[NUI] Support factory method in EXaml
[platform/core/csapi/tizenfx.git] / src / Tizen.NUI / src / internal / EXaml / Operation / GatherMethod.cs
1 /*
2  * Copyright(c) 2021 Samsung Electronics Co., Ltd.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  *
16  */
17 using System;
18 using System.Collections.Generic;
19 using System.Linq;
20 using System.Reflection;
21 using System.Text;
22 using Tizen.NUI.BaseComponents;
23 using Tizen.NUI.Binding;
24 using Tizen.NUI.Binding.Internals;
25
26 namespace Tizen.NUI.EXaml
27 {
28     internal class GatherMethod : Operation
29     {
30         public GatherMethod(GlobalDataList globalDataList, int typeIndex, string methodName, List<object> paramList)
31         {
32             this.typeIndex = typeIndex;
33             this.methodName = methodName;
34             this.globalDataList = globalDataList;
35             this.paramList = paramList;
36         }
37
38         private GlobalDataList globalDataList;
39
40         public void Do()
41         {
42             List<Type> paramTypeList = new List<Type>();
43
44             foreach (var obj in paramList)
45             {
46                 int index = (int)obj;
47
48                 if (null == paramTypeList)
49                 {
50                     paramTypeList = new List<Type>();
51                 }
52
53                 if (index >= 0)
54                 {
55                     paramTypeList.Add(globalDataList.GatheredTypes[index]);
56                 }
57                 else
58                 {
59                     paramTypeList.Add(GetBaseType.GetBaseTypeByIndex(index));
60                 }
61             }
62
63             Func<MethodInfo, bool> isMatch = m =>
64             {
65                 if (m.Name != methodName)
66                     return false;
67                 var p = m.GetParameters();
68                 if (p.Length != paramTypeList.Count)
69                     return false;
70                 for (var i = 0; i < p.Length; i++)
71                 {
72                     if (p[i].ParameterType != paramTypeList[i])
73                     {
74                         return false;
75                     }
76                 }
77                 return true;
78             };
79
80             var type = globalDataList.GatheredTypes[typeIndex];
81             var method = type.GetRuntimeMethods().FirstOrDefault(isMatch);
82             globalDataList.GatheredMethods.Add(method);
83         }
84
85         private int typeIndex;
86         private string methodName;
87         private List<object> paramList;
88     }
89 }