Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx40 / Tools / System.Activities.Presentation / System / Activities / Presentation / Base / Interaction / Model / ModelItemCollection.cs / 1305376 / ModelItemCollection.cs
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Activities.Presentation.Model {
using System.Activities.Presentation.Internal.Properties;
using System.Activities.Presentation;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Globalization;
using System.Windows;
///
/// ModelItemCollection derives from ModelItem and implements
/// support for a collection of items.
///
/// ModelItemCollection defines a static attached property called
/// Item. This property is returned from the Properties
/// enumeration of the collection, in addition to any properties
/// defined on the collection. The Item property represents all
/// the items in the collection and is defined as type
/// IEnumerable of ModelItem. All items in the collection have
/// their Source property set to this property. The property�s metadata
/// marks it non browsable and non-serializable. The Item property is a
/// �pseudo� property because it is not actually set on the model. The
/// value it points to is the ModelItemCollection itself.
///
public abstract class ModelItemCollection : ModelItem, IList, IList, INotifyCollectionChanged {
///
/// Creates a new ModelItemCollection.
///
protected ModelItemCollection() { }
///
/// Returns the item at the given index. Sets the item at the
/// given index to the given value.
///
/// The zero-based index into the collection.
/// if value is null.
/// if index is less than 0 or greater than or equal to count.
public abstract ModelItem this[int index] { get; set; }
///
/// Returns the count of items in the collection.
///
public abstract int Count { get; }
///
/// Returns true if the collection is a fixed size.
/// The default implementation returns true if the
/// collection is read only.
///
protected virtual bool IsFixedSize {
get { return IsReadOnly; }
}
///
/// Returns true if the collection cannot be modified.
///
public abstract bool IsReadOnly { get; }
///
/// Protected access to ICollection.IsSynchronized.
///
protected virtual bool IsSynchronized {
get { return false; }
}
///
/// Protected access to the SyncRoot object used to synchronize
/// this collection. The default value returns "this".
///
protected virtual object SyncRoot {
get { return this; }
}
///
/// This event is raised when the contents of this collection change.
///
public abstract event NotifyCollectionChangedEventHandler CollectionChanged;
///
/// Adds the item to the collection.
///
///
/// if item is null.
/// if the collection is read only.
public abstract void Add(ModelItem item);
///
/// Adds the given value to the collection. This will create an item
/// for the value. It returns the newly created item.
///
///
/// an item representing the value
/// if value is null.
/// if the collection is read only.
public abstract ModelItem Add(object value);
///
/// Clears the contents of the collection.
///
/// if the collection is read only.
public abstract void Clear();
///
/// Returns true if the collection contains the given item.
///
///
/// if item is null.
public abstract bool Contains(ModelItem item);
///
/// Returns true if the collection contains the given value.
///
///
/// if value is null.
public abstract bool Contains(object value);
//
// Helper method that verifies that objects can be upcast to
// the correct type.
//
private static ModelItem ConvertType(object value) {
try {
return (ModelItem)value;
}
catch (InvalidCastException) {
throw FxTrace.Exception.AsError(new ArgumentException(
string.Format(CultureInfo.CurrentCulture,
Resources.Error_ArgIncorrectType,
"value", typeof(ModelItem).FullName)));
}
}
///
/// Copies the contents of the collection into the given array.
///
/// if array is null.
///
/// if arrayIndex is outside the bounds of the items array or if there is
/// insuffient space in the array to hold the collection.
///
public abstract void CopyTo(ModelItem[] array, int arrayIndex);
///
/// Returns an enumerator for the items in the collection.
///
/// GetEnumerator();
///
/// Returns the index of the given item or -1 if the item does not exist.
///
///
/// if item is null.
public abstract int IndexOf(ModelItem item);
///
/// Inserts the item at the given location. To
/// move an item, use Move. If index is == Count this will insert the item
/// at the end. If it is zero it will insert at the beginning.
///
///
///
/// if item is null.
