// Observe LOAD functions
public static FileOperationResult ObservedLoad(FileOperationDelegate loadFile, string fileName, string message, FileErrorPolicy policy)
{
try {
loadFile();
OnFileLoaded(new FileNameEventArgs(fileName));
return(FileOperationResult.OK);
} catch (Exception e) {
switch (policy)
{
case FileErrorPolicy.Inform:
ServiceManager.MessageService.InformSaveError(fileName, message, "${res:FileUtilityService.ErrorWhileLoading}", e);
break;
case FileErrorPolicy.ProvideAlternative:
ChooseSaveErrorResult r = ServiceManager.MessageService.ChooseSaveError(fileName, message, "${res:FileUtilityService.ErrorWhileLoading}", e, false);
if (r.IsRetry)
{
return(ObservedLoad(loadFile, fileName, message, policy));
}
else if (r.IsIgnore)
{
return(FileOperationResult.Failed);
}
break;
}
}
return(FileOperationResult.Failed);
}
// Observe SAVE functions
public static FileOperationResult ObservedSave(FileOperationDelegate saveFile, string fileName, string message, FileErrorPolicy policy)
{
System.Diagnostics.Debug.Assert(IsValidPath(fileName));
try {
saveFile();
OnFileSaved(new FileNameEventArgs(fileName));
return(FileOperationResult.OK);
} catch (Exception e) {
switch (policy)
{
case FileErrorPolicy.Inform:
ServiceManager.MessageService.InformSaveError(fileName, message, "${res:FileUtilityService.ErrorWhileSaving}", e);
break;
case FileErrorPolicy.ProvideAlternative:
ChooseSaveErrorResult r = ServiceManager.MessageService.ChooseSaveError(fileName, message, "${res:FileUtilityService.ErrorWhileSaving}", e, false);
if (r.IsRetry)
{
return(ObservedSave(saveFile, fileName, message, policy));
}
else if (r.IsIgnore)
{
return(FileOperationResult.Failed);
}
break;
}
}
return(FileOperationResult.Failed);
}
private static FileOperationResult ObservedSaveHandleError(Exception e, NamedFileOperationDelegate saveFileAs, string fileName, string message, FileErrorPolicy policy)
{
switch (policy)
{
case FileErrorPolicy.Inform:
ServiceManager.Instance.MessageService.InformSaveError(fileName, message, "${res:FileUtilityService.ErrorWhileSaving}", e);
break;
case FileErrorPolicy.ProvideAlternative:
ChooseSaveErrorResult r = ServiceManager.Instance.MessageService.ChooseSaveError(fileName, message, "${res:FileUtilityService.ErrorWhileSaving}", e, true);
if (r.IsRetry)
{
return(ObservedSave(saveFileAs, fileName, message, policy));
}
else if (r.IsIgnore)
{
return(FileOperationResult.Failed);
}
else if (r.IsSaveAlternative)
{
return(ObservedSave(saveFileAs, r.AlternativeFileName, message, policy));
}
break;
}
return(FileOperationResult.Failed);
}
public ChooseSaveErrorResult ChooseSaveError(string fileName, string message, string dialogName, Exception exceptionGot, bool chooseLocationEnabled)
{
ChooseSaveErrorResult r = ChooseSaveErrorResult.Ignore;
Invoke(
delegate {
restartlabel:
using (SaveErrorChooseDialog dlg = new SaveErrorChooseDialog(fileName, message, dialogName, exceptionGot, chooseLocationEnabled)) {
switch (dlg.ShowDialog(DialogOwner)) {
case DialogResult.OK:
// choose location:
using (SaveFileDialog fdiag = new SaveFileDialog()) {
fdiag.OverwritePrompt = true;
fdiag.AddExtension = true;
fdiag.CheckFileExists = false;
fdiag.CheckPathExists = true;
fdiag.Title = "Choose alternate file name";
fdiag.FileName = fileName;
if (fdiag.ShowDialog() == DialogResult.OK) {
r = ChooseSaveErrorResult.SaveAlternative(fdiag.FileName);
break;
} else {
goto restartlabel;
}
}
case DialogResult.Retry:
r = ChooseSaveErrorResult.Retry;
break;
default:
r = ChooseSaveErrorResult.Ignore;
break;
}
}
});
return r;
}
public static FileOperationResult ObservedSave(NamedFileOperationDelegate saveFileAs, string fileName, string message, FileErrorPolicy policy)
{
System.Diagnostics.Debug.Assert(IsValidPath(fileName));
try
{
string directory = Path.GetDirectoryName(fileName);
if (!Directory.Exists(directory))
{
Directory.CreateDirectory(directory);
}
saveFileAs(fileName);
RaiseFileSaved(new FileNameEventArgs(fileName));
return(FileOperationResult.OK);
}
catch (Exception e)
{
switch (policy)
{
case FileErrorPolicy.Inform:
ServiceManager.MessageService.InformSaveError(fileName, message, "${res:FileUtilityService.ErrorWhileSaving}", e);
break;
case FileErrorPolicy.ProvideAlternative:
ChooseSaveErrorResult r = ServiceManager.MessageService.ChooseSaveError(fileName, message, "${res:FileUtilityService.ErrorWhileSaving}", e, true);
if (r.IsRetry)
{
return(ObservedSave(saveFileAs, fileName, message, policy));
}
else if (r.IsIgnore)
{
return(FileOperationResult.Failed);
}
else if (r.IsSaveAlternative)
{
return(ObservedSave(saveFileAs, r.AlternativeFileName, message, policy));
}
break;
}
}
return(FileOperationResult.Failed);
}
