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An error was thrown when selecting a layer using jsfl

Participant ,
Aug 20, 2023 Aug 20, 2023

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Select a column of frames on the timeline, and then execute the command to select these layers, the following code will throw“Error: setSelectedLayers:Invalid parameter number 1”,
How can it be improved, and where is it wrong?

微信图片_20230820210322.png

 

var selectedFrames = fl.getDocumentDOM().getTimeline().getSelectedFrames();
var selectedLayers = [];
for (var i = 0; i < selectedFrames.length; i++) {
	var currFrame = selectedFrames[i];
	var currLayer = currFrame.layer;
	if (selectedLayers.indexOf(currLayer) === -1) {
		selectedLayers.push(currLayer);
	}
}
if (selectedLayers.length > 0) {
	fl.getDocumentDOM().getTimeline().setSelectedLayers(selectedLayers);
}

 

 

 

 

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correct answers 1 Correct answer

Community Beginner , Aug 20, 2023 Aug 20, 2023

The problem is that you are not using functions correctly.
The "selectedFrames" function returns, as the documentation says: "An array containing 3n integers, where n is the number of selected regions. The first integer in each group is the layer
index, the second integer is the start frame of the beginning of the selection, and the third integer specifies the ending
frame of that selection range", array does not contain frames, and frames do not contain a "layer" property.
Also, the "setSelectedLay

...

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Community Expert ,
Aug 20, 2023 Aug 20, 2023

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setSelectedLayers selects one layer at a time.  using the 2nd parameter you can can select more than one, but you select one at a time. ie, you want to loop through the selected layers.

 

 

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Participant ,
Aug 20, 2023 Aug 20, 2023

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Thanks! I'm still learning, thanks for pointing out the problem,

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Community Expert ,
Aug 20, 2023 Aug 20, 2023

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you're welcome.

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Community Beginner ,
Aug 20, 2023 Aug 20, 2023

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The problem is that you are not using functions correctly.
The "selectedFrames" function returns, as the documentation says: "An array containing 3n integers, where n is the number of selected regions. The first integer in each group is the layer
index, the second integer is the start frame of the beginning of the selection, and the third integer specifies the ending
frame of that selection range", array does not contain frames, and frames do not contain a "layer" property.
Also, the "setSelectedLayers" function takes as the first argument the index of the desired layer to be selected.
Here is the correct code

var document = fl.getDocumentDOM();
var timeline = document.getTimeline();
var layers = timeline.layers;

var selectedFrames = timeline.getSelectedFrames();

for (var i = 0; i < selectedFrames.length; i += 3) {
	var [layerIndex, rangeBegin, rangeEnd] = selectedFrames.slice(i, i + 3);

	timeline.setSelectedLayers(layerIndex, i == 0 ? true : false);
}

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Participant ,
Aug 20, 2023 Aug 20, 2023

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You are right, thank you very much for the detailed explanation

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