Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / MS / Internal / IListConverters.cs / 1305600 / IListConverters.cs
//----------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// Description: Converters for IList, IList, IList
// IList and IList.
//
// History:
// 7/20/2005 garyyang - created
//
//---------------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Globalization;
using System.Text;
using System.Windows;
using MS.Internal;
using SR=MS.Internal.PresentationCore.SR;
using SRID=MS.Internal.PresentationCore.SRID;
using MS.Internal.PresentationCore;
namespace System.Windows.Media.Converters
{
//
// The following are IList converters for IList, IList, IList, IList, IList.
// More code sharing might be achieved by creating a generic TypeConverter. But XAML parser doesn't
// support generic TypeConverter now.
//
///
/// The base converter for IList of T to string conversion in XAML serialization
///
[FriendAccessAllowed] // all implementations are used by Framework at serialization
public abstract class BaseIListConverter : TypeConverter
{
///
/// Indicates if a type can be converted from (returns true for string).
///
public override bool CanConvertFrom(ITypeDescriptorContext td, Type t)
{
return t == typeof(string); // can only convert from string
}
///
/// Indicates if a type can be converted to (returns true for string).
///
public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
{
return destinationType == typeof(string); // can only convert to string
}
///
/// Converts from a string.
///
public override object ConvertFrom(ITypeDescriptorContext td, CultureInfo ci, object value)
{
if (null == value)
{
throw GetConvertFromException(value);
}
string s = value as string;
if (null == s)
{
throw new ArgumentException(SR.Get(SRID.General_BadType, "ConvertFrom"), "value");
}
return ConvertFromCore(td, ci, s);
}
///
/// Converts to a string
///
public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
if (destinationType != null)
return ConvertToCore(context, culture, value, destinationType);
// Pass unhandled cases to base class (which will throw exceptions for null value or destinationType.)
return base.ConvertTo(context, culture, value, destinationType);
}
///
/// To be implemented by subclasses to convert to various types from string.
///
internal abstract object ConvertFromCore(ITypeDescriptorContext td, CultureInfo ci, string value);
///
/// To be implemented by subclasses to convert string to various types.
///
internal abstract object ConvertToCore(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType);
internal TokenizerHelper _tokenizer;
internal const char DelimiterChar = ' ';
}
///
/// TypeConverter to convert IList of double to and from string.
/// The converted string is a sequence of delimited double number.
///
public sealed class DoubleIListConverter : BaseIListConverter
{
internal sealed override object ConvertFromCore(ITypeDescriptorContext td, CultureInfo ci, string value)
{
_tokenizer = new TokenizerHelper(value, '\0' /* quote char */, DelimiterChar);
// Estimate the output list's capacity from length of the input string.
List list = new List(Math.Min(256, value.Length / EstimatedCharCountPerItem + 1));
while (_tokenizer.NextToken())
{
list.Add(Convert.ToDouble(_tokenizer.GetCurrentToken(), ci));
}
return list;
}
internal override object ConvertToCore(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
IList list = value as IList;
if (list == null)
{
throw GetConvertToException(value, destinationType);
}
// Estimate the output string's length from the element count of the List.
StringBuilder builder = new StringBuilder(EstimatedCharCountPerItem * list.Count);
for (int i = 0; i < list.Count; i++)
{
if (i > 0)
builder.Append(DelimiterChar);
builder.Append(list[i].ToString(culture));
}
return builder.ToString();
}
// A double is estimated to take 5 characters on average, plus 1 delimiter, e.g. "5.328 ".
private const int EstimatedCharCountPerItem = 6;
}
///
/// TypeConverter to convert IList of ushort to and from string.
/// The converted string is a sequence of delimited ushort number.
