private IComparer GetSortComparer(ListSortDescriptionCollection sortDescriptions)
{
bool needSubstitution = false;
if (_sortSubstitutions.Count > 0)
{
foreach (ListSortDescription sortDescription in sortDescriptions)
{
if (_sortSubstitutions.ContainsKey(sortDescription.PropertyDescriptor.Name))
{
needSubstitution = true;
break;
}
}
if (needSubstitution)
{
ListSortDescription[] sorts = new ListSortDescription[sortDescriptions.Count];
sortDescriptions.CopyTo(sorts, 0);
for (int i = 0; i < sorts.Length; i++)
{
if (_sortSubstitutions.ContainsKey(sorts[i].PropertyDescriptor.Name))
{
sorts[i] = new ListSortDescription(((SortSubstitutionPair)_sortSubstitutions[sorts[i].PropertyDescriptor.Name]).Substitute,
sorts[i].SortDirection);
}
}
sortDescriptions = new ListSortDescriptionCollection(sorts);
}
}
return(new SortListPropertyComparer(sortDescriptions));
}
/// <summary>
/// Core sort function. All sorting function uses this method.
/// If the ListSortDescriptionCollection are the same stored
/// in the collection, the collection is sorted yet,
/// so it returns immediately
/// </summary>
/// <param name="sorts">List of SortDescription</param>
public void ApplySort(ListSortDescriptionCollection sorts)
{
if (sorts == null)
{
return;
}
bool bMatch = false;
if (_IsSorted && _SortDescriptions != null && _SortDescriptions.Count == sorts.Count)
{
bMatch = true;
for (int i = 0; i < sorts.Count; i++)
{
ListSortDescription ldsSource = sorts[i];
ListSortDescription ldsTarget = _SortDescriptions[i];
if (ldsSource.PropertyDescriptor != ldsTarget.PropertyDescriptor ||
ldsSource.SortDirection != ldsTarget.SortDirection)
{
bMatch = false;
break;
}
}
}
// descriptors are the same of previous sort operation? just exit
if (bMatch)
{
return;
}
_SortDescriptions = sorts;
Sort(new DescriptorComparison(sorts)); // IComparer<T>
_IsSorted = true;
}
public void Ctor_PropertyDescriptor_ListSortDirection(PropertyDescriptor property, ListSortDirection direction)
{
var sortDescription = new ListSortDescription(property, direction);
Assert.Same(property, sortDescription.PropertyDescriptor);
Assert.Equal(direction, sortDescription.SortDirection);
}
private ListSortDescriptionCollection ParseOrderBy(string orderBy)
{
if ((orderBy == null) || (orderBy.Length == 0))
{
throw new ArgumentNullException("orderBy");
}
string[] textArray = orderBy.Split(new char[] { ',' });
ListSortDescription[] sorts = new ListSortDescription[textArray.Length];
ListSortDirection ascending = ListSortDirection.Ascending;
for (int i = 0; i < textArray.Length; i++)
{
ascending = ListSortDirection.Ascending;
string text = textArray[i].Trim();
if (text.ToUpper().EndsWith(" DESC"))
{
ascending = ListSortDirection.Descending;
text = text.Substring(0, text.ToUpper().LastIndexOf(" DESC"));
}
else if (text.ToUpper().EndsWith(" ASC"))
{
text = text.Substring(0, text.ToUpper().LastIndexOf(" ASC"));
}
text = text.Trim();
PropertyDescriptor property = this.m_PropertyDescriptors[text];
if (property == null)
{
throw new ArgumentException(string.Format("The property \"{0}\" is not a valid property.", text));
}
sorts[i] = new ListSortDescription(property, ascending);
}
return(new ListSortDescriptionCollection(sorts));
}
void IBindingListView.ApplySort(ListSortDescriptionCollection sorts)
{
ListSortDescription[] sortArray = new ListSortDescription[sorts.Count + 1];
sorts.CopyTo(sortArray, 1);
sortArray[0] = fixedSort;
ApplySort(sortArray);
}
/// <summary>
/// Creates a <seealso cref="ListSortDescriptionCollection"/> from the sort descriptions in the collection.
