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by **Ehab Samir Aziz** » Wed Apr 18, 2007 5:23 pm

The auto complete feature in any internet for getting a variable . I need it in Xbrowse edititing. Is there auto complete for get class ?

by **Antonio Linares** » Thu Apr 19, 2007 12:18 pm

Ehab,

What text should be used to auto complete a Get ?

by **Ehab Samir Aziz** » Wed Apr 25, 2007 9:23 am

for example if I will get data from field can the auto complete works . For instance if I pressed letter A I will get all data that begins with A and etc..

by **Maurilio Viana** » Wed Apr 25, 2007 11:27 am

Ehab and Antonio,

I use this class I created: TAutoGet
New features, bug fixes and enhancements are welcome :-)

Code: Select all Expand view RUN: // TAutoGet.prg // Auto complete text in get features // By: Maurilio Viana mouri_ryo@hotmail.com // // New features, bug fixes and enhancements are welcome :-) // Please, let me now when you include new features, bug fixes etc in this class // // ToDo: Show drop down window with possible options when typing // #include "fivewin.ch" CLASS TAutoGet FROM TGet DATA aItems AS ARRAY METHOD New( nRow , nCol , bSetGet , oWnd , nWidth , nHeight,; cPict , bValid , nClrFore , nClrBack , oFont , lDesign,; oCursor , lPixel , cMsg , lUpdate , bWhen , lCenter,; lRight , bChanged, lReadOnly, lPassword, lNoBorder, nHelpID,; lSpinner, bUp , bDown , bMin , bMax , aItems ) CONSTRUCTOR METHOD ReDefine( nID , bSetGet , oWnd , nHelpId , cPict, bValid ,; nClrFore, nClrBack, oFont , oCursor , cMsg , lUpdate,; bWhen , bChanged, lReadOnly, lSpinner, bUp , bDown ,; bMin , bMax, aItems ) CONSTRUCTOR METHOD SetItems( aItems ) METHOD AutoFill() END CLASS //----------------------------------------------------------------------------------------- METHOD New(nRow , nCol , bSetGet , oWnd , nWidth , nHeight , cPict ,; bValid , nClrFore , nClrBack, oFont , lDesign, oCursor , lPixel ,; cMsg , lUpdate , bWhen , lCenter , lRight , bChanged, lReadOnly,; lPassword, lNoBorder, nHelpId , lSpinner, bUp , bDown , bMin ,; bMax , aItems) CLASS TAutoGet local nLen, i Super:New(nRow , nCol , bSetGet , oWnd , nWidth , nHeight,; cPict , bValid , nClrFore , nClrBack , oFont , lDesign,; oCursor, lPixel , cMsg , lUpdate , bWhen , lCenter,; lRight , ::bChange, lReadOnly, lPassword, lNoBorder, nHelpId,; lSpinner, bUp , bDown , bMin , bMax ) if(aItems == Nil, aItems := {}, ) ::aItems := aItems ::bPostKey := {|oGet, cBuffer| ::AutoFill() } return( Self ) //----------------------------------------------------------------------------------------- METHOD ReDefine(nID , bSetGet , oWnd , nHelpId, cPict , bValid, nClrFore,; nClrBack , oFont , oCursor, cMsg , lUpdate, bWhen , bChanged,; lReadOnly, lSpinner, bUp , bDown , bMin , bMax , aItems ) CLASS TAutoGet Super:ReDefine(nID , bSetGet , oWnd , nHelpId, cPict , bValid, nClrFore ,; nClrBack , oFont , oCursor, cMsg , lUpdate, bWhen , ::bChange,; lReadOnly, lSpinner, bUp , bDown , bMin , bMax , aItems ) if(aItems == Nil, aItems := {}, ) ::aItems := aItems ::bPostKey := {|oGet, cBuffer| ::AutoFill() } return( Self ) //--------------------------------------------------------------------------------------- // Set items of AutoGet //--------------------------------------------------------------------------------------- METHOD SetItems( aItems ) CLASS TAutoGet if(aItems == Nil, aItems := {}, ) ::aItems := aItems return( Nil ) //--------------------------------------------------------------------------------------- // Auto fill text when type based on aItems options // Return: Ever return .T. //--------------------------------------------------------------------------------------- METHOD AutoFill() CLASS TAutoGet local nPosItem := 0 // Text position into ::aItems local nPosCursor := ::nPos // Current cursor position local nLenght := len(::cText) // Text lenght local cStartTxt := left(::cText, nPosCursor-1) // Start text (position 1 to cursor position -1) local cItem if len(::aItems) = 0 // We have no items to search in this GET return(.T.) endif //------------------------------------------------------------------------- // We use ::cargo to control when we must search in ::aItems for typed text // We must seek in ::aItems when GET is blank or when user clear it //------------------------------------------------------------------------- if valtype(::Cargo) != "L" // Cargo isn't logical yet -> GET received focus now if ! empty(::Value) // GET isn't empty ::Cargo := .F. // We don't use autofill else // GET is empty ::Cargo := .T. // Use autofill endif else // We are controlling if use or no autofill if empty(::Value) // User could cleaned the GET text ::Cargo := .T. // Use autofill endif endif //------------------------------------------------------------------------- // When lost focus we clean ::Cargo and set GET cursor position to 1st pos //------------------------------------------------------------------------- ::bLostFocus := {|| ::SetPos(1), ::Cargo := Nil } if ! ::Cargo // If don't control autofill return(.t.) endif nKey := ::nLastKey do case case nKey == 9 .or. ; // Tab key nKey == 13 .or. ; // Enter key nKey == 46 // Del key ::Assign() // Assign typed text case nKey > 31 FOR EACH cItem IN ::aItems nPosItem += 1 if ToUpper( cItem ) = ToUpper(cStartTxt) nLenght := len( rtrim( cItem ) ) cItem += space( nLenght - len(cItem) ) ::SetText( cItem ) ::SetSel( nPosCursor -1, nLenght) // Select found text return(.t.) endif NEXT ::HideSel() // Text not found -> Undo selected text endcase return( .T. ) // Convert latin characters to ANSI upper case // (for any reason AnsiUpper cause a GPF with Comercial xHB) STATIC function ToUpper( cString ) cString := upper( cString ) cString := strtran(strtran(strtran(strtran(cString,"á","Á"),"à","À"),"ã","Ã"),"â","Â") cString := strtran(strtran(cString,"é","É"),"ê","Ê") cString := strtran(cString,"í","Í") cString := strtran(strtran(strtran(cString,"ó","Ó"),"õ","Õ"),"ô","Ô") cString := strtran(strtran(strtran(cString,"ú","Ú"),"ñ","Ñ"),"ç","Ç") return( cString ) // --- EoF ---

