From 24ae4ec15c10b7c6b3925ac38ea443403a6cd1d4 Mon Sep 17 00:00:00 2001
From: masoodafar-web <masoud.afarin.moghaddam@outlook.com>
Date: Sun, 9 Aug 2026 00:02:54 +0330
Subject: [PATCH] feat(date-range-picker): enhance date range picker
 functionality with external parameters and notifications

- Added support for external From and To parameters to synchronize date range selections.
- Implemented OnParametersSet to handle updates from parent components without triggering unnecessary updates.
- Introduced NotifyRangeChangedAsync to streamline notifications for date range changes.
- Refactored date range application logic to improve clarity and maintainability.
---
 .../BaseComponents/DateRangePicker.razor.cs   | 65 +++++++++++++++----
 1 file changed, 53 insertions(+), 12 deletions(-)

diff --git a/src/BackOffice/Common/BaseComponents/DateRangePicker.razor.cs b/src/BackOffice/Common/BaseComponents/DateRangePicker.razor.cs
index 39cd928..d7d31dc 100644
--- a/src/BackOffice/Common/BaseComponents/DateRangePicker.razor.cs
+++ b/src/BackOffice/Common/BaseComponents/DateRangePicker.razor.cs
@@ -8,21 +8,46 @@ namespace BackOffice.Common.BaseComponents;
 public partial class DateRangePicker
 {
     private DateRange _dateRange = new();
+    private MudDateRangePicker _picker = default!;
+    private DateTime? _lastSyncedFrom;
+    private DateTime? _lastSyncedTo;
 
-    private MudDateRangePicker _picker;
     [Parameter] public string Label { get; set; } = "انتخاب بازه زمانی";
     [Parameter] public DateTime? DefaultStart { get; set; }
     [Parameter] public DateTime? DefaultEnd { get; set; }
     [Parameter] public EventCallback<DateRange> OnChanged { get; set; }
+
+    [Parameter] public DateTime? From { get; set; }
+    [Parameter] public EventCallback<DateTime?> FromChanged { get; set; }
+    [Parameter] public DateTime? To { get; set; }
+    [Parameter] public EventCallback<DateTime?> ToChanged { get; set; }
+
     protected override void OnInitialized()
     {
         base.OnInitialized();
-        if (DefaultStart.HasValue)
-            _dateRange.Start = DefaultStart.Value.Date;
-
-        if (DefaultEnd.HasValue)
-            _dateRange.End = DefaultEnd.Value.Date;
+        var start = From ?? DefaultStart;
+        var end = To ?? DefaultEnd;
+        ApplyExternalRange(start, end);
+        _lastSyncedFrom = From;
+        _lastSyncedTo = To;
     }
+
+    protected override void OnParametersSet()
+    {
+        // فقط وقتی والد From/To را عوض کرده (مثلاً پاک کردن فیلتر)، نه هنگام انتخاب داخل پیکر
+        if (From == _lastSyncedFrom && To == _lastSyncedTo)
+            return;
+
+        _lastSyncedFrom = From;
+        _lastSyncedTo = To;
+        ApplyExternalRange(From, To);
+    }
+
+    private void ApplyExternalRange(DateTime? start, DateTime? end)
+    {
+        _dateRange = new DateRange(start?.Date, end?.Date);
+    }
+
     public CultureInfo GetPersianCulture()
     {
         var culture = new CultureInfo("fa-IR");
@@ -53,19 +78,35 @@ public partial class DateRangePicker
         culture.NumberFormat.NumberNegativePattern = 0;
         return culture;
     }
+
     private async Task OnClickOK()
     {
-        if (_picker.DateRange is not null)
-        {
-            await OnChanged.InvokeAsync(_picker.DateRange);
-        }
-
+        var range = _picker.DateRange ?? _dateRange;
+        _dateRange = range ?? new DateRange();
+        await NotifyRangeChangedAsync(_dateRange);
         await _picker.CloseAsync();
     }
+
     private async Task OnClickClear()
     {
         _dateRange = new DateRange();
-        await OnChanged.InvokeAsync(_dateRange);
+        await NotifyRangeChangedAsync(_dateRange);
         await _picker.CloseAsync();
     }
+
+    private async Task NotifyRangeChangedAsync(DateRange range)
+    {
+        var start = range.Start?.Date;
+        var end = range.End?.Date;
+
+        _lastSyncedFrom = start;
+        _lastSyncedTo = end;
+
+        if (From != start)
+            await FromChanged.InvokeAsync(start);
+        if (To != end)
+            await ToChanged.InvokeAsync(end);
+
+        await OnChanged.InvokeAsync(range);
+    }
 }