////////////////////////////////////////////////////////////////////
// Open zip file
////////////////////////////////////////////////////////////////////
private void OnOpen
(
object sender,
EventArgs e
)
{
// get zip file name from operator
OpenFileDialog OFD = new OpenFileDialog();
OFD.Filter = "Zip files (*.ZIP)|*.ZIP";
OFD.CheckFileExists = true;
OFD.CheckPathExists = true;
OFD.RestoreDirectory = true;
if (OFD.ShowDialog() != DialogResult.OK)
{
return;
}
// display empty datagrid
AddDataGrid();
// trace
Trace.Write("Open exising ZIP archive: " + OFD.FileName);
// create inflate object
if (Inflate == null)
{
Inflate = new InflateZipFile();
}
// inflate is already open
else if (InflateZipFile.IsOpen(Inflate))
{
// delete zip directory
ZipDir = null;
// close previous zip archive (if open)
Inflate.CloseZipFile();
// display empty directory in data grid view
LoadDataGrid();
}
// open zip file and load zip file directory
if (Inflate.OpenZipFile(OFD.FileName))
{
MessageBox.Show("Open ZIP file Error\n" + Inflate.ExceptionStack[0] + "\n" + Inflate.ExceptionStack[1]);
return;
}
// get zip directory
ZipDir = Inflate.ZipDir;
// display zip file directory in data grid view
LoadDataGrid();
return;
}
////////////////////////////////////////////////////////////////////
// Form is closing
////////////////////////////////////////////////////////////////////
private void OnClosing
(
object sender,
FormClosingEventArgs e
)
{
// Inflate is active. Close the zip archive file
if (InflateZipFile.IsOpen(Inflate))
{
Inflate.CloseZipFile();
}
// deflate is active
if (Deflate != null)
{
// new archive is not empty
if (!Deflate.IsEmpty)
{
switch (MessageBox.Show(this, "Do you want to save your ZIP archive?\n" +
"If you select NO, the archive will be deleted", "Save ZIP Archive",
MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question))
{
case DialogResult.Cancel:
e.Cancel = true;
return;
case DialogResult.Yes:
OnSave();
break;
case DialogResult.No:
// clearing the zip directory will make SaveArchive delete the file
Deflate.ClearArchive();
break;
}
}
// deflate is empty
else
{
// save archive will delete the archive because it is empty
Deflate.ClearArchive();
}
}
// trace exit
Trace.Write("UZipDotNet exit");
return;
}
////////////////////////////////////////////////////////////////////
// Switch from extract zip to update zip
////////////////////////////////////////////////////////////////////
private Boolean SwitchMode()
{
// inflate archive is not open
if (!InflateZipFile.IsOpen(Inflate))
{
return(false);
}
// ask operator
ArchiveUpdateForm Dialog = new ArchiveUpdateForm();
Dialog.Inflate = Inflate;
if (Dialog.ShowDialog(this) == DialogResult.Cancel)
{
return(true);
}
// create deflate object
if (Deflate == null)
{
Deflate = new DeflateZipFile();
}
// reopen exiting zip file for read and write
if (Deflate.OpenArchive(Inflate.ArchiveName))
{
MessageBox.Show("Reopen ZIP file Error\n" + Deflate.ExceptionStack[0] + "\n" + Deflate.ExceptionStack[1]);
// get link to the empty zip directory
ZipDir = null;
// display zip file directory in data grid view
LoadDataGrid();
return(true);
}
// get zip directory
ZipDir = Deflate.ZipDir;
// display zip file directory in data grid view
LoadDataGrid();
// successful switch
return(false);
}
////////////////////////////////////////////////////////////////////
// Display archive name
////////////////////////////////////////////////////////////////////
private void DisplayArchiveName()
{
// archive is open for reading
if (InflateZipFile.IsOpen(Inflate))
{
ArchiveNameLabel.BackColor = Color.FromArgb(192, 255, 255);
ArchiveNameLabel.Text = Inflate.ArchiveName;
}
// archive is open for writing
else if (DeflateZipFile.IsOpen(Deflate))
{
ArchiveNameLabel.BackColor = Color.FromArgb(255, 192, 255);
ArchiveNameLabel.Text = Deflate.ArchiveName;
}
// archive is not open
else
{
ArchiveNameLabel.BackColor = SystemColors.Control;
ArchiveNameLabel.Text = "UZipDotNet";
}
// calculate required width
Int32 Width = (Int32)Math.Ceiling(CreateGraphics().MeasureString(ArchiveNameLabel.Text, ArchiveNameLabel.Font).Width) + 50;
// archive name position
ArchiveNameLabel.Width = Math.Min(Math.Max(Width, 200), ClientSize.Width - 50);
ArchiveNameLabel.Left = (ClientSize.Width - ArchiveNameLabel.Width) / 2;
ArchiveNameLabel.Top = 8;
// enable/disable some buttons
OpenButton.Enabled = !DeflateZipFile.IsOpen(Deflate);
ExtractButton.Enabled = InflateZipFile.IsOpen(Inflate);
AddButton.Enabled = InflateZipFile.IsOpen(Inflate) || DeflateZipFile.IsOpen(Deflate);
DeleteButton.Enabled = AddButton.Enabled;
// change button name
NewButton.Text = DeflateZipFile.IsOpen(Deflate) ? "Save" : "New";
// update control
Refresh();
return;
}
////////////////////////////////////////////////////////////////////
// New/Save archive file
////////////////////////////////////////////////////////////////////
private void OnNew
(
object sender,
EventArgs e
)
{
// test for save mode
if (DeflateZipFile.IsOpen(Deflate))
{
OnSave();
return;
}
// get zip file name from operator
SaveFileDialog SFD = new SaveFileDialog();
SFD.Filter = "Zip files (*.zip)|*.zip";
SFD.CheckFileExists = false;
SFD.CheckPathExists = true;
SFD.RestoreDirectory = true;
SFD.OverwritePrompt = true;
SFD.DefaultExt = "zip";
SFD.AddExtension = true;
if (SFD.ShowDialog() != DialogResult.OK)
{
return;
}
// display empty datagrid
AddDataGrid();
// trace
Trace.Write("Create ZIP archive: " + SFD.FileName);
// Inflate file is open
if (InflateZipFile.IsOpen(Inflate))
{
// release zip directory object
ZipDir = null;
// close inflate zip file if open
Inflate.CloseZipFile();
// display zip file directory in data grid view
LoadDataGrid();
}
// create deflate object
if (Deflate == null)
{
Deflate = new DeflateZipFile();
}
// create empty zip file
if (Deflate.CreateArchive(SFD.FileName))
{
MessageBox.Show("Create ZIP file Error\n" + Deflate.ExceptionStack[0] + "\n" + Deflate.ExceptionStack[1]);
return;
}
// get link to the empty zip directory
ZipDir = Deflate.ZipDir;
// display zip file directory in data grid view
LoadDataGrid();
return;
}