PWCT 1.9 Art Documentation ( http://doublesvsoop.sourceforge.net )

2006-2013, Mahmoud Fayed ( msfclipper@users.sourceforge.net )

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Table of contents

1 - Introduction

2 - Implementation steps

3 - Final Steps Tree

4 - Application during the runtime

1 - Introduction

In this lesson we are going to learn how to use the (Master Details Child Class) template - part (2) .

In this part of our lesson we are going to add a combobox

So we can select a customer name when we add new orders.

2 - Implementation Steps

Open MasterDetailsTest.SSF

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Open method UserInterface2Class

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Open method Class2Ado

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Open method Ado2Class

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Open method Class2UserInterface

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Open method ClearRecord

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Open method SetMode

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3 - Final Steps Tree

============================

MasterDetailsTest.SSF

============================

Set Class Name & Window Name

                PWCT-Code Generator: Replace String (MyClassName) with (OrdersClass)

                PWCT-Code Generator: Replace String (MyWindowName) with (&(self:cWindowName))

Classes

                Define Class MyClassName From SystemDatabase

                                Declare Class Data

                                                Data cWindowName Init Value "OrdersWindow"

                                ************************** Record Data Here **************************

                                                Data TableName Init Value "Orders_All"

                                                Data nID Init Value 0

                                                Data column Init Value "OrderNumber"

                                                Data PrimaryKey Init Value "id"

                                                Data columns Init Value {"OrderNumber","CustName"}

                                                Item

                                                                Data nItem Init Value 0

                                                                Data itemitems Init Value {}

                                                                Data itemitemsids Init Value {}

                                                Data nOrderNumber Init Value ""

                                                detailstable

                                                                Data TableName2 Init Value "OrderItems_All"

                                                                Data column2 Init Value "ItemName"

                                                                Data PrimaryKey2 Init Value "id"

                                                                Data columns2 Init Value {"ItemName"}

                                                                Data ResultPrimaryKeys2 Init Value {}

                                                Join Table

                                                                Data TableName3 Init Value "OrderItems"

                                                                Data PrimaryKey3 Init Value "id"

                                                                Data linkmasterkey Init Value "OrderNumber"

                                                                Data linkchildkey Init Value "ItemNumber"

                                                Counter Table

                                                                Data TableName4 Init Value "SystemCounter"

                                                                Data CounterColumn Init Value "OrderNumber"

                                                Items Table

                                                                Data itemstable Init Value "items"

                                                                Data Itemscolumn Init Value "itemname"

                                                Customers

                                                                Data nCustomer Init Value 0

                                                                Data CustomerItems Init Value {}

                                                                Data CustomerItemsIDs Init Value {}

                                Declare Class Methods

                                                Method showwindow

                                                Method closewindow

                                                Method SetMode

                                                Method UserInterface2Class

                                                Method Class2ADO

                                                Method ADO2Class

                                                Method Class2UserInterface

                                                Method ClearRecord

                                                Method AutoGotoRecord

                                                Method OpenDataWindow

                                                Method showdatawindow

                                                Method myTimer

                                                Method itemchange

                                                Method OnAfterAddEdit

                                                Method OnBeforeDelete

                                                Method onbeforeedit

                                                Method onAddClick

                                                Method search2

                                                Method delrecord2

                                                Method addrecord2

                                                Method BeforeSearch

                                                Method SearchAdd

                                                Method settimer

                                                Method GetSearchValue

                                End of Class

                                ******************************* Methods to Customize *****************************

                                                Define Method showwindow Class MyClassName

                                                                Start Here

                                                                                myout = self.connect()

                                                                                myout = self.AutoGotoRecord()

                                                                                Define New Window ( MyWindowName ) , Title : "Enter Orders"

                                                                                                Window Events

                                                                                                                Event: ON INIT : Action self:Search()

                                                                                                Window Properties

                                                                                                Window Controls

                                                                                                                Define New Image ( image1 ) , Image : "Image\back.jpg"

                                                                                                                                Events

                                                                                                                                Properties

                                                                                                                Data Buttons

                                                                                                                                Define New Button ( btnFirst ) , Caption : "First"