/// </summary>
/// <returns>
/// A <see cref="ListSortDescriptionCollection"/> representing the sort descriptions.
/// </returns>
public ListSortDescriptionCollection GetListSortDescriptions()
{
if (targetType == null)
{
throw new ArgumentNullException("targetType");
}
var props = TypeDescriptor.GetProperties(targetType);
var sorts = new ListSortDescription[descriptions.Count];
for (var i = 0; i < descriptions.Count; i++)
{
var desc = descriptions[i];
if (desc.PropertyDescriptor != null)
{
sorts[i] = new ListSortDescription(desc.PropertyDescriptor, desc.Direction);
}
else
{
sorts[i] = new ListSortDescription(props.Find(desc.PropertyName, true), desc.Direction);
}
}
return(new ListSortDescriptionCollection(sorts));
}
public void Sort(IDictionary <string, bool> columns)
{
if (columns != null && columns.Count > 0)
{
Guid selectedId = default(Guid);
if (SelectedRow != null && SelectedRow.Index > -1)
{
selectedId = (Guid)SelectedRow.Cells[QueueColumns.Id.Name].Value;
}
ListSortDescription[] sortArray = new ListSortDescription[columns.Count];
int columnIndex = 0;
foreach (KeyValuePair <string, bool> column in columns)
{
ListSortDirection direction = (column.Value) ? ListSortDirection.Ascending : ListSortDirection.Descending;
PropertyDescriptor property = TypeDescriptor.GetProperties(typeof(IMediaItem))[QueueColumns.ColumnsByPropertyName[column.Key].PropertyName];
sortArray[columnIndex] = new ListSortDescription(property, direction);
columnIndex++;
}
ListSortDescriptionCollection sorts = new ListSortDescriptionCollection(sortArray);
grid.Sort(sorts);
DrawSortGlyphs(columns);
}
}
protected override void OnSortingRangeRows(SortRangeRowsEventArgs e)
{
base.OnSortingRangeRows(e);
if (DataSource == null || DataSource.AllowSort == false)
{
return;
}
System.ComponentModel.PropertyDescriptor propertyCol = Columns[e.KeyColumn].PropertyColumn;
if (propertyCol != null)
{
ListSortDirection direction;
if (e.Ascending)
{
direction = ListSortDirection.Ascending;
}
else
{
direction = ListSortDirection.Descending;
}
ListSortDescription[] sortsArray = new ListSortDescription[1];
sortsArray[0] = new ListSortDescription(propertyCol, direction);
DataSource.ApplySort(new ListSortDescriptionCollection(sortsArray));
}
else
{
DataSource.ApplySort(null);
}
}
/// <summary>
/// Multiple property compare method.
