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Copy pathCachedModelMetadata.cs
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506 lines (461 loc) · 14.4 KB
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// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
namespace System.Web.Mvc
{
// This class assumes that model metadata is expensive to create, and allows the user to
// stash a cache object that can be copied around as a prototype to make creation and
// computation quicker. It delegates the retrieval of values to getter methods, the results
// of which are cached on a per-metadata-instance basis.
//
// This allows flexible caching strategies: either caching the source of information across
// instances or caching of the actual information itself, depending on what the developer
// decides to put into the prototype cache.
public abstract class CachedModelMetadata<TPrototypeCache> : ModelMetadata
{
private bool _convertEmptyStringToNull;
private string _dataTypeName;
private string _description;
private string _displayFormatString;
private string _displayName;
private string _editFormatString;
private bool _hasNonDefaultEditFormat;
private bool _hideSurroundingHtml;
private bool _htmlEncode;
private bool _isReadOnly;
private bool _isRequired;
private string _nullDisplayText;
private int _order;
private string _shortDisplayName;
private bool _showForDisplay;
private bool _showForEdit;
private string _templateHint;
private string _watermark;
private bool _convertEmptyStringToNullComputed;
private bool _dataTypeNameComputed;
private bool _descriptionComputed;
private bool _displayFormatStringComputed;
private bool _displayNameComputed;
private bool _editFormatStringComputed;
private bool _hasNonDefaultEditFormatComputed;
private bool _hideSurroundingHtmlComputed;
private bool _htmlEncodeComputed;
private bool _isReadOnlyComputed;
private bool _isRequiredComputed;
private bool _nullDisplayTextComputed;
private bool _orderComputed;
private bool _shortDisplayNameComputed;
private bool _showForDisplayComputed;
private bool _showForEditComputed;
private bool _templateHintComputed;
private bool _watermarkComputed;
// Constructor for creating real instances of the metadata class based on a prototype
protected CachedModelMetadata(CachedModelMetadata<TPrototypeCache> prototype, Func<object> modelAccessor)
: base(prototype.Provider, prototype.ContainerType, modelAccessor, prototype.ModelType, prototype.PropertyName)
{
PrototypeCache = prototype.PrototypeCache;
}
// Constructor for creating the prototype instances of the metadata class
protected CachedModelMetadata(CachedDataAnnotationsModelMetadataProvider provider, Type containerType, Type modelType, string propertyName, TPrototypeCache prototypeCache)
: base(provider, containerType, null /* modelAccessor */, modelType, propertyName)
{
PrototypeCache = prototypeCache;
}
public sealed override bool ConvertEmptyStringToNull
{
get
{
if (!_convertEmptyStringToNullComputed)
{
_convertEmptyStringToNull = ComputeConvertEmptyStringToNull();
_convertEmptyStringToNullComputed = true;
}
return _convertEmptyStringToNull;
}
set
{
_convertEmptyStringToNull = value;
_convertEmptyStringToNullComputed = true;
}
}
public sealed override string DataTypeName
{
get
{
if (!_dataTypeNameComputed)
{
_dataTypeName = ComputeDataTypeName();
_dataTypeNameComputed = true;
}
return _dataTypeName;
}
set
{
_dataTypeName = value;
_dataTypeNameComputed = true;
}
}
public sealed override string Description
{
get
{
if (!_descriptionComputed)
{
_description = ComputeDescription();
_descriptionComputed = true;
}
return _description;
}
set
{
_description = value;
_descriptionComputed = true;
}
}
public sealed override string DisplayFormatString
{
get
{
if (!_displayFormatStringComputed)
{
_displayFormatString = ComputeDisplayFormatString();
_displayFormatStringComputed = true;
}
return _displayFormatString;
}
set
{
_displayFormatString = value;
_displayFormatStringComputed = true;
}
}
public sealed override string DisplayName
{
get
{
if (!_displayNameComputed)
{
_displayName = ComputeDisplayName();
_displayNameComputed = true;
}
return _displayName;
}
set
{
_displayName = value;
_displayNameComputed = true;
}
}
public sealed override string EditFormatString
{
get
{
if (!_editFormatStringComputed)
{
_editFormatString = ComputeEditFormatString();
_editFormatStringComputed = true;
}
return _editFormatString;
}
set
{
_editFormatString = value;
_editFormatStringComputed = true;
}
}
internal sealed override bool HasNonDefaultEditFormat
{
get
{
if (!_hasNonDefaultEditFormatComputed)
{
_hasNonDefaultEditFormat = ComputeHasNonDefaultEditFormat();
_hasNonDefaultEditFormatComputed = true;
}
