/// <summary>
/// The event is triggered when the insert button is clicked. It will instantiate a new DVDCopy and add
/// it to the list corresponding to the DVD object.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void btnInsert_Click(object sender, EventArgs e)
{
// Checks whether the barcode is not empty, and has a valid barcode.
if (this.txtBarcode.Text != String.Empty && this.validateBarcode(this.txtBarcode.Text))
{
// Fetches the current DVD object.
DVD dvd = DVD.Fetch(Convert.ToInt32(this.dvdID.Value));
if (dvd != null) // If the DVD object exists.
// It will instantiate a new DVDCopy object based on the insert record fields. It will
// then add the object into the copies list contained inside the DVD object.
//dvd.copies.Add(new DVDCopy(dvd, this.txtBarcode.Text, this.chkAvailability.Checked));
{
if (dvd.AddCopy(this.txtBarcode.Text, ((this.chkAvailability.Checked) ? DVDCopy.Status.AVAILABLE : DVDCopy.Status.UNAVAILABLE)))
{
// Shows a friendly message letting them know it has been added.
this.lblMessage.Text = "A new copy has been added.";
this.lblMessage.ForeColor = System.Drawing.Color.Green;
this.lblMessage.Visible = true;
// Reloads the DVDCopy DataGridView to reflect the changes.
RefreshCopies();
}
else
{
// Shows a message stating the barcode is invalid.
this.lblMessage.Text = "Barcode already exists.";
this.lblMessage.ForeColor = System.Drawing.Color.Red;
this.lblMessage.Visible = true;
}
}
}
// Sets the input barcode textbox to empty.
this.txtBarcode.Text = String.Empty;
// Sets the input availability checkbox back to true.
this.chkAvailability.Checked = true;
}
/// <summary>
/// The addCopy method is used to add a DVDCopy object that was selected in the DVDCopy dropdown box to
/// either the rentals or purchases dictionary (depending on the received boolean). It will then reload
/// the copies dropdown box to reflect the changes.
/// </summary>
/// <param name="isRental"></param>
private void addCopy(Boolean isRental)
{
// If a copy is selected.
if (this.copies.SelectedValue != String.Empty)
{
// It will fetch the DVD that the copy belongs to.
DVD dvd = DVD.Fetch(Convert.ToInt32(this.dvds.SelectedValue.ToString()));
// It will then fetch the copy from the DVD (by passing in the barcode).
DVDCopy copy = DVDCopy.FetchCopy(Convert.ToInt32(this.copies.SelectedItem.Value));
// If the copy doesn't already exist in both dictionaries
if (!(this.lstRentals.ContainsKey(this.copies.SelectedItem.Text) ||
this.lstPurchases.ContainsKey(this.copies.SelectedItem.Text)))
{
// Then it will add it to either the rentals or purchases
if (isRental)
{
this.lstRentals.Add(copy.barcode, copy);
}
else
{
this.lstPurchases.Add(copy.barcode, copy);
}
}
// Reloads the copies.
this.loadCopies();
}
// Reshows the creditcard payment option.
this.checkPaymentType();
// Loads the list boxes (with the new copy included).
this.loadListBoxes();
}
/// <summary>
/// The loadCopies method is used to show another dropdown box containing the DVDCopy objects that belong to the selected DVD.
/// It will check whether a DVD is selected, and if so; it will add available copies into the dropdown box.
/// </summary>
private void loadCopies()
{
// Clears the copies dropdown list.
this.copies.Items.Clear();
// If a DVD is selected
if (this.dvds.SelectedValue != String.Empty)
{
this.dvdCopies.Visible = true; // shows the dropdown box
// Fetches the DVD object relating to the selected item
DVD dvd = DVD.Fetch(Convert.ToInt32(this.dvds.SelectedValue.ToString()));
// Grabs the DVD copies belonging to that object
List <DVDCopy> list = dvd.copies;
foreach (DVDCopy copy in list) // Iterates for each copy
// If the copy is available & doesn't already exist on the form
{
if (copy.isAvailable && (!this.copyExists(copy)))
{
// Adds the copy to the dropdown box.
this.copies.Items.Add(new ListItem(copy.barcode, copy.copyID.ToString()));
}
}
// If the copies dropdown list has no items it will
// reload the DVDs, which will hide the copies.
if (this.copies.Items.Count == 0)
{
this.loadDVDS();
}
}
else
{
// Otherwise, if no DVD is selected it will hide the copies.
this.dvdCopies.Visible = false;
}
}
/// <summary>
/// The page load event will Fetch the object which corresponds to the unqiue key received,
/// and invoke the ShowRecord method on the form usercontrol passing the object as an argument.
/// It will then set the visibility of the form to true.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void Page_Load(object sender, EventArgs e)
{
DVDEzy.CheckSession();
try {
DVD dvd = DVD.Fetch(Convert.ToInt32(Request.QueryString["view"]));
if (dvd != null)
{
dvdForm.ShowRecord(dvd);
dvdForm.Visible = true;
}
} catch (Exception ex) {}
}
/// <summary>
/// The RefreshCards method initialises the datasource of the DataGridView to point to the copies list contained
/// in the viewed DVD object. It binds it to the object list.
/// </summary>
private void RefreshCopies()
{
// Fetches the DVD object
DVD dvd = DVD.Fetch(Convert.ToInt32(this.dvdID.Value));
if (dvd != null)
{
// Sets the source & binds it to the list.
this.gridCopies.DataSource = dvd.copies;
this.gridCopies.DataBind();
}
}
/// <summary>
/// The event is triggered when the save button is pressed. It will either fetch the DVD (in view mode) or create a new one (add mode).
/// It will set the properties of the object to the contents of the form.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void btnSave_Click(object sender, EventArgs e)
{
// Fetches or creates a new DVD object.
DVD dvd = ((this.dvdID.Value != String.Empty) ?
DVD.Fetch(Convert.ToInt32(this.dvdID.Value)) : new DVD());
// Sets the properties to the contents of the form.
dvd.title = this.title.Text;
dvd.director = this.director.Text;
dvd.yearReleased = Convert.ToInt32(this.yearReleased.Text.ToString());
dvd.salePrice = Convert.ToDouble(this.salePrice.Text.ToString());
dvd.rentalPrice = Convert.ToDouble(this.rentalPrice.Text.ToString());
dvd.Save(); // Saves the object. It will ensure it has been added to the list.
this.dvdID.Value = dvd.dvdID.ToString();
// Shows a friendly message stating it has been saved.
this.lblMessage.Text = "The record has been saved.";
this.lblMessage.ForeColor = System.Drawing.Color.Green;
this.lblMessage.Visible = true;
// Refreshes the DVDCopy DataGridView.
this.RefreshCopies();
this.chkAvailability.Checked = true;
}
