Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / Core / CSharp / MS / Internal / IListConverters.cs / 1 / 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
- KeyNotFoundException.cs
- DispatcherExceptionFilterEventArgs.cs
- ToolBar.cs
- FontNameConverter.cs
- LinqDataSourceValidationException.cs
- EntityDataSourceWizardForm.cs
- ImageMetadata.cs
- ObjectListComponentEditor.cs
- HtmlInputControl.cs
- RegexInterpreter.cs
- DependencySource.cs
- ContentControl.cs
- DesignerLoader.cs
- TreeSet.cs
- WindowInteractionStateTracker.cs
- ProfileManager.cs
- StringReader.cs
- EUCJPEncoding.cs
- HotSpotCollection.cs
- AttributeCollection.cs
- SByteConverter.cs
- HwndSourceKeyboardInputSite.cs
- CodeCompiler.cs
- OleAutBinder.cs
- SoapExtensionTypeElement.cs
- QilSortKey.cs
- Vector3DCollection.cs
- ConnectionConsumerAttribute.cs
- XPathMessageFilter.cs
- ObjectTokenCategory.cs
- DBCommandBuilder.cs
- Array.cs
- Permission.cs
- DoubleConverter.cs
- PrimaryKeyTypeConverter.cs
- DataGridViewComboBoxCell.cs
- CodeConditionStatement.cs
- BlockUIContainer.cs
- StringExpressionSet.cs
- Matrix.cs
- LineGeometry.cs
- X509CertificateCollection.cs
- PartitionedDataSource.cs
- HtmlToClrEventProxy.cs
- OledbConnectionStringbuilder.cs
- OrderedEnumerableRowCollection.cs
- __Error.cs
- StringDictionaryWithComparer.cs
- SafeRightsManagementSessionHandle.cs
- PathNode.cs
- ListBoxChrome.cs
- DispatcherObject.cs
- OdbcDataAdapter.cs
- Typeface.cs
- CornerRadiusConverter.cs
- AtomEntry.cs
- CancelEventArgs.cs
- WebControlAdapter.cs
- DataBindingCollection.cs
- TextCharacters.cs
- TextEditorParagraphs.cs
- QuaternionValueSerializer.cs
- DecimalStorage.cs
- DeferrableContent.cs
- SimpleRecyclingCache.cs
- KeyGestureValueSerializer.cs
- ServiceDeploymentInfo.cs
- FrameworkElement.cs
- ObjectRef.cs
- WebControlAdapter.cs
- EastAsianLunisolarCalendar.cs
- MsmqQueue.cs
- AdPostCacheSubstitution.cs
- DockProviderWrapper.cs
- DataColumn.cs
- TreeNodeSelectionProcessor.cs
- BitVector32.cs
- SiteMapHierarchicalDataSourceView.cs
- DoubleLink.cs
- DataList.cs
- HtmlInputHidden.cs
- MobileControlDesigner.cs
- HitTestWithPointDrawingContextWalker.cs
- TiffBitmapDecoder.cs
- X509Chain.cs
- QilGenerator.cs
- CompoundFileStreamReference.cs
- SerializationUtilities.cs
- CursorInteropHelper.cs
- LineVisual.cs
- XmlChildEnumerator.cs
- UrlPath.cs
- SelectionPatternIdentifiers.cs
- SqlUDTStorage.cs
- UnsafeNativeMethods.cs
- BinaryConverter.cs
- BasicCellRelation.cs
- AuthenticationService.cs
- DataListComponentEditor.cs
- ListItemConverter.cs