private void PlusBtn_Click(object sender, EventArgs e)
{
//Finding the required parent controls
Button btnSender = (Button)sender;
GroupBox gbSender = (GroupBox)btnSender.Parent;
BasketGBControl endParent = (BasketGBControl)gbSender.Parent;
Product prod = endParent.paramProd;
//Looping through the available products o find the right one
//Decreasing its quantity, increasing the quantity in the basket
//Or showing the error message if no more items can be added to the basket
foreach (Product productAv in ShopForm.AvailableProducts)
{
if (productAv.Equals(prod))
{
if (productAv.Quantity > 0)
{
prod.Quantity++;
endParent.TrueQtyLbl.Text = prod.Quantity.ToString();
productAv.Quantity--;
ShopGBControl.QtyChange(endParent, productAv);
ShopForm.ChangePriceWeightLbls(endParent, Basket.BasketList);
return;
}
else
{
MessageBox.Show($"Sorry, {prod.Name.ToLower()} is out of stock.");
return;
}
}
}
}
private void MinusBtn_Click(object sender, EventArgs e)
{
//Finding the required parent controls
Button btnSender = (Button)sender;
GroupBox gbSender = (GroupBox)btnSender.Parent;
BasketGBControl endParent = (BasketGBControl)gbSender.Parent;
FlowLayoutPanel flpParent = (FlowLayoutPanel)endParent.Parent;
Product prod = endParent.paramProd;
//Checking the quantity of item in the basket and performing necessary actions accordingly
//Decreasing quantity in basket, increasing quantity in available products, rerendering the labels
//And, if necessary, removing the item from the basket
if (prod.Quantity > 1)
{
prod.Quantity--;
endParent.TrueQtyLbl.Text = prod.Quantity.ToString();
foreach (Product productAv in ShopForm.AvailableProducts)
{
if (productAv.Equals(prod))
{
productAv.Quantity++;
ShopGBControl.QtyChange(endParent, productAv);
ShopForm.ChangePriceWeightLbls(endParent, Basket.BasketList);
return;
}
}
}
else if (prod.Quantity == 1)
{
foreach (Product productAv in ShopForm.AvailableProducts)
{
if (productAv.Equals(prod))
{
productAv.Quantity++;
ShopGBControl.QtyChange(endParent, productAv);
ShopForm.ChangePriceWeightLbls(endParent, Basket.BasketList);
Basket.BasketList.Remove(prod);
flpParent.Controls.Remove(endParent);
return;
}
}
}
}
public static void AddToBasket(Object obj, EventArgs e)
{
//Adds a product to the basket
Button addBtn = (Button)obj;
GroupBox groupBox = (GroupBox)addBtn.Parent;
ShopGBControl endParent = (ShopGBControl)groupBox.Parent;
int prodQty = endParent.paramProd.Quantity;
string boxName = groupBox.Text;
//Loops through available products and checks if the name of ShopGBControl (the sender)
//matches with the neame of the product, the quantity is more than 0 and the product
//is not yet in the Basket and then adds it to the temporary basket.
//Displays the appropriate error messages if a certain criterion is not met.
foreach (Product prod in ShopForm.AvailableProducts)
{
if (prod.Name == boxName && prod.Quantity > 0 && !Basket.BasketList.Contains(prod))
{
prodQty--;
endParent.TrueQtyLbl.Text = prodQty.ToString();
Basket.TempBasketList.Add(prod);
Basket.RenderBasket(groupBox);
ShopForm.ChangePriceWeightLbls(endParent, Basket.BasketList);
return;
}
else if (prod.Name == boxName && prod.Quantity == 0)
{
MessageBox.Show($"Sorry, the {prod.Name.ToLower()} is out of stock.");
return;
}
else if (prod.Name == boxName && Basket.BasketList.Contains(prod))
{
MessageBox.Show("The product is already in the basket!");
return;
}
}
MessageBox.Show("An error has occured.");
}
public static void RenderBasket(GroupBox gbSender)
{
//Finding the final parent (the main form (ShopForm))
ShopGBControl sgbcSender = (ShopGBControl)gbSender.Parent;
FlowLayoutPanel flpSender = (FlowLayoutPanel)sgbcSender.Parent;
Form baseForm = (Form)flpSender.Parent;
//Generating an IEnumerable of required type
var flpList = baseForm.Controls.OfType <FlowLayoutPanel>();
//Looping through the flpList, looking for the needed FlowLayoutPanel
//Checking whether the item is already in there and adding it if needed
//Or displaying an error message
foreach (var flp in flpList)
{
if (flp.Name == "BasketPanel")
{
for (int i = 0; i < TempBasketList.Count; i++)
{
Product prod = TempBasketList[i];
if (!BasketList.Contains(prod))
{
prod.Quantity--;
Product basketProd = new Product(prod);
BasketList.Add(basketProd);
flp.Controls.Add(new BasketGBControl(basketProd));
TempBasketList.Clear();
}
else
{
TempBasketList.Clear();
MessageBox.Show("Product is in the basket already");
}
}
}
}
}
