CanRead/BlazorApp/Components/Pages/Can.razor
2026-01-23 11:20:08 +07:00

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@page "/can"
@inject ICanService CanService
@implements IDisposable
<div class="container mt-4">
<div class="card shadow-sm">
<!-- HEADER -->
<div class="card-header d-flex justify-content-between align-items-center">
<h5 class="mb-0">CAN Monitor (Live View)</h5>
<div>
<button class="btn btn-success btn-sm me-2"
@onclick="Start"
disabled="@isRunning">
▶ Start
</button>
<button class="btn btn-danger btn-sm"
@onclick="Stop"
disabled="@(!isRunning)">
■ Stop
</button>
</div>
</div>
<!-- TABLE -->
<div class="card-body p-0" style="max-height: 420px; overflow-y: auto;">
<table class="table table-striped table-hover table-sm mb-0">
<thead class="table-dark sticky-top">
<tr>
<th style="width:140px">Time</th>
<th style="width:80px">CAN-ID</th>
<th style="width:120px">Meaning</th>
<th style="width:60px">Length</th>
<th>Raw Data</th>
<th style="width:200px">Result</th>
</tr>
</thead>
<tbody>
@foreach (var msg in messages.Values.OrderBy(m => m.Id))
{
<tr>
<td>@msg.Timestamp.ToString("HH:mm:ss.fff")</td>
<td class="fw-bold text-primary">
@msg.Id.ToString("X3")
</td>
<td>@msg.Meaning</td>
<td>@msg.Length</td>
<td class="font-monospace">
@BitConverter.ToString(
msg.Data.Take(msg.Length).ToArray())
</td>
<td class="fw-semibold">
@msg.ValueText
</td>
</tr>
}
</tbody>
</table>
</div>
<!-- FOOTER -->
<div class="card-footer text-muted small d-flex justify-content-between">
<span>Total CAN IDs: <b>@messages.Count</b></span>
<span>Status: <b>@status</b></span>
</div>
</div>
</div>
@code {
// DATA STORAGE (1 ID = 1 ROW)
private Dictionary<uint, CanMessage> messages = new();
private bool isRunning = false;
private string status = "STOPPED";
// INIT
protected override void OnInitialized()
{
CanService.OnMessageReceived += OnCanMessage;
}
// RECEIVE CAN FRAME
private void OnCanMessage(CanMessage msg)
{
InvokeAsync(() =>
{
// 🔴 Update data on the SAME row by CAN-ID
messages[msg.Id] = msg;
StateHasChanged();
});
}
// START
private async Task Start()
{
if (isRunning) return;
status = "INITIALIZING...";
StateHasChanged();
await CanService.InitAsync(); // BẮT BUỘC
CanService.StartStream();
isRunning = true;
status = "RUNNING";
}
// STOP
private void Stop()
{
if (!isRunning) return;
CanService.StopStream();
isRunning = false;
status = "STOPPED";
}
// CLEANUP
public void Dispose()
{
CanService.OnMessageReceived -= OnCanMessage;
CanService.StopStream();
}
}