initial import

This commit is contained in:
Ilya Grigorik
2014-03-02 14:44:20 -08:00
commit 2965ec345d
9 changed files with 176 additions and 0 deletions

106
inject.js Normal file
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chrome.extension.sendMessage({}, function(response) {
var readyStateCheckInterval = setInterval(function() {
if (document.readyState === "complete") {
clearInterval(readyStateCheckInterval);
var tc = tc || {};
tc.videoController = function(target) {
this.video = target;
this.initializeControls();
this.speedIndicator.textContent = this.getSpeed();
this.video.addEventListener('ratechange', function(event) {
this.speedIndicator.textContent = this.getSpeed();
}.bind(this));
};
tc.videoController.prototype.getSpeed = function() {
return parseFloat(this.video.playbackRate).toFixed(2);
}
tc.videoController.prototype.remove = function() {
this.parentElement.removeChild(this);
}
tc.videoController.prototype.initializeControls = function() {
var fragment = document.createDocumentFragment();
var container = document.createElement('div');
var speedIndicator = document.createElement('span');
var controls = document.createElement('span');
var fasterButton = document.createElement('button');
var slowerButton = document.createElement('button');
var rewindButton = document.createElement('button');
rewindButton.innerHTML = '«';
fasterButton.textContent = '+';
slowerButton.textContent = '-';
controls.appendChild(rewindButton);
controls.appendChild(slowerButton);
controls.appendChild(fasterButton);
container.appendChild(speedIndicator);
container.appendChild(controls);
container.classList.add('tc-videoController');
controls.classList.add('tc-controls');
fragment.appendChild(container);
this.video.parentElement.insertBefore(fragment, this.video);
this.video.classList.add('tc-videoHost');
this.speedIndicator = speedIndicator;
container.addEventListener('click', function(e) {
if (e.target === slowerButton) { runAction('slower') }
else if (e.target === fasterButton) { runAction('faster') }
else if (e.target === rewindButton) { runAction('rewind') }
else {
container.nextSibling.classList.add("vc-cancelled")
container.remove();
}
e.preventDefault();
e.stopPropagation();
}, true);
}
function runAction(action) {
var videoTags = document.getElementsByTagName('video');
videoTags.forEach = Array.prototype.forEach;
videoTags.forEach(function(v) {
if (!v.paused && !v.classList.contains("vc-cancelled")) {
if (action === 'rewind') {
v.playbackRate -= 0.20;
v.currentTime -= 10;
} else if (action === 'faster') { v.playbackRate += 0.10 }
else if (action === 'slower') { v.playbackRate -= 0.10 }
}
});
}
document.addEventListener('keydown', function(event) {
if (event.keyCode == 65) { runAction('rewind') } // A
else if (event.keyCode == 68) { runAction('faster') } // D
else if (event.keyCode == 83) { runAction('slower') } // S
return false;
}, true);
document.addEventListener('DOMNodeInserted', function(event) {
var node = event.target || null;
if (node && node.nodeName === 'VIDEO') {
new tc.videoController(node);
}
});
var videoTags = document.getElementsByTagName('video');
videoTags.forEach = Array.prototype.forEach;
videoTags.forEach(function(video) {
var control = new tc.videoController(video);
});
}
}, 10);
});