| using System; |
| using System.ComponentModel; |
| using FarsiLibrary.Win.Helpers; |
|
|
| namespace FarsiLibrary.Win |
| { |
| public class FATabStripItemCollection : CollectionWithEvents |
| { |
| #region Fields |
|
|
| [Browsable(false)] |
| public event CollectionChangeEventHandler CollectionChanged; |
|
|
| private int lockUpdate; |
|
|
| #endregion |
|
|
| #region Ctor |
|
|
| public FATabStripItemCollection() |
| { |
| lockUpdate = 0; |
| } |
|
|
| #endregion |
|
|
| #region Props |
|
|
| public FATabStripItem this[int index] |
| { |
| get |
| { |
| if (index < 0 || List.Count - 1 < index) |
| return null; |
|
|
| return (FATabStripItem)List[index]; |
| } |
| set |
| { |
| List[index] = value; |
| } |
| } |
|
|
| [Browsable(false)] |
| public virtual int DrawnCount |
| { |
| get |
| { |
| int count = Count, res = 0; |
| if (count == 0) return 0; |
| for (int n = 0; n < count; n++) |
| { |
| if (this[n].IsDrawn) |
| res++; |
| } |
| return res; |
| } |
| } |
|
|
| public virtual FATabStripItem LastVisible |
| { |
| get |
| { |
| for (int n = Count - 1; n > 0; n--) |
| { |
| if (this[n].Visible) |
| return this[n]; |
| } |
|
|
| return null; |
| } |
| } |
|
|
| public virtual FATabStripItem FirstVisible |
| { |
| get |
| { |
| for (int n = 0; n < Count; n++) |
| { |
| if (this[n].Visible) |
| return this[n]; |
| } |
|
|
| return null; |
| } |
| } |
|
|
| [Browsable(false)] |
| public virtual int VisibleCount |
| { |
| get |
| { |
| int count = Count, res = 0; |
| if (count == 0) return 0; |
| for (int n = 0; n < count; n++) |
| { |
| if (this[n].Visible) |
| res++; |
| } |
| return res; |
| } |
| } |
|
|
| #endregion |
|
|
| #region Methods |
|
|
| protected virtual void OnCollectionChanged(CollectionChangeEventArgs e) |
| { |
| if (CollectionChanged != null) |
| CollectionChanged(this, e); |
| } |
|
|
| protected virtual void BeginUpdate() |
| { |
| lockUpdate++; |
| } |
|
|
| protected virtual void EndUpdate() |
| { |
| if (--lockUpdate == 0) |
| OnCollectionChanged(new CollectionChangeEventArgs(CollectionChangeAction.Refresh, null)); |
| } |
|
|
| public virtual void AddRange(FATabStripItem[] items) |
| { |
| BeginUpdate(); |
| try |
| { |
| foreach (FATabStripItem item in items) |
| { |
| List.Add(item); |
| } |
| } |
| finally |
| { |
| EndUpdate(); |
| } |
| } |
|
|
| public virtual void Assign(FATabStripItemCollection collection) |
| { |
| BeginUpdate(); |
| try |
| { |
| Clear(); |
| for (int n = 0; n < collection.Count; n++) |
| { |
| FATabStripItem item = collection[n]; |
| FATabStripItem newItem = new FATabStripItem(); |
| newItem.Assign(item); |
| Add(newItem); |
| } |
| } |
| finally |
| { |
| EndUpdate(); |
| } |
| } |
|
|
| public virtual int Add(FATabStripItem item) |
| { |
| int res = IndexOf(item); |
| if (res == -1) res = List.Add(item); |
| return res; |
| } |
|
|
| public virtual void Remove(FATabStripItem item) |
| { |
| if (List.Contains(item)) |
| List.Remove(item); |
| } |
|
|
| public virtual FATabStripItem MoveTo(int newIndex, FATabStripItem item) |
| { |
| int currentIndex = List.IndexOf(item); |
| if (currentIndex >= 0) |
| { |
| RemoveAt(currentIndex); |
| Insert(0, item); |
|
|
| return item; |
| } |
|
|
| return null; |
| } |
|
|
| public virtual int IndexOf(FATabStripItem item) |
| { |
| return List.IndexOf(item); |
| } |
|
|
| public virtual bool Contains(FATabStripItem item) |
| { |
| return List.Contains(item); |
| } |
|
|
| public virtual void Insert(int index, FATabStripItem item) |
| { |
| if (Contains(item)) return; |
| List.Insert(index, item); |
| } |
|
|
| protected override void OnInsertComplete(int index, object item) |
| { |
| FATabStripItem itm = item as FATabStripItem; |
| itm.Changed += new EventHandler(OnItem_Changed); |
| OnCollectionChanged(new CollectionChangeEventArgs(CollectionChangeAction.Add, item)); |
| } |
|
|
| protected override void OnRemove(int index, object item) |
| { |
| base.OnRemove(index, item); |
| FATabStripItem itm = item as FATabStripItem; |
| itm.Changed -= new EventHandler(OnItem_Changed); |
| OnCollectionChanged(new CollectionChangeEventArgs(CollectionChangeAction.Remove, item)); |
| } |
|
|
| protected override void OnClear() |
| { |
| if (Count == 0) return; |
| BeginUpdate(); |
| try |
| { |
| for (int n = Count - 1; n >= 0; n--) |
| { |
| RemoveAt(n); |
| } |
| } |
| finally |
| { |
| EndUpdate(); |
| } |
| } |
|
|
| protected virtual void OnItem_Changed(object sender, EventArgs e) |
| { |
| OnCollectionChanged(new CollectionChangeEventArgs(CollectionChangeAction.Refresh, sender)); |
| } |
|
|
| #endregion |
| } |
| } |
|
|
