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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
// Description:
// Interacts with user on file based information for XpsViewer.
using System;
using System.IO;
using System.Windows.Forms;
using System.Windows.TrustUI;
namespace MS.Internal.Documents.Application
{
/// <summary>
/// Interacts with user on file based information for XpsViewer.
/// </summary>
/// <remarks>
/// Responsibility:
/// Should be the only class that interacts with the user with or for file
/// location information.
/// </remarks>
internal static class FilePresentation
{
#region Internal Methods
//--------------------------------------------------------------------------
// Internal Methods
//--------------------------------------------------------------------------
/// <summary>
/// Prompts the user for the save location for the current XpsDocument.
/// </summary>
/// <param name="fileToken">The token for the current document</param>
/// <returns></returns>
internal static bool ShowSaveFileDialog(ref CriticalFileToken fileToken)
{
string extension = SR.FileManagementSaveExt;
Trace.SafeWrite(Trace.File, "Showing SafeFileDialog.");
bool result = false;
SaveFileDialog save = new SaveFileDialog();
if (fileToken != null)
{
save.FileName = fileToken.Location.LocalPath;
}
save.Filter = SR.FileManagementSaveFilter;
save.DefaultExt = extension;
DialogResult dialogResult;
// We need to invoke the ShowDialog method specifying a parent window.
// We need to specify a parent window in order to avoid a Winforms
// Common Dialog issue where the wrong window is used as the parent
// which causes the Save dialog to be incorrectly localized.
// Get the root browser window, if it exists.
IWin32Window rbw = null;
if (DocumentApplicationDocumentViewer.Instance != null)
{
rbw = DocumentApplicationDocumentViewer.Instance.RootBrowserWindow;
}
if (rbw != null)
{
dialogResult = save.ShowDialog(rbw);
}
else
{
dialogResult = save.ShowDialog();
}
if (dialogResult == DialogResult.OK)
{
string filePath = save.FileName;
// Add .xps extension if not already present.
// This must be done manually since the file save dialog will automatically
// add the extension only if the filename doesn't have a known extension.
// For instance, homework.1 would become homework.1.xps, but if the user
// gets up to homework.386, then the dialog would just pass it through as
// is, requiring us to append the extension here.
if (!extension.Equals(
Path.GetExtension(filePath),
StringComparison.OrdinalIgnoreCase))
{
filePath = filePath + extension;
}
Uri file = new Uri(filePath);
// as this is the only place we can verify the user authorized this
// particular file we construct the token here
fileToken = new CriticalFileToken(file);
result = true;
Trace.SafeWrite(Trace.File, "A save location was selected.");
}
return result;
}
/// <summary>
/// Notifies the user that the selected destination file is read-only, so
/// we cannot save to that location.
/// </summary>
internal static void ShowDestinationIsReadOnly()
{
System.Windows.MessageBox.Show(
SR.FileManagementDestinationIsReadOnly,
SR.FileManagementTitleError,
System.Windows.MessageBoxButton.OK,
System.Windows.MessageBoxImage.Exclamation
);
}
/// <summary>
/// Notifies the user of the failure to create temporary files, which
/// prevents editing.
/// </summary>
internal static void ShowNoTemporaryFileAccess()
{
System.Windows.MessageBox.Show(
SR.FileManagementNoTemporaryFileAccess,
SR.FileManagementTitleError,
System.Windows.MessageBoxButton.OK,
System.Windows.MessageBoxImage.Exclamation
);
}
/// <summary>
/// Notifies the user of the failure to open from a location.
/// </summary>
internal static void ShowNoAccessToSource()
{
System.Windows.MessageBox.Show(
SR.FileManagementNoAccessToSource,
SR.FileManagementTitleError,
System.Windows.MessageBoxButton.OK,
System.Windows.MessageBoxImage.Exclamation
);
}
/// <summary>
/// Notifies the user of the failure to save to a location.
/// </summary>
internal static void ShowNoAccessToDestination()
{
System.Windows.MessageBox.Show(
SR.FileManagementNoAccessToDestination,
SR.FileManagementTitleError,
System.Windows.MessageBoxButton.OK,
System.Windows.MessageBoxImage.Exclamation
);
}
#endregion Internal Methods
}
}
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