                                                                                                                                                Button Events

                                                                                                                                                                Event: ON CLICK : Action self:firstrecord()

                                                                                                                                                Button Properties

                                                                                                                                Define New Button ( btnNext ) , Caption : "Next"

                                                                                                                                                Button Events

                                                                                                                                                                Event: ON CLICK : Action self:nextrecord()

                                                                                                                                                Button Properties

                                                                                                                                Define New Button ( btnLast ) , Caption : "Last"

                                                                                                                                                Button Events

                                                                                                                                                                Event: ON CLICK : Action self:lastrecord()

                                                                                                                                                Button Properties

                                                                                                                                Define New Button ( btnClose ) , Caption : "Close"

                                                                                                                                                Button Events

                                                                                                                                                                Event: ON CLICK : Action self:closewindow()

                                                                                                                                                Button Properties

                                                                                                                                Define New Button ( btnPrev ) , Caption : "Prev "

                                                                                                                                                Button Events

                                                                                                                                                                Event: ON CLICK : Action self:prevrecord()

                                                                                                                                                Button Properties

                                                                                                                                Define New Button ( btnDel ) , Caption : "Delete"

                                                                                                                                                Button Events

                                                                                                                                                                Event: ON CLICK : Action self:delrecord()

                                                                                                                                                Button Properties

                                                                                                                                Define New Button ( btnsave ) , Caption : "Save"

                                                                                                                                                Button Events

                                                                                                                                                                Event: ON CLICK : Action self:saverecord()

                                                                                                                                                Button Properties

                                                                                                                                Define New Button ( btncancel ) , Caption : "Cancel"

                                                                                                                                                Button Events

                                                                                                                                                                Event: ON CLICK : Action self:cancelrecord()

                                                                                                                                                Button Properties

                                                                                                                                Define New Button ( btnedit ) , Caption : "Edit"

                                                                                                                                                Button Events

                                                                                                                                                                Event: ON CLICK : Action self:editrecord()

                                                                                                                                                Button Properties

                                                                                                                                Define New Button ( btnadd ) , Caption : "Add"

                                                                                                                                                Button Events

                                                                                                                                                                Event: ON CLICK : Action self:addrecord()

                                                                                                                                                Button Properties

                                                                                                                Window Title

                                                                                                                                Define Label ( lblTitle ) , Caption :                                                                                                                          Master/Details"

                                                                                                                                                Label Events

                                                                                                                                                Label Properties

                                                                                                                Browse

                                                                                                                                Define Label ( lbl1browse ) , Caption : "Order Number"

                                                                                                                                                Label Events

                                                                                                                                                Label Properties

                                                                                                                                Define TextBox ( textnamebrowse )

                                                                                                                                                TextBox EVENTS

                                                                                                                                                TextBox Properties

                                                                                                                                Define New Button ( btn1browse ) , Caption : "Search"

                                                                                                                                                Button Events

                                                                                                                                                                Event: ON CLICK : Action self:search()

                                                                                                                                                Button Properties

                                                                                                                                Define New Grid ( Grid1browse ) , HEADERS : {"Order Number","Customer Name"}

                                                                                                                                                Events

                                                                                                                                                                Event: ON CHANGE : Action self:OpenDataWindow

                                                                                                                                                Properties

                                                                                                                Define Timer ( Timer1 )

                                                                                                                Item

                                                                                                                                items

                                                                                                                                                myout = self.LoadLookupTable(self:itemstable,self:itemscolumn,@self:ItemItems,"id",@self:ItemItemsIDS)

                                                                                                                                Define Label ( lblitems ) , Caption : "Item"

                                                                                                                                                Label Events

                                                                                                                                                Label Properties

                                                                                                                                Define Combobox ( comboitem ) , Items : self:itemitems

                                                                                                                                                Combobox Events

                                                                                                                                                                Event: ON CHANGE : Action self:itemchange()

                                                                                                                                                Combobox Properties

                                                                                                                Order Number

                                                                                                                                Define Label ( lblOrdernumber ) , Caption : "Order Number"

                                                                                                                                                Label Events

                                                                                                                                                Label Properties

                                                                                                                                Define TextBox ( textOrderNumber )

