XBROWSE Column Question

[Jimmy]

hi,

how can i "optimize" Column wide (STRETCHCOL_WIDEST)
how can i SET Cursor into 5th Column (also when outside Screen)

[nageswaragunupudi]

how can i "optimize" Column wide (STRETCHCOL_WIDEST)

:nStretchCol := STRETCHCOL_LAST
Stretches the last column to fit the GridWidth
:nStretchCol := STRETCHCOL_WIDEST
Further stretches the widest character column to fit the GridWidth.
:nStretchCol := nCol
Similarly, stretches the column whose nCreationOrder is the same as nCol.

how can i SET Cursor into 5th Column (also when outside Screen)

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oBrw:nSelCol := 5
oBrw:RefreshCurrent()
[/col]
or use :GoToCol( oCol )
oCol can be creationorder / header / column object
[code]
oBrw:GoToCol( 5 )
 

But we can go to only a column which is already visible on the screen. (not hidden or outside the grid width)

[Jimmy]

hi,

But we can go to only a column which is already visible on the screen. (not hidden or outside the grid width)

thx for Answer

is there a Way to "scroll" horizontal by CODE

[nageswaragunupudi]

oBrw:GoRight() // one column to the right
oBrw:GoRightMost() // go to last column

[Jimmy]

hi,

oBrw:GoRight() // one column to the right
oBrw:GoRightMost() // go to last column

ok, thx for Answer

[Jimmy]

hi,

after Answer of Method

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    oBrw:GoRight() // one column to the right
   oBrw:GoRightMost() // go to last column

i have search for "more"

there is a

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METHOD GoToCol( oCol ) CLASS TXBrowse

but no Sample how to use it ...

it seem this CODE work

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   oBro:GoToCol(oBro:aCols[nPosi])

---

when switch ORDSETFOCUS() or SET INDEX TO i try to find Column in XBROWSE
when have NO "own" Header it will display Name of FIELD in Header

in this case this CODE will work where i use INDEXKEY() or OrdKey() to look which FIELD is used

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STATIC FUNCTION FindColumnHeader( oBro )
LOCAL aHeaders := {}
LOCAL nPosi    := 0
LOCAL n, cSeek, aToken

   aToken := AtInside( "+", INDEXKEY() )  // -> hb_ATokens()

   // get rid of Function like UPPER() in IndexKey() 
   cSeek := StripFunc( aToken[ 1 ] )

   FOR n := 1 TO LEN( oBro:aCols )
      AADD( aHeaders, oBro:aCols[ n ] :cHeader )
   NEXT
   // seek in Header if FIELD match
   nPosi := ASCAN( aHeaders, { | x | x = cSeek } )
   IF nPosi > 0
      // jump to Column 
      oBro:GoToCol(oBro:aCols[nPosi])
   ENDIF

RETURN nPosi

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STATIC FUNCTION StripFunc( cSeek )
LOCAL cRet := UPPER( cSeek )
LOCAL aToken

   cRet := STRTRAN( cRet, "UPPER(", "" )
   cRet := STRTRAN( cRet, "DTOS(", "" )
   cRet := STRTRAN( cRet, "STRZERO(", "" )
   cRet := STRTRAN( cRet, "STR(", "" )

   cRet := STRTRAN( cRet, ")", "" )

   IF "->" $ cRet
     aToken := AtInside( "->", cRet )
     cRet := aToken[LEN(aToken)]
   ENDIF

   IF "," $ cRet
     aToken := AtInside( ",", cRet )
     cRet := aToken[1]
   ENDIF

RETURN cRet

p.s. what is better to use INDEXKEY() or OrdKey()

[nageswaragunupudi]

in this case this CODE will work where i use INDEXKEY() or OrdKey() to look which FIELD is used

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SET ORDER TO TAG "CITY"
nCol := AScan( oBrw:aCols, { |oCol| oCol:cSortOrder == OrdSetFocus() } )
? nCol
oCol := oBrw:aCols[ nCol ]
? oCol:nCreationOrder, oCol:cHeader, c:cExpr
// or even better
XBROWSER oCol 

Even if cHeader is different from the field name, oCol:cExpr contains the field name.