///
public sealed class UShortIListConverter : BaseIListConverter
{
internal override object ConvertFromCore(ITypeDescriptorContext td, CultureInfo ci, string value)
{
_tokenizer = new TokenizerHelper(value, '\0' /* quote char */, DelimiterChar);
List list = new List(Math.Min(256, value.Length / EstimatedCharCountPerItem + 1));
while (_tokenizer.NextToken())
{
list.Add(Convert.ToUInt16(_tokenizer.GetCurrentToken(), ci));
}
return list;
}
internal override object ConvertToCore(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
IList list = value as IList;
if (list == null)
{
throw GetConvertToException(value, destinationType);
}
StringBuilder builder = new StringBuilder(EstimatedCharCountPerItem * list.Count);
for (int i = 0; i < list.Count; i++)
{
if (i > 0)
builder.Append(DelimiterChar);
builder.Append(list[i].ToString(culture));
}
return builder.ToString();
}
// A ushort is estimated to take 2 characters on average, plus 1 delimiter.
private const int EstimatedCharCountPerItem = 3;
}
///
/// TypeConverter to convert IList of bool to and from string.
/// The converted string is a sequence of delimited 0s and 1s. "0" for false and "1" for true.
///
public sealed class BoolIListConverter : BaseIListConverter
{
internal override object ConvertFromCore(ITypeDescriptorContext td, CultureInfo ci, string value)
{
_tokenizer = new TokenizerHelper(value, '\0' /* quote char */, DelimiterChar);
List list = new List(Math.Min(256, value.Length / EstimatedCharCountPerItem + 1));
while (_tokenizer.NextToken())
{
list.Add(Convert.ToInt32(_tokenizer.GetCurrentToken(), ci) != 0);
}
return list;
}
internal override object ConvertToCore(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
IList list = value as IList;
if (list == null)
{
throw GetConvertToException(value, destinationType);
}
StringBuilder builder = new StringBuilder(EstimatedCharCountPerItem * list.Count);
for (int i = 0; i < list.Count; i++)
{
if (i > 0)
builder.Append(DelimiterChar);
builder.Append((list[i] ? 1 : 0));
}
return builder.ToString();
}
// A bool takes 1 character plus 1 delimiter.
private const int EstimatedCharCountPerItem = 2;
}
///
/// TypeConverter to convert IList of Point to and from string.
/// The converted string is a sequence of delimited Point values. Point values are converted by PointConverter.
///
public sealed class PointIListConverter : BaseIListConverter
{
internal override object ConvertFromCore(ITypeDescriptorContext td, CultureInfo ci, string value)
{
_tokenizer = new TokenizerHelper(value, '\0' /* quote char */, DelimiterChar);
List list = new List(Math.Min(256, value.Length / EstimatedCharCountPerItem + 1));
while (_tokenizer.NextToken())
{
list.Add((Point) converter.ConvertFrom(td, ci, _tokenizer.GetCurrentToken()));
}
return list;
}
internal override object ConvertToCore(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
IList list = value as IList;
if (list == null)
{
throw GetConvertToException(value, destinationType);
}
StringBuilder builder = new StringBuilder(EstimatedCharCountPerItem * list.Count);
for (int i = 0; i < list.Count; i++)
{
if (i > 0)
builder.Append(DelimiterChar);
builder.Append((string) converter.ConvertTo(context, culture, list[i], typeof(string)));
}
return builder.ToString();
}
private PointConverter converter = new PointConverter();
// A point takes 2 double and 2 delimiters. Estimated to be 12 characters.
private const int EstimatedCharCountPerItem = 12;
}
///
/// TypeConverter to convert IList of Char to and from string.
/// The converted string is a concatenation of all the chars in the IList. There is no delimiter.
///
public sealed class CharIListConverter : BaseIListConverter
{
internal override object ConvertFromCore(ITypeDescriptorContext td, CultureInfo ci, string value)
{
return value.ToCharArray();
}
internal override object ConvertToCore(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
IList list = value as IList;
if (list == null)
{
throw GetConvertToException(value, destinationType);
}
// An intermediate allocation is needed to construct the string as string doesn't take IList
// in its constructor.
char[] chars = new char[list.Count];
list.CopyTo(chars, 0);
return new string(chars);
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//----------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// Description: Converters for IList, IList, IList
// IList and IList.
