using System; using System.Collections.Generic; using System.Globalization; using System.Linq; using System.Text.Json; using System.Threading.Tasks; using AntDesign.core.Extensions; using AntDesign.Core.Helpers; using AntDesign.JsInterop; using Microsoft.AspNetCore.Components; using Microsoft.AspNetCore.Components.Web; namespace AntDesign { public partial class Slider : AntInputComponentBase { private const string PreFixCls = "ant-slider"; private Element _sliderDom; private Element _leftHandleDom; private Element _rightHandleDom; private ElementReference _leftHandle; private ElementReference _rightHandle; private string _leftHandleStyle = "left: 0%; right: auto; transform: translateX(-50%);"; private string _rightHandleStyle = "left: 0%; right: auto; transform: translateX(-50%);"; private string _trackStyle = "left: 0%; width: 0%; right: auto;"; private bool _mouseDown; private bool _mouseMove; private bool _right = true; private bool _initialized = false; private double _initialLeftValue; private double _initialRightValue; private Tooltip _toolTipRight; private Tooltip _toolTipLeft; private string RightHandleStyleFormat { get { if (Reverse) { if (Vertical) { return "bottom: auto; top: {0}; transform: translateY(-50%);"; } else { return "right: {0}; left: auto; transform: translateX(50%);"; } } else { if (Vertical) { return "top: auto; bottom: {0}; transform: translateY(50%);"; } else { return "left: {0}; right: auto; transform: translateX(-50%);"; } } } } private string LeftHandleStyleFormat { get { if (Reverse) { if (Vertical) { return "bottom: auto; top: {0}; transform: translateY(-50%);"; } else { return "right: {0}; left: auto; transform: translateX(50%);"; } } else { if (Vertical) { return "top: auto; bottom: {0}; transform: translateY(50%);"; } else { return "left: {0}; right: auto; transform: translateX(-50%);"; } } } } private string TrackStyleFormat { get { if (Reverse) { if (Vertical) { return "bottom: auto; height: {1}; top: {0};"; } else { return "right: {0}; width: {1}; left: auto;"; } } else { if (Vertical) { return "top: auto; height: {1}; bottom: {0};"; } else { return "left: {0}; width: {1}; right: auto;"; } } } } [Inject] private DomEventService DomEventService { get; set; } #region Parameters /// /// The default value of slider. When is false, use number, otherwise, use [number, number] /// [Parameter] public TValue DefaultValue { get; set; } /// /// If true, the slider will not be interactable /// [Parameter] public bool Disabled { get; set; } /// /// Whether the thumb can drag over tick only /// [Parameter] public bool Dots { get; set; } /// /// Make effect when not null, true means containment and false means coordinative /// [Parameter] public bool Included { get; set; } = true; /// /// Tick mark of Slider, type of key must be number, and must in closed interval [min, max], each mark can declare its own style /// [Parameter] public SliderMark[] Marks { get; set; } /// /// The maximum value the slider can slide to /// [Parameter] public double Max { get; set; } = 100; /// /// The minimum value the slider can slide to /// [Parameter] public double Min { get; set; } = 0; /// /// dual thumb mode /// //[Parameter] private bool? _range; public bool Range { get { if (_range == null) { Type type = typeof(TValue); Type doubleType = typeof(double); Type tupleDoubleType = typeof((double, double)); if (type == doubleType) { _range = false; } else if (type == tupleDoubleType) { _range = true; } else { throw new ArgumentOutOfRangeException($"Type argument of Slider should be one of {doubleType}, {tupleDoubleType}"); } } return _range.Value; } //private set { _range = value; } } /// /// reverse the component /// private bool _reverse; [Parameter] public bool Reverse { get { return _reverse; } set { if (_reverse != value) { _reverse = value; SetStyle(); } } } /// /// The granularity the slider can step through values. Must greater than 0, and be divided by ( - ) . When no null, can be null. /// private double? _step = 1; private int _precision; [Parameter] public double? Step { get { return _step; } set { _step = value; //no need to evaluate if no tooltip if (_step != null && _isTipFormatterDefault) { char separator = CultureInfo.CurrentCulture.NumberFormat.NumberDecimalSeparator[0]; string[] number = _step.ToString().Split(separator); if (number.Length > 1) { _precision = number[1].Length; _tipFormatter = (d) => string.Format(CultureInfo.CurrentCulture, "{0:N02}", Math.Round(d, _precision)); } } } } private