9
Replies
Hi all,
I had a similar issue and it totally puzzled me. What I found is that when you change the currentVisibility of a graphicLayer, its specifier becomes instantly invalid! As a matter of fact, it seems that the Graphic container (e.g. myPDF) gets a new id 
so the whole chain is disabled: myPDF, myPDF.graphicLayerOptions, etc.
I have not AI installed at home, so I can't test my theory with actual files. Anyway, I believe this is a very special case where we need to use unresolved specifiers in order to recreate a valid access to the graphic object each time the state of a graphic layer is changed within. In other words, I recommend you do not use resolved arrays (myRectangle.allGraphics). Instead, try to re-access the element by its index from the collection myRectangle.graphics. Using indices rather than ids should work [remainder: a resolved specifier is based on ids.]
Of course my code should be refined if you have nested graphics (?) and/or nested graphic layers (?), but in basic situations this may be a good starting point. So, try something like this:
// =====================================
// YOUR SETTINGS
// =====================================
var ID_TO_AI_LAYERS = {
"ES": ["ES", "quote", "disegno"],
"EN": ["EN", "quote", "design"],
"FR": ["FR"],
/* etc.*/
},
TARGET_COLLECTION = 'rectangles';
// =====================================
// SYNCHRONIZE ID<->AI LAYERS
// =====================================
const EXTRA_CHAR = '\uE080';
var items = app.activeDocument[TARGET_COLLECTION],
i = items.length,
r, gx, j,
s, okNames, a,
t, j, k, v;
while( i-- )
{
// Name of the ID layer the current rectangle (r) belongs to
// ---
s = (r=items).itemLayer.name;
// Make sure that this layer is supported
// ---
if(! ID_TO_AI_LAYERS.hasOwnProperty(s) ) continue;
// Store the allowed AI layer names in a String (okNames)
// ---
okNames = EXTRA_CHAR + ID_TO_AI_LAYERS
.join(EXTRA_CHAR) + EXTRA_CHAR;// Consider only the direct graphic children of the current rectangle
// (We need unresolved specifiers here => gx remains a collection.)
// ---
gx = r.graphics;
j = gx.length;
while( j-- )
{
// Temporarily resolve the underlying graphic object (--> PDF)...
// ---
t = gx
.getElements()[0]; // ...in order to check whether t has graphic layers
// ---
if( !('graphicLayerOptions' in t) ) continue;
// Consider the names of the contained graphic layers
// ---
a = t.graphicLayerOptions.graphicLayers.everyItem().name;
k = a.length;
while( k-- )
{
s = a
; // Depending on a graphic layer name, do we want to show or hide it?
// ---
v = 0 <= okNames.indexOf(EXTRA_CHAR + s + EXTRA_CHAR);
// Now, the problem is to point out to the graphic layer although
// the parent graphic specifier may not be valid anymore!
// But gx
should work, as we re-access the element per index // (from the Graphics coll.)
// ---
t = gx
.graphicLayerOptions.graphicLayers.itemByName(s); // Hit the DOM *only* if a change is possible AND required
// ---
( ! t.isValid ) ||
( t.currentVisibility === v ) ||
( t.currentVisibility = v );
}
}
}
Note: turning enabledRedraw off is highly recommended during the process!
Hope that helps.
@+
Marc
AdChoices