Save layer state on close

[flaming1]

Hi

I have a relatively complicated form that is using buttons to show/hide multiple layers.

Everything is working well, but I am trying to find a way for the layer visibility state to be saved when the file is saved, so that when the PDF is next opened the layers are still in the same state.

Is this possible?

[Karl Heinz Kremer]

Glad that it worked out. It's always a good idea to start from scratch with a script that does not want to behave correctly. By making changes to something again and again, you may have modified something that is not obvious to spot.

[rossj39240088]

Hi,

When I save the document using this script it turns on all layers when I reopen?

Do I need to put layer names in the hidden drop down?

Thanks

[try67]

The state of the layers is not saved when you save the file. They will revert to their Init State when you open it.

The solution is either to change the initState property (note, that's not possible in Reader), or to save the states to something like a text field and then use a doc-level script to read the contents of that field and show/hide the layers based on it each time the file is opened.

[rossj39240088]

Hi,

That's what I've done. I've added the doc level script and a hidden drop down but as you can see from the pdf form attached, the layer states are not saving.

Any ideas?

WeTransfer

Thanks for your help

[Bernd Alheit]

Where does you show/hide layers?

[try67]

The way you did it doesn't make sense to me. It seems you're just setting all the layers that appear under LayerConfig as visible.

As that what you intended to do?

[rossj39240088]

Hi, I just followed the link here Turn layer on/off AND save layer state (Edit PDF)

I just want to retain the layer states when saving.

I'm still fairly new to Javascript so I apologies if I'm not making myself clear.

[Bernd Alheit]

Where does you change the layer states?

[rossj39240088]

There are various buttons on the form that change layer states. Here are the ones on Page1 highlighted in GREEN

[Bernd Alheit]

function restoreLayerConfig(doc) {

    var activeLayers = [];

    // get the items from the layerConfig dropdown control

    var f = this.getField("LayerConfig");

    if (f != null) {

        for (var i = 0; i < f.numItems; i++) {

            activeLayers.push(f.getItemAt(i));

        }

        var ocgArray = doc.getOCGs();

        for (var i = 0; i < ocgArray.length; i++) {

            ocgArray.state = isInArray(ocgArray.name, activeLayers);

            activeLayers.push(ocgArray.name);                                        // <= Remove this line!

        }

    }

}

[rossj39240088]

It's ok, I've managed to make it work. Thanks for everyone's help!