// parameterized constructor that takes in the a form the user wants
// to delete an item from
public RemoveItem_Form(Workshop_Form f)
{
// set the workshop to the form that was passed in
Workshop = f;
InitializeComponent();
}
// event handler to handle all events associated with clicking on a drop
// down item
private void ToolStripMenuItem_Click(object sender, MouseEventArgs e)
{
// make a generic dialog object that will use polymorphism
object dialog;
// prepare for errors
try
{
// make the drop down items of the file menu item invisible
foreach (ToolStripItem toolStripItem in fileToolStripMenuItem.DropDownItems)
{
toolStripItem.Visible = false;
}
// make the drop down items of the items menu item invisible
foreach (ToolStripItem toolStripItem in itemsToolStripMenuItem.DropDownItems)
{
toolStripItem.Visible = false;
}
// save the item the user selected as the text of the button
// they clicked
string item = ((ToolStripMenuItem)sender).Text;
// used to hold the full path of a file
string filePath;
// declare a result item for when the dialog object is used
DialogResult result;
// make a reference to a child form
Workshop_Form form;
// switch on the value of item
switch (item)
{
// if item == "Exit"...
case "Exit":
// close the app
this.Close();
// and send an exit message to the system
System.Environment.Exit(1);
break;
// if item == "Insert"...
case "Insert":
// make form refer to the active child form
form = (Workshop_Form)ActiveMdiChild;
// make a new reference to a dialog that will allow the
// user to enter information about an item
NewItem_Dialog itemForm = new NewItem_Dialog();
// show the dialog to the user
itemForm.ShowDialog();
// if they filled out info and clicked OK...
if (itemForm.record != null)
{
// add the record to the list of records in the active
// form
form.WorkshopItems.Add(new Record(itemForm.record));
// refresh the active form
form.UpdateListBox();
}
break;
// if item == "Remove"...
case "Remove":
// make form refer to the active child from
form = (Workshop_Form)ActiveMdiChild;
// make a new reference to a dialog that will ask the
// user which item they want to remove
RemoveItem_Form rform = new RemoveItem_Form(form);
// show the dialog to the user
rform.ShowDialog();
// refresh the active form
form.UpdateListBox();
break;
// if item == "New"...
case "New":
// make dialog a reference to a dialog that will prompt
// the user for a name of the new form
dialog = new WorkshopName_Dialog();
// show the dialog to the user
((WorkshopName_Dialog)dialog).ShowDialog();
//if the name they enetered for the new form is valid...
if (((WorkshopName_Dialog)dialog).FileName != "" && ((WorkshopName_Dialog)dialog).FileName != null)
{
// if there is a child form...
if (ActiveMdiChild != null)
{
// and that active child has the same name as what was entered...
if (((WorkshopName_Dialog)dialog).FileName ==
((Workshop_Form)ActiveMdiChild).WorkshopName)
{
// set the form to the active child
form = (Workshop_Form)ActiveMdiChild;
}
else // the names are different
{
// make a new form with the name the user entered
form = new Workshop_Form(((WorkshopName_Dialog)
dialog).FileName);
// and make it's MdiParent the current form
form.MdiParent = this;
}
}
else // there is not yet an active child
{
// so make a new form with the name the user entered
form = new Workshop_Form(((WorkshopName_Dialog)
dialog).FileName);
// and make it's Mdiparent the current form
form.MdiParent = this;
}
// make the save option visible
saveToolStripMenuItem.Visible = true;
// add a tag to the form
form.Tag = "Child_" + Workshop_Form.Count;
// change the name of the form that the user sees appropriately
form.Text = form.WorkshopName;
// show the form to the user
form.Show();
// make the insert dorp down menu visible
Director_MenuStrip.Items[1].Visible = true;
}
break;
case "Open":
// make dialog a popup for finding a file in a file explorer
dialog = new OpenFileDialog();
// set the initial directory of the dialog the folder
// where the executable exists
((OpenFileDialog)dialog).InitialDirectory =
Directory.GetCurrentDirectory();
// save the result of what the user does to close the dialog
result = ((OpenFileDialog)dialog).ShowDialog();
// get the file path from the dialog
filePath = ((OpenFileDialog)dialog).FileName;
// split the file path of the \ character
string[] FilePath = filePath.Split('\\');
// make a new child form that has a name of the file
// selected without the extension
form = new Workshop_Form(FilePath[FilePath.Count() - 1].
Split('.')[0]);
// set the MdiParent of the form to the current form
form.MdiParent = this;
// if the file path was an actual path...
if (filePath != "" && filePath != null)
{
//insertToolStripMenuItem.Visible = true;
// show the save button
saveToolStripMenuItem.Visible = true;
// prepare for errors
try
{
// open a file
infile = new FileStream(filePath, FileMode.Open,
FileAccess.Read);
// read from it until there is a SerializationException
while (true)
{
// extract a record from the file
Record rec = new Record((Record)formatter.
Deserialize(infile));
// and add it to the new forms lsit of records
form.WorkshopItems.Add(rec);
}
}
catch (SerializationException)
{
// if the infile was declared...
if (infile != null)
{
// close it
infile.Close();
}
// make the name of the form that the user sees
// is set appropriately
form.Text = form.WorkshopName;
Director_MenuStrip.Items[1].Visible = true;
form.Show();
}
catch (FileNotFoundException)
{
// tell the user that there was no such file
MessageBox.Show("File not found", "FileNotFoundError",
MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
catch (FormatException)
{
// tell the user that there was an issue with the
// format of the file being read from
MessageBox.Show("File not in proper format",
"FileFormatError", MessageBoxButtons.OK,
MessageBoxIcon.Exclamation);
}
}
break;
// if item == Save...
case "Save":
// if there is an active child...
if (ActiveMdiChild != null)
{
// set the form to the active child
form = (Workshop_Form)ActiveMdiChild;
// get the folder path of the executable
filePath = Directory.GetCurrentDirectory();
// if the form ahs an acceptable name...
if (form.WorkshopName != "" && form.WorkshopName != null)
{
// prepare for errors
try
{
// make an output file with the form name and the
// extension .src
outfile = new FileStream(
form.WorkshopName + ".src", FileMode.OpenOrCreate,
FileAccess.Write);
// for all the records in the record list...
foreach (Record rec in form.WorkshopItems)
{
// print the record to the file
formatter.Serialize(outfile, rec);
}
// then close the file
outfile.Close();
// display a message saying that saving was
// successful
MessageBox.Show("File successfully saved to " +
filePath + "\\" + form.WorkshopName + ".src",
"Saved to " + form.WorkshopName + ".src",
MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (FileNotFoundException)
{
// show an error about the file name being unvalid
MessageBox.Show("File not found", "FileNotFoundError",
MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
catch (SerializationException)
{
// show a message to the user about there being
// an error writing to the file
MessageBox.Show("Error writting to file",
"SerializationError", MessageBoxButtons.OK,
MessageBoxIcon.Exclamation);
// and close the file
outfile.Close();
}
}
}
break;
default:
// set the default value of result to
// the abort result from a dialog
result = DialogResult.Abort;
break;
}
}
catch (Exception ex)
{
// error message for unexpected error
MessageBox.Show(ex.ToString(), "Error", MessageBoxButtons.OK,
MessageBoxIcon.Error);
}
// make the items in the file drop down menu visible
foreach (ToolStripItem toolStripItem in fileToolStripMenuItem.
DropDownItems)
{
toolStripItem.Visible = true;
}
// make the items in the items drop down menu visible
foreach (ToolStripItem toolStripItem in itemsToolStripMenuItem.
DropDownItems)
{
toolStripItem.Visible = true;
}
}
