/// <summary>
/// New file which wraps another file.
/// </summary>
/// <param name="file">The base file.</param>
public WrapFile(FarFile file)
{
if (file == null)
{
throw new ArgumentNullException("file");
}
_File = file;
}
/// <summary>
/// Saves the panel state.
/// </summary>
/// <remarks>
/// It is called when the panel is about to be offline (pushed or replaced by a child panel).
/// The panel UI state is saved by the core (view and sort modes, etc.).
/// The base method posts the current file to be restored as current.
/// It is important to have the proper <see cref="FarNet.Explorer.FileComparer"/>.
/// </remarks>
protected virtual void SaveState()
{
FarFile file = CurrentFile;
if (file != null)
{
PostFile(file);
}
}
/// <summary>
/// Opens the file in the viewer.
/// </summary>
/// <param name="file">The file to view.</param>
/// <remarks>
/// The default method calls <see cref="FarNet.Explorer.GetContent"/> to get a temporary file to view.
/// The explorer should have it implemented.
/// </remarks>
public virtual void UIViewFile(FarFile file)
{
if (file == null)
{
return;
}
// target
var temp = Far.Api.TempName();
// export
var xExportArgs = WorksExportExplorerFile(Explorer, this, ExplorerModes.View, file, temp);
if (xExportArgs == null)
{
return;
}
// case: actual file exists
var asExportFileEventArgs = xExportArgs as GetContentEventArgs;
if (asExportFileEventArgs != null && !string.IsNullOrEmpty(asExportFileEventArgs.UseFileName))
{
var viewerActual = Far.Api.CreateViewer();
viewerActual.FileName = asExportFileEventArgs.UseFileName;
viewerActual.Title = file.Name;
viewerActual.Open();
return;
}
// viewer
var viewerTemp = Far.Api.CreateViewer();
viewerTemp.DeleteSource = DeleteSource.File;
viewerTemp.DisableHistory = true;
viewerTemp.FileName = temp;
viewerTemp.Title = file.Name;
viewerTemp.Switching = Switching.Enabled;
if (asExportFileEventArgs.CodePage != 0)
{
viewerTemp.CodePage = asExportFileEventArgs.CodePage;
}
// open
viewerTemp.Open();
}
/// <summary>
/// Creates file data snapshot from a <see cref="FarFile"/> object.
/// </summary>
/// <param name="file">Any panel file which data are taken.</param>
public SetFile(FarFile file)
{
if (file == null)
{
throw new ArgumentNullException("file");
}
Attributes = file.Attributes;
CreationTime = file.CreationTime;
Data = file.Data;
Description = file.Description;
LastAccessTime = file.LastAccessTime;
LastWriteTime = file.LastWriteTime;
Length = file.Length;
Name = file.Name;
Owner = file.Owner;
}
/// <summary>
/// Opens the file.
/// </summary>
/// <remarks>
/// It is called for the current file when [Enter] is pressed.
/// The base method just calls <see cref="FarNet.Explorer.OpenFile"/> if the explorer supports it.
/// </remarks>
/// <param name="file">The file to be opened.</param>
public virtual void UIOpenFile(FarFile file)
{
if (file == null)
{
return;
}
if (!Explorer.CanOpenFile)
{
return;
}
var args = new OpenFileEventArgs(file);
var explorer = UIOpenFile(args);
if (explorer != null)
{
explorer.OpenPanelChild(this);
}
}
///
public static GetContentEventArgs WorksExportExplorerFile(Explorer explorer, Panel panel, ExplorerModes mode, FarFile file, string fileName)
{
if (explorer == null)
{
throw new ArgumentNullException("explorer");
}
if (panel == null)
{
throw new ArgumentNullException("panel");
}
if (!explorer.CanGetContent)
{
return(null);
}
// export file
Log.Source.TraceInformation("ExportFile");
var args = new GetContentEventArgs(mode, file, fileName);
panel.UIGetContent(args);
if (args.Result != JobResult.Done)
{
return(null);
}
// no text or an actual file exists?
if (args.UseText == null || !string.IsNullOrEmpty(args.UseFileName))
{
return(args);
}
// export text
string text = args.UseText as string;
if (text == null)
{
IEnumerable collection = args.UseText as IEnumerable;
if (collection == null)
{
text = args.UseText.ToString();
}
else
{
// write collection
using (StreamWriter writer = new StreamWriter(fileName, false, Encoding.Unicode))
foreach (var it in collection)
{
writer.WriteLine(it);
}
return(args);
}
}
// write text
File.WriteAllText(fileName, text, Encoding.Unicode);
args.CodePage = 1200;
return(args);
}
/// <summary>
/// Opens the file in the editor.