//
// History:
// 7/20/2005 garyyang - created
//
//---------------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Globalization;
using System.Text;
using System.Windows;
using MS.Internal;
using SR=MS.Internal.PresentationCore.SR;
using SRID=MS.Internal.PresentationCore.SRID;
using MS.Internal.PresentationCore;
namespace System.Windows.Media.Converters
{
//
// The following are IList converters for IList, IList, IList, IList, IList.
// More code sharing might be achieved by creating a generic TypeConverter. But XAML parser doesn't
// support generic TypeConverter now.
//
///
/// The base converter for IList of T to string conversion in XAML serialization
///
[FriendAccessAllowed] // all implementations are used by Framework at serialization
public abstract class BaseIListConverter : TypeConverter
{
///
/// Indicates if a type can be converted from (returns true for string).
///
public override bool CanConvertFrom(ITypeDescriptorContext td, Type t)
{
return t == typeof(string); // can only convert from string
}
///
/// Indicates if a type can be converted to (returns true for string).
///
public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
{
return destinationType == typeof(string); // can only convert to string
}
///
/// Converts from a string.
///
public override object ConvertFrom(ITypeDescriptorContext td, CultureInfo ci, object value)
{
if (null == value)
{
throw GetConvertFromException(value);
}
string s = value as string;
if (null == s)
{
throw new ArgumentException(SR.Get(SRID.General_BadType, "ConvertFrom"), "value");
}
return ConvertFromCore(td, ci, s);
}
///
/// Converts to a string
///
public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
if (destinationType != null)
return ConvertToCore(context, culture, value, destinationType);
// Pass unhandled cases to base class (which will throw exceptions for null value or destinationType.)
return base.ConvertTo(context, culture, value, destinationType);
}
///
/// To be implemented by subclasses to convert to various types from string.
///
internal abstract object ConvertFromCore(ITypeDescriptorContext td, CultureInfo ci, string value);
///
/// To be implemented by subclasses to convert string to various types.
///
internal abstract object ConvertToCore(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType);
internal TokenizerHelper _tokenizer;
internal const char DelimiterChar = ' ';
}
///
/// TypeConverter to convert IList of double to and from string.
/// The converted string is a sequence of delimited double number.
///
public sealed class DoubleIListConverter : BaseIListConverter
{
internal sealed override object ConvertFromCore(ITypeDescriptorContext td, CultureInfo ci, string value)
{
_tokenizer = new TokenizerHelper(value, '\0' /* quote char */, DelimiterChar);
// Estimate the output list's capacity from length of the input string.
List list = new List(Math.Min(256, value.Length / EstimatedCharCountPerItem + 1));
while (_tokenizer.NextToken())
{
list.Add(Convert.ToDouble(_tokenizer.GetCurrentToken(), ci));
}
return list;
}
internal override object ConvertToCore(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
IList list = value as IList;
if (list == null)
{
throw GetConvertToException(value, destinationType);
}
// Estimate the output string's length from the element count of the List.
StringBuilder builder = new StringBuilder(EstimatedCharCountPerItem * list.Count);
for (int i = 0; i < list.Count; i++)
{
if (i > 0)
builder.Append(DelimiterChar);
builder.Append(list[i].ToString(culture));
}
return builder.ToString();
}
// A double is estimated to take 5 characters on average, plus 1 delimiter, e.g. "5.328 ".
private const int EstimatedCharCountPerItem = 6;
}
///
/// TypeConverter to convert IList of ushort to and from string.
/// The converted string is a sequence of delimited ushort number.
