113 lines
4.0 KiB
VB.net
113 lines
4.0 KiB
VB.net
#Region "Microsoft.VisualBasic::7ab223735703b82490dff90f809efe73, Microsoft.VisualBasic.Core\Language\Language\JavaScript\JavaScriptObject.vb"
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' Author:
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'
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' asuka (amethyst.asuka@gcmodeller.org)
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' xie (genetics@smrucc.org)
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' xieguigang (xie.guigang@live.com)
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'
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' Copyright (c) 2018 GPL3 Licensed
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'
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'
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' GNU GENERAL PUBLIC LICENSE (GPL3)
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'
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'
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' This program is free software: you can redistribute it and/or modify
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' it under the terms of the GNU General Public License as published by
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' the Free Software Foundation, either version 3 of the License, or
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' (at your option) any later version.
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'
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' This program is distributed in the hope that it will be useful,
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' but WITHOUT ANY WARRANTY; without even the implied warranty of
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' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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' GNU General Public License for more details.
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'
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' You should have received a copy of the GNU General Public License
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' along with this program. If not, see <http://www.gnu.org/licenses/>.
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' /********************************************************************************/
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' Summaries:
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' Interface IJavaScriptObjectAccessor
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'
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' Properties: Accessor
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'
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' Class JavaScriptObject
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'
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' Constructor: (+1 Overloads) Sub New
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' Function: GetEnumerator, IEnumerable_GetEnumerator
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'
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'
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' /********************************************************************************/
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#End Region
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Imports System.Reflection
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Imports Microsoft.VisualBasic.ComponentModel.DataSourceModel
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Imports Microsoft.VisualBasic.ComponentModel.DataSourceModel.SchemaMaps
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Namespace My.JavaScript
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Public Interface IJavaScriptObjectAccessor
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Default Property Accessor(name As String) As Object
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End Interface
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Public Class JavaScriptObject : Implements IEnumerable(Of String), IJavaScriptObjectAccessor
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Dim members As New Dictionary(Of String, BindProperty(Of DataFrameColumnAttribute))
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''' <summary>
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''' 只针对Public的属性或者字段有效
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''' </summary>
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''' <param name="memberName"></param>
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''' <returns></returns>
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Default Public Property Accessor(memberName As String) As Object Implements IJavaScriptObjectAccessor.Accessor
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Get
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If members.ContainsKey(memberName) Then
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Return members(memberName).GetValue(Me)
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Else
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' Returns undefined in javascript
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Return Nothing
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End If
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End Get
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Set(value As Object)
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If members.ContainsKey(memberName) Then
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members(memberName).SetValue(Me, value)
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Else
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' 添加一个新的member？
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Throw New NotImplementedException
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End If
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End Set
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End Property
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''' <summary>
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''' 如果存在无参数的函数，则也会被归类为只读属性？
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''' </summary>
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Sub New()
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Dim type As Type = MyClass.GetType
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Dim properties As PropertyInfo() = type.GetProperties(PublicProperty).ToArray
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Dim fields As FieldInfo() = type.GetFields(PublicProperty).ToArray
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For Each prop As PropertyInfo In properties
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members(prop.Name) = New BindProperty(Of DataFrameColumnAttribute)(prop)
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Next
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For Each field As FieldInfo In fields
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members(field.Name) = New BindProperty(Of DataFrameColumnAttribute)(field)
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Next
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End Sub
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Public Iterator Function GetEnumerator() As IEnumerator(Of String) Implements IEnumerable(Of String).GetEnumerator
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For Each key As String In members.Keys
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Yield key
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Next
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End Function
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Private Iterator Function IEnumerable_GetEnumerator() As IEnumerator Implements IEnumerable.GetEnumerator
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Yield GetEnumerator()
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End Function
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End Class
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End Namespace
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