Create a snapshot and return to snapshot, using Applescript?

Question

I'm just trying to create an applescript that will allow me to create a snapshot in my history and then later in the script select that history state/snapshot?

Muppet Mark · Accepted Answer

You should be able to do this using the DOM in AppleScript or JavaScript…

tell application "Adobe Photoshop CS5"

tell the current document

set hS to current history state

change mode to Lab -- do whatever your stuff is…

set current history state to hS

end tell

var doc = app.activeDocument;

var hS = doc.activeHistoryState;

doc.changeMode( ChangeMode.LAB );

app.refresh();

doc.activeHistoryState = hS;

Paul Riggott · Answer

I think you will need to call a javaScript to do this...

function createNamedSnapshot(name) {
    var desc = new ActionDescriptor();
        var ref = new ActionReference();
        ref.putClass( charIDToTypeID('SnpS') );
    desc.putReference( charIDToTypeID('null'), ref );
        var ref1 = new ActionReference();
        ref1.putProperty( charIDToTypeID('HstS'), charIDToTypeID('CrnH') );
    desc.putReference( cTID('From'), ref1 );
    desc.putString( charIDToTypeID('Nm  '), name );
    desc.putEnumerated( charIDToTypeID('Usng'), charIDToTypeID('HstS'), charIDToTypeID('FllD') );
    executeAction( charIDToTypeID('Mk  '), desc, DialogModes.NO );
};
function revertNamedSnapshot(name) {
    var desc = new ActionDescriptor();
        var ref = new ActionReference();
        ref.putName( charIDToTypeID('SnpS'), name );
    desc.putReference( charIDToTypeID('null'), ref );
    executeAction( charIDToTypeID('slct'), desc, DialogModes.NO );
};

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