return _hasNonDefaultEditFormat;
}
set
{
_hasNonDefaultEditFormat = value;
_hasNonDefaultEditFormatComputed = true;
}
}
public sealed override bool HideSurroundingHtml
{
get
{
if (!_hideSurroundingHtmlComputed)
{
_hideSurroundingHtml = ComputeHideSurroundingHtml();
_hideSurroundingHtmlComputed = true;
}
return _hideSurroundingHtml;
}
set
{
_hideSurroundingHtml = value;
_hideSurroundingHtmlComputed = true;
}
}
public sealed override bool HtmlEncode
{
get
{
if (!_htmlEncodeComputed)
{
_htmlEncode = ComputeHtmlEncode();
_htmlEncodeComputed = true;
}
return _htmlEncode;
}
set
{
_htmlEncode = value;
_htmlEncodeComputed = true;
}
}
public sealed override bool IsReadOnly
{
get
{
if (!_isReadOnlyComputed)
{
_isReadOnly = ComputeIsReadOnly();
_isReadOnlyComputed = true;
}
return _isReadOnly;
}
set
{
_isReadOnly = value;
_isReadOnlyComputed = true;
}
}
public sealed override bool IsRequired
{
get
{
if (!_isRequiredComputed)
{
_isRequired = ComputeIsRequired();
_isRequiredComputed = true;
}
return _isRequired;
}
set
{
_isRequired = value;
_isRequiredComputed = true;
}
}
public sealed override string NullDisplayText
{
get
{
if (!_nullDisplayTextComputed)
{
_nullDisplayText = ComputeNullDisplayText();
_nullDisplayTextComputed = true;
}
return _nullDisplayText;
}
set
{
_nullDisplayText = value;
_nullDisplayTextComputed = true;
}
}
public sealed override int Order
{
get
{
if (!_orderComputed)
{
_order = ComputeOrder();
_orderComputed = true;
}
return _order;
}
set
{
_order = value;
_orderComputed = true;
}
}
protected TPrototypeCache PrototypeCache { get; set; }
public sealed override string ShortDisplayName
{
get
{
if (!_shortDisplayNameComputed)
{
_shortDisplayName = ComputeShortDisplayName();
_shortDisplayNameComputed = true;
}
return _shortDisplayName;
}
set
{
_shortDisplayName = value;
_shortDisplayNameComputed = true;
}
}
public sealed override bool ShowForDisplay
{
get
{
if (!_showForDisplayComputed)
{
_showForDisplay = ComputeShowForDisplay();
_showForDisplayComputed = true;
}
return _showForDisplay;
}
set
{
_showForDisplay = value;
_showForDisplayComputed = true;
}
}
public sealed override bool ShowForEdit
{
get
{
if (!_showForEditComputed)
{
_showForEdit = ComputeShowForEdit();
_showForEditComputed = true;
}
return _showForEdit;
}
set
{
_showForEdit = value;
_showForEditComputed = true;
}
}
public sealed override string SimpleDisplayText
{
get
{
// This is already cached in the base class with an appropriate override available
return base.SimpleDisplayText;
}
set { base.SimpleDisplayText = value; }
}
public sealed override string TemplateHint
{
get
{
if (!_templateHintComputed)
{
_templateHint = ComputeTemplateHint();
_templateHintComputed = true;
}
return _templateHint;
}
set
{
_templateHint = value;
_templateHintComputed = true;
}
}
public sealed override string Watermark
{
get
{
if (!_watermarkComputed)
{
_watermark = ComputeWatermark();
_watermarkComputed = true;
}
return _watermark;
}
set
{
_watermark = value;
_watermarkComputed = true;
}
}
protected virtual bool ComputeConvertEmptyStringToNull()
{
return base.ConvertEmptyStringToNull;
}
protected virtual string ComputeDataTypeName()
{
return base.DataTypeName;
}
protected virtual string ComputeDescription()
{
return base.Description;
}
protected virtual string ComputeDisplayFormatString()
{
return base.DisplayFormatString;
}
protected virtual string ComputeDisplayName()
{
return base.DisplayName;
}
protected virtual string ComputeEditFormatString()
{
return base.EditFormatString;
}
protected virtual bool ComputeHasNonDefaultEditFormat()
{
return base.HasNonDefaultEditFormat;
}
protected virtual bool ComputeHideSurroundingHtml()
{
return base.HideSurroundingHtml;
}
protected virtual bool ComputeHtmlEncode()
{
return base.HtmlEncode;
}
protected virtual bool ComputeIsReadOnly()
{
return base.IsReadOnly;
}
protected virtual bool ComputeIsRequired()
{
return base.IsRequired;
}
protected virtual string ComputeNullDisplayText()
{
return base.NullDisplayText;
}
protected virtual int ComputeOrder()
{
return base.Order;
}
protected virtual string ComputeShortDisplayName()
{
return base.ShortDisplayName;
}
protected virtual bool ComputeShowForDisplay()
{
return base.ShowForDisplay;
}
protected virtual bool ComputeShowForEdit()
{
return base.ShowForEdit;
}
protected virtual string ComputeSimpleDisplayText()
{
return base.GetSimpleDisplayText();
}
protected virtual string ComputeTemplateHint()
{
return base.TemplateHint;
}
protected virtual string ComputeWatermark()
{
return base.Watermark;
}
protected sealed override string GetSimpleDisplayText()
{
// Rename for consistency
return ComputeSimpleDisplayText();
}
}
}
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