naps2/NAPS2.Lib/EtoForms/EtoDialogHelper.cs at 230eba688bffc2e9bcb80a96d521e68531d3b42f · cyanfish/naps2 · GitHub

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using Eto.Forms;
using NAPS2.ImportExport;

namespace NAPS2.EtoForms;

public class EtoDialogHelper : DialogHelper
{
    private readonly Naps2Config _config;
    private readonly FileFilters _fileFilters;
    private bool _addExt = EtoPlatform.Current.IsGtk;

    public EtoDialogHelper(Naps2Config config, FileFilters fileFilters)
    {
        _config = config;
        _fileFilters = fileFilters;
    }

    public override bool PromptToSavePdfOrImage(string? defaultPath, out string? savePath)
    {
        var lastExt = _config.Get(c => c.LastPdfOrImageExt)?.ToLowerInvariant();
        if (string.IsNullOrEmpty(lastExt))
        {
            lastExt = "pdf";
        }
        var sd = new SaveFileDialog
        {
            FileName = GetDefaultFileName(defaultPath, lastExt!)
        };
        _fileFilters.Set(sd, FileFilterGroup.Pdf | FileFilterGroup.Image, lastExt);
        SetDir(sd, defaultPath);
        EtoPlatform.Current.ConfigureFileDialog(sd);
        if (sd.ShowDialog(null) == DialogResult.Ok)
        {
            savePath = sd.FileName;
            _config.User.Set(c => c.LastPdfOrImageExt, (Path.GetExtension(sd.FileName) ?? "").Replace(".", ""));
            return true;
        }
        savePath = null;
        return false;
    }

    public override bool PromptToSavePdf(string? defaultPath, out string? savePath)
    {
        var sd = new SaveFileDialog
        {
            FileName = GetDefaultFileName(defaultPath, "pdf")
        };
        _fileFilters.Set(sd, FileFilterGroup.Pdf);
        SetDir(sd, defaultPath);
        EtoPlatform.Current.ConfigureFileDialog(sd);
        if (sd.ShowDialog(null) == DialogResult.Ok)
        {
            savePath = sd.FileName;
            return true;
        }
        savePath = null;
        return false;
    }

    public override bool PromptToSaveImage(string? defaultPath, out string? savePath)
    {
        var lastExt = _config.Get(c => c.LastImageExt)?.ToLowerInvariant();
        if (string.IsNullOrEmpty(lastExt))
        {
            lastExt = "jpg";
        }
        var sd = new SaveFileDialog
        {
            FileName = GetDefaultFileName(defaultPath, lastExt!)
        };
        var filterGroups = EtoPlatform.Current.IsGtk
            ? FileFilterGroup.AllImages | FileFilterGroup.Image
            : FileFilterGroup.Image;
        _fileFilters.Set(sd, filterGroups, lastExt);
        SetDir(sd, defaultPath);
        EtoPlatform.Current.ConfigureFileDialog(sd);
        if (sd.ShowDialog(null) == DialogResult.Ok)
        {
            savePath = sd.FileName;
            _config.User.Set(c => c.LastImageExt, (Path.GetExtension(sd.FileName) ?? "").Replace(".", ""));
            return true;
        }
        savePath = null;
        return false;
    }

    private string? GetDefaultFileName(string? defaultPath, string ext)
    {
        if (string.IsNullOrEmpty(defaultPath))
        {
            // Provide a default timestamped placeholder when no path is configured
            return _addExt ? $"NAPS2_Scanned_$(YYYY)-$(MM)-$(DD)$(hh)-$(mm)-$(ss).{ext}" : null;
        }
        var normPath = NormalizePath(defaultPath);
        return _addExt && !Path.HasExtension(normPath)
            ? $"{normPath}.{ext}"
            : normPath;
    }

    private void SetDir(SaveFileDialog dialog, string? defaultPath)
    {
        string? path = null;
        if (Paths.IsTestAppDataPath)
        {
            // For UI test automation we choose the appdata folder for test isolation and consistency
            path = Paths.AppData;
        }
        else if (Path.IsPathRooted(defaultPath))
        {
            path = Path.GetDirectoryName(NormalizePath(defaultPath));
        }
        if (path != null)
        {
            dialog.Directory = UriHelper.FilePathToFileUri(Path.GetFullPath(path));
        }
    }

    private static string NormalizePath(string path)
    {
        string normPath = Placeholders.NonNumeric.Substitute(path);
        // If the path points to a directory, it should end in a trailing slash.
        // Otherwise, path functions will assume that the directory name is a file name.
        if (Directory.Exists(normPath) && !normPath.EndsWith(Path.DirectorySeparatorChar))
        {
            normPath += Path.DirectorySeparatorChar;
        }
        return normPath;
    }

    public override bool PromptToImport(out string[]? filePaths)
    {
        var ofd = new OpenFileDialog
        {
            MultiSelect = true,
            CheckFileExists = true
        };
        _fileFilters.Set(ofd,
            FileFilterGroup.AllFiles | FileFilterGroup.Pdf | FileFilterGroup.AllImages | FileFilterGroup.Image);
        if (Paths.IsTestAppDataPath)
        {
            // For UI test automation we choose the appdata folder to find the prepared files to import
            ofd.Directory = UriHelper.FilePathToFileUri(Path.GetFullPath(Paths.AppData));
        }
        EtoPlatform.Current.ConfigureFileDialog(ofd);
        if (ofd.ShowDialog(null) == DialogResult.Ok)
        {
            filePaths = ofd.Filenames.ToArray();
            return true;
        }
        filePaths = null;
        return false;
    }
}