/// if index is less than 0 or greater than count.
public abstract void Insert(int index, ModelItem item);
///
/// Inserts the item at the given location. To
/// move an item, use Move. If index is == Count this will insert the item
/// at the end. If it is zero it will insert at the beginning.
///
///
///
/// an item representing the value
/// if value is null.
/// if index is less than 0 or greater than count.
public abstract ModelItem Insert(int index, object value);
///
/// Moves the item at fromIndex to toIndex. The value for toIndex is
/// always where you want the item to be according to how the collection
/// currently sits. This means that if you are moving an item to a higher
/// index you don�t have to account for the fact that the indexes will
/// shuffle when the item is removed from its current location.
///
///
/// The index of the item to move.
///
///
/// The index to move it to.
///
///
/// if fromIndex or toIndex is less than zero or greater than or
/// equal to Count.
///
public abstract void Move(int fromIndex, int toIndex);
///
/// Removes the item from the collection. This does nothing if the
/// item does not exist in the collection.
///
///
/// if item is null.
public abstract bool Remove(ModelItem item);
///
/// Removes the value from the collection. This does nothing if the
/// value does not exist in the collection.
///
///
/// if value is null.
public abstract bool Remove(object value);
///
/// Removes the item at the given index.
///
///
/// if index is less than 0 or greater than or equal to count.
public abstract void RemoveAt(int index);
///
/// This property is returned from the Properties enumeration of
/// the collection, in addition to any properties defined on the
/// collection. The Item property represents all the items in
/// the collection and is defined as type IEnumerable of ModelItem.
/// All items in the collection have their Source property set to
/// this property. The property�s metadata marks it non browsable
/// and non-serializable. The Item property is a �pseudo� property
/// because it is not actually set on the model. The value it points
/// to is the ModelItemCollection itself.
///
public static readonly DependencyProperty ItemProperty = DependencyProperty.RegisterAttachedReadOnly(
"Item",
typeof(IEnumerable),
typeof(ModelItemCollection), null).DependencyProperty;
#region IList Members
///
/// IList Implementation maps back to public API.
///
int IList.Add(object value) {
Add(value);
return Count - 1;
}
///
/// IList Implementation maps back to public API.
///
void IList.Clear() {
Clear();
}
///
/// IList Implementation maps back to public API.
///
bool IList.Contains(object value) {
return Contains(value);
}
///
/// IList Implementation maps back to public API.
///
int IList.IndexOf(object value) {
return IndexOf(ConvertType(value));
}
///
/// IList Implementation maps back to public API.
///
void IList.Insert(int index, object value) {
Insert(index, value);
}
///
/// IList Implementation maps back to public API.
///
bool IList.IsFixedSize {
get { return IsFixedSize; }
}
///
/// IList Implementation maps back to public API.
///
bool IList.IsReadOnly {
get { return IsReadOnly; }
}
///
/// IList Implementation maps back to public API.
///
void IList.Remove(object value) {
Remove(value);
}
///
/// IList Implementation maps back to public API.
///
void IList.RemoveAt(int index) {
RemoveAt(index);
}
///
/// IList Implementation maps back to public API.
///
object IList.this[int index] {
get { return this[index]; }
set { this[index] = ConvertType(value); }
}
#endregion
#region ICollection Members
///
/// ICollection Implementation maps back to public API.
///
void ICollection.CopyTo(Array array, int index) {
for (int idx = 0; idx < Count; idx++) {
array.SetValue(this[idx], idx + index);
}
}
///
/// ICollection Implementation maps back to public API.
///
int ICollection.Count {
get { return Count; }
}
///
/// ICollection Implementation maps back to public API.
///
bool ICollection.IsSynchronized {
get { return IsSynchronized; }
}
///
/// ICollection Implementation maps back to public API.
///
object ICollection.SyncRoot {
get { return SyncRoot; }
}
#endregion
#region IEnumerable Members
///
/// IEnumerable Implementation maps back to public API.
