[APBeta] Script help

[Jeff Young]

Paul,

I've written the following script to allow editing of user image descriptions (and some of the flags).  The first dialog shows a list of user images.  Double-clicking one of them brings up an edit dialog which allows you to edit the description and two of the flags.

The first dialog list is doing a string-sort instead of an ID-sort, though.  Is there a way to return ID for the MultiFieldObject's ColumnType so the list will sort correctly?

Thanks,
Jeff.

function EditImage(img as Image) as boolean
     dim editor as Dialog, imgCanvas as Canvas
     editor = new Dialog
     imgCanvas = Dialog.NewCanvas(500, 500)
     imgCanvas.DrawImage(img, 0, 0, 500)

     editor.CanvasParameter(imgCanvas)
     editor.StringParameter("Description", img.Description)
     editor.BooleanParameter("Color", img.IsColor)
     editor.BooleanParameter("Black on White", img.IsBlackOnWhite)

     if editor.show("Edit User Image for " + img.ID) then
           img.Description = editor.StringParameter("Description")
           img.IsColor = editor.BooleanParameter("Color")
           img.IsBlackOnWhite = editor.BooleanParameter("Black on White")
           return true
     end if

     return false
end function
function toStr(b as boolean) as string
     if b then
           return "true"
     else
           return "false"
     end if
end function
class ImageMetaData
     implements MultiFieldObject
     ID as string
     Desc as string
     isColor as boolean
     isBlackOnWhite as boolean
     index as integer
     function ColumnName(idx as integer) as string
           if idx = 1 then
                return "ID"
           elseif idx = 2 then
                return "Description"
           elseif idx = 3 then
                return "Color"
           elseif idx = 4 then
                return "Black on White"
           elseif idx = 5 then
                return "Index"
           end if
     end function
     function ColumnType(idx as integer) as integer
           if idx = 1 then
                return vtype_String
           elseif idx = 2 then
                return vtype_String
           elseif idx = 3 then
                return vtype_Boolean
           elseif idx = 4 then
                return vtype_Boolean
           elseif idx = 5 then
                return vtype_Integer
           end if
     end function
     function ColumnValue(idx as integer) as string
           if idx = 1 then
                return ID
           elseif idx = 2 then
                return Desc
           elseif idx = 3 then
                return toStr(isColor)
           elseif idx = 4 then
                return toStr(isBlackOnWhite)
           elseif idx = 5 then
                return Str(index)
           end if
           return "undefined column (" + Str(idx) + ")"
     end function
     function nColumns() as integer
           return 5
     end function
end class
function getImageMetaData(img as Image, idx as integer) as ImageMetaData
     dim metadata as ImageMetaData
     metadata = new ImageMetaData

     metadata.ID = img.ID
     metadata.Desc = img.Description
     metadata.isColor = img.IsColor
     metadata.isBlackOnWhite = img.IsBlackOnWhite
     metadata.index = idx

     return metadata
end function
sub main()
try
     dim imageData(1000) as ImageMetaData

     dim i, idx as integer, img as Image
     i = 0
     for idx = 1 to Image.Count
           img = Image.Get(idx)
           if img.IsUser then
                imageData(i) = getImageMetaData(img, idx)
                i = i + 1
           end if
     next
     redim imageData(i-1)

     dim browser as Dialog
     while true
           browser = new Dialog
           browser.ListChoiceParameter("User Images", 0, imageData, true, 50, true)
           browser.ParameterWindowNoCancel()
           browser.ParameterWindowOKCaption("Done")

           if browser.show("User Image Browser") then
                if browser.DoubleClickedList() = "User Images" then
                     i = browser.ListChoiceParameter("User Images")
                     idx = imageData(i).index
                     img = Image.Get(idx)
                     if EditImage(img) then
                           imageData(i) = getImageMetaData(img, idx)
                     end if
                else
                     return
                end if
           else
                return
           end if
     wend
catch
   print "My bad.  Image Browser script generated an exception."
end try
end sub
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