/// </summary>
/// <param name="x">The first object to compare.</param>
/// <param name="y">The second object to compare.</param>
/// <param name="index">Zero based index of SortDescriptions collection.</param>
protected virtual int RecursiveCompareInternal(T x, T y, int index)
{
if (index >= SortDescriptions.Count)
{
return(0); // termination condition
}
/* Get property values */
ListSortDescription listSortDesc = SortDescriptions[index];
object xValue = listSortDesc.PropertyDescriptor.GetValue(x);
object yValue = listSortDesc.PropertyDescriptor.GetValue(y);
int result;
/* Determine sort order */
if (listSortDesc.SortDirection == ListSortDirection.Ascending)
{
result = CompareAscending(xValue, yValue);
}
else
{
result = CompareDescending(xValue, yValue);
}
/* If the properties are equal, compare the next property */
if (result == 0)
{
return(RecursiveCompareInternal(x, y, ++index));
}
return(result);
}
protected override void ApplySortCore(PropertyDescriptor property, ListSortDirection direction)
{
_sortProperty = property;
_sortDirection = direction;
// Get list to sort
List <T> items = Items as List <T>;
// Apply and set the sort, if items to sort
if (items != null)
{
ListSortDescription sort = new ListSortDescription(property, direction);
ListSortDescription[] sortArr = new ListSortDescription[_sortDescriptions.Count + 1];
_sortDescriptions.CopyTo(sortArr, 1);
sortArr[0] = sort;
_sortDescriptions = new ListSortDescriptionCollection(sortArr);
ApplySort(_sortDescriptions);
_isSorted = true;
}
else
{
_isSorted = false;
}
// Let bound controls know they should refresh their views
OnListChanged(new ListChangedEventArgs(ListChangedType.Reset, -1));
}
// NOTE: Probably the parsing can be improved
void ProcessSortString(string sort)
{
// Only keep simple whitespaces in the middle
sort = Regex.Replace(sort, "( )+", " ");
string [] properties = sort.Split(',');
PropertyDescriptorCollection prop_descs = GetItemProperties(null);
if (properties.Length == 1)
{
ListSortDescription sort_desc = GetListSortDescription(prop_descs, properties [0]);
ApplySort(sort_desc.PropertyDescriptor, sort_desc.SortDirection);
}
else
{
if (!SupportsAdvancedSorting)
{
throw new ArgumentException("value");
}
ListSortDescription [] sort_descs = new ListSortDescription [properties.Length];
for (int i = 0; i < properties.Length; i++)
{
sort_descs [i] = GetListSortDescription(prop_descs, properties [i]);
}
ApplySort(new ListSortDescriptionCollection(sort_descs));
}
}
void IBindingList.ApplySort(PropertyDescriptor property, ListSortDirection direction)
{
ListSortDescription[] sorts = new ListSortDescription[1];
sorts[0] = new ListSortDescription(property, direction);
ListSortDescriptionCollection lsdc = new ListSortDescriptionCollection(sorts);
this.ApplySort(lsdc);
}
/// <summary>
/// Sorts the list based on a PropertyDescriptor and a ListSortDirection.
/// </summary>
/// <param name="property">The <see cref="PropertyDescriptor"/> to sort by.</param>
/// <param name="direction">One of the <see cref="ListSortDirection"/> values.</param>
public void ApplySort(PropertyDescriptor property, ListSortDirection direction)
{
ListSortDescription listSortDescription = new ListSortDescription(property, direction);
ListSortDescription[] listSortDescriptions = new ListSortDescription[] { listSortDescription };
ListSortDescriptionCollection sorts = new ListSortDescriptionCollection(listSortDescriptions);
ApplySort(sorts);
}
protected virtual void OnApplySort(ListSortDescriptionCollection sorts)
{
this.sortOrder.Clear();
this.sortDescriptions = sorts;
foreach (object obj in ((IEnumerable)sorts))
{
ListSortDescription listSortDescription = (ListSortDescription)obj;
