/// <summary>
/// Reorders the specified items.
/// </summary>
/// <param name="items">The items.</param>
/// <param name="oldIndex">The old index.</param>
/// <param name="newIndex">The new index.</param>
/// <returns>List of Ids who's order changed</returns>
public virtual List <int> Reorder(List <T> items, int oldIndex, int newIndex)
{
var Ids = new List <int>();
T movedItem = items[oldIndex];
if (movedItem != null)
{
Ids.Add(movedItem.Id);
items.RemoveAt(oldIndex);
if (newIndex >= items.Count)
{
items.Add(movedItem);
}
else
{
items.Insert(newIndex, movedItem);
}
int order = 0;
foreach (T item in items)
{
IOrdered orderedItem = item as IOrdered;
if (orderedItem != null)
{
if (orderedItem.Order != order)
{
Ids.Add(item.Id);
orderedItem.Order = order;
}
}
order++;
}
}
return(Ids);
}
public OrderOps(IOrdered <X> Ordered) => this.Ordered = Ordered;
/// <summary> Binary search for an object</summary>
/// <param name="array">The array of <code>Ordered</code> objects.
/// </param>
/// <param name="ref_Renamed">The name to search for.
/// </param>
/// <returns> The index at which reference was found or is to be inserted.
/// </returns>
public static int Bsearch(IOrdered[] array, IOrdered ref_Renamed)
{
return(Bsearch(array, ref_Renamed, 0, array.Length - 1));
}
/// <summary> Binary search for an object</summary>
/// <param name="vector">The vector of <code>Ordered</code> objects.
/// </param>
/// <param name="ref_Renamed">The name to search for.
/// </param>
/// <returns> The index at which reference was found or is to be inserted.
/// </returns>
public static int bsearch(System.Collections.ArrayList vector, IOrdered ref_Renamed)
{
return(Bsearch(vector, ref_Renamed, 0, vector.Count - 1));
}
/// <summary> Binary search for an object</summary>
/// <param name="set_Renamed">The collection of <code>Ordered</code> objects.
/// </param>
/// <param name="ref_Renamed">The name to search for.
/// </param>
/// <returns> The index at which reference was found or is to be inserted.
/// </returns>
public static int Bsearch(ISortable set_Renamed, IOrdered ref_Renamed)
{
return(Bsearch(set_Renamed, ref_Renamed, set_Renamed.First(), set_Renamed.Last()));
}
public static System.Windows.Input.ICommand SwipeTimeout(IOrdered line)
{
return(new Command(() =>
{
}));
}
public static System.Windows.Input.ICommand GetMoveSectionCmd(CommonBaseVM vm, IOrdered line)
{
return(new Command((arg) =>
{
line.TimeStamp = DateTime.Now;
Task.Factory.StartNew(() => Task.Delay(3000))
.ContinueWith((t, x) =>
{
if ((DateTime.Now.Subtract((x as IOrdered).TimeStamp).TotalSeconds > 3))
{
(x as IOrdered).OrderImageName = "empty.png";
}
},
line);
SwipeAction swipe = (arg as SwipeAction?).Value;
SwipeType swipeType = SwipeType.None;
if ((swipe.Type & SwipeType.Up) != 0 || (swipe.Type & SwipeType.Left) != 0)
{
line.OrderImageName = "up.png";
swipeType = SwipeType.Up;
}
else if ((swipe.Type & SwipeType.Down) != 0 || (swipe.Type & SwipeType.Right) != 0)
{
line.OrderImageName = "down.png";
swipeType = SwipeType.Down;
}
else
{
line.OrderImageName = "empty.png";
}
if (swipe.Finished)
{
vm.Order.MoveOutputLine(line, -1, swipeType);
line.OrderImageName = "empty.png";
}
vm.RaiseChanges();
}));
}
/// <summary> Fetch the object at the given index.</summary>
/// <param name="index">The item number to get.
/// </param>
/// <param name="reuse">If this argument is not null, it is an object
/// acquired from a previous fetch that is no longer needed and
/// may be returned as the result if it makes mores sense to alter
/// and return it than to fetch or create a new element. That is, the
/// reuse object is garbage and may be used to avoid allocating a new
/// object if that would normally be the strategy.
/// </param>
/// <returns> The Ordered object at that index.
/// </returns>
public virtual IOrdered Fetch(int index, IOrdered reuse)
{
Cursor ret;
if (null != reuse)
{
ret = (Cursor) reuse;
ret.mPosition = mIndices[index];
ret.mPage = Page; // redundant
}
else
ret = new Cursor(Page, mIndices[index]);
return (ret);
}
/// <summary> Binary search for an object</summary>
/// <param name="array">The array of <code>Ordered</code> objects.
/// </param>
/// <param name="ref_Renamed">The name to search for.
/// </param>
/// <returns> The index at which reference was found or is to be inserted.
/// </returns>
public static int Bsearch(IOrdered[] array, IOrdered ref_Renamed)
{
return (Bsearch(array, ref_Renamed, 0, array.Length - 1));
}
/// <summary> Binary search for an object</summary>
/// <param name="array">The array of <code>Ordered</code> objects.
/// </param>
/// <param name="ref_Renamed">The name to search for.
/// </param>
/// <param name="lo">The lower index within which to look.
/// </param>
/// <param name="hi">The upper index within which to look.
/// </param>
/// <returns> The index at which reference was found or is to be inserted.
