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Answered

afterPlace eventListeners - ungroup snippet error

Forum|Forum|3 years ago
January 11, 2023
4 replies
2323 views

Hi,

I would like to ungroup a snippet after dropping it in the page, unfortunately I have an error

"Error: Unable to remove the target of an active script event."

My code :

var myListener = app.eventListeners.add("afterPlace", doThisWhenAfterPlace, false);

function doThisWhenAfterPlace(myEvent) {
    mySel = app.selection;
	try{
		mySel[0].ungroup();
	}catch(e) {
		alert(e)
	}
}

If anyone has an idea how to solve this problem... 😉

Regards

Scripting

This topic has been closed for replies.

Correct answer 琥珀猫太郎

How about using idleTasks together?

#targetengine "session"
var myTargetIDArray = [];
if (app.eventListeners.itemByName("myAfterplace").isValid) {
    app.eventListeners.itemByName("myAfterplace").remove();
}
app.eventListeners.add("afterPlace", function (myEvent) {
    if (myEvent.target instanceof Group) {
        myTargetIDArray.push(myEvent.target.id);
        app.idleTasks.add({name:"myIdleTask", sleep:10})
        .addEventListener(IdleEvent.ON_IDLE, function () {
            for each (myTargetID in myTargetIDArray) {
                if (app.activeDocument.groups.itemByID(myTargetID).isValid) { 
                    app.activeDocument.groups.itemByID(myTargetID).ungroup();
                }
            }
            myTargetIDArray = [];
            app.idleTasks.itemByName("myIdleTask").remove();
        });
    }
 }).name = "myAfterplace";

L

Laubender

Community Expert

Hi @琥珀猫太郎 ,

thank you very much for this suggestion!

Very clever and it works very well!

My tests are done with InDesign 2023 version 18.1 on Windows 10.

Also, your:

app.activeDocument.groups.itemByID(myTargetID).isValid

will prevent the script to throw an error if a snippet of a group is placed to an insertion point.

Thanks,
Uwe Laubender
( Adobe Community Expert )

琥

琥珀猫太郎

Inspiring

Laubender
>Also, your:
app.activeDocument.groups.itemByID(myTargetID).isValid
will prevent the script to throw an error if a snippet of a group is placed to an insertion point.

I had no intention of doing so. It was based on the assumption that multiple Snippets would be placed, but the result was good.

I thought it was necessary to initialize the array that remembers the placed Group, so I modified the Script.

琥

琥珀猫太郎Correct answer

Inspiring

How about using idleTasks together?

#targetengine "session"
var myTargetIDArray = [];
if (app.eventListeners.itemByName("myAfterplace").isValid) {
    app.eventListeners.itemByName("myAfterplace").remove();
}
app.eventListeners.add("afterPlace", function (myEvent) {
    if (myEvent.target instanceof Group) {
        myTargetIDArray.push(myEvent.target.id);
        app.idleTasks.add({name:"myIdleTask", sleep:10})
        .addEventListener(IdleEvent.ON_IDLE, function () {
            for each (myTargetID in myTargetIDArray) {
                if (app.activeDocument.groups.itemByID(myTargetID).isValid) { 
                    app.activeDocument.groups.itemByID(myTargetID).ungroup();
                }
            }
            myTargetIDArray = [];
            app.idleTasks.itemByName("myIdleTask").remove();
        });
    }
 }).name = "myAfterplace";

m1b

Community Expert

Very nice! 🙂

琥

琥珀猫太郎

Inspiring

Even if we speak different languages, it's wonderful that we can understand each other through Script.

rob day

Community Expert

Hi @Ronald63 , try adding #targetengine "session" at the top of the script. Also, drag and dropping from a library is not a place command, you might need afterSelectionChange?

#targetengine "session"
var myListener = app.eventListeners.add("afterSelectionChanged", doThisWhenAfterPlace, false);

function doThisWhenAfterPlace(myEvent) {
    mySel = app.selection;
	try{
		mySel[0].ungroup();
	}catch(e) {
		alert(e)
	}
    //myListener.remove()
}

?

R

Ronald63Author

Legend

Hi Rob,

I try try adding #targetengine "session" but same error
I don't use drag & drop from a library, I use placeGuns.loadPlaceGun() method
unfortunately I already use after SelectionChanged for something else

Thanks for your help
Ronald

rob day

Community Expert

Are you running the script from the InDesign Scripts panel or your code editor? Also, if you are not removing the listener(s) with code, try restarting ID.

This alert works for me from the panel:

#targetengine "session"
var myListener = app.eventListeners.add("afterPlace", doThisWhenAfterPlace, false);

function doThisWhenAfterPlace(myEvent) {
    alert("Place " + myEvent.target)
    /* mySel = app.selection;
	try{
		mySel[0].ungroup();
	}catch(e) {
		alert(e)
	} */
    myListener.remove()
}