this.sortOrder.Add(new QueueViewerSortOrderEntry(listSortDescription.PropertyDescriptor.Name, listSortDescription.SortDirection));
}
this.InternalSort();
}
public ConfigObjectComparer(ListSortDescription sort)
{
if (sort == null)
{
throw new ArgumentNullException("sort");
}
this.sorts = new ListSortDescriptionCollection(new ListSortDescription[]
{
sort
});
}
protected Comparison <T> GetComparer(ListSortDescription sort)
{
if (__cComparers != null)
{
string sKey = sort.PropertyDescriptor.DisplayName + ((sort.SortDirection == ListSortDirection.Ascending) ? "_A" : "_D");
Comparison <T> cComparison = null;
__cComparers.TryGetValue(sKey, out cComparison);
return(cComparison);
}
return(null);
}
public SortComparer(string[] fieldNames, ListSortDirection listSortDirection)
{
List <ListSortDescription> listSortDescriptions = new List <ListSortDescription>();
foreach (string fieldName in fieldNames)
{
PropertyDescriptor propertyDescriptor = TypeDescriptor.GetProperties(typeof(T))[fieldName];
ListSortDescription listSortDescription = new ListSortDescription(propertyDescriptor, listSortDirection);
listSortDescriptions.Add(listSortDescription);
}
_listSortDescriptionCollection = new ListSortDescriptionCollection(listSortDescriptions.ToArray());
}
int RecursiveCompareInternal(T x, T y, int index)
{
if (index >= _SortCollection.Count)
{
return(0);
}
ListSortDescription listSortDesc = _SortCollection[index];
object xValue = listSortDesc.PropertyDescriptor.GetValue(x);
object yValue = listSortDesc.PropertyDescriptor.GetValue(y);
int retValue = CompareValues(xValue, yValue, listSortDesc.SortDirection);
return((retValue == 0)
? RecursiveCompareInternal(x, y, ++index)
: retValue);
}
private int RecursiveCompareInternal(T x, T y, int index)
{
if (index >= this.m_SortCollection.Count)
{
return(0);
}
ListSortDescription description = this.m_SortCollection[index];
object xValue = description.PropertyDescriptor.GetValue(x);
object yValue = description.PropertyDescriptor.GetValue(y);
int num = this.CompareValues(xValue, yValue, description.SortDirection);
if (num == 0)
{
return(this.RecursiveCompareInternal(x, y, ++index));
}
return(num);
}
private int RecursiveCompareInternal(T x, T y, int index)
{
if (index >= m_SortCollection.Count)
{
return(0); // termination condition
}
ListSortDescription listSortDesc = m_SortCollection[index];
object xValue = null;
object yValue = null;
//HACK: PropertyDescriptor.GetValue() is throwing an 'Object Does Not Match Target Type'
// exception so I'm using the PropertyInfo instead. I can't figure out the cause.
//PropertyDescriptor prop = listSortDesc.PropertyDescriptor;
PropertyInfo prop = typeof(T).GetProperty(listSortDesc.PropertyDescriptor.Name);
if (prop != null)
{
xValue = prop.GetValue(x, null);
yValue = prop.GetValue(y, null);
//object xValue = listSortDesc.PropertyDescriptor.GetValue(x);
//object yValue = listSortDesc.PropertyDescriptor.GetValue(y);
}
if (xValue == null)
{
xValue = string.Empty;
}
if (yValue == null)
{
yValue = string.Empty;
}
int retValue = CompareValues(xValue,
yValue, listSortDesc.SortDirection);
if (retValue == 0)
{
return(RecursiveCompareInternal(x, y, ++index));
}
else
{
return(retValue);
}
}
int IComparer.Compare(object x, object y)
{
int num = 0;
if (!typeof(ConfigObject).IsAssignableFrom(x.GetType()) || !typeof(ConfigObject).IsAssignableFrom(x.GetType()))
{
throw new ArgumentException();
}
if (x != null && y != null)
{
if (this.sorts != null)
{
using (IEnumerator enumerator = ((IEnumerable)this.sorts).GetEnumerator())
{
while (enumerator.MoveNext())
{
object obj = enumerator.Current;
ListSortDescription listSortDescription = (ListSortDescription)obj;