///
IEnumerator IEnumerable.GetEnumerator() {
foreach (object o in this) {
yield return o;
}
}
#endregion
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Activities.Presentation.Model {
using System.Activities.Presentation.Internal.Properties;
using System.Activities.Presentation;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Globalization;
using System.Windows;
///
/// ModelItemCollection derives from ModelItem and implements
/// support for a collection of items.
///
/// ModelItemCollection defines a static attached property called
/// Item. This property is returned from the Properties
/// enumeration of the collection, in addition to any properties
/// defined on the collection. The Item property represents all
/// the items in the collection and is defined as type
/// IEnumerable of ModelItem. All items in the collection have
/// their Source property set to this property. The property�s metadata
/// marks it non browsable and non-serializable. The Item property is a
/// �pseudo� property because it is not actually set on the model. The
/// value it points to is the ModelItemCollection itself.
///
public abstract class ModelItemCollection : ModelItem, IList, IList, INotifyCollectionChanged {
///
/// Creates a new ModelItemCollection.
///
protected ModelItemCollection() { }
///
/// Returns the item at the given index. Sets the item at the
/// given index to the given value.
///
/// The zero-based index into the collection.
/// if value is null.
/// if index is less than 0 or greater than or equal to count.
public abstract ModelItem this[int index] { get; set; }
///
/// Returns the count of items in the collection.
///
public abstract int Count { get; }
///
/// Returns true if the collection is a fixed size.
/// The default implementation returns true if the
/// collection is read only.
///
protected virtual bool IsFixedSize {
get { return IsReadOnly; }
}
///
/// Returns true if the collection cannot be modified.
///
public abstract bool IsReadOnly { get; }
///
/// Protected access to ICollection.IsSynchronized.
///
protected virtual bool IsSynchronized {
get { return false; }
}
///
/// Protected access to the SyncRoot object used to synchronize
/// this collection. The default value returns "this".
///
protected virtual object SyncRoot {
get { return this; }
}
///
/// This event is raised when the contents of this collection change.
///
public abstract event NotifyCollectionChangedEventHandler CollectionChanged;
///
/// Adds the item to the collection.
///
///
/// if item is null.
/// if the collection is read only.
public abstract void Add(ModelItem item);
///
/// Adds the given value to the collection. This will create an item
/// for the value. It returns the newly created item.
///
///
/// an item representing the value
/// if value is null.
/// if the collection is read only.
public abstract ModelItem Add(object value);
///
/// Clears the contents of the collection.
///
/// if the collection is read only.
public abstract void Clear();
///
/// Returns true if the collection contains the given item.
///
///
/// if item is null.
public abstract bool Contains(ModelItem item);
///
/// Returns true if the collection contains the given value.
///
///
/// if value is null.
public abstract bool Contains(object value);
//
// Helper method that verifies that objects can be upcast to
// the correct type.
//
private static ModelItem ConvertType(object value) {
try {
return (ModelItem)value;
}
catch (InvalidCastException) {
throw FxTrace.Exception.AsError(new ArgumentException(
string.Format(CultureInfo.CurrentCulture,
Resources.Error_ArgIncorrectType,
"value", typeof(ModelItem).FullName)));
}
}
///
/// Copies the contents of the collection into the given array.
///
/// if array is null.
///
/// if arrayIndex is outside the bounds of the items array or if there is
/// insuffient space in the array to hold the collection.
///
public abstract void CopyTo(ModelItem[] array, int arrayIndex);
///
/// Returns an enumerator for the items in the collection.
///
/// GetEnumerator();
///
/// Returns the index of the given item or -1 if the item does not exist.
///
///
/// if item is null.
public abstract int IndexOf(ModelItem item);
///
/// Inserts the item at the given location. To
/// move an item, use Move. If index is == Count this will insert the item
/// at the end. If it is zero it will insert at the beginning.
///
///
///
/// if item is null.
