private RenderFragment AutoGenerateTemplate(IEditorItem item) => builder =>
{
var fieldType = item.PropertyType;
if (fieldType != null && Model != null)
{
// GetDisplayName
var fieldName = item.GetFieldName();
var displayName = Utility.GetDisplayName(Model, fieldName);
// FieldValue
var valueInvoker = GetPropertyValueLambdaCache.GetOrAdd((typeof(TModel), fieldName), key => LambdaExtensions.GetPropertyValueLambda <TModel, object?>(Model, key.FieldName).Compile());
var fieldValue = valueInvoker.Invoke(Model);
// ValueChanged
var valueChangedInvoker = CreateLambda(fieldType).Compile();
var fieldValueChanged = valueChangedInvoker(Model, fieldName);
// ValueExpression
var body = Expression.Property(Expression.Constant(Model), typeof(TModel), fieldName);
var tDelegate = typeof(Func <>).MakeGenericType(fieldType);
var valueExpression = Expression.Lambda(tDelegate, body);
var index = 0;
var componentType = EditorForm <TModel> .GenerateComponent(fieldType);
builder.OpenComponent(index++, componentType);
builder.AddAttribute(index++, "DisplayText", displayName);
builder.AddAttribute(index++, "Value", fieldValue);
builder.AddAttribute(index++, "ValueChanged", fieldValueChanged);
builder.AddAttribute(index++, "ValueExpression", valueExpression);
builder.AddAttribute(index++, "IsDisabled", item.Readonly);
builder.AddMultipleAttributes(index++, CreateMultipleAttributes(fieldType, fieldName, item));
builder.CloseComponent();
}
};
private RenderFragment AutoGenerateTemplate(IEditorItem item) => builder =>
{
var fieldType = item.PropertyType;
if (fieldType != null && Model != null)
{
var fieldName = item.GetFieldName();
// GetDisplayName
// 先取 Text 属性值，然后取资源文件中的值
var displayName = item.GetDisplayName() ?? Utility.GetDisplayName(Model, fieldName);
// FieldValue
var valueInvoker = GetPropertyValueLambdaCache.GetOrAdd((typeof(TModel), fieldName), key => LambdaExtensions.GetPropertyValueLambda <TModel, object?>(Model, key.FieldName).Compile());
var fieldValue = valueInvoker.Invoke(Model);
// ValueChanged
var valueChangedInvoker = CreateLambda(fieldType).Compile();
var fieldValueChanged = valueChangedInvoker(Model, fieldName);
// ValueExpression
var body = Expression.Property(Expression.Constant(Model), typeof(TModel), fieldName);
var tDelegate = typeof(Func <>).MakeGenericType(fieldType);
var valueExpression = Expression.Lambda(tDelegate, body);
if (IsDisplay)
{
builder.OpenComponent(0, typeof(Display <>).MakeGenericType(fieldType));
builder.AddAttribute(1, "DisplayText", displayName);
builder.AddAttribute(2, "Value", fieldValue);
builder.AddAttribute(3, "ValueChanged", fieldValueChanged);
builder.AddAttribute(4, "ValueExpression", valueExpression);
builder.AddAttribute(5, "ShowLabel", ShowLabel ?? true);
builder.CloseComponent();
}
else
{
var componentType = item.ComponentType ?? EditorForm <TModel> .GenerateComponent(fieldType, item.Rows != 0);
builder.OpenComponent(0, componentType);
builder.AddAttribute(1, "DisplayText", displayName);
builder.AddAttribute(2, "Value", fieldValue);
builder.AddAttribute(3, "ValueChanged", fieldValueChanged);
builder.AddAttribute(4, "ValueExpression", valueExpression);
builder.AddAttribute(5, "IsDisabled", item.Readonly);
if (IsCheckboxList(fieldType) && item.Data != null)
{
builder.AddAttribute(6, nameof(CheckboxList <IEnumerable <string> > .Items), item.Data);
}
builder.AddMultipleAttributes(7, CreateMultipleAttributes(fieldType, fieldName, item));
builder.CloseComponent();
}
}
};
/// <summary>
/// RenderTreeBuilder 扩展方法 通过 IEditorItem 与 model 创建 Display 组件
/// </summary>
/// <param name="builder"></param>
/// <param name="item"></param>
/// <param name="model"></param>
public static void CreateDisplayByFieldType(this RenderTreeBuilder builder, IEditorItem item, object model)
{
var fieldType = item.PropertyType;
var fieldName = item.GetFieldName();
var displayName = item.GetDisplayName() ?? GetDisplayName(model, fieldName);
var fieldValue = GenerateValue(model, fieldName);
var type = (Nullable.GetUnderlyingType(fieldType) ?? fieldType);
if (type == typeof(bool) || fieldValue?.GetType() == typeof(bool))
{
builder.OpenComponent <Switch>(0);
builder.AddAttribute(1, nameof(Switch.Value), fieldValue);
builder.AddAttribute(2, nameof(Switch.IsDisabled), true);
builder.AddAttribute(3, nameof(Switch.DisplayText), displayName);
builder.AddAttribute(4, nameof(Switch.ShowLabelTooltip), item.ShowLabelTooltip);
builder.CloseComponent();
}
else if (item.ComponentType == typeof(Textarea))
{
builder.OpenComponent(0, typeof(Textarea));
builder.AddAttribute(1, nameof(Textarea.DisplayText), displayName);
