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feat: add callbacks on experiment finish #2822

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feat: add callbacks on experiment finish #2822

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15 changes: 15 additions & 0 deletions packages/jspsych/src/JsPsych.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -82,6 +82,13 @@ export class JsPsych {
*/
private simulation_options;

/**
* Callbacks for extensions/plugins called on finish of the experiments.
* Can be used to cleanup stuff
*/

private onfinish_callbacks = new Array<() => void>();

// storing a single webaudio context to prevent problems with multiple inits
// of jsPsych
webaudio_context: AudioContext = null;
Expand Down Expand Up @@ -507,9 +514,17 @@ export class JsPsych {
this.doTrial(this.timeline.trial());
}

public addFinishExperimentCallback(callback: () => void) {
this.onfinish_callbacks.push(callback);
}

private finishExperiment() {
const finish_result = this.opts.on_finish(this.data.get());

for (var callback of this.onfinish_callbacks) {
callback();
}

const done_handler = () => {
if (typeof this.timeline.end_message !== "undefined") {
this.DOM_target.innerHTML = this.timeline.end_message;
Expand Down