h5p-memory-game/timer.js

56 lines
1.4 KiB
JavaScript

(function (MemoryGame, Timer) {
/**
* Adapter between memory game and H5P.Timer
*
* @class H5P.MemoryGame.Timer
* @extends H5P.Timer
* @param {Element} element
*/
MemoryGame.Timer = function (element) {
/** @alias H5P.MemoryGame.Timer# */
var self = this;
// Initialize event inheritance
Timer.call(self, 100);
/** @private {string} */
var naturalState = element.innerText;
/**
* Set up callback for time updates.
* Formats time stamp for humans.
*
* @private
*/
var update = function () {
var time = self.getTime();
var minutes = Timer.extractTimeElement(time, 'minutes');
var seconds = Timer.extractTimeElement(time, 'seconds') % 60;
// Update duration attribute
element.setAttribute('datetime', 'PT' + minutes + 'M' + seconds + 'S');
// Add leading zero
if (seconds < 10) {
seconds = '0' + seconds;
}
element.innerText = minutes + ':' + seconds;
};
// Setup default behavior
self.notify('every_tenth_second', update);
self.on('reset', function () {
element.innerText = naturalState;
self.notify('every_tenth_second', update);
});
};
// Inheritance
MemoryGame.Timer.prototype = Object.create(Timer.prototype);
MemoryGame.Timer.prototype.constructor = MemoryGame.Timer;
})(H5P.MemoryGame, H5P.Timer);