1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
// ItemCollection.cs
//
// Author:
// Lluis Sanchez Gual <lluis@novell.com>
//
// Copyright (c) 2008 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
//
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Collections.Immutable;
using MonoDevelop.Core;
using System.Linq;
namespace MonoDevelop.Projects
{
public class ItemCollection<T>: IEnumerable<T>
{
ImmutableList<T> list = ImmutableList<T>.Empty;
bool controlWrites;
protected ImmutableList<T> List {
get {
return this.list;
}
set {
list = value;
}
}
internal void SetShared ()
{
controlWrites = true;
}
protected void AssertCanWrite ()
{
if (controlWrites)
Runtime.AssertMainThread ();
}
public void Add (T item)
{
AssertCanWrite ();
list = list.Add (item);
OnItemsAdded (new [] { item });
}
public void AddRange (IEnumerable<T> items)
{
AssertCanWrite ();
list = list.AddRange (items);
OnItemsAdded (items);
}
public void SetItems (IEnumerable<T> items)
{
AssertCanWrite ();
items = ReuseExistingItems (items);
var newItems = items.Except (list);
var removedItems = list.Except (items);
list = ImmutableList<T>.Empty.AddRange (items);
if (newItems.Any ())
OnItemsAdded (newItems);
if (removedItems.Any ())
OnItemsRemoved (removedItems);
}
internal void SetItems (IEnumerable<T> items, IEnumerable<T> newItems, IEnumerable<T> removedItems)
{
AssertCanWrite ();
list = ImmutableList<T>.Empty.AddRange (items);
// Remove items first before adding in case there are common filenames to prevent
// items being removed from the ProjectFileCollection's files lookup list.
if (removedItems.Any ())
OnItemsRemoved (removedItems);
if (newItems.Any ())
OnItemsAdded (newItems);
}
IEnumerable<T> ReuseExistingItems (IEnumerable<T> items)
{
var updatedItems = new List<T> ();
foreach (var item in items) {
int index = list.IndexOf (item);
if (index == -1)
updatedItems.Add (item);
else
updatedItems.Add (list [index]);
}
return updatedItems;
}
public void Insert (int index, T item)
{
list = list.Insert (index, item);
OnItemsAdded (new [] { item });
}
public void RemoveRange (IEnumerable<T> items)
{
AssertCanWrite ();
list = list.RemoveRange (items);
OnItemsRemoved (items);
}
public bool Remove (T item)
{
AssertCanWrite ();
int i = list.IndexOf (item);
if (i != -1) {
RemoveAt (i);
return true;
}
return false;
}
public void RemoveAt (int index)
{
AssertCanWrite ();
T it = list [index];
list = list.RemoveAt (index);
OnItemsRemoved (new [] { it });
}
public int IndexOf (T item)
{
return list.IndexOf (item);
}
public bool Contains (T item)
{
return list.Contains (item);
}
public T this [int index] {
get {
return list [index];
}
set {
AssertCanWrite ();
T it = list [index];
list = list.SetItem (index, value);
OnItemsRemoved (new [] { it });
OnItemsAdded (new [] { value });
}
}
public void Clear ()
{
AssertCanWrite ();
var oldList = list;
list = list.Clear ();
OnItemsRemoved (oldList);
}
public int Count {
get { return list.Count; }
}
protected virtual void OnItemsAdded (IEnumerable<T> items)
{
}
protected virtual void OnItemsRemoved (IEnumerable<T> items)
{
}
public ImmutableList<T>.Enumerator GetEnumerator ()
{
return list.GetEnumerator ();
}
#region IEnumerable implementation
IEnumerator<T> IEnumerable<T>.GetEnumerator ()
{
return list.GetEnumerator ();
}
#endregion
#region IEnumerable implementation
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator ()
{
return ((System.Collections.IEnumerable)list).GetEnumerator ();
}
#endregion
}
}
|