/// </returns>
public static int Bsearch(IOrdered[] array, IOrdered ref_Renamed, int lo, int hi)
{
int num;
int mid;
int half;
int result;
int ret;
ret = - 1;
num = (hi - lo) + 1;
while ((- 1 == ret) && (lo <= hi))
{
half = num / 2;
mid = lo + ((0 != (num & 1))?half:half - 1);
result = ref_Renamed.Compare(array[mid]);
if (0 == result)
ret = mid;
else if (0 > result)
{
hi = mid - 1;
num = ((0 != (num & 1))?half:half - 1);
}
else
{
lo = mid + 1;
num = half;
}
}
if (- 1 == ret)
ret = lo;
return (ret);
}
/// <summary> Binary search for an object</summary>
/// <param name="vector">The vector of <code>Ordered</code> objects.
/// </param>
/// <param name="ref_Renamed">The name to search for.
/// </param>
/// <returns> The index at which reference was found or is to be inserted.
/// </returns>
public static int bsearch(System.Collections.ArrayList vector, IOrdered ref_Renamed)
{
return (Bsearch(vector, ref_Renamed, 0, vector.Count - 1));
}
/// <summary> Binary search for an object</summary>
/// <param name="set_Renamed">The collection of <code>Ordered</code> objects.
/// </param>
/// <param name="ref_Renamed">The name to search for.
/// </param>
/// <returns> The index at which reference was found or is to be inserted.
/// </returns>
public static int Bsearch(ISortable set_Renamed, IOrdered ref_Renamed)
{
return (Bsearch(set_Renamed, ref_Renamed, set_Renamed.First(), set_Renamed.Last()));
}
/// <summary> Binary search for an object</summary>
/// <param name="set_Renamed">The collection of <code>Ordered</code> objects.
/// </param>
/// <param name="ref_Renamed">The name to search for.
/// </param>
/// <param name="lo">The lower index within which to look.
/// </param>
/// <param name="hi">The upper index within which to look.
/// </param>
/// <returns> The index at which reference was found or is to be inserted.
/// </returns>
public static int Bsearch(ISortable set_Renamed, IOrdered ref_Renamed, int lo, int hi)
{
int num;
int mid;
IOrdered ordered;
int half;
int result;
int ret;
ret = - 1;
num = (hi - lo) + 1;
ordered = null;
while ((- 1 == ret) && (lo <= hi))
{
half = num / 2;
mid = lo + ((0 != (num & 1))?half:half - 1);
ordered = set_Renamed.Fetch(mid, ordered);
result = ref_Renamed.Compare(ordered);
if (0 == result)
ret = mid;
else if (0 > result)
{
hi = mid - 1;
num = ((0 != (num & 1))?half:half - 1);
}
else
{
lo = mid + 1;
num = half;
}
}
if (- 1 == ret)
ret = lo;
return (ret);
}
/// <summary> Sort a Hashtable.</summary>
/// <param name="h">A Hashtable with String or Ordered keys.
/// </param>
/// <returns> A sorted array of the keys.
/// </returns>
public static System.Object[] QuickSort(System.Collections.Hashtable h)
{
System.Collections.IEnumerator e;
bool are_strings;
System.Object[] ret;
// make the array
ret = new IOrdered[h.Count];
e = h.Keys.GetEnumerator();
are_strings = true; // until proven otherwise
for (int i = 0; i < ret.Length; i++)
{
ret[i] = e.Current;
if (are_strings && !(ret[i] is System.String))
are_strings = false;
}
// sort it
if (are_strings)
QuickSort((System.String[]) ret);
else
QuickSort((IOrdered[]) ret);
return (ret);
}
/// <summary> This is a generic version of C.A.R Hoare's Quick Sort algorithm.
/// This will handle arrays that are already sorted,
/// and arrays with duplicate keys.
/// <p>
/// If you think of a one dimensional array as going from
/// the lowest index on the left to the highest index on the right
/// then the parameters to this function are lowest index or
/// left and highest index or right.
/// </summary>
/// <param name="a">An array of <code>Ordered</code> items.
/// </param>
/// <param name="lo0">Left boundary of array partition.
/// </param>
/// <param name="hi0">Right boundary of array partition.
/// </param>
public static void QuickSort(IOrdered[] a, int lo0, int hi0)
{
int lo = lo0;
int hi = hi0;
IOrdered mid;
if (hi0 > lo0)
{
// arbitrarily establish partition element as the midpoint of the array
mid = a[(lo0 + hi0) / 2];
// loop through the vector until indices cross
while (lo <= hi)
{
// find the first element that is greater than or equal to
// the partition element starting from the left index
while ((lo < hi0) && (0 > a[lo].Compare(mid)))
++lo;
// find an element that is smaller than or equal to
// the partition element starting from the right Index.
while ((hi > lo0) && (0 < a[hi].Compare(mid)))
--hi;
// if the indexes have not crossed, swap
if (lo <= hi)
Swap(a, lo++, hi--);
}
// if the right index has not reached the left side of array
// must now sort the left partition
if (lo0 < hi)
QuickSort(a, lo0, hi);
// if the left index has not reached the right side of array
// must now sort the right partition
if (lo < hi0)
QuickSort(a, lo, hi0);
}
}
/// <summary> This is a generic version of C.A.R Hoare's Quick Sort algorithm.
/// This will handle arrays that are already sorted,
/// and arrays with duplicate keys.
/// <p>
/// Equivalent to:
/// <pre>
/// QuickSort (a, 0, a.length - 1);
/// </pre>
/// </summary>
/// <param name="a">An array of <code>Ordered</code> items.
/// </param>
public static void QuickSort(IOrdered[] a)
{
QuickSort(a, 0, a.Length - 1);
}