private void RaiseReplaced(TKey key, TValue oldValue, TValue newValue, int index)
{
ValidationHelper.NotNull(key, "key");
RaiseItemChanged();
var oldItem = new ObservableKeyValuePair <TKey, TValue>(key, oldValue);
var newItem = new ObservableKeyValuePair <TKey, TValue>(key, newValue);
newItem.PropertyChanging += RaiseItemChanging;
OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Replace, newItem, oldItem, index));
}
bool ICollection <ObservableKeyValuePair <TKey, TValue> > .Contains(ObservableKeyValuePair <TKey, TValue> item)
{
ValidationHelper.NotNull(item, "item");
ValidationHelper.NotNull(item.Key, "item");
Contract.Ensures(!Contract.Result <bool>() || ((ICollection <ObservableKeyValuePair <TKey, TValue> >) this).Count > 0);
var result = ContainsKey(item.Key) && ContainsValue(item.Value);
// NOTE: Lack of contracts
Contract.Assume(!result || ((ICollection <ObservableKeyValuePair <TKey, TValue> >) this).Count > 0);
return(result);
}
public void Clear()
{
Contract.Ensures(Count == 0);
CheckReentrancy();
var items = new ObservableKeyValuePair <TKey, TValue> [Count];
((ICollection <ObservableKeyValuePair <TKey, TValue> >) this).CopyTo(items, 0);
_cache.Clear();
RaiseCleared(items);
Contract.Assume(Count == 0);
}
void ICollection <ObservableKeyValuePair <TKey, TValue> > .Add(ObservableKeyValuePair <TKey, TValue> item)
{
ValidationHelper.NotNull(item, "item");
ValidationHelper.NotNull(item.Key, "item");
Contract.Ensures(((ICollection <ObservableKeyValuePair <TKey, TValue> >) this).Count ==
Contract.OldValue(((ICollection <ObservableKeyValuePair <TKey, TValue> >) this).Count) + 1);
var @this = (ICollection <ObservableKeyValuePair <TKey, TValue> >) this;
var oldCount = @this.Count;
CheckReentrancy();
Add(item.Key, item.Value);
RaiseAdded(item, IndexOf(item.Key));
// NOTE: Lack of contracts
Contract.Assume(@this.Count == oldCount + 1);
}
bool ICollection <ObservableKeyValuePair <TKey, TValue> > .Remove(ObservableKeyValuePair <TKey, TValue> item)
{
ValidationHelper.NotNull(item, "item");
ValidationHelper.NotNull(item.Key, "item");
Contract.Ensures(!Contract.Result <bool>() ||
((ICollection <ObservableKeyValuePair <TKey, TValue> >) this).Count ==
Contract.OldValue(((ICollection <ObservableKeyValuePair <TKey, TValue> >) this).Count) - 1);
var @this = (ICollection <ObservableKeyValuePair <TKey, TValue> >) this;
var oldCount = @this.Count;
CheckReentrancy();
var result = @this.Contains(item) && Remove(item.Key);
RaiseRemoved(item, IndexOf(item.Key));
// NOTE: Lack of contracts
Contract.Assume(!result || @this.Count == oldCount - 1);
return(result);
}
private bool Equals(ObservableKeyValuePair <TKey, TValue> other)
{
return(_comparer.Equals(_key, other._key) && EqualityComparer <TValue> .Default.Equals(_value, other._value));
}
private void RaiseRemoved(ObservableKeyValuePair <TKey, TValue> item, int index)
{
RaiseCollectionChanged();
OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, item, index));
}
private void RaiseAdded(ObservableKeyValuePair <TKey, TValue> item, int index)
{
RaiseCollectionChanged();
item.PropertyChanging += RaiseItemChanging;
OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, item, index));
}
