photoshop-toggle-blendmode.js

gistfile1.txt

// store current layer of active document
var activeLayer = app.activeDocument.activeLayer;

function toggleAll(layer) {
    // determine state
    split = (layer.name).split(' ');
    if ('*working*' in split){
        // recover the mode from *working* layer name
        
        layer.blendMode = BlendMode[split[-1]]; 
        // reset name
        layer.name = split.slice(0,-3);
        toggleIsolate(layer);
    }
    else{
        // write blend mode (and other relevant data, you can extend this) to layer name
        mode = layer.blendMode
        layer.name += '*working* Prev: ' + mode;

        // set current blend mode to normal
        layer.blendMode = 'NORMAL';
        toggleIsolate(layer);
    }
};

function toggleIsolate(layer) {

    var desc = new ActionDescriptor();
    var list = new ActionList();
    var ref = new ActionReference();

    var idNull = charIDToTypeID( "null" );
    var idTglO = charIDToTypeID( "TglO" );
    var idLyr = charIDToTypeID( "Lyr " ); 
    var idShw = charIDToTypeID( "Shw " );

    ref.putName( idLyr, layer.name);
    list.putReference( ref);
    desc.putList(idNull, list );
    desc.putBoolean( idTglO, true );

    executeAction( idShw, desc, DialogModes.NO );
};

toggleAll(activeLayer);