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https://gitee.com/ant-design-blazor/ant-design-blazor.git
synced 2024-12-15 09:21:24 +08:00
213 lines
5.8 KiB
C#
213 lines
5.8 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using AntDesign.Core.Reflection;
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using AntDesign.Forms;
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using AntDesign.Internal;
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using Microsoft.AspNetCore.Components;
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using Microsoft.AspNetCore.Components.Forms;
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using OneOf;
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namespace AntDesign
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{
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public partial class FormItem : AntDomComponentBase, IFormItem
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{
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private static readonly Dictionary<string, object> _noneColAttributes = new Dictionary<string, object>();
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private readonly string _prefixCls = "ant-form-item";
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[CascadingParameter(Name = "Form")]
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private IForm Form { get; set; }
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[CascadingParameter(Name = "FormItem")]
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private IFormItem ParentFormItem { get; set; }
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[CascadingParameter]
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private EditContext CurrentEditContext { get; set; }
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[Parameter]
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public RenderFragment ChildContent { get; set; }
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[Parameter]
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public string Label { get; set; }
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[Parameter]
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public ColLayoutParam LabelCol { get; set; }
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[Parameter]
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public OneOf<string, int> LabelColSpan
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{
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get { return LabelCol?.Span ?? null; }
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set
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{
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if (LabelCol == null) LabelCol = new ColLayoutParam();
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LabelCol.Span = value;
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}
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}
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[Parameter]
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public OneOf<string, int> LabelColOffset
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{
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get { return LabelCol?.Offset ?? null; }
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set
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{
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if (LabelCol == null) LabelCol = new ColLayoutParam();
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LabelCol.Offset = value;
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}
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}
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[Parameter]
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public ColLayoutParam WrapperCol { get; set; }
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[Parameter]
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public OneOf<string, int> WrapperColSpan
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{
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get { return WrapperCol?.Span ?? null; }
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set
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{
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if (WrapperCol == null) WrapperCol = new ColLayoutParam();
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WrapperCol.Span = value;
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}
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}
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[Parameter]
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public OneOf<string, int> WrapperColOffset
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{
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get { return WrapperCol?.Offset ?? null; }
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set
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{
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if (WrapperCol == null) WrapperCol = new ColLayoutParam();
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WrapperCol.Offset = value;
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}
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}
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[Parameter]
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public bool NoStyle { get; set; } = false;
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[Parameter]
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public bool Required { get; set; } = false;
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private EditContext EditContext => Form?.EditContext;
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private bool _isValid = true;
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private string _labelCls = "";
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private IControlValueAccessor _control;
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private RenderFragment _formValidationMessages;
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private PropertyReflector _propertyReflector;
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protected override void OnInitialized()
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{
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base.OnInitialized();
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if (Form == null)
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{
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throw new InvalidOperationException("Form is null.FormItem should be childContent of Form.");
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}
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Form.AddFormItem(this);
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}
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protected override void OnParametersSet()
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{
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base.OnParametersSet();
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SetClass();
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}
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protected void SetClass()
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{
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this.ClassMapper.Clear()
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.Add(_prefixCls)
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.If($"{_prefixCls}-with-help {_prefixCls}-has-error", () => _isValid == false)
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;
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}
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private Dictionary<string, object> GetLabelColAttributes()
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{
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if (NoStyle || ParentFormItem != null)
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{
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return _noneColAttributes;
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}
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ColLayoutParam labelColParameter;
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if (LabelCol != null)
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{
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labelColParameter = LabelCol;
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}
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else if (Form.LabelCol != null)
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{
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labelColParameter = Form.LabelCol;
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}
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else
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{
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labelColParameter = new ColLayoutParam();
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}
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return labelColParameter.ToAttributes();
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}
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private Dictionary<string, object> GetWrapperColAttributes()
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{
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if (NoStyle || ParentFormItem != null)
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{
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return _noneColAttributes;
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}
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ColLayoutParam wrapperColParameter;
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if (WrapperCol != null)
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{
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wrapperColParameter = WrapperCol;
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}
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else if (Form.WrapperCol != null)
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{
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wrapperColParameter = Form.WrapperCol;
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}
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else
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{
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wrapperColParameter = new ColLayoutParam();
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}
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return wrapperColParameter.ToAttributes();
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}
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void IFormItem.AddControl<TValue>(AntInputComponentBase<TValue> control)
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{
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if (control.FieldIdentifier.Model == null)
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{
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throw new InvalidOperationException($"Please use @bind-Value in the control with generic type `{typeof(TValue)}`.");
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}
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this._control = control;
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CurrentEditContext.OnValidationStateChanged += (s, e) =>
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{
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control.ValidationMessages = CurrentEditContext.GetValidationMessages(control.FieldIdentifier).ToArray();
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this._isValid = !control.ValidationMessages.Any();
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StateHasChanged();
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};
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_formValidationMessages = builder =>
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{
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var i = 0;
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builder.OpenComponent<FormValidationMessage<TValue>>(i++);
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builder.AddAttribute(i++, "Control", control);
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builder.CloseComponent();
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};
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_propertyReflector = PropertyReflector.Create(control.ValueExpression);
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if (_propertyReflector.RequiredAttribute != null)
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{
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_labelCls = $"{_prefixCls}-required";
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}
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}
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}
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}
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