///
public sealed class UShortIListConverter : BaseIListConverter
{
internal override object ConvertFromCore(ITypeDescriptorContext td, CultureInfo ci, string value)
{
_tokenizer = new TokenizerHelper(value, '\0' /* quote char */, DelimiterChar);
List list = new List(Math.Min(256, value.Length / EstimatedCharCountPerItem + 1));
while (_tokenizer.NextToken())
{
list.Add(Convert.ToUInt16(_tokenizer.GetCurrentToken(), ci));
}
return list;
}
internal override object ConvertToCore(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
IList list = value as IList;
if (list == null)
{
throw GetConvertToException(value, destinationType);
}
StringBuilder builder = new StringBuilder(EstimatedCharCountPerItem * list.Count);
for (int i = 0; i < list.Count; i++)
{
if (i > 0)
builder.Append(DelimiterChar);
builder.Append(list[i].ToString(culture));
}
return builder.ToString();
}
// A ushort is estimated to take 2 characters on average, plus 1 delimiter.
private const int EstimatedCharCountPerItem = 3;
}
///
/// TypeConverter to convert IList of bool to and from string.
/// The converted string is a sequence of delimited 0s and 1s. "0" for false and "1" for true.
///
public sealed class BoolIListConverter : BaseIListConverter
{
internal override object ConvertFromCore(ITypeDescriptorContext td, CultureInfo ci, string value)
{
_tokenizer = new TokenizerHelper(value, '\0' /* quote char */, DelimiterChar);
List list = new List(Math.Min(256, value.Length / EstimatedCharCountPerItem + 1));
while (_tokenizer.NextToken())
{
list.Add(Convert.ToInt32(_tokenizer.GetCurrentToken(), ci) != 0);
}
return list;
}
internal override object ConvertToCore(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
IList list = value as IList;
if (list == null)
{
throw GetConvertToException(value, destinationType);
}
StringBuilder builder = new StringBuilder(EstimatedCharCountPerItem * list.Count);
for (int i = 0; i < list.Count; i++)
{
if (i > 0)
builder.Append(DelimiterChar);
builder.Append((list[i] ? 1 : 0));
}
return builder.ToString();
}
// A bool takes 1 character plus 1 delimiter.
private const int EstimatedCharCountPerItem = 2;
}
///
/// TypeConverter to convert IList of Point to and from string.
/// The converted string is a sequence of delimited Point values. Point values are converted by PointConverter.
///
public sealed class PointIListConverter : BaseIListConverter
{
internal override object ConvertFromCore(ITypeDescriptorContext td, CultureInfo ci, string value)
{
_tokenizer = new TokenizerHelper(value, '\0' /* quote char */, DelimiterChar);
List list = new List(Math.Min(256, value.Length / EstimatedCharCountPerItem + 1));
while (_tokenizer.NextToken())
{
list.Add((Point) converter.ConvertFrom(td, ci, _tokenizer.GetCurrentToken()));
}
return list;
}
internal override object ConvertToCore(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
IList list = value as IList;
if (list == null)
{
throw GetConvertToException(value, destinationType);
}
StringBuilder builder = new StringBuilder(EstimatedCharCountPerItem * list.Count);
for (int i = 0; i < list.Count; i++)
{
if (i > 0)
builder.Append(DelimiterChar);
builder.Append((string) converter.ConvertTo(context, culture, list[i], typeof(string)));
}
return builder.ToString();
}
private PointConverter converter = new PointConverter();
// A point takes 2 double and 2 delimiters. Estimated to be 12 characters.
private const int EstimatedCharCountPerItem = 12;
}
///
/// TypeConverter to convert IList of Char to and from string.
/// The converted string is a concatenation of all the chars in the IList. There is no delimiter.
