VERSION 1.0 CLASS
BEGIN
  MultiUse = -1  'True
  Persistable = 0  'NotPersistable
  DataBindingBehavior = 0  'vbNone
  DataSourceBehavior  = 0  'vbNone
  MTSTransactionMode  = 0  'NotAnMTSObject
END
Attribute VB_Name = "clsMenu"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Option Explicit

'菜单类，这个类和其他的控件类有一些不同，因为要处理菜单嵌套等特殊情况

Private m_dicTotal As Dictionary                                                '保存全部的属性，包括默认值
Private m_Base As clsBaseControl                                                '基础控件类

Private m_Childs() As Object
Private m_numChilds As Long
Private m_IdxCurChild As Long
Private m_CanbeOutByMainForm As Boolean

'输出PYTHON代码,
'sCmdFunc: 输出参数，事件处理回调代码;
'rel:是否使用相对坐标,
'oop:是否使用面向对象编程
'usettk:是否使用TTK主题扩展
Public Sub toString(ByRef sOut As cStrBuilder, ByRef sCmd As cStrBuilder, rel As Boolean, oop As Boolean, usettk As Boolean)
    
    If oop Then
        toStringOOP sOut, sCmd, rel
    Else
        toStringStructure sOut, sCmd, rel
    End If
    
End Sub

'输出结构化代码
Private Sub toStringStructure(ByRef sOut As cStrBuilder, ByRef sCmd As cStrBuilder, rel As Boolean)
    
    Dim s() As String, i As Long, extra As String
    
    extra = IIf(Len(m_Base("tearoff")), ", tearoff=" & m_Base("tearoff"), "")
    
    sOut.Append Space(4) & m_Base.Name & " = Menu(" & m_Base.Parent & extra & ")"
    
    '逐个输出各顶级菜单，各顶级菜单下的子菜单由各顶级菜单负责生成对应的代码
    For i = 0 To m_numChilds - 1
        m_Childs(i).toString sOut, sCmd, rel, False, False
    Next
    
    sOut.Append Space(4) & m_Base.Parent & "['menu'] = " & m_Base.Name
    sOut.Append Space(4) & "gComps['" & m_Base.Name & "'] = " & m_Base.Name
    
End Sub

'输出面向对象代码
Private Sub toStringOOP(ByRef sOut As cStrBuilder, ByRef sCmd As cStrBuilder, rel As Boolean)
    
    Dim s() As String, i As Long, extra As String
    
    extra = IIf(Len(m_Base("tearoff")), ", tearoff=" & m_Base("tearoff"), "")
    
    sOut.Append Space(8) & "self." & m_Base.Name & " = Menu(self." & m_Base.Parent & extra & ")"
    
    '逐个输出各顶级菜单，各顶级菜单下的子菜单由各顶级菜单负责生成对应的代码
    For i = 0 To m_numChilds - 1
        m_Childs(i).toString sOut, sCmd, rel, True, False
    Next
    
    sOut.Append Space(8) & "self." & m_Base.Parent & "['menu'] = self." & m_Base.Name
    
End Sub

'创建对象后要马上调用这个函数初始化各参数
Public Sub InitConfig(Optional o As Object, Optional parentWidth As Long, Optional parentHeight As Long, Optional dMethods As Dictionary)
    
    m_Base("tearoff") = "0"
    
    '这些是所有的默认值
    m_dicTotal("tearoff") = "0"
    m_dicTotal("label") = ""
    m_dicTotal("fg") = ""
    m_dicTotal("bg") = ""
    m_dicTotal("bd") = ""
    m_dicTotal("relief") = ""
    m_dicTotal("state") = ""
    m_dicTotal("underline") = "-1"
    m_dicTotal("variable") = m_Base.Name & "Var"
    m_dicTotal("font") = ""
    
End Sub

'设置属性值的可能值列表
'返回值：0-没有可选值，1-有一个严格限制的可选值列表，2-除提供的可选值列表外，还可以手动输入其他值
'输出：sa()可选值列表数组
Public Function GetAttrValueList(sAttr As String, ByRef sa() As String) As Long
    If sAttr = "tearoff" Then
        GetAttrValueList = 1
        sa = Split("1,0", ",")
    Else
        GetAttrValueList = m_Base.GetAttrValueList(sAttr, sa)
    End If
End Function

Public Function Tips(sAttr As String) As String
    
    If sAttr = "tearoff" Then
        Tips = sAttr & vbCrLf & L("l_TipTearOff", "菜单是否可以变成单独窗口，设置为1（默认）时，菜单第一项为虚线，用户点击这条虚线会将菜单弹出为一个单独的窗口，就像PYTHON默认编辑器IDLE一样。")
    ElseIf sAttr = "postcommand" Then
        Tips = sAttr & vbCrLf & L("l_TipPostCmdMenu", "每次用户点击菜单弹出时调用的回调函数。")
    Else
        Tips = m_Base.Tips(sAttr)
    End If
    