builder.AddAttribute(2, nameof(Textarea.Value), fieldValue);
builder.AddAttribute(3, nameof(Textarea.ShowLabelTooltip), item.ShowLabelTooltip);
builder.AddAttribute(4, "readonly", true);
if (item.Rows > 0)
{
builder.AddAttribute(5, "rows", item.Rows);
}
builder.CloseComponent();
}
else
{
builder.OpenComponent(0, typeof(Display <>).MakeGenericType(fieldType));
builder.AddAttribute(1, nameof(Display <string> .DisplayText), displayName);
builder.AddAttribute(2, nameof(Display <string> .Value), fieldValue);
builder.AddAttribute(3, nameof(Display <string> .LookupServiceKey), item.LookupServiceKey);
builder.AddAttribute(4, nameof(Display <string> .ShowLabelTooltip), item.ShowLabelTooltip);
builder.CloseComponent();
}
}
private static void CreateProperty(this TypeBuilder typeBuilder, IEditorItem col, IEnumerable <CustomAttributeBuilder>?attributeBuilds = null) => CreateProperty(typeBuilder, col.GetFieldName(), col.PropertyType, attributeBuilds);
/// <summary>
/// RenderTreeBuilder 扩展方法 通过指定模型与属性生成编辑组件
/// </summary>
/// <param name="builder"></param>
/// <param name="model"></param>
/// <param name="component"></param>
/// <param name="item"></param>
/// <param name="changedType"></param>
/// <param name="isSearch"></param>
/// <param name="lookUpService"></param>
public static void CreateComponentByFieldType(this RenderTreeBuilder builder, ComponentBase component, IEditorItem item, object model, ItemChangedType changedType = ItemChangedType.Update, bool isSearch = false, ILookupService?lookUpService = null)
{
var fieldType = item.PropertyType;
var fieldName = item.GetFieldName();
var displayName = item.GetDisplayName() ?? GetDisplayName(model, fieldName);
var fieldValue = GenerateValue(model, fieldName);
var fieldValueChanged = GenerateValueChanged(component, model, fieldName, fieldType);
var valueExpression = GenerateValueExpression(model, fieldName, fieldType);
var lookup = item.Lookup ?? lookUpService?.GetItemsByKey(item.LookupServiceKey);
var componentType = item.ComponentType ?? GenerateComponentType(fieldType, item.Rows != 0, lookup);
builder.OpenComponent(0, componentType);
if (componentType.IsSubclassOf(typeof(ValidateBase <>).MakeGenericType(fieldType)))
{
builder.AddAttribute(1, nameof(ValidateBase <string> .DisplayText), displayName);
builder.AddAttribute(2, nameof(ValidateBase <string> .Value), fieldValue);
builder.AddAttribute(3, nameof(ValidateBase <string> .ValueChanged), fieldValueChanged);
builder.AddAttribute(4, nameof(ValidateBase <string> .ValueExpression), valueExpression);
if (!item.CanWrite(model.GetType(), changedType, isSearch))
{
builder.AddAttribute(5, nameof(ValidateBase <string> .IsDisabled), true);
}
if (item.ValidateRules != null)
{
builder.AddAttribute(6, nameof(ValidateBase <string> .ValidateRules), item.ValidateRules);
}
if (item.ShowLabelTooltip != null)
{
builder.AddAttribute(7, nameof(ValidateBase <string> .ShowLabelTooltip), item.ShowLabelTooltip);
}
}
if (componentType == typeof(NullSwitch) && TryGetProperty(model.GetType(), fieldName, out var propertyInfo))
{
// 读取默认值
var defaultValueAttr = propertyInfo.GetCustomAttribute <DefaultValueAttribute>();
if (defaultValueAttr != null)
{
var dv = defaultValueAttr.Value is bool v && v;
builder.AddAttribute(8, nameof(NullSwitch.DefaultValueWhenNull), dv);
}
}
if (IsCheckboxList(fieldType, componentType) && item.Items != null)
{
builder.AddAttribute(9, nameof(CheckboxList <IEnumerable <string> > .Items), item.Items.Clone());
}
// Nullabl<bool?>
if (item.ComponentType == typeof(Select <bool?>) && fieldType == typeof(bool?) && lookup == null && item.Items == null)
{
builder.AddAttribute(10, nameof(Select <bool?> .Items), GetNullableBoolItems(model, fieldName));
}
// Lookup
if (lookup != null && item.Items == null)
{
builder.AddAttribute(11, nameof(Select <SelectedItem> .Items), lookup.Clone());
builder.AddAttribute(12, nameof(Select <SelectedItem> .StringComparison), item.LookupStringComparison);
}
// 增加非枚举类,手动设定 ComponentType 为 Select 并且 Data 有值 自动生成下拉框
if (item.Items != null && item.ComponentType == typeof(Select <>).MakeGenericType(fieldType))
{
builder.AddAttribute(13, nameof(Select <SelectedItem> .Items), item.Items.Clone());
}
// 设置 SkipValidate 参数
if (IsValidatableComponent(componentType))
{
builder.AddAttribute(14, nameof(IEditorItem.SkipValidate), item.SkipValidate);
}
builder.AddMultipleAttributes(15, CreateMultipleAttributes(fieldType, model, fieldName, item));
if (item.ComponentParameters != null)
{
builder.AddMultipleAttributes(16, item.ComponentParameters);
}
builder.CloseComponent();
}
