ProximaEntertainment/plyr
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Added support for passive event listeners

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This commit is contained in:
Sam Potts 2017-05-08 23:07:19 +10:00
parent 279fee3595
commit 408cfe5b97
2 changed files with 71 additions and 25 deletions
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4
dist/plyr.js vendored
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File diff suppressed because one or more lines are too long

92
src/js/plyr.js
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@ -671,52 +671,79 @@
},
// Bind along with custom handler
proxy: function(element, eventName, customListener, defaultListener, useCapture) {
proxy: function(element, eventName, customListener, defaultListener, passive, capture) {
utils.on(element, eventName, function(event) {
if (customListener) {
customListener.apply(element, [event]);
}
defaultListener.apply(element, [event]);
}, useCapture);
}, passive, capture);
},
// Toggle event listener
toggleListener: function(elements, events, callback, toggle, useCapture) {
var eventList = events.split(' ');
toggleListener: function(elements, events, callback, toggle, passive, capture) {
events = events.split(' ');
// Whether the listener is a capturing listener or not
// Default to false
if (!is.boolean(useCapture)) {
useCapture = false;
if (!is.boolean(capture)) {
capture = false;
}
// Whether the listener can be passive (i.e. default never prevented)
// Default to true
if (!is.boolean(passive)) {
passive = true;
}
// If a nodelist is passed, call itself on each node
if (elements instanceof NodeList) {
for (var x = 0; x < elements.length; x++) {
if (elements[x] instanceof Node) {
utils.toggleListener(elements[x], arguments[1], arguments[2], arguments[3]);
}
// Convert arguments to Array
// https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Functions/arguments
var args = arguments.length === 1 ? [arguments[0]] : Array.apply(null, arguments);
// Remove the first argument (elements) as we replace it
args.shift();
// Create listener for each node
[].forEach.call(elements, function(element) {
if (element instanceof Node) {
utils.toggleListener.apply(null, [element].concat(args));
}
});
return;
}
// If a single node is passed, bind the event listener
for (var i = 0; i < eventList.length; i++) {
elements[toggle ? 'addEventListener' : 'removeEventListener'](eventList[i], callback, useCapture);
// Build options
// Default to just capture boolean
var options = capture;
// If passive events listeners are supported
if (support.passiveListeners) {
options = {
passive: passive,
capture: capture
};
}
// If a single node is passed, bind the event listener
events.forEach(function(event) {
elements[toggle ? 'addEventListener' : 'removeEventListener'](event, callback, options);
});
},
// Bind event handler
on: function(element, events, callback, useCapture) {
on: function(element, events, callback, passive, capture) {
if (!is.undefined(element)) {
utils.toggleListener(element, events, callback, true, useCapture);
utils.toggleListener(element, events, callback, true, passive, capture);
}
},
// Unbind event handler
off: function(element, events, callback, useCapture) {
off: function(element, events, callback, passive, capture) {
if (!is.undefined(element)) {
utils.toggleListener(element, events, callback, false, useCapture);
utils.toggleListener(element, events, callback, false, passive, capture);
}
},
@ -989,6 +1016,24 @@
// Check for textTracks support
textTracks: (function() {
return 'textTracks' in document.createElement('video');
})(),
// Check for passive event listener support
// https://github.com/WICG/EventListenerOptions/blob/gh-pages/explainer.md
// https://www.youtube.com/watch?v=NPM6172J22g
passiveListeners: (function() {
// Test via a getter in the options object to see if the passive property is accessed
var supported = false;
try {
var options = Object.defineProperty({}, 'passive', {
get: function() {
supported = true;
}
});
window.addEventListener("test", null, options);
} catch (e) {}
return supported;
})()
};
@ -1090,7 +1135,7 @@
}
// Bind the handler
utils.on(player.elements.container, 'keydown', checkFocus);
utils.on(player.elements.container, 'keydown', checkFocus, false);
}
// Add elements to HTML5 media (source, tracks, etc)
@ -3869,11 +3914,11 @@
if (count === 1 && utils.inArray(allowed, code) && (!is.htmlElement(focused) || !utils.matches(focused, config.selectors.editable))) {
handleKey(event);
}
});
}, false);
}
// Handle presses on focused
utils.on(player.elements.container, 'keydown keyup', handleKey);
utils.on(player.elements.container, 'keydown keyup', handleKey, false);
}
function handleKey(event) {
@ -4157,7 +4202,8 @@
});
// Focus in/out on controls
utils.on(player.elements.controls, 'focus blur', toggleControls, true);
// TODO: Check we need capture here
utils.on(player.elements.controls, 'focus blur', toggleControls, true, true);
}
// Mouse wheel for volume
@ -4195,7 +4241,7 @@
(direction === -1 && player.elements.media.volume > 0)) {
event.preventDefault();
}
});
}, false);
// Handle user exiting fullscreen by escaping etc
if (support.fullscreen) {
@ -4275,7 +4321,7 @@
if (config.disableContextMenu) {
utils.on(player.elements.media, 'contextmenu', function(event) {
event.preventDefault();
});
}, false);
}
// Proxy events to container