EditDropListClass Conceptual Example

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The following example shows a sequence of statements to declare, instantiate, initialize, use, and terminate an EditDropListClass object and a related BrowseClass object. The example page-loads a LIST of fieldnames and associated control attributes (such as color, icon, etc.), then edits the "ControlType" items with an EditDropListClass object. Note that the BrowseClass object calls the "registered" EditDropListClass object's methods as needed.

 

  PROGRAM

_ABCDllMode_  EQUATE(0)

_ABCLinkMode_ EQUATE(1)

INCLUDE('ABWINDOW.INC')       !declare WindowManager

INCLUDE('ABBROWSE.INC')       !declare BrowseClass

INCLUDE('ABEIP.INC')          !declare Edit-in-place classes

 

  MAP

  END

Property  FILE,DRIVER('TOPSPEED'),PRE(PR),CREATE,BINDABLE,THREAD

NameKey    KEY(PR:FieldName),NOCASE,OPT

Record     RECORD,PRE()

FieldName   STRING(30)

Color       STRING(20)

Hidden      STRING(1)

IconFile    STRING(30)

ControlType STRING(12)

          END

         END

PropView VIEW(Property)

        END

 

PropQ         QUEUE

PR:FieldName   LIKE(PR:FieldName)

PR:Color       LIKE(PR:Color)

PR:ControlType LIKE(PR:ControlType)    !edit this field with a DROPLIST control

PR:Hidden      LIKE(PR:Hidden)

PR:IconFile    LIKE(PR:IconFile)

ViewPosition   STRING(1024)

             END

 

PropWindow WINDOW('Browse Field Properties'),AT(,,318,137),IMM,SYSTEM,GRAY

      LIST,AT(8,4,303,113),USE(?PropList),IMM,HVSCROLL,FROM(PropQ),|

      FORMAT( '50L(2)|_M~Field Name~@s30@[70L(2)|_M~Color~@s20@' &|

          '60L(2)|_M~Control Type~@s12@' &|

          '20L(2)|_M~Hide~L(0)@s1@/130L(2)|_M~Icon File~@s30@]|M')

      BUTTON('&Insert'),AT(169,121),USE(?Insert)

      BUTTON('&Change'),AT(218,121),USE(?Change),DEFAULT

      BUTTON('&Delete'),AT(267,121),USE(?Delete)

     END

 

!declare Edit:PR:ControlType-EIP DROPLIST

Edit:PR:ControlType CLASS(EditDropListClass)

Init      PROCEDURE(UNSIGNED FieldNumber,UNSIGNED ListBox,*? UseVar),VIRTUAL

         END

 

ThisWindow CLASS(WindowManager)

Init         PROCEDURE(),BYTE,PROC,VIRTUAL

Kill         PROCEDURE(),BYTE,PROC,VIRTUAL

          END

 

BRW1      CLASS(BrowseClass)  !declare BRW1, the BrowseClass object

Q          &PropQ             ! that drives the EditClass objects--

         END                 ! i.e. calls Init, TakeEvent, Kill

 

GlobalErrors    ErrorClass

Access:Property CLASS(FileManager)

Init             PROCEDURE

               END

 

Relate:Property CLASS(RelationManager)

Init             PROCEDURE

Kill             PROCEDURE,VIRTUAL

               END

GlobalRequest   BYTE(0),THREAD

GlobalResponse  BYTE(0),THREAD

VCRRequest      LONG(0),THREAD

CODE

GlobalErrors.Init

Relate:Property.Init

GlobalResponse = ThisWindow.Run()

Relate:Property.Kill

GlobalErrors.Kill

 

ThisWindow.Init PROCEDURE()

ReturnValue     BYTE,AUTO

CODE

SELF.Request = GlobalRequest

ReturnValue = PARENT.Init()

SELF.FirstField = ?PropList

SELF.VCRRequest &= VCRRequest

SELF.Errors &= GlobalErrors

Relate:Property.Open

BRW1.Init(?PropList,PropQ.ViewPosition,PropView,PropQ,Relate:Property,SELF)

OPEN(PropWindow)

SELF.Opened=True

 BRW1.Q &= PropQ

 BRW1.AddSortOrder(,PR:NameKey)

 BRW1.AddField(PR:FieldName,BRW1.Q.PR:FieldName)

 BRW1.AddField(PR:Color,BRW1.Q.PR:Color)

 BRW1.AddField(PR:ControlType,BRW1.Q.PR:ControlType)

 BRW1.AddField(PR:Hidden,BRW1.Q.PR:Hidden)

 BRW1.AddField(PR:IconFile,BRW1.Q.PR:IconFile)

!Use Edit:PR:ControlType to edit BRW1 col 3

 BRW1.AddEditControl(Edit:PR:ControlType,3)

 BRW1.ArrowAction = EIPAction:Default+EIPAction:Remain+EIPAction:RetainColumn

 BRW1.InsertControl=?Insert

 BRW1.ChangeControl=?Change

 BRW1.DeleteControl=?Delete

 SELF.SetAlerts()

 RETURN ReturnValue

 

ThisWindow.Kill  PROCEDURE()

ReturnValue    BYTE,AUTO

 CODE

 ReturnValue = PARENT.Kill()

 Relate:Property.Close

 RETURN ReturnValue

 

Edit:PR:ControlType.Init PROCEDURE(UNSIGNED FieldNumber,UNSIGNED ListBox,*? UseVar)

CODE

PARENT.Init(FieldNumber,ListBox,UseVar)

SELF.Feq{PROP:From}='ENTRY|SPIN|TEXT|STRING'!set ControlType droplist choices

 

Access:Property.Init PROCEDURE         !initialize FileManager

CODE

PARENT.Init(Property,GlobalErrors)

SELF.FileNameValue = 'Property'

SELF.Buffer &= PR:Record

SELF.Create = 1

SELF.AddKey(PR:NameKey,'PR:NameKey',0)

 

Relate:Property.Init PROCEDURE         !initialize RelationManager

CODE

Access:Property.Init

PARENT.Init(Access:Property,1)

 

Relate:Property.Kill PROCEDURE         !shut down RelationManager

CODE

Access:Property.Kill

PARENT.Kill