string name = listSortDescription.PropertyDescriptor.Name;
num = this.CompareObjectProperties(x, y, listSortDescription.PropertyDescriptor.Name, listSortDescription.SortDirection == ListSortDirection.Descending);
if (num != 0)
{
break;
}
}
return(num);
}
}
num = this.CompareObjectProperties(x, y, this.propertyToSort, this.sortDirection == ListSortDirection.Descending);
}
else if (x == null && y != null)
{
num = -1;
}
else if (y == null && x != null)
{
num = 1;
}
else
{
num = 0;
}
return(num);
}
private int RecursiveCompareInternal(T x, T y, int index)
{
if (index >= _listSortDescriptionCollection.Count)
{
return(0); // termination condition
}
ListSortDescription listSortDesc = _listSortDescriptionCollection[index];
object xValue = listSortDesc.PropertyDescriptor.GetValue(x);
object yValue = listSortDesc.PropertyDescriptor.GetValue(y);
int retValue = CompareValues(xValue, yValue, listSortDesc.SortDirection);
if (retValue == 0)
{
return(RecursiveCompareInternal(x, y, ++index));
}
return(retValue);
}
public ExDataView(DataTable dataSource, string sortProperty, ListSortDirection sortDirection)
{
if (dataSource == null)
{
throw new ArgumentNullException();
}
this.parent = dataSource.DefaultView;
this._dataSource = dataSource;
if (!SupportsSorting || !SupportsAdvancedSorting)
{
throw new InvalidOperationException("Advanced sorting is required");
}
fixedSort = new ListSortDescription(GetItemProperties(null)[sortProperty], sortDirection);
RemoveSort();
}
/// <summary>
/// 解析orderby字符串到ListSortDescription中
/// </summary>
/// <param name="orderBy">类似Sql排序的排序串</param>
/// <returns></returns>
private ListSortDescriptionCollection ParseOrderBy(string orderBy)
{
if (orderBy == null || orderBy.Length == 0)
{
throw new ArgumentNullException("orderBy");
}
string[] props = orderBy.Split(',');
ListSortDescription[] sortProps = new ListSortDescription[props.Length];
string prop;
ListSortDirection sortDirection = ListSortDirection.Ascending;
for (int i = 0; i < props.Length; i++)
{
//Default to Ascending
sortDirection = ListSortDirection.Ascending;
prop = props[i].Trim();
if (prop.ToUpper().EndsWith(" DESC"))
{
sortDirection = ListSortDirection.Descending;
prop = prop.Substring(0, prop.ToUpper().LastIndexOf(" DESC"));
}
else if (prop.ToUpper().EndsWith(" ASC"))
{
prop = prop.Substring(0, prop.ToUpper().LastIndexOf(" ASC"));
}
prop = prop.Trim();
//Get the appropriate descriptor
PropertyDescriptor propertyDescriptor = m_PropertyDescriptors[prop];
if (propertyDescriptor == null)
{
throw new ArgumentException(string.Format("The property \"{0}\" is not a valid property.", prop));
}
sortProps[i] = new ListSortDescription(propertyDescriptor, sortDirection);
}
return(new ListSortDescriptionCollection(sortProps));
}
public virtual void ApplySort(ListSortDescriptionCollection sorts)
{
if (sorts == null)
{
throw new ArgumentNullException("sorts");
}
List <ListSortDescription> list = new List <ListSortDescription>();
foreach (object obj in ((IEnumerable)sorts))
{
ListSortDescription listSortDescription = (ListSortDescription)obj;
if (listSortDescription == null || listSortDescription.PropertyDescriptor == null || !this.DataTableLoader.Table.Columns.Contains(listSortDescription.PropertyDescriptor.Name))
{
throw new ArgumentException("sorts");
}
list.Add(new ListSortDescription(listSortDescription.PropertyDescriptor, listSortDescription.SortDirection));
}
this.DataView.Sort = this.CreateSortString(sorts);
this.SortDescriptions = new ListSortDescriptionCollection(list.ToArray());
}
private string CreateSortString(ListSortDescriptionCollection sorts)
{
StringBuilder stringBuilder = new StringBuilder();
bool flag = true;
foreach (object obj in ((IEnumerable)sorts))