/// if index is less than 0 or greater than count.
public abstract void Insert(int index, ModelItem item);
///
/// Inserts the item at the given location. To
/// move an item, use Move. If index is == Count this will insert the item
/// at the end. If it is zero it will insert at the beginning.
///
///
///
/// an item representing the value
/// if value is null.
/// if index is less than 0 or greater than count.
public abstract ModelItem Insert(int index, object value);
///
/// Moves the item at fromIndex to toIndex. The value for toIndex is
/// always where you want the item to be according to how the collection
/// currently sits. This means that if you are moving an item to a higher
/// index you don�t have to account for the fact that the indexes will
/// shuffle when the item is removed from its current location.
///
///
/// The index of the item to move.
///
///
/// The index to move it to.
///
///
/// if fromIndex or toIndex is less than zero or greater than or
/// equal to Count.
///
public abstract void Move(int fromIndex, int toIndex);
///
/// Removes the item from the collection. This does nothing if the
/// item does not exist in the collection.
///
///
/// if item is null.
public abstract bool Remove(ModelItem item);
///
/// Removes the value from the collection. This does nothing if the
/// value does not exist in the collection.
///
///
/// if value is null.
public abstract bool Remove(object value);
///
/// Removes the item at the given index.
///
///
/// if index is less than 0 or greater than or equal to count.
public abstract void RemoveAt(int index);
///
/// This property is returned from the Properties enumeration of
/// the collection, in addition to any properties defined on the
/// collection. The Item property represents all the items in
/// the collection and is defined as type IEnumerable of ModelItem.
/// All items in the collection have their Source property set to
/// this property. The property�s metadata marks it non browsable
/// and non-serializable. The Item property is a �pseudo� property
/// because it is not actually set on the model. The value it points
/// to is the ModelItemCollection itself.
///
public static readonly DependencyProperty ItemProperty = DependencyProperty.RegisterAttachedReadOnly(
"Item",
typeof(IEnumerable),
typeof(ModelItemCollection), null).DependencyProperty;
#region IList Members
///
/// IList Implementation maps back to public API.
///
int IList.Add(object value) {
Add(value);
return Count - 1;
}
///
/// IList Implementation maps back to public API.
///
void IList.Clear() {
Clear();
}
///
/// IList Implementation maps back to public API.
///
bool IList.Contains(object value) {
return Contains(value);
}
///
/// IList Implementation maps back to public API.
///
int IList.IndexOf(object value) {
return IndexOf(ConvertType(value));
}
///
/// IList Implementation maps back to public API.
///
void IList.Insert(int index, object value) {
Insert(index, value);
}
///
/// IList Implementation maps back to public API.
///
bool IList.IsFixedSize {
get { return IsFixedSize; }
}
///
/// IList Implementation maps back to public API.
///
bool IList.IsReadOnly {
get { return IsReadOnly; }
}
///
/// IList Implementation maps back to public API.
///
void IList.Remove(object value) {
Remove(value);
}
///
/// IList Implementation maps back to public API.
///
void IList.RemoveAt(int index) {
RemoveAt(index);
}
///
/// IList Implementation maps back to public API.
///
object IList.this[int index] {
get { return this[index]; }
set { this[index] = ConvertType(value); }
}
#endregion
#region ICollection Members
///
/// ICollection Implementation maps back to public API.
///
void ICollection.CopyTo(Array array, int index) {
for (int idx = 0; idx < Count; idx++) {
array.SetValue(this[idx], idx + index);
}
}
///
/// ICollection Implementation maps back to public API.
///
int ICollection.Count {
get { return Count; }
}
///
/// ICollection Implementation maps back to public API.
///
bool ICollection.IsSynchronized {
get { return IsSynchronized; }
}
///
/// ICollection Implementation maps back to public API.
///
object ICollection.SyncRoot {
get { return SyncRoot; }
}
#endregion
#region IEnumerable Members
///
/// IEnumerable Implementation maps back to public API.
///
IEnumerator IEnumerable.GetEnumerator() {
foreach (object o in this) {
yield return o;
}
}
#endregion
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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