End Function

Private Sub Class_Initialize()
    Set m_dicTotal = New Dictionary
    Set m_Base = New clsBaseControl
    m_Base.Name = "MainMenu"
    m_Base.ctlType = "Menu"
    m_Base.StyleName = ""
    Erase m_Childs
    m_numChilds = 0
    m_IdxCurChild = 0
    m_CanbeOutByMainForm = True
End Sub

'返回一个集合，每个项目三元对"属性名|值|是否默认选择"
'这个函数用于主界面填充属性参数列表框
Public Function Allitems() As Collection
    Dim re As Collection, k As Variant, ks As Collection
    
    Set re = New Collection
    
    '标准参数
    Set ks = m_dicTotal.Keys
    For Each k In ks
        If Len(m_Base(k)) Then
            re.Add k & "|" & m_Base(k) & "|1"
        Else
            re.Add k & "|" & m_dicTotal(k) & "|0"
        End If
    Next
    
    '用户增加的自定义参数（如果有的话）
    Set ks = m_Base.Keys
    For Each k In ks
        If Not m_dicTotal.Exists(k) Then
            re.Add k & "|" & m_Base(k) & "|1"
        End If
    Next
    
    Set Allitems = re
    
End Function

Public Sub SetConfig(sAttrs As String)
    m_Base.SetConfig sAttrs
End Sub

Public Sub SetSingleConfig(sAttr As String)
    m_Base.SetSingleConfig sAttr
End Sub

Private Sub Class_Terminate()
    Set m_dicTotal = Nothing
    Set m_Base = Nothing
    Erase m_Childs
End Sub

Public Property Let Parent(s As String)
    m_Base.Parent = s
End Property

Public Property Get Parent() As String
    Parent = m_Base.Parent
End Property

Public Property Get Name() As String
    Name = m_Base.Name
End Property

Public Property Let Name(s As String)
    m_Base.Name = s
End Property

'用于改变其默认对应的widget类型，修改widget类型后注意属性列表的合法性
Public Function SetWidgetType(sType As String, sStyleName As String)
    'm_Base.ctlType = sType
    'm_Base.StyleName = sStyleName
End Function

'确定主处理函数能否调用其toString()来产生代码，默认为True，设置为False说明由其他对象来调用处理
Public Property Get EnableOutByMainForm() As Boolean
    EnableOutByMainForm = m_CanbeOutByMainForm
End Property
Public Property Let EnableOutByMainForm(bEnable As Boolean)
    m_CanbeOutByMainForm = bEnable
End Property

'对象序列化函数
Public Sub Serializer(vSer As clsSerialization)
    vSer.Serializer m_Base
End Sub

Public Sub Deserializer(vSer As clsSerialization)
    vSer.Deserializer m_Base
End Sub

Public Property Get Description() As String
    Description = L("l_DescMenu", "主菜单对象，对应到Tkinter的Menu控件。")
End Property

Public Sub AddChild(o As Object)
    ReDim Preserve m_Childs(m_numChilds) As Object
    Set m_Childs(m_numChilds) = o
    m_numChilds = m_numChilds + 1
End Sub

Public Function GetNextChild(Optional nIdxChild As Long = -1) As Object
    
    m_IdxCurChild = IIf(nIdxChild >= 0, nIdxChild, m_IdxCurChild)
    If m_IdxCurChild < m_numChilds Then
        Set GetNextChild = m_Childs(m_IdxCurChild)
        m_IdxCurChild = m_IdxCurChild + 1
    Else
        Set GetNextChild = Nothing
        m_IdxCurChild = 0
    End If
End Function

Public Property Get ChildCount() As Long
    ChildCount = m_numChilds
End Property

Public Property Let ScaleMode(nV As Long)
    m_Base.ScaleMode = nV
End Property

'用于模拟比较排序的函数，实际上是判断两个对象的依赖关系
'用本对象和另一个对象比较，逻辑结果为'本对象-另一个对象'
'返回值含义：
'<0：表示本对象需要在另一个对象前输出代码
'=0：表示两者将没有依赖关系，代码前后顺序无影响
'>0：另一个对象要先输出代码。
'整体的逻辑结果类似是重的沉底
Public Function Compare(ByRef Obj As Object) As Long
    If Parent = Obj.Name Then '父控件先输出代码
        Compare = 1
    ElseIf Obj.Parent = Name Then
        Compare = -1
    ElseIf Parent = WTOP And Obj.Parent <> WTOP Then '顶层控件先输出
        Compare = -1
    ElseIf Parent <> WTOP And Obj.Parent = WTOP Then
        Compare = 1
    Else
        Compare = 0
    End If
End Function