Burak Kaan Köse
93 lines
3.5 KiB
C#
93 lines
3.5 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Diagnostics.CodeAnalysis;
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using System.Drawing.Printing;
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using System.Linq;
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using System.Threading.Tasks;
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using Microsoft.UI.Xaml;
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using Wino.Core.Domain.Models.Printing;
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using Wino.Core.WinUI.Dialogs;
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using Wino.Core.WinUI.Interfaces;
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namespace Wino.Core.WinUI.Services;
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/// <summary>
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/// Service implementation for displaying the custom print dialog and managing print settings.
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/// </summary>
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public class PrintDialogService : IPrintDialogService
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{
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/// <summary>
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/// Shows the print dialog and returns the configured print settings.
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/// </summary>
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/// <param name="initialSettings">Initial print settings to populate the dialog with. If null, default settings will be used.</param>
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/// <param name="availablePrinters">List of available printers to show in the dialog. If null or empty, the service will discover printers.</param>
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/// <returns>
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/// A task that resolves to the configured WebView2PrintSettingsModel if the user clicked Print,
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/// or null if the user cancelled the dialog.
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/// </returns>
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[UnconditionalSuppressMessage("ReflectionAnalysis", "IL2070:UnrecognizedReflectionPattern",
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Justification = "GetProperty is used for backward compatibility and gracefully handles failures")]
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public async Task<WebView2PrintSettingsModel> ShowPrintDialogAsync(
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WebView2PrintSettingsModel initialSettings = null,
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IEnumerable<string> availablePrinters = null)
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{
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try
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{
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// Note: XamlRoot will be set by the calling code when showing the dialog
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// Create the print dialog
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var dialog = initialSettings != null
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? new PrintDialog(initialSettings)
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: new PrintDialog();
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// The XamlRoot will be set by the calling code when showing the dialog
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// Get available printers if not provided
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var printers = availablePrinters ?? await GetAvailablePrintersAsync();
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dialog.SetAvailablePrinters(printers);
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// Show the dialog
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var result = await dialog.ShowAsync();
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// Return the settings if user clicked Print, otherwise null
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return result == Microsoft.UI.Xaml.Controls.ContentDialogResult.Primary
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? dialog.PrintSettings
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: null;
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}
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catch (Exception ex)
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{
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// Log the exception if logging is available
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System.Diagnostics.Debug.WriteLine($"Error showing print dialog: {ex.Message}");
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return null;
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}
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}
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/// <summary>
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/// Gets the list of available printers on the system.
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/// </summary>
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/// <returns>A task that resolves to a list of available printer names.</returns>
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public async Task<IEnumerable<string>> GetAvailablePrintersAsync()
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{
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return await Task.Run(() =>
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{
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try
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{
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var printers = new List<string>();
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// Get all installed printers using System.Drawing.Printing
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foreach (string printerName in PrinterSettings.InstalledPrinters)
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{
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printers.Add(printerName);
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}
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return printers.AsEnumerable();
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}
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catch (Exception ex)
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{
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// Log the exception if logging is available
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System.Diagnostics.Debug.WriteLine($"Error getting available printers: {ex.Message}");
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return Enumerable.Empty<string>();
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}
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});
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}
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} |