#targetengine session

/*

Mutation Events sample of InDesign CC. Provably, It works up to CS5.

To run in InDesign with a document that has a few layers.

This listerner will catch change selected layer, release active layer and others will be locked automatically.

*/

if (app.activeDocument..eventListeners.itemByName('autoLockLayers')!=null)

app.activeDocument.eventListeners.itemByName('autoLockLayers').remove();

var listener = app.activeDocument.addEventListener (

MutationEvent.AFTER_ATTRIBUTE_CHANGED, layersControl);

listener.name = 'autoLockLayers';

function layersControl(ev) {

for (var i=0;i<app.activeDocument.layers.length;i++){

app.activeDocument.layers[i].locked=true;

}

app.activeDocument.layers.itemByName(ev.attributeValue.name).locked = false;

}

//remove event

//app.activeDocument.eventListeners.itemByName('autoLockLayers').remove();