How to expand the folder via applescript?

Question

Dear apple experts,
How to expand the folder via applescript?
Manually we are using command + option + right arrow, but how we handle this in applescript?
Thanks in advance,
Velladurai.G

Answer 1

Hello
Finder's container's "expanded" and "completely expanded" properties have long been marked "NOT AVAILABLE YET" under OSX:
Finder.sdef > Containers and Folders suite
container n [inh. item] : An item that contains other items
    elements
        contains items, containers, folders, files, alias files, application files, document files, internet location files, clippings, packages.
    properties
        entire contents (specifier, r/o) : the entire contents of the container, including the contents of its children
        expandable (boolean, r/o) : (NOT AVAILABLE YET) Is the container capable of being expanded as an outline?
        expanded (boolean) : (NOT AVAILABLE YET) Is the container opened as an outline? (can only be set for containers viewed as lists)
        completely expanded (boolean) : (NOT AVAILABLE YET) Are the container and all of its children opened as outlines? (can only be set for containers viewed as lists)
        container window (specifier, r/o) : the container window for this folder
A way to expand a given folder is to use keystroke command of System Events to invoke the keyboard shortcut in Finder. Something like the following script.
  kLeftArrowCharCode            = 28,
  kRightArrowCharCode           = 29,
  kUpArrowCharCode              = 30,
  kDownArrowCharCode            = 31,
--set f to (path to downloads folder from user domain) -- target folder e.g.
set f to (choose folder)
tell application "Finder"
    reveal f
    tell Finder window 1
        set cv to current view
        if cv = column view then return -- do nothing
        if cv = icon view then set current view to list view
    end tell
    my _keystroke(it, character id 29, {option down, command down}, 0.2)
end tell
on _keystroke(_app, _key, _modifiers, _delay)
        reference _app : application reference
        string _key : character(s) to be keystroked [1]
        list _modifiers : list of modifier key to be pressed; enumerations are
                command down
                option down
                shift down
                control down
        number _delay : post-delay amount [sec]
        [1] Character must be present on the current keyboard layout. Otherwise, it is replaced by 'a'.
    tell _app to activate
    tell application "System Events"
        tell (process 1 whose bundle identifier = (_app's id))
            keystroke _key using _modifiers
        end tell
    end tell
    if _delay > 0 then delay _delay
end _keystroke
Regards,
H