internal static IDelegateCommand CreateCopyToClipBoardCommand(IHexDataContext hexDataContext)
{
var copyToClipBoardCommand = CommandFactory.CreateDelegateCommand(
() => {
if (hexDataContext.SelectionStart == -1 || hexDataContext.SelectionLength == -1)
{
return;
}
//若需剪切数据大于4GB,提示警告;
if (hexDataContext.SelectionLength - hexDataContext.SelectionStart > MaxCopyToClipBoardSize)
{
MsgBoxService.Current?.Show(LanguageService.Current?.FindResourceString(Constants.MsgText_TooLargeCopySize));
return;
}
hexDataContext.Stream.Position = hexDataContext.SelectionStart;
InterceptStream sourceStream = null;
StreamReader sr = null;
try {
sourceStream = InterceptStream.CreateFromStream(
hexDataContext.Stream,
hexDataContext.SelectionStart,
hexDataContext.SelectionLength);
sr = new StreamReader(sourceStream);
ClipBoardService.SetDataObject(sr.ReadToEnd());
}
catch (Exception ex) {
LoggerService.WriteCallerLine(ex.Message);
MsgBoxService.Current?.Show($"{ex.Message}");
}
finally {
sourceStream?.Dispose();
sr?.Dispose();
}
});
return(copyToClipBoardCommand);
}
internal static IDelegateCommand CreateCopyToNewFileCommand(IHexDataContext hexDataContext)
{
var copyToNewFileCommand = CommandFactory.CreateDelegateCommand(
() => {
if (hexDataContext.SelectionLength == -1 || hexDataContext.SelectionStart == -1)
{
return;
}
var dialogService = ServiceProvider.Current.GetInstance <IDialogService>();
if (dialogService == null)
{
LoggerService.WriteCallerLine($"{nameof(dialogService)} can't be null.");
return;
}
var path = dialogService.GetSaveFilePath();
if (path == null)
{
return;
}
var dialog = dialogService.CreateLoadingDialog();
dialog.WindowTitle = LanguageService.FindResourceString(Constants.WindowTitle_DataCopying);
dialog.DoWork += (sender, e) => {
FileStream fs = null;
InterceptStream sourceStream = null;
try {
fs = File.Create(path);
byte[] buffer = new byte[10485760];
int read;
long readSize = 0;
hexDataContext.Stream.Position = hexDataContext.SelectionStart;
sourceStream = InterceptStream.CreateFromStream(
hexDataContext.Stream,
hexDataContext.SelectionStart,
hexDataContext.SelectionLength);
while ((read = sourceStream.Read(buffer, 0, buffer.Length)) != 0 && !dialog.CancellationPending)
{
fs.Write(buffer, 0, read);
readSize += read;
dialog.ReportProgress((int)(readSize * 100 / sourceStream.Length));
}
}
catch (Exception ex) {
LoggerService.WriteCallerLine(ex.Message);
}
finally {
fs?.Dispose();
sourceStream?.Dispose();
}
};
dialog.RunWorkerCompleted += (sender, e) => {
if (e.Cancelled)
{
return;
}
LocalExplorerService.OpenFolderAndSelectFile(path);
MsgBoxService.Current?.Show(LanguageService.Current?.FindResourceString(Constants.WindowTitle_DataCopyDone));
};
dialog.ShowDialog();
}, () => SelectionAvailable(hexDataContext));
hexDataContext.SelectionStateChanged += delegate {
copyToNewFileCommand.RaiseCanExecuteChanged();
};
return(copyToNewFileCommand);
}