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Enhancement to allow embedded soundcloud audio files to be detected

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This commit is contained in:
Hunter Stern 2014-07-24 16:44:05 -07:00
parent e7e82aa913
commit 80f3a4a067
1 changed files with 93 additions and 6 deletions
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99
umbra/behaviors.d/default.js
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@ -5,18 +5,105 @@
// Scrolls to the bottom of the page. That's it at the moment.
//
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 umbraState = {'idleSince':null};
var umbraAlreadyClicked = {};
var UMBRA_IFRAME_SOUNDCLOUD_EMBEDDED_SELECTOR = "iframe[src^='https://w.soundcloud.com/player']";
var UMBRA_THINGS_TO_CLICK_SOUNDCLOUD_EMBEDDED_SELECTOR = "button.playButton";
var umbraFinished = false;
var umbraIntervalFunc = function() {
var needToScroll = (window.scrollY + window.innerHeight < document.documentElement.scrollHeight);
// console.log('intervalFunc umbraState.idleSince=' + umbraState.idleSince + ' needToScroll=' + needToScroll + ' window.scrollY=' + window.scrollY + ' window.innerHeight=' + window.innerHeight + ' document.documentElement.scrollHeight=' + document.documentElement.scrollHeight);
if (needToScroll) {
window.scrollBy(0, 200);
umbraState.idleSince = null;
} else if (umbraState.idleSince == null) {
var umbraSoundCloudEmbeddedElements = getUmbraSoundCloudEmbeddedElements();
var clickedSomething = false;
var somethingLeftBelow = false;
var somethingLeftAbove = false;
var missedAbove = 0;
for (var i = 0; i < umbraSoundCloudEmbeddedElements.length; i++) {
var targetId = umbraSoundCloudEmbeddedElements[i].id;
var target = umbraSoundCloudEmbeddedElements[i].target;
if (!(targetId in umbraAlreadyClicked)) {
var where = umbraAboveBelowOrOnScreen(target);
if (where == 0) { // on screen
// var pos = target.getBoundingClientRect().top;
// window.scrollTo(0, target.getBoundingClientRect().top - 100);
console.log("clicking at " + target.getBoundingClientRect().top + " on " + target.outerHTML);
if (target.click != undefined) {
target.click();
}
umbraAlreadyClicked[targetId] = true;
clickedSomething = true;
umbraState.idleSince = null;
break;
} 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);
umbraState.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);
umbraState.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);
umbraState.idleSince = null;
} else if (umbraState.idleSince == null) {
umbraState.idleSince = Date.now();
}
}
if (umbraState.idleSince == null) {
umbraState.idleSince = Date.now();
}
}
//try to detect sound cloud "Play" buttons and return them as targets for clicking
var getUmbraSoundCloudEmbeddedElements = function() {
var soundCloudEmbeddedElements = [];
var id = 0;
[].forEach.call(document.querySelectorAll(UMBRA_IFRAME_SOUNDCLOUD_EMBEDDED_SELECTOR),
function fn(elem){
if (elem.src.indexOf("auto_play=false") != -1) {
var button = elem.contentWindow.document.body.querySelectorAll(UMBRA_THINGS_TO_CLICK_SOUNDCLOUD_EMBEDDED_SELECTOR);
//use the iframe's src attribute as the key to the sound cloud player button. assumption is that each iframe created by the sound cloud widget
//contains only a single unique audio file on a given page
if (button && button.length > 0) {
//get the Element from the NodeList
soundCloudEmbeddedElements.push({"id" : elem.src, "target" : button.item(0)});
id++;
}
}
}
);
return soundCloudEmbeddedElements;
}
// If we haven't had anything to do (scrolled, clicked, etc) in this amount of