingFilter.cs
- DataGridViewLayoutData.cs
- TypeForwardedToAttribute.cs
- RotationValidation.cs
- CaseInsensitiveHashCodeProvider.cs
- MdiWindowListItemConverter.cs
- WebBrowserNavigatingEventHandler.cs
- GridItemPattern.cs
- EtwTrace.cs
- EditingCoordinator.cs
- Debugger.cs
- IconConverter.cs
- CodeAttributeArgumentCollection.cs
- TransformConverter.cs
- storepermissionattribute.cs
- WCFModelStrings.Designer.cs
- Section.cs
- oledbmetadatacollectionnames.cs
- FlowPosition.cs
- DataSet.cs
- CustomAttribute.cs
- WebServiceReceiveDesigner.cs
- DataViewManagerListItemTypeDescriptor.cs
- SignatureGenerator.cs
- ConvertTextFrag.cs
- ComponentEditorForm.cs
- Page.cs