@Stephen Marsh, this is a recursive function. At the moment, saving the active layer and restoring the selection occurs every time it is called (for all nested groups), which seems redundant. You need to move these commands outside the function.
Thank you! You are of course correct. I wanted to keep it all in the function and didn't think about that!
I'll fix up the previous code and look into implementing your layer re-selection code.
1. Does not affect the visibility of layers
2. Expands all groups, including empty ones
3. Restores the selection of layers
4. Fast as possible
5. Not compatible with old versions of PS (seemingly less CC 2017) due to the lack of properties 'hasBackgroundLayer' and 'targetLayersIDs' (can be adapted)
#target photoshop
activeDocument.suspendHistory('Expand all layerSets', 'openAllLayerSets()')
function openAllLayerSets() {
var lr = new AM('layer'),
doc = new AM('document'),
currentSelection = doc.getProperty('targetLayersIDs'),
layers = expandGroups(getLayersCollection());
if (layers.length) {
doc.selectLayers(layers)
doc.deleteLayers(layers)
}
if (currentSelection.count) {
var s = [];
for (var i = 0; i < currentSelection.count; i++)
s.push(currentSelection.getReference(i).getIdentifier())
doc.selectLayers(s)
} else doc.selectNoLayers()
function expandGroups(layers, toDelete) {
toDelete = toDelete ? toDelete : [];
for (var a in layers) {
if (layers[a].layerKind == 7) {
if (layers[a].length) {
lr.selectLayers([layers[a][0].id])
expandGroups(layers[a], toDelete)
}
else {
lr.add()
lr.moveLayer(lr.getProperty('itemIndex', layers[a].id) - 2)
toDelete.push(lr.getProperty('layerID'))
}
}
}
return toDelete
}
function getLayersCollection() {
var doc = new AM('document'),
lr = new AM('layer'),
indexFrom = doc.getProperty('hasBackgroundLayer') ? 0 : 1,
indexTo = doc.getProperty('numberOfLayers');
return layersCollection(indexFrom, indexTo)
function layersCollection(from, to, parentItem, group) {
parentItem = parentItem ? parentItem : [];
for (var i = from; i <= to; i++) {
var layerSection = lr.getProperty('layerSection', i, true).value;
if (layerSection == 'layerSectionEnd') {
i = layersCollection(i + 1, to, [], parentItem)
continue;
}
var properties = {};
properties.id = lr.getProperty('layerID', i, true)
properties.visible = lr.getProperty('visible', i, true)
properties.layerKind = lr.getProperty('layerKind', i, true)
if (layerSection == 'layerSectionStart') {
for (o in properties) { parentItem[o] = properties[o] }
group.push(parentItem);
return i;
} else {
parentItem.push(properties)
}
}
return parentItem
}
}
function AM(target, order) {
var s2t = stringIDToTypeID,
t2s = typeIDToStringID;
target = target ? s2t(target) : null;
this.getProperty = function (property, id, idxMode) {
property = s2t(property);
(r = new ActionReference()).putProperty(s2t('property'), property);
id != undefined ? (idxMode ? r.putIndex(target, id) : r.putIdentifier(target, id)) :
r.putEnumerated(target, s2t('ordinal'), order ? s2t(order) : s2t('targetEnum'));
return getDescValue(executeActionGet(r), property)
}
this.selectLayers = function (IDList) {
var r = new ActionReference()
for (var i = 0; i < IDList.length; i++) {
r.putIdentifier(s2t("layer"), IDList[i])
}
(d = new ActionDescriptor()).putReference(s2t("target"), r)
d.putBoolean(s2t("makeVisible"), false)
executeAction(s2t("select"), d, DialogModes.NO)
}
this.add = function () {
(r = new ActionReference()).putClass(target);
(d = new ActionDescriptor()).putReference(s2t("null"), r);
executeAction(s2t("make"), d, DialogModes.NO);
}
this.moveLayer = function (to) {
(r = new ActionReference()).putEnumerated(s2t("layer"), s2t('ordinal'), s2t('targetEnum'));
(d = new ActionDescriptor()).putReference(s2t('null'), r);
(r1 = new ActionReference()).putIndex(s2t('layer'), to);
d.putReference(s2t('to'), r1);
executeAction(s2t('move'), d, DialogModes.NO);
}
this.selectNoLayers = function () {
(r = new ActionReference()).putEnumerated(s2t("layer"), s2t('ordinal'), s2t('targetEnum'));
(d = new ActionDescriptor()).putReference(s2t('target'), r);
executeAction(s2t('selectNoLayers'), d, DialogModes.NO);
}
this.deleteLayers = function (IDList) {
var r = new ActionReference()
for (var i = 0; i < IDList.length; i++) {
r.putIdentifier(s2t("layer"), IDList[i])
}
(d = new ActionDescriptor()).putReference(s2t("target"), r)
executeAction(s2t("delete"), d, DialogModes.NO)
}
function getDescValue(d, p) {
switch (d.getType(p)) {
case DescValueType.OBJECTTYPE: return { type: t2s(d.getObjectType(p)), value: d.getObjectValue(p) };
case DescValueType.LISTTYPE: return d.getList(p);
case DescValueType.REFERENCETYPE: return d.getReference(p);
case DescValueType.BOOLEANTYPE: return d.getBoolean(p);
case DescValueType.STRINGTYPE: return d.getString(p);
case DescValueType.INTEGERTYPE: return d.getInteger(p);
case DescValueType.LARGEINTEGERTYPE: return d.getLargeInteger(p);
case DescValueType.DOUBLETYPE: return d.getDouble(p);
case DescValueType.ALIASTYPE: return d.getPath(p);
case DescValueType.CLASSTYPE: return d.getClass(p);
case DescValueType.UNITDOUBLE: return (d.getUnitDoubleValue(p));
case DescValueType.ENUMERATEDTYPE: return { type: t2s(d.getEnumerationType(p)), value: t2s(d.getEnumerationValue(p)) };
default: break;
};
}
}
}
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