                                                                                                                                                TextBox EVENTS

                                                                                                                                                TextBox Properties

                                                                                                                Browse Order Items

                                                                                                                                Define Label ( lbl1browse2 ) , Caption : "Item Name"

                                                                                                                                                Label Events

                                                                                                                                                Label Properties

                                                                                                                                Define TextBox ( textNamebrowse2 )

                                                                                                                                                TextBox EVENTS

                                                                                                                                                TextBox Properties

                                                                                                                                Define New Button ( btn1browse2 ) , Caption : "Search"

                                                                                                                                                Button Events

                                                                                                                                                                Event: ON CLICK : Action self:search2()

                                                                                                                                                Button Properties

                                                                                                                                Define New Grid ( Grid1browse2 ) , HEADERS : {"Item Name"}

                                                                                                                                                Events

                                                                                                                                                Properties

                                                                                                                Data Buttons 2

                                                                                                                                Define New Button ( btnDel2 ) , Caption : "Delete Item"

                                                                                                                                                Button Events

                                                                                                                                                                Event: ON CLICK : Action self:delrecord2()

                                                                                                                                                Button Properties

                                                                                                                                Define New Button ( btnadd2 ) , Caption : "Add Item"

                                                                                                                                                Button Events

                                                                                                                                                                Event: ON CLICK : Action self:addrecord2()

                                                                                                                                                Button Properties

                                                                                                                Customers

                                                                                                                                myout = self.LoadLookupTable("Customers","CustName",@self:CustomerItems,"ID",@self:CustomerItemsIDs)

                                                                                                                                Define Label ( lbl13 ) , Caption : "Customer"

                                                                                                                                                Label Events

                                                                                                                                                Label Properties

                                                                                                                                Define Combobox ( comboCustomer ) , Items : self:CustomerItems

                                                                                                                                                Combobox Events

                                                                                                                                                Combobox Properties

                                                                                                End Of Window

                                                                                                MyWindowName.Center ( )

                                                                                                myout = self.showrecord()

                                                                                                myout = self.setmode(2)

                                                                                                MyWindowName.Timer1.Enabled := false

                                                                                                MyWindowName.textOrderNumber.Enabled := false

                                                                                                Activate window

                                                                End of Method (Return 0)

                                                Define Method UserInterface2Class Class MyClassName

                                                                Start Here

                                                                                Customers

                                                                                                self:nCustomer = MyWindowName.comboCustomer.Value

                                                                                                self.nCustomer = self:CustomerItemsIDs[self:nCustomer]

                                                                End of Method (Return 0)

                                                Define Method Class2ADO Class MyClassName

                                                                Start Here

                                                                                ADODB RecordSet (self:oRS) Set Field (self:linkmasterkey) Value To (self:nOrderNumber)

                                                                                ADODB RecordSet (self:oRS) Set Field ("CustomerID") Value To (self:nCustomer)

                                                                End of Method (Return 0)

                                                Define Method ADO2Class Class MyClassName

                                                                Start Here

                                                                                self:nOrderNumber = ADODB RecordSet (self:oRS) Get Field (self:linkmasterkey) Value

                                                                                self:nCustomer = ADODB RecordSet (self:oRS) Get Field ("CustomerID") Value

                                                                End of Method (Return 0)

                                                Define Method Class2UserInterface Class MyClassName

                                                                Start Here

                                                                                MyWindowName.textOrderNumber.Value := alltrim(str(self:nOrderNumber))

                                                                                myout = self.search2()

                                                                                Customer

                                                                                                self:nCustomer = self.LookupIDtoIndex(self:nCustomer,@self:customeritemsIDs)

                                                                                                MyWindowName.ComboCustomer.Value := self:nCustomer

                                                                End of Method (Return 0)

                                                Define Method ClearRecord Class MyClassName

                                                                Start Here

                                                                                IF ( self:addrec = false )

                                                                                                Start Here

                                                                                                                self:nOrderNumber = 0

                                                                                                END OF IF STATEMENT

                                                                                self.nCustomer = 0

                                                                End of Method (Return 0)

                                                Define Method setmode(p1) Class MyClassName

                                                                Start Here

                                                                                IF ( p1 = 1 )