xBase definition (AutoGet.ch):

Code: Select all Expand view RUN: /*----------------------------------------------------------------------------// !short: AUTOGET */ #xcommand REDEFINE AUTOGET [ <oGet> VAR ] <uVar> ; [ ID <nId> ] ; [ <dlg: OF, WINDOW, DIALOG> <oDlg> ] ; [ <help:HELPID, HELP ID> <nHelpId> ] ; [ VALID <ValidFunc> ] ; [ <pict: PICTURE, PICT> <cPict> ] ; [ <color:COLOR,COLORS> <nClrFore> [,<nClrBack>] ] ; [ FONT <oFont> ] ; [ CURSOR <oCursor> ] ; [ MESSAGE <cMsg> ] ; [ <update: UPDATE> ] ; [ WHEN <uWhen> ] ; [ ON CHANGE <uChange> ] ; [ <readonly: READONLY, NO MODIFY> ] ; [ <spin: SPINNER> [ON UP <SpnUp>] [ON DOWN <SpnDn>] [MIN <Min>] [MAX <Max>] ] ; [ ITEMS <aItems>] ; => ; [ <oGet> := ] TAutoGet():ReDefine( <nId>, bSETGET(<uVar>), <oDlg>,; <nHelpId>, <cPict>, <{ValidFunc}>, <nClrFore>, <nClrBack>,; <oFont>, <oCursor>, <cMsg>, .T., <{uWhen}>,; [ \{|nKey,nFlags,Self| <uChange> \}], <.readonly.>,; <.spin.>, <{SpnUp}>, <{SpnDn}>, <{Min}>, <{Max}>, <aItems>) #command @ <nRow>, <nCol> AUTOGET [ <oGet> VAR ] <uVar> ; [ <dlg: OF, WINDOW, DIALOG> <oWnd> ] ; [ <pict: PICTURE, PICT> <cPict> ] ; [ VALID <ValidFunc> ] ; [ <color:COLOR,COLORS> <nClrFore> [,<nClrBack>] ] ; [ SIZE <nWidth>, <nHeight> ] ; [ FONT <oFont> ] ; [ <design: DESIGN> ] ; [ CURSOR <oCursor> ] ; [ <pixel: PIXEL> ] ; [ MESSAGE <cMsg> ] ; [ <update: UPDATE> ] ; [ WHEN <uWhen> ] ; [ <lCenter: CENTER, CENTERED> ] ; [ <lRight: RIGHT> ] ; [ ON CHANGE <uChange> ] ; [ <readonly: READONLY, NO MODIFY> ] ; [ <pass: PASSWORD> ] ; [ <lNoBorder: NO BORDER, NOBORDER> ] ; [ <help:HELPID, HELP ID> <nHelpId> ] ; [ ITEMS <aItems>] ; => ; [ <oGet> := ] TAutoGet():New( <nRow>, <nCol>, bSETGET(<uVar>),; [<oWnd>], <nWidth>, <nHeight>, <cPict>, <{ValidFunc}>,; <nClrFore>, <nClrBack>, <oFont>, <.design.>,; <oCursor>, <.pixel.>, <cMsg>, .T., <{uWhen}>,; <.lCenter.>, <.lRight.>,; [\{|nKey, nFlags, Self| <uChange>\}], <.readonly.>,; <.pass.>, [<.lNoBorder.>], <nHelpId>,,,,,,<aItems> ) #command @ <nRow>, <nCol> AUTOGET [ <oGet> VAR ] <uVar> ; [ <dlg: OF, WINDOW, DIALOG> <oWnd> ] ; [ <pict: PICTURE, PICT> <cPict> ] ; [ VALID <ValidFunc> ] ; [ <color:COLOR,COLORS> <nClrFore> [,<nClrBack>] ] ; [ SIZE <nWidth>, <nHeight> ] ; [ FONT <oFont> ] ; [ <design: DESIGN> ] ; [ CURSOR <oCursor> ] ; [ <pixel: PIXEL> ] ; [ MESSAGE <cMsg> ] ; [ <update: UPDATE> ] ; [ WHEN <uWhen> ] ; [ <lCenter: CENTER, CENTERED> ] ; [ <lRight: RIGHT> ] ; [ ON CHANGE <uChange> ] ; [ <readonly: READONLY, NO MODIFY> ] ; [ <help:HELPID, HELP ID> <nHelpId> ] ; [ <spin: SPINNER> [ON UP <SpnUp>] [ON DOWN <SpnDn>] [MIN <Min>] [MAX <Max>] ] ; [ ITEMS <aItems>] ; => ; [ <oGet> := ] TAutoGet():New( <nRow>, <nCol>, bSETGET(<uVar>),; [<oWnd>], <nWidth>, <nHeight>, <cPict>, <{ValidFunc}>,; <nClrFore>, <nClrBack>, <oFont>, <.design.>,; <oCursor>, <.pixel.>, <cMsg>, .T., <{uWhen}>,; <.lCenter.>, <.lRight.>,; [\{|nKey, nFlags, Self| <uChange>\}], <.readonly.>,; .f., .f., <nHelpId>,; <.spin.>, <{SpnUp}>, <{SpnDn}>, <{Min}>, <{Max}>, <aItems> )

A fragment of code:

#include "autoget.ch"

(...)
cName := space(20)
aNames := {"Mauro", "Mauricio", "Maurilio", "Maurizio"}

redefine autoget oGet var cName id 101 of oDlg items aNames

(...)
You can update items from available text to autocomplete using:
aNames := {"Angelo", "Antonio", "Afonso"}
oGet:SetItems( aNames )

Best regards!
Maurilio

by **James Bott** » Wed Apr 25, 2007 7:18 pm

Maurilio,

Good work. I like it.

I have made a few changes (see comments in code).

AutoFill (or autocomplete) is somewhat of a Pandora's box. If you look at Outlook Express's "To" field and IE's "Address" field you will see two completely different methods of autocomplete. OE uses some kind of probability rather than the first alpha match. I have several Davids in my address book, but the one I use the most is near the end of the alpha sort of Davids. However, all I have to do is type "D" and his name shows up.

