brozzler/umbra/behaviors.d/simpleclicks.js.in

var umbraEndConditionTarget;

var umbraAboveBelowOrOnScreen = function(e) {
	var eTop = e.getBoundingClientRect().top;
	if (eTop < window.scrollY) {
		return -1; // above
	} else if (eTop > window.scrollY + window.innerHeight) {
		return 1; // below
	} else {
		return 0; // on screen
	}
}

var umbraSimpleScrollsAndClicksBehavior = {
	IDLE_TIMEOUT_SEC : 10,
	idleSince : null,
	alreadyClicked : {},

	intervalFunc : function() {
		var clickedSomething = false;
		var somethingLeftBelow = false;
		var somethingLeftAbove = false;
		var cssSelector = "${click_css_selector}";
		var cssSelectorClickEndCondition = "${click_css_selector_end_condition}";
		var cssSelectorClickComputedStyleEndCondition = "${click_css_selector_computed_style_end_condition}";

		//fixup cssSelectorClickEndCondition value if this argument has not been set in behaviors.yaml
		if (cssSelectorClickEndCondition == "") {
			cssSelectorClickEndCondition = "#uniq-selector-for-nothing";			
		}
		
		var iframes = document.querySelectorAll("iframe");
		var documents = Array(iframes.length + 1);
		documents[0] = document;
		
		for (var i = 0; i < iframes.length; i++) {
			documents[i+1] = iframes[i].contentWindow.document;
		}

		for (var j = 0; j < documents.length; j++) {

			var clickTargets = documents[j].querySelectorAll(cssSelector);
			umbraEndConditionTarget = documents[j].querySelector(cssSelectorClickEndCondition);

			if (umbraEndConditionTarget) {
				if (cssSelectorClickComputedStyleEndCondition != "") {
					if (umbraCheckSelectorEndCondition(cssSelectorClickComputedStyleEndCondition)) {
						return;
					}
				}
				else {
					return;
				}
			}
			
			for ( var i = 0; i < clickTargets.length; i++) {
				if (clickTargets[i].umbraClicked && cssSelectorClickEndCondition == "#uniq-selector-for-nothing") {
					//has already been clicked so no need to check again unless there is a click end condition value set
					//for this url in behaviors.yaml. then we keep clicking until the end condition is met
					continue;
				}

				var where = umbraAboveBelowOrOnScreen(clickTargets[i]);

				if (where == 0) {
					console.log("clicking on " + clickTargets[i].outerHTML);
					// do mouse over event on click target
					// since some urls are requsted only on
					// this event - see
					// https://webarchive.jira.com/browse/AITFIVE-451
					var mouseOverEvent = document.createEvent('Events');
					mouseOverEvent.initEvent("mouseover",true, false);
					clickTargets[i].dispatchEvent(mouseOverEvent);
					clickTargets[i].click();
					clickedSomething = true;
					this.idleSince = null;
					clickTargets[i].umbraClicked = true;

					break; //break from clickTargets loop, but not from iframe loop
				} else if (where > 0) {
					somethingLeftBelow = true;
				} else if (where < 0) {
					somethingLeftAbove = true;
				}
			}
		}

		if (!clickedSomething) {
			if (somethingLeftAbove) {
				console.log("scrolling UP because everything on this screen has been clicked but we missed something above");
				window.scrollBy(0, -500);
				this.idleSince = null;
			} else if (somethingLeftBelow) {
				console.log("scrolling because everything on this screen has been clicked but there's more below document.body.clientHeight="
								+ document.body.clientHeight);
				window.scrollBy(0, 200);
				this.idleSince = null;
			} else if (window.scrollY + window.innerHeight < document.documentElement.scrollHeight) {
				console.log("scrolling because we're not to the bottom yet document.body.clientHeight="
								+ document.body.clientHeight);
				window.scrollBy(0, 200);
				this.idleSince = null;
			} else if (this.idleSince == null) {
				this.idleSince = Date.now();
			}
		}

		if (!this.idleSince) {
			this.idleSince = Date.now();
		}
	},

	start : function() {
		var that = this;
		this.intervalId = setInterval(function() {
			that.intervalFunc()
		}, 250);
	},

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

var umbraCheckSelectorEndCondition = function(condition) {
	if (!condition || condition == "") return;

	return eval("var dynamicFunction = new Function('return function testCondition(target){ if (!target) return false; var computedStyle=window.getComputedStyle(target); return computedStyle." + condition + " }' )(); dynamicFunction(umbraEndConditionTarget);");
}

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

umbraSimpleScrollsAndClicksBehavior.start();