                                                                                                Start Here

                                                                                                                MyWindowName.btnfirst.Enabled := false

                                                                                                                MyWindowName.btnnext.Enabled := false

                                                                                                                MyWindowName.btnprev.Enabled := false

                                                                                                                MyWindowName.btnlast.Enabled := false

                                                                                                                MyWindowName.btndel.Enabled := false

                                                                                                                MyWindowName.btnclose.Enabled := false

                                                                                                                MyWindowName.btnsave.Enabled := true

                                                                                                                MyWindowName.btncancel.Enabled := true

                                                                                                                MyWindowName.btnedit.Enabled := false

                                                                                                                MyWindowName.btnadd.Enabled := false

                                                                                                                MyWindowName.btnadd2.Enabled := false

                                                                                                                MyWindowName.btndel2.Enabled := false

                                                                                                                Search Controls

                                                                                                                                MyWindowName.textNameBrowse.Enabled := false

                                                                                                                                MyWindowName.btn1Browse.Enabled := false

                                                                                                                                MyWindowName.Grid1Browse.Enabled := false

                                                                                                                MyWindowName.ComboCustomer.Enabled := True

                                                                                                END OF IF STATEMENT

                                                                                IF ( p1 = 2 )

                                                                                                Start Here

                                                                                                                MyWindowName.btnfirst.Enabled := true

                                                                                                                MyWindowName.btnnext.Enabled := true

                                                                                                                MyWindowName.btnprev.Enabled := true

                                                                                                                MyWindowName.btnlast.Enabled := true

                                                                                                                MyWindowName.btndel.Enabled := true

                                                                                                                MyWindowName.btnclose.Enabled := true

                                                                                                                MyWindowName.btnsave.Enabled := false

                                                                                                                MyWindowName.btncancel.Enabled := false

                                                                                                                MyWindowName.btnedit.Enabled := true

                                                                                                                MyWindowName.btnadd.Enabled := true

                                                                                                                MyWindowName.btnadd2.Enabled := true

                                                                                                                MyWindowName.btndel2.Enabled := true

                                                                                                                Search Controls

                                                                                                                                MyWindowName.textNameBrowse.Enabled := True

                                                                                                                                MyWindowName.btn1Browse.Enabled := True

                                                                                                                                MyWindowName.Grid1Browse.Enabled := True

                                                                                                                MyWindowName.ComboCustomer.Enabled := False

                                                                                                END OF IF STATEMENT

                                                                                self:OperationMode = p1

                                                                End of Method (Return 0)

                                                Define Method OnBeforeDelete Class MyClassName

                                                                Start Here

                                                                                myout = self:oCon.execute("delete from "+self:tablename3+" where "+self:linkmasterkey+" = " + str(self:nOrderNumber))

                                                                End of Method (Return myout)

                                                Define Method onAddClick Class MyClassName

                                                                Start Here

                                                                                Local myRS,nValue

                                                                                nvalue = 0

                                                                                get new order number

                                                                                                myRS = Create New ADODB RecordSet Object

                                                                                                Open Recordset myRS , Connection self:oCon , CursorType 1 , SQL Statement "Select * from " + self:tablename4

                                                                                                nValue = ADODB RecordSet (myRS) Get Field (self:countercolumn) Value

                                                                                                nvalue = nvalue+1

                                                                                                ADODB RecordSet (myRS) Set Field (self:countercolumn) Value To (nvalue)

                                                                                                ADODB RecordSet myRS - Update Record

                                                                                                Close ADODB RecordSet myRS

                                                                                self:nOrderNumber = nValue

                                                                                MyWindowName.textOrderNumber.Value := alltrim(str(self:nOrderNumber))

                                                                End of Method (Return 0)

                                                Define Method search2 Class MyClassName

                                                                Start Here

                                                                                Local oRS,cName,myMax,x,x2,mymax2,vname,vname2,vid

                                                                                cName = MyWindowName.textNamebrowse2.Value

                                                                                oRS = Create New ADODB RecordSet Object

                                                                                Open Recordset oRS , Connection self:oCon , CursorType 1 ,

                                                                                SQL Statement "Select * from "+self:tableName2 +" where "+self:linkmasterkey+"= "+str(self:nOrderNumber)+" and "+self:column2+" like '" + cName + "%'"

