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https://gitee.com/ant-design-blazor/ant-design-blazor.git
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360fe0d3c0
* refactor: rename JSInterop constants * docs: fix typo * fix: server prerendering issue
264 lines
8.5 KiB
C#
264 lines
8.5 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Runtime.CompilerServices;
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using System.Security.Cryptography;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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using AntDesign.JsInterop;
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using Microsoft.AspNetCore.Components;
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using Microsoft.AspNetCore.Components.Web;
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using Microsoft.JSInterop;
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using OneOf;
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namespace AntDesign
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{
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public partial class Mentions
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{
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[Parameter] public bool AutoFocus { get; set; }
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[Parameter] public bool Disable { get; set; }
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[Parameter] public bool Readonly { get; set; }
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[Parameter] public string Prefix { get; set; } = "@,#"; //“@,#”
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[Parameter] public string Split { get; set; } = " ";
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[Parameter] public string DefaultValue { get; set; }
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[Parameter] public string Placeholder { get; set; }
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[Parameter] public string Value { get; set; }
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[Parameter] public string Placement { get; set; } = "bottom";
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[Parameter] public string Direction { get; set; } = "ltr";
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[Parameter] public int Rows { get; set; } = 1;
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[Parameter] public bool Loading { get; set; } = false;
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[Parameter] public RenderFragment ChildContent { get; set; }
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[Parameter] public EventCallback<string> ValueChange { get; set; }
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[Parameter] public EventCallback<FocusEventArgs> OnFocus { get; set; }
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[Parameter] public EventCallback<FocusEventArgs> OnBlur { get; set; }
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[Parameter] public EventCallback<EventArgs> OnSearch { get; set; }
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[Parameter] public RenderFragment NoFoundContent { get; set; }
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public Dictionary<string, object> Attributes { get; set; }
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[Inject] private DomEventService DomEventService { get; set; }
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internal List<MentionsOption> LstOriginalOptions { get; set; } = new List<MentionsOption>();
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private string DropdownStyle { get; set; }
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private bool Focused { get; set; }
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private bool ShowSuggestions { get; set; }
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private void SetClassMap()
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{
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var prefixCls = "ant-mentions";
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this.ClassMapper.Clear()
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.Add(prefixCls)
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.If($"{prefixCls}-disable", () => this.Disable)
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.If($"{prefixCls}-focused", () => this.Focused)
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.If($"{prefixCls}-rtl", () => this.Direction == "rtl")
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;
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}
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protected override void OnInitialized()
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{
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base.OnInitialized();
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SetClassMap();
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if (string.IsNullOrEmpty(Value))
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{
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Value = DefaultValue;
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}
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//DomEventService.AddEventListener(Ref, "keyup", OnTextAreaKeyup);
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// DomEventService.AddEventListener(Ref, "onmouseup", OnTextAreaMouseUp);
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}
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internal bool FirstTime { get; set; } = true;
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protected override Task OnFirstAfterRenderAsync()
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{
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base.OnFirstAfterRenderAsync();
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FirstTime = false;
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return Task.CompletedTask;
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}
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/// <summary>
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/// After Press keyUP, if a key is prefix, to popup the suggestion
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/// </summary>
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/// <param name="args"></param>
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/// <returns></returns>
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private async Task OnKeyUp(KeyboardEventArgs args)
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{
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if (args == null) return;
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if (Prefix.Contains(args.Key, StringComparison.Ordinal))
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{
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await SetDropdownStyle();
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ShowSuggestions = Prefix.Contains(args.Key, StringComparison.Ordinal);
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await InvokeStateHasChangedAsync();
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}
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if (!string.IsNullOrEmpty(Value))
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{
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var suggestions = this.Value.Split(Split);
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}
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await ValueChange.InvokeAsync(this.Value);
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}
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private async Task OnKeyDown(KeyboardEventArgs args)
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{
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await InvokeStateHasChangedAsync();
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}
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DotNetObjectReference<Mentions> _reference;
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const string ReferenceName = "mentions";
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protected async Task SetDropdownStyle()
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{
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if (_reference == null)
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{
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_reference = DotNetObjectReference.Create<Mentions>(this);
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}
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//get current dom element infomation
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var domRect = await JsInvokeAsync<double[]>(JSInteropConstants.GetCursorXY, Ref, _reference);
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var left = Math.Round(domRect[0]);
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var top = Math.Round(domRect[1]);
