Instance

Gets a Singleton instance of derived class

OutputVar := MfSingletonBase.Instance

Value

instance of Derived Class

Gets

Gets a Singleton instance of derived class

Throws

Throws MfNotSupportedException if attempt to set value.

Remarks

Read-only Property.
Instance Property always returns the same instance of the derived class class.

Example

MsgBox % SingletonHello.Instance.Message
SingletonHello.Instance.Value := "Way too cool!"
MsgBox % SingletonHello.Instance.Message

ExitApp

class SingletonHello extends MfSingletonBase
{
   static _instance := Null ; Static var to contain the singleton instance
   m_Value  := Null
   __New() {
       base.__New()
       this.m_Value  := "Hello World"
   }

   ; GetInstance() is required to be overridden from the SingletonBase base class
   GetInstance() { ; Overrides base
   if (MfNull.IsNull(SingletonHello._instance)) {
       SingletonHello._instance := new SingletonHello()
   }
   return SingletonHello._instance
   }

   ; DestroyInstance() is required to be overridden from the SingletonBase base class
   DestroyInstance() {
       SingletonHello._instance := Null ; Clears current instance and releases memory
   }

   ; Properties Start
   Value[]
   {
       get {
           return this.m_Value
       }
       set {
                         this.m_Value := value
           return this.m_Value
       }
   }

   Message[]
   {
       get {
           return MfString.Format("The Value is currently:'{0}'", this.Value)
       }
       set { ; Read-only Property
           ex := new MfNotSupportedException(MfEnvironment.Instance.GetResourceString("NotSupportedException_readonly_Property"))
           ex.SetProp(A_LineFile, A_LineNumber, A_ThisFunc)
           throw ex
       }
   }
   ; Properties End
}