In contrast, IE has a drop-down list that is alpha order--not listed by probability.

Things get even more complicated with multi-user applications. Do we store all items entered by all users or do we separate out items by user? Each circumstance may require a different solution.

Do we use arrays, or direct database lookups? Arrays are good if they are small, but what about large arrays of say 10,000 items? Do we read them from a DBF each time the dialog is opened, or store them in a static array? A static would be faster but will use up a lot of memory, so perhaps a direct database lookup would be better with large lists.

Do we do alpha lookups or probability lookups? Again, each situation may require a different solution.

How do we handle adding new items and when? Do we add all new items entered by any user? Only the most used?

So, there is no simple answer to providing autocomplete functionality. But autocomplete solutions are very helpful to the user so they are certainly worth working on.

James

Code: Select all Expand view RUN: // TAutoGet.prg // Auto complete text in get features // By: Maurilio Viana, mouri_ryo@hotmail.com // Date: 4/25/2007 // New features, bug fixes and enhancements are welcome :-) // Please, let me now when you include new features, bug fixes etc in this class // // ToDo: Show drop down window with possible options when typing // /* Revisions 4/25/2007 10:49AM by James Bott Method AutoFill: nKey was not defined as a LOCAL. Fixed. Method AutoFill: nLength was mispelled (as nLenght). Fixed. Method AutoFill: ::Cargo changed to ::lAuto (see reason below) Method AutoFill: Changed to using vkey.ch manifest constants instead of numbers. Method Redefine: Was passing aItems to the parent method (not needed). Method LostFocus: Added this method. Methos New() and Redefine(). Was passing bChanged, and then ::bChange to parent. Fixed. It is not a good idea to use ::Cargo, ::bPostKey, or ::bLostFocus in the class since these then cannot be used by the programmer. It would be better to subclass the needed methods and add whatever functionality needed. So, ::Cargo and ::bLostFocus were eliminated. Unfortuneately, not using ::bPostKey is somewhat of a challenge. We can subclass KeyDown() and KeyChar() but some of each method will have to be copied into the new methods and thus if there are any changes to these sections of code in future versions of TGET, then this method in TAutoGet will have to be updated also. Bug?: If the items in ::aArray are in proper case, e.g. "Mauro," they are automatically converted to proper case when autofilled, however, if you backspace they are converted to all lower case. */ #include "fivewin.ch" //---------------------------------------------------------------------------// CLASS TAutoGet FROM TGet DATA aItems AS ARRAY DATA lAuto AS LOGICAL METHOD New( nRow , nCol , bSetGet , oWnd , nWidth , nHeight,; cPict , bValid , nClrFore , nClrBack , oFont , lDesign,; oCursor , lPixel , cMsg , lUpdate , bWhen , lCenter,; lRight , bChanged, lReadOnly, lPassword, lNoBorder, nHelpID,; lSpinner, bUp , bDown , bMin , bMax , aItems ) CONSTRUCTOR METHOD ReDefine( nID , bSetGet , oWnd , nHelpId , cPict, bValid ,; nClrFore, nClrBack, oFont , oCursor , cMsg , lUpdate,; bWhen , bChanged, lReadOnly, lSpinner, bUp , bDown ,; bMin , bMax, aItems ) CONSTRUCTOR METHOD SetItems( aItems ) METHOD AutoFill() METHOD LostFocus( hWndGetFocus ) inline ::SetPos(1), ::lAuto := Nil, ::super:LostFocus( hWndGetFocus ) END CLASS //---------------------------------------------------------------------------// METHOD New(nRow , nCol , bSetGet , oWnd , nWidth , nHeight , cPict ,; bValid , nClrFore , nClrBack, oFont , lDesign, oCursor , lPixel ,; cMsg , lUpdate , bWhen , lCenter , lRight , bChanged, lReadOnly,; lPassword, lNoBorder, nHelpId , lSpinner, bUp , bDown , bMin ,; bMax , aItems) CLASS TAutoGet local nLen, i Super:New(nRow , nCol , bSetGet , oWnd , nWidth , nHeight,; cPict , bValid , nClrFore , nClrBack , oFont , lDesign,; oCursor, lPixel , cMsg , lUpdate , bWhen , lCenter,; lRight , bChanged, lReadOnly, lPassword, lNoBorder, nHelpId,; lSpinner, bUp , bDown , bMin , bMax ) if(aItems == Nil, aItems := {}, ) ::aItems := aItems ::bPostKey := {|oGet, cBuffer| ::AutoFill() } return( Self ) //---------------------------------------------------------------------------// METHOD ReDefine(nID , bSetGet , oWnd , nHelpId, cPict , bValid, nClrFore,; nClrBack , oFont , oCursor, cMsg , lUpdate, bWhen , bChanged,; lReadOnly, lSpinner, bUp , bDown , bMin , bMax , aItems ) CLASS TAutoGet Super:ReDefine(nID , bSetGet , oWnd , nHelpId, cPict , bValid, nClrFore ,; nClrBack , oFont , oCursor, cMsg , lUpdate, bWhen , bChanged,; lReadOnly, lSpinner, bUp , bDown , bMin , bMax ) if(aItems == Nil, aItems := {}, ) ::aItems := aItems ::bPostKey := {|oGet, cBuffer| ::AutoFill() } return( Self ) //---------------------------------------------------------------------------// // Set items of AutoGet //---------------------------------------------------------------------------// METHOD SetItems( aItems ) CLASS TAutoGet if(aItems == Nil, aItems := {}, ) ::aItems := aItems return( Nil ) //---------------------------------------------------------------------------// // Auto fill text when typed based on aItems // Return: Always returns .T. //---------------------------------------------------------------------------// METHOD AutoFill() CLASS TAutoGet local nPosItem := 0 // Text position into ::aItems local nPosCursor := ::nPos // Current cursor position local nLength := len(::cText) // Text length local cStartTxt := left(::cText, nPosCursor-1) // Start text (position 1 to cursor position -1) local cItem := "" local nKey := 0 if len(::aItems) = 0 // We have no items to search in this GET return(.T.) endif //------------------------------------------------------------------------- // We use ::lAuto to control when we must search in ::aItems for typed text // We must seek in ::aItems when GET is blank or when user clear it //------------------------------------------------------------------------- if valtype(::lAuto) != "L" // Cargo isn't logical yet -> GET received focus now if ! empty(::Value) // GET isn't empty ::lAuto := .F. // We don't use autofill else // GET is empty ::lAuto := .T. // Use autofill endif else // We are controlling if use or no autofill if empty(::Value) // User could cleaned the GET text ::lAuto := .T. // Use autofill endif endif if ! ::lAuto // If don't control autofill return(.t.) endif nKey := ::nLastKey do case case nKey == VK_TAB .or. ; nKey == VK_RETURN .or. ; nKey == VK_DELETE ::Assign() // Assign typed text case nKey >= 32 .and. <= 256 FOR EACH cItem IN ::aItems nPosItem += 1 if ToUpper( cItem ) = ToUpper(cStartTxt) nLength := len( rtrim( cItem ) ) cItem += space( nLength - len(cItem) ) ::SetText( cItem ) ::SetSel( nPosCursor -1, nLength) // Select found text return(.t.) endif NEXT ::HideSel() // Text not found -> Undo selected text endcase return( .T. ) //---------------------------------------------------------------------------// // Convert latin characters to ANSI upper case // (for some reason AnsiUpper causes a GPF with Commercial xHB) //---------------------------------------------------------------------------// STATIC function ToUpper( cString ) cString := upper( cString ) cString := strtran(strtran(strtran(strtran(cString,"á","Á"),"à","À"),"ã","Ã"),"â","Â") cString := strtran(strtran(cString,"é","É"),"ê","Ê") cString := strtran(cString,"í","Í") cString := strtran(strtran(strtran(cString,"ó","Ó"),"õ","Õ"),"ô","Ô") cString := strtran(strtran(strtran(cString,"ú","Ú"),"ñ","Ñ"),"ç","Ç") return( cString ) //---------------------------------------------------------------------------// // --- EoF ---

by **Maurilio Viana** » Wed Apr 25, 2007 8:37 pm

Thanks a lot, James!!!
Very good suggestions and fixes!