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//DropdownStyle = $"display:inline-flex;position:fixed;top:{top}px;left:{left}px;transform:translate({cursorPoint.x}px, {cursorPoint.y}0px);";
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DropdownStyle = $"display:inline-flex;position:fixed;top:{top}px;left:{left}px;transform:translate(0px, 0px);";
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}
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/// <summary>
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/// open or close the list of Suggestion
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/// </summary>
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/// <param name="show"></param>
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/// <returns></returns>
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internal async Task ShowSuggestion(bool show)
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{
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ShowSuggestions = show;
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await InvokeStateHasChangedAsync();
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}
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internal async Task GetSuggestion()
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{
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="opt"></param>
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/// <returns></returns>
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internal async Task OnOptionClick(MentionsOption opt)
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{
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// update to status of all of suggestion to un-selected state
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foreach (var item in LstOriginalOptions)
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{
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item.Selected = false;
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}
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// when the suggestion clicked is not null and enable, then change the value of textarea.
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if (opt != null && !opt.Disable)
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{
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if (string.IsNullOrEmpty(this.Value))
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{
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this.Value = opt.Value + this.Split;
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}
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else
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{
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this.Value = this.Value + opt.Value + this.Split;
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}
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}
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ShowSuggestions = false;
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await InvokeStateHasChangedAsync();
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}
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private void OnKeyPress(KeyboardEventArgs args)
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{
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Console.WriteLine(args.Key);
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if (args == null) return;
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if (ValueChange.HasDelegate)
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ValueChange.InvokeAsync(args.Code);
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return;
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}
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protected override Task OnParametersSetAsync()
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{
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return base.OnParametersSetAsync();
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}
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/// <summary>
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/// return a new list of mentionsOption, when all item included the specificed text
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/// </summary>
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/// <param name="textValue"></param>
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/// <returns></returns>
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private List<MentionsOption> IsIncluded(string textValue)
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{
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if (string.IsNullOrEmpty(textValue))
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{
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return LstOriginalOptions;
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}
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List<MentionsOption> lst = new List<MentionsOption>();
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foreach (var item in LstOriginalOptions)
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{
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if (item.Value.Contains(textValue, StringComparison.Ordinal))
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{
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lst.Add(item);
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}
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}
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return lst;
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}
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public void RemoveOption(MentionsOption option)
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{
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LstOriginalOptions.Remove(option);
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}
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public void AddOption(MentionsOption option)
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{
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if (option == null) return;
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var opt = LstOriginalOptions.Find(x => x.Value == option.Value);
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if (opt == null)
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{
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LstOriginalOptions.Add(option);
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}
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}
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internal async void Onfocus(FocusEventArgs args)
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{
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if (args == null) return;
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Focused = true;
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if (OnFocus.HasDelegate)
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await OnFocus.InvokeAsync(args);
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await JsInvokeAsync(JSInteropConstants.Focus, Ref);
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StateHasChanged();
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}
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internal async void Onblur(FocusEventArgs args)
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{
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if (args == null) return;
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Focused = false;
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if (OnBlur.HasDelegate)
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await OnBlur.InvokeAsync(args);
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await JsInvokeAsync(JSInteropConstants.Blur, Ref);
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StateHasChanged();
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}
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[JSInvokable]
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public void CloseMentionsDropDown()
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{
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ShowSuggestions = false;
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StateHasChanged();
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}
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protected override void Dispose(bool disposing)
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{
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_reference = null;
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_ = JsInvokeAsync(JSInteropConstants.DisposeObj, ReferenceName);
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base.Dispose(disposing);
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}
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}
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}
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