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Merge pull request #36 from vonrosen/ari-4150

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Allow scrolling down a timeline in the facebook plugin so as to capture content in third party embedded timelines.
This commit is contained in:
Noah Levitt 2014-12-22 21:47:31 -08:00
commit ffd60d35e6
1 changed files with 59 additions and 1 deletions
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60
umbra/behaviors.d/facebook.js
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@ -22,10 +22,67 @@ var umbraAboveBelowOrOnScreen = function(e) {
// comments - 'a.UFIPagerLink > span, a.UFIPagerLink, span.UFIReplySocialSentenceLinkText'
var UMBRA_THINGS_TO_CLICK_SELECTOR = 'a[href^="/browse/likes"], *[rel="theater"]';
//div[class="phm pluginLikeboxStream"] = facebook widget embedded in 3rd party pages
var UMBRA_THINGS_TO_SCROLL_SELECTOR = 'div[class="phm pluginLikeboxStream"]';
var NUMBER_FAILED_SCROLL_ATTEMPTS_ON_THING_TO_SCROLL_BEFORE_STOP_SCROLLING = 5;
var umbraAlreadyClicked = {};
var umbraAlreadyScrolledThing = {};
var umbraScrolledThingFailedScrollAttempts = {};
var umbraState = {'idleSince':null,'expectingSomething':null,'bottomReachedScrollY':0};
var umbraIntervalFunc = function() {
var thingsToScroll = document.querySelectorAll(UMBRA_THINGS_TO_SCROLL_SELECTOR);
var everythingScrolled = true;
for (var i = 0; i < thingsToScroll.length; i++) {
var target = thingsToScroll[i];
if (!(target in umbraAlreadyScrolledThing)) {
everythingScrolled = false;
console.log("scrolling to " + target.scrollHeight + " on element with nodeName " + target.nodeName + " with id of " + target.id);
var lastScrollTop = target.scrollTop;
target.scrollTop = target.scrollHeight;
umbraState.idleSince = null;
if (target.scrollTop >= target.scrollHeight) {
umbraAlreadyScrolledThing[target] = true;
}
else if (target.scrollTop == lastScrollTop) {
if (umbraScrolledThingFailedScrollAttempts[target]) {
umbraScrolledThingFailedScrollAttempts[target]++;
}
else {
umbraScrolledThingFailedScrollAttempts[target] = 1;
}
if (umbraScrolledThingFailedScrollAttempts[target] >= NUMBER_FAILED_SCROLL_ATTEMPTS_ON_THING_TO_SCROLL_BEFORE_STOP_SCROLLING) {
umbraAlreadyScrolledThing[target] = true;
}
}
else {
//reset failed count on a successful scroll
umbraScrolledThingFailedScrollAttempts[target] = 0;
}
}
else {
console.log("done scrolling for element with nodeName " + target.nodeName + " with id of " + target.id)
}
umbraState.expectingSomething = null;
}
if (thingsToScroll && thingsToScroll.length > 0 && everythingScrolled) {
if (umbraState.idleSince == null) {
umbraState.idleSince = Date.now();
}
return;
}
var closeButtons = document.querySelectorAll('a[title="Close"], a.closeTheater');
for (var i = 0; i < closeButtons.length; i++) {
// XXX closeTheater buttons stick around in the dom after closing, clientWidth>0 is one way to check if they're visible
@ -75,7 +132,7 @@ var umbraIntervalFunc = function() {
}
}
}
if (window.scrollY > umbraState.bottomReachedScrollY) {
umbraState.bottomReachedScrollY = window.scrollY;
}
@ -105,6 +162,7 @@ var UMBRA_USER_ACTION_IDLE_TIMEOUT_SEC = 10;
// Called from outside of this script.
var umbraBehaviorFinished = function() {
if (umbraState.idleSince != null) {
var idleTimeMs = Date.now() - umbraState.idleSince;
if (idleTimeMs / 1000 > UMBRA_USER_ACTION_IDLE_TIMEOUT_SEC) {