double _leftValue = double.MinValue; private double LeftValue { get => _leftValue; set { double candidate = Clamp(value, Min, Max); if (_leftValue != candidate) { _leftValue = candidate; SetStyle(); (double, double) typedValue = DataConvertionExtensions.Convert(CurrentValue); if (value != typedValue.Item1) CurrentValue = DataConvertionExtensions.Convert<(double, double), TValue>((_leftValue, RightValue)); if (_toolTipLeft != null) _toolTipLeft.ChildElementMoved(); } } } private double _rightValue = double.MaxValue; // the default non-range value private double RightValue { get => _rightValue; set { double candidate; if (Range) { candidate = Clamp(value, LeftValue, Max); } else { candidate = Clamp(value, Min, Max); } if (_rightValue != candidate) { _rightValue = candidate; SetStyle(); if (Range) { //CurrentValue = TupleToGeneric((LeftValue, _rightValue)); (double, double) typedValue = DataConvertionExtensions.Convert(CurrentValue); if (value != typedValue.Item2) CurrentValue = DataConvertionExtensions.Convert<(double, double), TValue>((LeftValue, _rightValue)); } else { double typedValue = DataConvertionExtensions.Convert(CurrentValue); if (value != typedValue) //CurrentValue = DoubleToGeneric(_rightValue); CurrentValue = DataConvertionExtensions.Convert(_rightValue); } if (_toolTipRight != null) _toolTipRight.ChildElementMoved(); } } } private double Clamp( double value, double inclusiveMinimum, double inclusiveMaximum) { if (value < inclusiveMinimum) { value = inclusiveMinimum; } if (value > inclusiveMaximum) { value = inclusiveMaximum; } return GetNearestStep(value); } /// /// If true, the slider will be vertical. /// [Parameter] public bool Vertical { get; set; } /// /// Fire when onmouseup is fired. /// [Parameter] public Action OnAfterChange { get; set; } //use Action here intead of EventCallback, otherwise VS will not complie when user add a delegate /// /// Callback function that is fired when the user changes the slider's value. /// [Parameter] public Action OnChange { get; set; } [Parameter] public bool HasTooltip { get; set; } = true; /// /// Slider will pass its value to tipFormatter, and display its value in Tooltip /// private bool _isTipFormatterDefault = true; private Func _tipFormatter = (d) => d.ToString(LocaleProvider.CurrentLocale.CurrentCulture); [Parameter] public Func TipFormatter { get { return _tipFormatter; } set { _tipFormatter = value; _isTipFormatterDefault = false; } } /// /// Set Tooltip display position. Ref Tooltip /// [Parameter] public PlacementType TooltipPlacement { get; set; } /// /// If true, Tooltip will show always, or it will not show anyway, even if dragging or hovering. /// private bool _tooltipVisible; private bool _tooltipRightVisible; private bool _tooltipLeftVisible; [Parameter] public bool TooltipVisible { get { return _tooltipVisible; } set { if (_tooltipVisible != value) { _tooltipVisible = value; //ensure parameter loading is not happening because values are changing during mouse moving //otherwise the tooltip will be vanishing when mouse moves out of the edge if (!_mouseDown) { _tooltipRightVisible = _tooltipVisible; _tooltipLeftVisible = _tooltipVisible; } } } } /// /// The DOM container of the Tooltip, the default behavior is to create a div element in body. /// [Parameter] public object GetTooltipPopupContainer { get; set; } #endregion Parameters protected override void OnInitialized() { base.OnInitialized(); } public async override Task SetParametersAsync(ParameterView parameters) { await base.SetParametersAsync(parameters); var dict = parameters.ToDictionary(); if (!_initialized) { if (!dict.ContainsKey(nameof(Value))) { TValue defaultValue; if (Range) { //if (typeof(T) == typeof((int, int))) //{ // defaultValue = parameters.GetValueOrDefault(nameof(DefaultValue), DataConvertionExtensions.Convert<(int, int), T>((0, 0))); //} //else //{ defaultValue = parameters.GetValueOrDefault(nameof(DefaultValue), DataConvertionExtensions.Convert<(double, double), TValue>((0, 0))); //} LeftValue = DataConvertionExtensions.Convert(defaultValue).Item1; RightValue = DataConvertionExtensions.Convert(defaultValue).Item2; } else { //if (typeof(T) == typeof(int)) //{ // defaultValue = parameters.GetValueOrDefault(nameof(DefaultValue), DataConvertionExtensions.Convert(0)); //} //else //{ defaultValue = parameters.GetValueOrDefault(nameof(DefaultValue), DataConvertionExtensions.Convert(0)); //} RightValue = DataConvertionExtensions.Convert(defaultValue); } } else { if (Range) { LeftValue = DataConvertionExtensions.Convert(CurrentValue).Item1; RightValue = DataConvertionExtensions.Convert(CurrentValue).Item2; } else { RightValue = DataConvertionExtensions.Convert(CurrentValue); } } if (!dict.ContainsKey(nameof(TooltipPlacement))) { if (Vertical) TooltipPlacement = PlacementType.Right; else TooltipPlacement = PlacementType.Top; } } _initialized = true; } protected override void OnParametersSet() { base.OnParametersSet(); ValidateParameter(); ClassMapper.Clear() .Add(PreFixCls) .If($"{PreFixCls}-disabled", () => Disabled) .If($"{PreFixCls}-vertical", () => Vertical) .If($"{PreFixCls}-with-marks", () => Marks != null) .If($"{PreFixCls}-rtl", () => RTL); } protected override void OnAfterRender(bool firstRender) { if (firstRender) { DomEventService.AddEventListener("window", "mousemove", OnMouseMove, false); DomEventService.AddEventListener("window", "mouseup", OnMouseUp, false); } base.OnAfterRender(firstRender); } protected override void Dispose(bool disposing) { DomEventService.RemoveEventListerner("window", "mousemove", OnMouseMove); DomEventService.RemoveEventListerner("window", "mouseup", OnMouseUp); base.Dispose(disposing); } protected override async Task OnAfterRenderAsync(bool firstRender) { if (!firstRender) { if (_toolTipRight != null && HasTooltip) { _rightHandle = _toolTipRight.Ref; await _toolTipRight.ChildElementMoved(); if (_toolTipLeft != null) { _leftHandle = _toolTipLeft.Ref; await _toolTipLeft.ChildElementMoved(); } } } await base.OnAfterRenderAsync(firstRender); } private void ValidateParameter() { if (Step == null && Marks == null) { throw new ArgumentOutOfRangeException(nameof(Step), $"{nameof(Step)} can only be null when {nameof(Marks)} is not null."); } if (Step <= 0) { throw new ArgumentOutOfRangeException(nameof(Step), "Must greater than 0."); } if (Step != null && (Max - Min) / Step % 1 != 0) { throw new ArgumentOutOfRangeException(nameof(Step), $"Must be divided by ({Max} - {Min})."); } } private async void OnMouseDown(MouseEventArgs args) { //// _sliderDom = await JsInvokeAsync(JSInteropConstants.GetBoundingClientRect, _slider); //_sliderDom = await JsInvokeAsync(JSInteropConstants.GetDomInfo, _slider); //decimal x = (decimal)args.ClientX; //decimal y = (decimal)args.ClientY; //_mouseDown = !Disabled // && _sliderDom.clientLeft <= x && x <= _sliderDom.clientLeft + _sliderDom.clientWidth // && _sliderDom.clientTop <= y && y <= _sliderDom.clientTop + _sliderDom.clientHeight; _mouseDown = !Disabled; } private double _trackedClientX; private double _trackedClientY; private void OnMouseDownEdge(MouseEventArgs args, bool right) { _right = right; _initialLeftValue = _leftValue; _initialRightValue = _rightValue; _trackedClientX = args.ClientX; _trackedClientY = args.ClientY; if (_toolTipRight != null) { if (_right) { _tooltipRightVisible = true; } else { _tooltipLeftVisible = true; } } } private bool IsMoveInEdgeBoundary(JsonElement jsonElement) { double clientX = jsonElement.GetProperty("clientX").GetDouble(); double clientY = jsonElement.GetProperty("clientY").GetDouble(); return (clientX == _trackedClientX && clientY == _trackedClientY); } private async void OnMouseMove(JsonElement jsonElement) { if (_mouseDown) { _trackedClientX = jsonElement.GetProperty("clientX").GetDouble(); _trackedClientY = jsonElement.GetProperty("clientY").GetDouble(); _mouseMove = true; await CalculateValueAsync(Vertical ? jsonElement.GetProperty("pageY").GetDouble() : jsonElement.GetProperty("pageX").GetDouble()); OnChange?.Invoke(CurrentValue); } } private async void OnMouseUp(JsonElement jsonElement) { bool isMoveInEdgeBoundary = IsMoveInEdgeBoundary(jsonElement); if (_mouseDown) { _mouseDown = false; if (!isMoveInEdgeBoundary) { await CalculateValueAsync(Vertical ? jsonElement.GetProperty("pageY").GetDouble() : jsonElement.GetProperty("pageX").GetDouble()); OnAfterChange?.Invoke(CurrentValue); } } if (_toolTipRight != null) { if (_tooltipRightVisible != TooltipVisible) { _tooltipRightVisible = TooltipVisible; _toolTipRight.SetVisible(TooltipVisible); } if (_tooltipLeftVisible != TooltipVisible) { _tooltipLeftVisible = TooltipVisible; _toolTipLeft.SetVisible(TooltipVisible); } } _initialLeftValue = _leftValue; _initialRightValue = _rightValue; } private async Task CalculateValueAsync(double clickClient) { _sliderDom = await JsInvokeAsync(JSInteropConstants.GetDomInfo, Ref); double sliderOffset = (double)(Vertical ? _sliderDom.absoluteTop : _sliderDom.absoluteLeft); double sliderLength = (double)(Vertical ? _sliderDom.clientHeight : _sliderDom.clientWidth); double handleNewPosition; if (_right) { if (_rightHandleDom == null) { _rightHandleDom = await JsInvokeAsync(JSInteropConstants.GetDomInfo, _rightHandle); } if (Reverse) { if (Vertical) { handleNewPosition = clickClient - sliderOffset; } else { handleNewPosition = sliderLength - (clickClient - sliderOffset); } } else { if (Vertical) { handleNewPosition = sliderOffset + sliderLength - clickClient; } else { handleNewPosition = clickClient - sliderOffset; } } double rightV = Max * handleNewPosition / sliderLength; if (rightV < LeftValue) { _right = false; if (_mouseDown) RightValue = _initialLeftValue; LeftValue = rightV; await FocusAsync(_leftHandle); } else { RightValue = rightV; } } else { if (_leftHandleDom == null) { _leftHandleDom = await JsInvokeAsync(JSInteropConstants.GetDomInfo, _leftHandle); } if (_rightHandleDom == null) { _rightHandleDom = await JsInvokeAsync(JSInteropConstants.GetDomInfo, _rightHandle); } if (Reverse) { if (Vertical) { handleNewPosition = clickClient - sliderOffset; } else { handleNewPosition = sliderLength - (clickClient - sliderOffset); } } else { if (Vertical) { handleNewPosition = sliderOffset + sliderLength - clickClient; } else { handleNewPosition = clickClient - sliderOffset; } } double leftV = Max * handleNewPosition / sliderLength; if (leftV > RightValue) { _right = true; if (_mouseDown) LeftValue = _initialRightValue; RightValue = leftV; await FocusAsync(_rightHandle); } else { LeftValue = leftV; } } } private void SetStyle() { _rightHandleStyle = string.Format(CultureInfo.CurrentCulture, RightHandleStyleFormat, Formatter.ToPercentWithoutBlank(RightValue / Max)); if (Range) { _trackStyle = string.Format(CultureInfo.CurrentCulture, TrackStyleFormat, Formatter.ToPercentWithoutBlank(LeftValue / Max), Formatter.ToPercentWithoutBlank((RightValue - LeftValue) / Max)); _leftHandleStyle = string.Format(CultureInfo.CurrentCulture, LeftHandleStyleFormat, Formatter.ToPercentWithoutBlank(LeftValue / Max)); } else { _trackStyle = string.Format(CultureInfo.CurrentCulture, TrackStyleFormat, "0%", Formatter.ToPercentWithoutBlank(RightValue / Max)); } StateHasChanged(); } private string SetMarkPosition(double key) { return Formatter.ToPercentWithoutBlank(key / Max); } private string IsActiveMark(double key) { bool active = (Range && key >= LeftValue && key <= RightValue) || (!Range && key <= RightValue); return active ? "ant-slider-dot-active" : string.Empty; } private double GetNearestStep(double value) { if (Step.HasValue && (Marks == null || Marks.Length == 0)) { return Math.Round(value / Step.Value, 0) * Step.Value; } else if (Step.HasValue) { return new double[2] { Math.Round(value / Step.Value) * Step.Value, Math.Round(value / Step.Value + 1) * Step.Value }.Union(Marks.Select(m => m.Key)).OrderBy(v => Math.Abs(v - value)).First(); } else if (Marks.Length == 0) { return Min; } else { return Marks.Select(m => m.Key).OrderBy(v => Math.Abs(v - value)).First(); } } protected override void OnValueChange(TValue value) { base.OnValueChange(value); if (Range) { if (IsLeftAndRightChanged(value)) { _leftValue = double.MinValue; _rightValue = double.MaxValue; } LeftValue = DataConvertionExtensions.Convert(value).Item1; RightValue = DataConvertionExtensions.Convert(value).Item2; } else { RightValue = DataConvertionExtensions.Convert(value); } } private bool IsLeftAndRightChanged(TValue value) { (double, double) typedValue = DataConvertionExtensions.Convert(value); return (typedValue.Item1 != LeftValue) && (typedValue.Item2 != RightValue); } private TValue _value; /// /// Gets or sets the value of the input. This should be used with two-way binding. /// /// /// @bind-Value="model.PropertyName" /// [Parameter] public sealed override TValue Value { get { return _value; } set { TValue orderedValue = SortValue(value); var hasChanged = !EqualityComparer.Default.Equals(orderedValue, Value); if (hasChanged) { _value = orderedValue; OnValueChange(orderedValue); } } } private TValue SortValue(TValue value) { TValue orderedValue = value; if (Range) { //sort if needed (double, double) typedValue = DataConvertionExtensions.Convert(value); if (typedValue.Item1 > typedValue.Item2) { orderedValue = DataConvertionExtensions.Convert<(double, double), TValue>((typedValue.Item2, typedValue.Item1)); } } return orderedValue; } } }