Now there is a short-cut.
Instead of writing this long code:

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nCol := AScan( oBrw:aCols, { |oCol| oCol:cSortOrder == OrdSetFocus() } )
oCol := oBrw:aCols[ nCol ]
 

We can simply write

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oCol := oBrw:oCol( "cSortOrder", OrdSetFocus() )
XBROWSER oCol

[nageswaragunupudi]

p.s. what is better to use INDEXKEY() or OrdKey()

OrdKey()

[nageswaragunupudi]

STATIC FUNCTION StripFunc( cSeek )

XBrowse automatically uses similar logic to indentify which INDEX/ORDER to be used for which column and stores the INDEXNAME in the data oCol:cSortOrder, while initially building the browse.
XBrowse uses this information to do AutoSort

[Jimmy]

hi,

XBrowse automatically uses similar logic to indentify which INDEX/ORDER to be used for which column and stores the INDEXNAME in the data oCol:cSortOrder, while initially building the browse.
XBrowse uses this information to do AutoSort

what about Function in Indexkey() like STRZERO()

it does work when have FIELD only but fail when have Function(FIELD), or

[nageswaragunupudi]

what about Function in Indexkey() like STRZERO()

Works

but fail when have Function(FIELD)

Does not fail. It works.

[Jimmy]

hi,

FUNCTION FindColumnHeader() is NOT for "increment" Seek, it is to place Cursor on Header which meet IndexKey()

i can´t find e.g. STRZERO, in RddIncrSeek(), of XBROWSE ... but it seems to work ,,, how can it work ... hm

[nageswaragunupudi]

Do you want to find the column object that is currently sorted on the ordsetfocus() ?

oBrw:oSortCol --> Currently sorted column obect. i.e., the column sorted on the ordsetfocus()
We can now get anything
oBrw:oSortCol:cHeader
oBrw:oSortCol:cExpr // field name

With XBrowse, most of the times, we do not have to write any special code.

[Jimmy]

hi,

thx for Answer

Do you want to find the column object that is currently sorted on the ordsetfocus() ?.

YES

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oBrw:oSortCol --> Currently sorted column obect. i.e., the column sorted on the ordsetfocus()
We can now get anything
oBrw:oSortCol:cHeader
oBrw:oSortCol:cExpr  // field name 

With XBrowse, most of the times, we do not have to write any special code.

it work when have "only" FIELD Name but seems not when have Function "in" INDEXKEY() / Ordkey()
so i "strip" all of String to get FIELD Name "only"

---

more Question :

how is the Syntax to use "Header - click" to SET Order / TAG

in METHOD SetOrder( lSort ) i found OrdDescend()
how does OrdDescend() work

when usig OrdWildSeek() in XBROWSE how to "continue"
i did not found a 2nd OrdWildSeek() or a loop

[nageswaragunupudi]

it work when have "only" FIELD Name but seems not when have Function "in" INDEXKEY() / Ordkey()
so i "strip" all of String to get FIELD Name "only"

I suggest this function, which can handle index key of any complexity.
If more than one field is used in the key expression, it returns the field name which occurs first in the key.

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function FieldInKey( cKey )

   local aStruct := DBSTRUCT()
   local n  := 1
   local cToken, cSep, nAt

   cKey  := Upper( cKey )
   cKey  := StrTran( StrTran( cKey, "->", '!' ), '=', '!' )
   cKey  := CharRem( " ", cKey )

   do while !Empty( cToken := TOKEN( cKey, nil, n, nil, nil, @cSep ) )
      if !( cSep $ "!(" )
         if ( nAt := AScan( aStruct, { |a| a[ 1 ] = cToken } ) ) > 0
            return aStruct[ nAt, 1 ]
         endif
      endif
      n++
   enddo

return ""
 

Please test with any complex expression and see if it fails.