/// <summary>
/// private helper function to help open the file
/// </summary>
/// <param name="OpenFileDialog"></param>
private void open(OpenFileDialog OpenFileDialog)
{
// if the user hit ok
if (OpenFileDialog.ShowDialog() == DialogResult.OK)
{
// set the file path to the OpenFileDialog.FileName
filePath = OpenFileDialog.FileName;
// change the extension of the file
System.IO.Path.ChangeExtension(filePath, ".xml");
// clear teh spreadsheetpanel and hide
spreadsheetPanel1.Clear();
this.Hide();
// create a new form1 instance
Form1 newform = new Form1(filePath);
try
{
// run the form and setvalues to the cells
SSContextSingleton.getContext().RunForm(newform);
Display();
}
catch (SpreadsheetReadWriteException)
{
// show a messagebox if the file cannot be opened
MessageBox.Show("Unable to open the file.", "Message");
}
}
}
/// <summary>
/// makes new context exactly once
/// </summary>
/// <returns> a new contextsingleton if there isn't one already.</returns>
public static SSContextSingleton getContext()
{
if (MyContext == null)
{
MyContext = new SSContextSingleton();
}
return(MyContext);
}
static void Main()
{
SSContextSingleton appcontext = SSContextSingleton.getContext();
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
appcontext.RunForm(new SpreadSheetForm());
Application.Run(appcontext);
}
/// <summary>
/// If click the newToolStripMenuItem, do the following reaction
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void newToolStripMenuItem_Click(object sender, EventArgs e)
{
// if the sheet has not been changed, hide this form and create a new one
if (!(sheet.Changed))
{
this.Hide();
SSContextSingleton.getContext().RunForm(new Form1());
}
else
{
// warning the user if they want to save first before creating
DialogResult result = MessageBox.Show("Do you want to save this spreadsheet before creating a new spreadsheet?",
"Message", MessageBoxButtons.YesNoCancel);
// if yes, save the file
if (result == DialogResult.Yes)
{
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
try
{
filePath = saveFileDialog1.FileName;
backgroundWorker1.RunWorkerAsync();
MessageBox.Show("Saved.");
getFileName();
this.Text = docName;
}
catch (SpreadsheetReadWriteException)
{
MessageBox.Show("Unable to save.");
}
this.Hide();
SSContextSingleton.getContext().RunForm(new Form1());
}
}
// if no, hide the form and creat a new one
if (result == DialogResult.No)
{
this.Hide();
SSContextSingleton.getContext().RunForm(new Form1());
}
// if cancle, do nothing
if (result == DialogResult.Cancel)
{
return;
}
}
}
/// <summary>
/// What happens when user clicks New
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void newToolStripMenuItem_Click(object sender, EventArgs e)
{
SSContextSingleton.getContext().RunForm(new SpreadSheetForm());
}