                                                                                mymax := ADODB RecordSet (oRS) , Get Records Count

                                                                                MyWindowName.grid1browse2.DeleteAllItems ( )

                                                                                self:ResultPrimaryKeys2 = {}

                                                                                MyWindowName.grid1browse2.Value := 0

                                                                                IF ( mymax > 0 )

                                                                                                Start Here

                                                                                                                FOR LOOP ( From x = 1 To mymax Step 1)

                                                                                                                                Start Here

                                                                                                                                                vname = ADODB RecordSet (oRS) Get Field (self:column2) Value

                                                                                                                                                temp_array = {}

                                                                                                                                                mymax2 = Get Length of String/Variable/Array self:columns2

                                                                                                                                                FOR LOOP ( From x2 = 1 To mymax2 Step 1)

                                                                                                                                                                Start Here

                                                                                                                                                                                vname2 = ADODB RecordSet (oRS) Get Field (self:columns2[x2]) Value

                                                                                                                                                                                IF ( valtype(vname2) = "N" )

                                                                                                                                                                                                Start Here

                                                                                                                                                                                                                VNAME2 = CONVERT VNAME2 TO STRING

                                                                                                                                                                                                                VNAME2 = All Trim VNAME2

                                                                                                                                                                                                END OF IF STATEMENT

                                                                                                                                                                                Add item vname2 To Array temp_array

                                                                                                                                                                End of For Loop

                                                                                                                                                MyWindowName.grid1browse2.AddItem ( temp_array )

                                                                                                                                                vid = ADODB RecordSet (oRS) Get Field (self:PrimaryKey2) Value

                                                                                                                                                vid = CONVERT vid TO STRING

                                                                                                                                                Add item vid To Array self:ResultPrimaryKeys2

                                                                                                                                                ADODB RecordSet oRS - Goto Next Record

                                                                                                                                End of For Loop

                                                                                                END OF IF STATEMENT

                                                                                Close ADODB RecordSet oRS

                                                                End of Method (Return 0)

                                                Define Method DelRecord2 Class MyClassName

                                                                Start Here

                                                                                Local nvalue,myout

                                                                                nvalue = MyWindowName.grid1browse2.Value

                                                                                IF ( nvalue > 0 )

                                                                                                Start Here

                                                                                                                nvalue = self:resultprimarykeys2[nvalue]

                                                                                                                myout = self:oCon.execute("delete from "+self:tablename3+" where "+self:primarykey3+" = " + nvalue)

                                                                                                                myout = self.search2()

                                                                                                ELSE

                                                                                                                Start Here

                                                                                                                                Show Message "You should Create/Select Item First" Title "Sorry" Type: Message Box

                                                                                                END OF IF STATEMENT

                                                                End of Method (Return 0)

                                                Define Method AddRecord2 Class MyClassName

                                                                Start Here

                                                                                Local oRS,nValue

                                                                                IF ( self:nOrderNumber > 0 )

                                                                                                Start Here

                                                                                                                Item

                                                                                                                                self:nItem = MyWindowName.ComboItem.Value

                                                                                                                                self:nItem = self:ItemItemsids[self:nItem]

                                                                                                                                oRS = Create New ADODB RecordSet Object

                                                                                                                                Open Recordset oRS , Connection self:oCon , CursorType 1 , SQL Statement "Select * from "+self:tablename3

                                                                                                                                ADODB RecordSet oRS - Add New Record

                                                                                                                                save data

                                                                                                                                                ADODB RecordSet (oRS) Set Field (self:linkchildkey) Value To (self:nItem)

                                                                                                                                                ADODB RecordSet (oRS) Set Field (self:linkmasterkey) Value To (self:nOrderNumber)

                                                                                                                                ADODB RecordSet oRS - Update Record

                                                                                                                                Close ADODB RecordSet oRS

                                                                                                                                myout = self.Search2()

                                                                                                ELSE

                                                                                                                Start Here

                                                                                                                                Show Message "You should Create/Select Order First" Title "Sorry" Type: Message Box