/// </summary>
/// <param name="file">The file to edit.</param>
/// <remarks>
/// The default method calls <see cref="FarNet.Explorer.GetContent"/> to get a temporary file to edit
/// and <see cref="FarNet.Explorer.SetFile"/> to save changes when the editor closes.
/// The explorer should have at least export implemented.
/// </remarks>
public virtual void UIEditFile(FarFile file)
{
if (file == null)
{
return;
}
// target
var temp = Far.Api.TempName();
// export
var xExportArgs = WorksExportExplorerFile(Explorer, this, ExplorerModes.Edit, file, temp);
if (xExportArgs == null)
{
return;
}
// case: actual file exists
var asExportFileEventArgs = xExportArgs as GetContentEventArgs;
if (asExportFileEventArgs != null && !string.IsNullOrEmpty(asExportFileEventArgs.UseFileName))
{
var editorActual = Far.Api.CreateEditor();
editorActual.FileName = asExportFileEventArgs.UseFileName;
editorActual.Title = file.Name;
if (!asExportFileEventArgs.CanSet)
{
editorActual.IsLocked = true;
}
editorActual.Open();
return;
}
// rename
if (!string.IsNullOrEmpty(xExportArgs.UseFileExtension))
{
string temp2 = temp + xExportArgs.UseFileExtension;
File.Move(temp, temp2);
temp = temp2;
}
// editor
var editorTemp = Far.Api.CreateEditor();
editorTemp.DeleteSource = DeleteSource.File;
editorTemp.DisableHistory = true;
editorTemp.FileName = temp;
editorTemp.Title = file.Name;
if (asExportFileEventArgs.CodePage != 0)
{
editorTemp.CodePage = asExportFileEventArgs.CodePage;
}
// future
if (xExportArgs.CanSet)
{
if (Explorer.CanSetText)
{
editorTemp.Saving += delegate
{
var xImportTextArgs = new SetTextEventArgs(ExplorerModes.Edit, file, editorTemp.GetText());
Log.Source.TraceInformation("ImportText");
UISetText(xImportTextArgs);
};
}
else
{
editorTemp.Closed += delegate //???? to use Saved (Far 3), update docs.
{
if (editorTemp.TimeOfSave == DateTime.MinValue)
{
return;
}
var xImportFileArgs = new SetFileEventArgs(ExplorerModes.Edit, file, temp);
Log.Source.TraceInformation("ImportFile");
UISetFile(xImportFileArgs);
};
}
}
else
{
// to lock
editorTemp.IsLocked = true;
}
// go
editorTemp.Open();
}
/// <summary>
/// Posts the file to be found and set current on redrawing.
/// </summary>
/// <param name="file">The file to be found on redrawing.</param>
/// <remarks>
/// The posted file is ignored if <see cref="PostData"/> or <see cref="PostName"/> were called.
/// The <see cref="FarNet.Explorer.FileComparer"/> is used in order to find the file.
/// </remarks>
public void PostFile(FarFile file)
{
_Panel.PostFile(file);
}
/// <param name="mode">See <see cref="ExplorerEventArgs.Mode"/></param>
/// <param name="file">See <see cref="ExplorerFileEventArgs.File"/></param>
/// <param name="text">See <see cref="Text"/></param>
public SetTextEventArgs(ExplorerModes mode, FarFile file, string text) : base(mode, file)
{
Text = text;
}
/// <param name="mode">See <see cref="ExplorerEventArgs.Mode"/></param>
/// <param name="file">See <see cref="ExplorerFileEventArgs.File"/></param>
/// <param name="fileName">See <see cref="FileName"/></param>
public SetFileEventArgs(ExplorerModes mode, FarFile file, string fileName) : base(mode, file)
{
FileName = fileName;
}
/// <param name="mode">See <see cref="ExplorerEventArgs.Mode"/></param>
/// <param name="file">See <see cref="ExplorerFileEventArgs.File"/></param>
public RenameFileEventArgs(ExplorerModes mode, FarFile file) : base(mode, file)
{
}
/// <param name="file">See <see cref="ExplorerFileEventArgs.File"/></param>
public OpenFileEventArgs(FarFile file) : base(ExplorerModes.None, file)
{
}
/// <param name="mode">See <see cref="ExplorerEventArgs.Mode"/></param>
/// <param name="file">See <see cref="File"/></param>
protected ExplorerFileEventArgs(ExplorerModes mode, FarFile file) : base(mode)
{
File = file;
}
/// <param name="mode">See <see cref="ExplorerEventArgs.Mode"/></param>
/// <param name="file">See <see cref="File"/></param>
public ExploreDirectoryEventArgs(ExplorerModes mode, FarFile file) : base(mode)
{
File = file;
}
/// <summary>
/// Opens the file in the editor.
