var umbraSimpleClicksBehavior = {
        IDLE_TIMEOUT_SEC: 10,
        idleSince: null,
        clickTargets: [],
        nextClickIndex: 0,

        intervalFunc: function() {
                if (this.nextClickIndex < this.clickTargets.length) {
                        this.clickTargets[this.nextClickIndex].click();
                        this.idleSince = null;
                        this.nextClickIndex++;
                } else if (this.idleSince == null) {
                        this.idleSince = Date.now();
                }
        },

        start: function() {
                this.clickTargets = document.querySelectorAll("${click_css_selector}");

                var that = this;
                this.intervalId = setInterval(function(){ that.intervalFunc() }, 50);
        },

        isFinished: function() {
                if (this.idleSince != null) {
                        var idleTimeMs = Date.now() - this.idleSince;
                        if (idleTimeMs / 1000 > this.IDLE_TIMEOUT_SEC) {
                                return true;
                        }
                }
                return false;
        },
};

// Called from outside of this script.
var umbraBehaviorFinished = function() { return umbraSimpleClicksBehavior.isFinished() };

umbraSimpleClicksBehavior.start();