About:
>>Bug?: If the items in ::aArray are in proper case, e.g. "Mauro," they are >>automatically converted
>>to proper case when autofilled, however, if you backspace they are >>converted to all lower case.

The true is that I don't know what do in this case... :-(

Best regards and thanks again!!!
Maurilio

by **AOKISANTOS** » Fri Apr 27, 2007 1:27 am

Maurilio, que erro é este? :cry:

xHarbour Compiler build 0.99.71 (SimpLex)
Copyright 1999-2006, http://www.xharbour.org http://www.harbour-project.org/
Compiling 'C:\genesis\tautoget.prg'...
C:\genesis\tautoget.prg(138) Error E0030 Syntax error: "parse error at '32'"
C:\genesis\tautoget.prg(150) Error E0017 Unclosed control structure at line 135
2 errors

No code generated

by **ssbbs** » Fri Apr 27, 2007 2:27 am

AOKISANTOS wrote:Maurilio, que erro é este?

xHarbour Compiler build 0.99.71 (SimpLex)
Copyright 1999-2006, http://www.xharbour.org http://www.harbour-project.org/
Compiling 'C:\genesis\tautoget.prg'...
C:\genesis\tautoget.prg(138) Error E0030 Syntax error: "parse error at '32'"
C:\genesis\tautoget.prg(150) Error E0017 Unclosed control structure at line 135
2 errors

No code generated

old: case nKey >= 32 .and. <= 256
change to -> case nKey >= 32 .and. nKey <= 256

by **ssbbs** » Fri Apr 27, 2007 3:37 am

bug fix:

Code: Select all Expand view RUN: Case nKey >= 32 .And. nKey <= 256 : : ::SetText( cItem ) ::SetSel( nPosCursor -1, nLength) // Select found text ::oGet:Buffer = Pad( cItem, Len( ::oGet:Buffer )) // add by:ss-bbs return(.t.) endif NEXT

bug: press 'M' -> VK_RIGHT -> 'S' -> 'A'
data is 'M SA'

by **Maurilio Viana** » Fri Apr 27, 2007 11:18 am

Many thanks, ssbbs!

Regards,
Maurilio

by **Ehab Samir Aziz** » Fri Apr 27, 2007 5:49 pm

can you guide me how to use it to get a value from field without using resources from code please ?
What is written inside autoget.ch Could you send it to me ?

by **James Bott** » Fri Apr 27, 2007 6:01 pm

Ehab,

>can you guide me how to use it to get a value from field without using resources from code please ?

Code: Select all Expand view RUN: #include "fivewin.ch" #include "autoget.ch" function main() local oDlg, oGet, cName, aNames cName := space(20) aNames := {"Mauro", "Mauricio", "Maurilio", "Maurizio"} define dialog oDlg title "Test Autoget" @ 2,2 autoget oGet var cName of oDlg items aNames activate dialog oDlg centered return nil

>What is written inside autoget.ch Could you send it to me ?

The autoget.ch file was posted in the original message just after the PRG code (in a message above in this thread).

by **Ehab Samir Aziz** » Fri Apr 27, 2007 7:40 pm

┌────────────────────────────────────────────────────────────────────────────┐
│ FiveWin for Harbour 7.01 - January 2007 Harbour development power │
│ (c) FiveTech, 1993-2006 for Microsoft Windows 95/98/NT/2000/ME and XP

Compiling...
Harbour Alpha build 1.0 Intl.
Copyright 1999-2007, http://www.harbour-project.org/
Compiling 'autoget.prg' and generating preprocessed output to 'autoget.ppo'...
autoget.prg(42) Error E0030 Syntax error: "syntax error at '@'"
1 error

No code generated
Borland C++ 5.5.1 for Win32 Copyright (c) 1993, 2000 Borland
autoget.c:
Turbo Incremental Link 5.00 Copyright (c) 1997, 2000 Borland
* Application successfully built

E:\programs\Database\clipper\clpfwh\sitex>

by **James Bott** » Fri Apr 27, 2007 8:15 pm

Ehab,

There is no @ symbol in autoget.prg.

Did you paste the sample code into it? If so, then you need to include "autoget.ch."

James

by **Ehab Samir Aziz** » Sat Apr 28, 2007 10:39 am

Oka I got it but that was not my goal . My goal was to open combobox with all values matched with the first letter and I can choose any one ??

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