// From CarList.Core.cs.
private void InsertEntry
(
CarListEntry entry,
CarListEntry previous,
CarListEntry current
)
{
//Case: empty list
if (previous == null && current == null)
{
this.head = entry;
this.tail = entry;
}
//Case: insert at head
else if (previous == null)
{
entry.Next = this.head;
this.head = entry;
}
//Case: insert at tail
else if (current == null)
{
this.tail.Next = entry;
this.tail = entry;
}
//Case: insert in middle
else
{
entry.Next = current;
previous.Next = entry;
}
length++;
}
// From CarList.Sort.cs
public void InsertSort(Func <NhtsaCar, NhtsaCar, int> CarComparer)
{
//Checks for trivial case where number of elements <= 1
if (this.length < 2)
{
return;
}
//Traverse through the list from first element till last element
CarListEntry firstUnsorted = this.head.Next;
CarListEntry previous1 = this.head;
while (firstUnsorted != null)
{
//Traverse through the list and compare the first unsorted element
//to every element from head till the one before first unsorted.
//Case 1: When an element greater than first unsorted is found,
//first unsorted is inserted before the element
//Case 2: If no element is greater than first unsorted, nothing is
//done.
CarListEntry position = this.head;
CarListEntry previous2 = null;
while (position != firstUnsorted)
{
//If any element before the firstUnsorted is found to be greater
//than firstUnsorted, firstUnsorted is inserted before the
//the greater element
if (CarComparer(firstUnsorted.Car, position.Car) < 0)
{
//firstUnsorted is deleted from list by changing Next
//pointer of previous to the element following
//firstUnsorted
previous1.Next = firstUnsorted.Next;
//length is reduced by 1 due to deletion
this.length--;
//firstUnsorted is inserted before the first element found
//to be greater
InsertEntry(firstUnsorted, previous2, position);
//The new firstUnsorted is the element after previous1
//(which was the element following firstUnsorted before
//firstUnsorted was moved)
firstUnsorted = previous1.Next;
break;
}
previous2 = position;
position = position.Next;
}
//Position == firstUnsorted when there are no elements greater in
//the sorted list, thus, previous1 is moved to firstUnsorted and
//firstUnsorted becomes the element after current firstUnsorted
if (position == firstUnsorted)
{
previous1 = firstUnsorted;
firstUnsorted = firstUnsorted.Next;
}
}
}
// From CarList.Sort.cs
public void SelectSort(Func <NhtsaCar, NhtsaCar, int> CarComparer)
{
//Checks for trivial case where number of elements <= 1
if (this.length < 2)
{
return;
}
//Loops through all unsorted element and attach minimum element to
//the end of list containing the sorted portion of list
for (int i = this.length; i > 0; i--)
{
//Assumes the minimum element of unsorted portion to be first
//element
CarListEntry min = this.head;
//previous1 holds pointer to entry before minimum
CarListEntry previous1 = null;
//Loops through element up till last unsorted while comparing min
//to each element, if a smaller element is found, it is set to be
//the new min
CarListEntry current = this.head;
CarListEntry previous2 = null;
for (int j = 1; j < i; j++)
{
previous2 = current;
current = current.Next;
if (CarComparer(min.Car, current.Car) > 0)
{
min = current;
previous1 = previous2;
}
}
//Remove min
//Case1: minimum is at tail so it remains at tail and becomes first
//element of sorted list
//Case2: minimum is at head
if (min == this.head)
{
head = head.Next;
}
//Case3: minimum is anywhere else
else if (min != this.tail)
{
previous1.Next = min.Next;
}
//Attach min to tail
this.tail.Next = min;
this.tail = min;
min.Next = null;
}
}
/// <summary>
/// Usuwa zaznaczony element
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Delete_Click(object sender, RoutedEventArgs e)
{
CarListEntry clrToRemove = (sender as MenuItem).DataContext as CarListEntry;
if (MessageBox.Show(string.Format("Jesteś pewien że chcesz usunąć {0}? Spowoduje do usunięcie {1} tankowań!", clrToRemove.Car.Name, clrToRemove.FuelingCount), "Pytanie", MessageBoxButton.OKCancel) == MessageBoxResult.OK)
{
CarHolder.Instance.Cars.Remove(clrToRemove.Car);
foreach (Refueling rf in clrToRemove.RefuelingList)
{
RefuelingHolder.Instance.Refuels.Remove(rf);
}
CarHolder.Instance.SaveDataInStorage();
RefuelingHolder.Instance.SaveDataInStorage();
InitList();
}
}
/// <summary>
/// Inicjalizuje dane na widoku
/// </summary>
private void InitList()
{
List <CarListEntry> data = new List <CarListEntry>();
if (CarHolder.Instance.Cars.Count == 0)
{
MessageBox.Show("Dodaj samochód do systemu aby wyświetlić jego statystyki!", "Informacja", MessageBoxButton.OK);
NavigationService.GoBack();
}
else
{
CarListEntry entry = null;
foreach (Car car in CarHolder.Instance.Cars)
{
entry = new CarListEntry();
entry.Car = car;
entry.RefuelingList = RefuelingHolder.Instance.Refuels.Where(p => p.RefueledCar.Equals(car)).Select(p => p).ToList <Refueling>();
data.Add(entry);
}
}
lbCarsInfo.ItemsSource = data;
}
