I know that one can make a text field and a scroller, and use the scroller to control the text field. I have done that and captured the code in a little demo. I know that one can fill a text-list with data and use the associated scroller to move around in the data. What I am wondering is, in a text-list, is it possible to fill it with data and set some attribute so that the associated scroller starts at some place besides the top? I have tried the ideas in the sample below without success. What I am trying to accomplish is to fill up a text list with a large amount of data sorted in alphabetical order, and then provide a way to jump down the list to some starting point somewhere in the middle, to reduce the amount of scrolling. I realize that this might not be possible. I have found the REBOL/View documentation obscure enough so that I am not quite sure of the possibilities. Thank you. Sample follows. Code: REBOL [ ] SHOW-SELECTED: does [ SELECTED-ITEM/text: mold FILE-NAMES/picked show SELECTED-ITEM SELECTED-TYPE/text: to-string type? FILE-NAMES/picked show SELECTED-TYPE ] view layout [ vh2 "File List:" ;; Code in question: FILE-NAMES: text-list font [name: font-fixed] data read %. ;; Is there an attribute I can use to start the text-list scroller ;; somewhere besides the beginning? ;; para [scroll: 0x0] ;; no syntax error but no effect ;; para [scroll: 10x10] ;; messes up the data--bunches of hyphens ;; para [scroll/y 10] ;; no syntax error but no effect ;; para [scroll/y: 10] ;; messes up the data--bunches of hyphens ;; scroll/y 10 ;; invalid syntax ;; para/scroll/y 10 ;; invalid syntax button "Show selected" [SHOW-SELECTED] SELECTED-ITEM: text 200x200 "" across label "FILE-NAMES/picked is of type: " SELECTED-TYPE: text 100x20 "" ]
Thank you. I have captured that solution in my little demo so I won't forget it. This episode shows three things that amaze me about the whole REBOL scene. One: That REBOL can do some of the stuff it does. Two: How you people (who know REBOL so well) can find out this stuff. Three: That I will stare at that ONE line of code for hours, reread the View documentation, and, probably, still be unable to understand that ONE line of code. Sometimes I wonder if REBOL is too sophisticated for its own good. I remember having an easier time with IBM 370 assembler.
Why don't you use the do command? Look at this: Code: view layout [ vh2 "File List:" ;; Code in question: FILE-NAMES: text-list font [name: font-fixed] data read %. button "Show selected" [SHOW-SELECTED] SELECTED-ITEM: text 200x200 "" across label "FILE-NAMES/picked is of type: " SELECTED-TYPE: text 100x20 "" do [ file-names/picked: file-names/data/3 show file-names ] ]
Thank you. I did not know I could put a "do" in a layout like that. Your idea does indeed highlight file-names/data/3, and if you change the "3" to, for example, "20," it highlights file-name/data/20, BUT, it does not move the list down to item 20 if item 20 is not initially visible in the text-list. As for the particular problem I am working on, I am thinking now of moving to a web-browser interface with my "text list" being an html page generated by a REBOL CGI program. I am really liking the web browser as a "GUI" because of the ease of deployment; I sit at my desk and write programs, and everyone can use them immediately without any "installation."