{
ListSortDescription listSortDescription = (ListSortDescription)obj;
if (!flag)
{
stringBuilder.Append(',');
}
stringBuilder.Append(this.CreateSortString(listSortDescription.PropertyDescriptor, listSortDescription.SortDirection));
if (flag)
{
flag = false;
}
}
return(stringBuilder.ToString());
}
protected override int RecursiveCompareInternal(WorkUnitRow xVal, WorkUnitRow yVal, int index)
{
if (index >= SortDescriptions.Count)
{
return(0); // termination condition
}
/* Get property values */
ListSortDescription listSortDesc = SortDescriptions[index];
object xValue = listSortDesc.PropertyDescriptor.GetValue(xVal);
object yValue = listSortDesc.PropertyDescriptor.GetValue(yVal);
long xIdValue = xVal.ID;
long yIdValue = yVal.ID;
int result;
/* Determine sort order */
if (listSortDesc.SortDirection == ListSortDirection.Ascending)
{
result = CompareAscending(xValue, yValue);
}
else
{
result = CompareDescending(xValue, yValue);
}
/* If the properties are equal, compare the next property */
if (result == 0)
{
result = RecursiveCompareInternal(xVal, yVal, ++index);
}
// if values are equal, sort via the entry id (asc)
if (result == 0)
{
result = CompareAscending(xIdValue, yIdValue);
}
return(result);
}
string GetSortExpression()
{
if (sorts.Count == 0)
{
return(string.Empty);
}
var sortexpr = new StringBuilder();
for (int i = 0; i < sorts.Count; i++)
{
if (i != 0)
{
sortexpr.Append(", ");
}
ListSortDescription lsd = sorts [i];
sortexpr.AppendFormat("{0} {1}",
lsd.PropertyDescriptor.Name,
(lsd.SortDirection == ListSortDirection.Ascending) ? "ASC" : "DESC");
}
return(sortexpr.ToString());
}
/// <summary>
/// Compares two objects and returns a item indicating whether one is less than, equal to, or greater than the other.
/// </summary>
/// <param name="x">The first object to compare.</param>
/// <param name="y">The second object to compare.</param>
/// <returns>
/// Value Condition Less than zero<paramref name="x" /> is less than <paramref name="y" />.Zero<paramref name="x" /> equals <paramref name="y" />.Greater than zero<paramref name="x" /> is greater than <paramref name="y" />.
/// </returns>
protected virtual int OnCompare(IEntityItemView <T> x, IEntityItemView <T> y)
{
/*
* Il confronto viene fatto scorrendo tutti
* i ListSortDescription...
*
* Diventa necessario confrontare i criteri successivi
* solo se il precedente non ha dato risultati utili, cioè
* i due valori confrontati sono uguali...
*
* Il classico esempio è Cognome ASC, Nome DESC confronto i
* nomi solo se i Cognomi sono uguali
*/
int retVal = 0;
if (this.SortDescriptions.Count == 1)
{
ListSortDescription sd = this.SortDescriptions[0];
object valueX = sd.PropertyDescriptor.GetValue(x);
object valueY = sd.PropertyDescriptor.GetValue(y);
retVal = EntityItemViewSortComparer <T> .Compare(valueX, valueY, sd.SortDirection);
}
else
{
foreach (ListSortDescription sd in this.SortDescriptions)
{
if (retVal == 0)
{
object valueX = sd.PropertyDescriptor.GetValue(x);
object valueY = sd.PropertyDescriptor.GetValue(y);
retVal = EntityItemViewSortComparer <T> .Compare(valueX, valueY, sd.SortDirection);
}
}
}
return(retVal);
}
private int RecursiveCompareInternal(T x, T y, int index)
{
if (index >= m_SortCollection.Count)//递归比较结束条件
{
return(0);
}
ListSortDescription listSortDesc = m_SortCollection[index];
object xValue = listSortDesc.PropertyDescriptor.GetValue(x);
object yValue = listSortDesc.PropertyDescriptor.GetValue(y);
int retValue = CompareValues(xValue, yValue, listSortDesc.SortDirection);
if (retValue == 0)
{
return(RecursiveCompareInternal(x, y, ++index));
}
else
{
return(retValue);
}
}
public ListSortDescriptionCollection(ListSortDescription[] sorts) {}