                                                                                                END OF IF STATEMENT

                                                                End of Method (Return 0)

                                                Define Method itemchange Class MyClassName

                                                                Start Here

                                                                                Local myrs,MYVALUE

                                                                                TVALUE = MyWindowName.Comboitem.Value

                                                                                IF ( TVALUE = 0 )

                                                                                                Start Here

                                                                                                                Return 0

                                                                                                END OF IF STATEMENT

                                                                                MYVALUE = self:ItemItemsids[TVALUE]

                                                                                myrs = Create New ADODB RecordSet Object

                                                                                MYVALUE = CONVERT MYVALUE TO STRING

                                                                                Do Task based on item change

                                                                End of Method (Return 0)

                                Class Methods

                                                Define Method closewindow Class MyClassName

                                                                Start Here

                                                                                myout = self.disconnect()

                                                                                MyWindowName.Release ( )

                                                                End of Method (Return 0)

                                                Define Method AutoGotoRecord Class MyClassName

                                                                Start Here

                                                                                IF ( self:LFindRecord = true .and. self:OperationMode = 2 )

                                                                                                Start Here

                                                                                                                ADODB RecordSet (self:oRS) Find , Cirteria self:CFindExpr

                                                                                                                mycheck = ADODB RecordSet self:oRS , Check EOF

                                                                                                                IF ( mycheck = true )

                                                                                                                                Start Here

                                                                                                                                                ADODB RecordSet self:oRS - Goto Previous Record

                                                                                                                                END OF IF STATEMENT

                                                                                                                IF ( iswindowdefined( MyWindowName ) )

                                                                                                                                Start Here

                                                                                                                                                myout = self.showrecord()

                                                                                                                                                MyWindowName.SetFocus ( )

                                                                                                                                END OF IF STATEMENT

                                                                                                END OF IF STATEMENT

                                                                                self:LFindRecord = false

                                                                                self:CFindExpr = ""

                                                                End of Method (Return 0)

                                                Define Method BeforeSearch Class MyClassName

                                                                Start Here

                                                                                MyWindowName.grid1Browse.DeleteAllItems ( )

                                                                                MyWindowName.grid1Browse.Value := 0

                                                                End of Method (Return 0)

                                                Define Method SearchAdd(temp_array) Class MyClassName

                                                                Start Here

                                                                                MyWindowName.grid1Browse.AddItem ( temp_array )

                                                                End of Method (Return 0)

                                                Define Method SetTimer(p1) Class MyClassName

                                                                Start Here

                                                                                MyWindowName.Timer1.Enabled := p1

                                                                End of Method (Return 0)

                                                Define Method GetSearchValue Class MyClassName

                                                                Start Here

                                                                                cName = MyWindowName.textNameBrowse.Value

                                                                End of Method (Return cName)

                                                Define Method OpenDataWindow Class MyClassName

                                                                Start Here

                                                                                Local nvalue,myout

                                                                                nvalue = MyWindowName.grid1browse.Value

                                                                                IF ( nvalue > 0 )

                                                                                                Start Here

                                                                                                                myout = self.ShowDataWindow(nvalue)

                                                                                                                MyWindowName.Grid1browse.SetFocus ( )

                                                                                                END OF IF STATEMENT

                                                                End of Method (Return 0)

                                                Define Method ShowDataWindow(nvalue) Class MyClassName

                                                                Start Here

                                                                                self.LFindRecord = true

                                                                                self.CFindExpr = self:primarykey+"= '"+self:resultprimarykeys[nvalue]+"' "

                                                                                myout = self.ShowWindow()

                                                                End of Method (Return 0)

                                                Define Method mytimer Class MyClassName

                                                                Start Here

                                                                                myout = self.search()

                                                                                MyWindowName.Timer1.Enabled := false

                                                                End of Method (Return 0)

                                                Define Method OnBeforeEdit Class MyClassName

                                                                Start Here

                                                                End of Method (Return myout)

                                                Define Method OnAfterAddEdit Class MyClassName

                                                                Start Here

                                                                End of Method (Return myout)

4 - Application during the runtime

runtime1.JPG

Fig. 36