///
public sealed class CharIListConverter : BaseIListConverter
{
internal override object ConvertFromCore(ITypeDescriptorContext td, CultureInfo ci, string value)
{
return value.ToCharArray();
}
internal override object ConvertToCore(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
IList list = value as IList;
if (list == null)
{
throw GetConvertToException(value, destinationType);
}
// An intermediate allocation is needed to construct the string as string doesn't take IList
// in its constructor.
char[] chars = new char[list.Count];
list.CopyTo(chars, 0);
return new string(chars);
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- AmbiguousMatchException.cs
- PageRouteHandler.cs
- MobileUITypeEditor.cs
- ContractMapping.cs
- ContentWrapperAttribute.cs
- ToolStripProfessionalLowResolutionRenderer.cs
- GeneralTransform3DCollection.cs
- XpsResource.cs
- EntityDataSourceChangedEventArgs.cs
- BitVector32.cs
- CancelRequestedQuery.cs
- DataServiceProviderMethods.cs
- UnsafeNativeMethods.cs
- Padding.cs
- SHA1Managed.cs
- ResourceWriter.cs
- DataGridViewColumnConverter.cs
- HyperLink.cs
- HtmlPanelAdapter.cs
- MemoryMappedFileSecurity.cs
- LinkAreaEditor.cs
- InheritablePropertyChangeInfo.cs
- SystemFonts.cs
- unitconverter.cs
- DataSpaceManager.cs
- DesignConnection.cs
- ImageDrawing.cs
- ProfilePropertyMetadata.cs
- XmlSchemaSubstitutionGroup.cs
- SynchronizingStream.cs
- PermissionSet.cs
- FontFamilyValueSerializer.cs
- WmlControlAdapter.cs
- SHA1CryptoServiceProvider.cs
- TextShapeableCharacters.cs
- XPathSingletonIterator.cs
- WorkflowInvoker.cs
- SqlDependencyListener.cs
- SoapEnumAttribute.cs
- FileSystemWatcher.cs
- cache.cs
- SatelliteContractVersionAttribute.cs
- XmlWriter.cs
- HttpCookiesSection.cs
- OptimizerPatterns.cs
- NativeMethods.cs
- PagesChangedEventArgs.cs
- HtmlInputText.cs
- HealthMonitoringSection.cs
- CloudCollection.cs
- NullRuntimeConfig.cs
- FontUnitConverter.cs
- DataGridViewComboBoxCell.cs
- HttpPostServerProtocol.cs
- TileBrush.cs
- EdgeModeValidation.cs
- OleDbEnumerator.cs
- SyntaxCheck.cs
- ListControl.cs
- Attributes.cs
- DataObject.cs
- safemediahandle.cs
- EnumUnknown.cs
- DataGridViewRowStateChangedEventArgs.cs
- ResolvePPIDRequest.cs
- FixedTextView.cs
- Parameter.cs
- PrtCap_Reader.cs
- SelectedGridItemChangedEvent.cs
- ObjectStateManager.cs
- ToolStripOverflow.cs
- FolderLevelBuildProvider.cs
- UserPreferenceChangingEventArgs.cs
- ManagementNamedValueCollection.cs
- AssemblyCacheEntry.cs
- SubqueryTrackingVisitor.cs
- ShutDownListener.cs
- HttpWebRequestElement.cs
- MultiAsyncResult.cs
- DiagnosticsConfiguration.cs
- TableLayoutSettings.cs
- APCustomTypeDescriptor.cs
- VisualStateChangedEventArgs.cs
- StrongName.cs
- TypeSystem.cs
- CodeMemberEvent.cs
- DeclarativeExpressionConditionDeclaration.cs
- AppDomainFactory.cs
- ConfigXmlComment.cs
- AssemblyBuilder.cs
- oledbmetadatacollectionnames.cs
- ElementInit.cs
- Propagator.JoinPropagator.cs
- Int16.cs
- ImageMap.cs
- SqlProfileProvider.cs
- ClientRuntimeConfig.cs
- InfoCardXmlSerializer.cs
- XmlWriterSettings.cs
- StrongNameKeyPair.cs