69 lines
2.7 KiB
C#
69 lines
2.7 KiB
C#
namespace System.Web.DynamicData {
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Web.UI.WebControls;
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using System.Web.Hosting;
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// This FieldTemplateFactory is used for the simple cases where the user doesn't have
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// a FieldTemplate directory but wants to get basic validation logic. In a sense
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// it is a smarter version of a BoundField
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internal class SimpleFieldTemplateFactory : FieldTemplateFactory {
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private static bool? _directoryExists;
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public SimpleFieldTemplateFactory()
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: this(HostingEnvironment.VirtualPathProvider) {
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}
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internal SimpleFieldTemplateFactory(VirtualPathProvider vpp)
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: base(vpp) {
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VirtualPathProvider = vpp;
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}
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internal VirtualPathProvider VirtualPathProvider {
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get;
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set;
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}
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protected virtual bool DirectoryExists {
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get {
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if (!_directoryExists.HasValue) {
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// This is expensive so cache it.
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_directoryExists = VirtualPathProvider.DirectoryExists(TemplateFolderVirtualPath);
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}
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return _directoryExists.Value;
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}
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}
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public override IFieldTemplate CreateFieldTemplate(MetaColumn column, DataBoundControlMode mode, string uiHint) {
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// Call Preprocess mode so that we do set the right mode base on the the column's attributes
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mode = PreprocessMode(column, mode);
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bool readOnly = (mode == DataBoundControlMode.ReadOnly);
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// If the folder doesn't exist use the fallback
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if (!DirectoryExists) {
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return CreateFieldTemplate(readOnly, column);
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}
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// Always see check if the base found anything first then fall back to the simple field template
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IFieldTemplate fieldTemplate = base.CreateFieldTemplate(column, mode, uiHint);
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// If there was no field template found and the user specified a uiHint then use the default behavior
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if (!String.IsNullOrEmpty(uiHint)) {
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return fieldTemplate;
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}
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return fieldTemplate ?? CreateFieldTemplate(readOnly, column);
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}
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private IFieldTemplate CreateFieldTemplate(bool readOnly, MetaColumn column) {
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// By default we'll support checkbox fields for boolean and a textbox for
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// everything else
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if (column.ColumnType == typeof(bool)) {
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return SimpleFieldTemplateUserControl.CreateBooleanTemplate(readOnly);
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}
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return SimpleFieldTemplateUserControl.CreateTextTemplate(column, readOnly);
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}
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}
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}
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