/// </summary>
/// <param name="file">The file to edit.</param>
/// <remarks>
/// The default method calls <see cref="FarNet.Explorer.GetContent"/> to get a temporary file to edit
/// and <see cref="FarNet.Explorer.SetFile"/> to save changes when the editor closes.
/// The explorer should have at least export implemented.
/// </remarks>
public virtual void UIEditFile(FarFile file)
{
if (file == null)
{
return;
}
// target file path
// _201223_vc Avoid Far.Api.TempName(). I think it reuses names if files do not exist. But file history may exist unexpectedly.
var temp = Kit.TempFileName(null);
// export
var xExportArgs = WorksExportExplorerFile(Explorer, this, ExplorerModes.Edit, file, temp);
if (xExportArgs == null)
{
return;
}
// case: actual file exists
if (!string.IsNullOrEmpty(xExportArgs.UseFileName))
{
var editorActual = Far.Api.CreateEditor();
editorActual.FileName = xExportArgs.UseFileName;
editorActual.Title = file.Name;
if (!xExportArgs.CanSet)
{
editorActual.IsLocked = true;
}
if (xExportArgs.EditorOpened != null)
{
editorActual.Opened += xExportArgs.EditorOpened;
}
editorActual.Open();
return;
}
// rename
if (!string.IsNullOrEmpty(xExportArgs.UseFileExtension))
{
var temp2 = Path.ChangeExtension(temp, xExportArgs.UseFileExtension);
File.Move(temp, temp2);
temp = temp2;
}
// editor
var editorTemp = Far.Api.CreateEditor();
editorTemp.DisableHistory = true;
editorTemp.FileName = temp;
editorTemp.Title = file.Name;
if (xExportArgs.CodePage != 0)
{
editorTemp.CodePage = xExportArgs.CodePage;
}
if (xExportArgs.EditorOpened != null)
{
editorTemp.Opened += xExportArgs.EditorOpened;
}
// future
//! Not sure why but with used DisableHistory the file reopens with the last caret restored.
//! If this is some Far feature and it changes then save and set the last caret manually.
var timeError = DateTime.MinValue;
if (xExportArgs.CanSet)
{
if (Explorer.CanSetText)
{
editorTemp.Saving += delegate
{
var xImportTextArgs = new SetTextEventArgs(ExplorerModes.Edit, file, editorTemp.GetText());
Log.Source.TraceInformation("ImportText");
try
{
timeError = DateTime.MinValue;
UISetText(xImportTextArgs);
}
catch (Exception exn)
{
//! show first, then save error time
Far.Api.ShowError("Cannot set text", exn);
timeError = DateTime.UtcNow;
}
};
editorTemp.Closed += delegate
{
//! if error was on saving without closing then on closing "much later" without new saving ignore error
if (timeError != DateTime.MinValue && (DateTime.UtcNow - timeError).TotalSeconds > 1)
{
timeError = DateTime.MinValue;
}
};
}
else
{
editorTemp.Closed += delegate
{
if (editorTemp.TimeOfSave == DateTime.MinValue)
{
return;
}
var xImportFileArgs = new SetFileEventArgs(ExplorerModes.Edit, file, temp);
Log.Source.TraceInformation("ImportFile");
try
{
UISetFile(xImportFileArgs);
}
catch (Exception exn)
{
Far.Api.ShowError("Cannot set file", exn);
timeError = DateTime.UtcNow;
}
};
}
}
else
{
// lock, do nothing else
editorTemp.IsLocked = true;
}
// loop while errors on saving
async void Loop()
{
try
{
for (; ;)
{
timeError = DateTime.MinValue;
await Tasks.Editor(editorTemp);
if (timeError == DateTime.MinValue)
{
break;
}
}
}
finally
{
File.Delete(temp);
}
}
Loop();
}
/// <summary>
/// New file which wraps another file.
/// </summary>
/// <param name="file">The base file.</param>
public WrapFile(FarFile file)
{
_File = file ?? throw new ArgumentNullException("file");
}
