jiti-meet/modules/UI/prezi/PreziPlayer.js

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/* jshint -W101 */
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var __bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; };
PreziPlayer.API_VERSION = 1;
PreziPlayer.CURRENT_STEP = 'currentStep';
PreziPlayer.CURRENT_ANIMATION_STEP = 'currentAnimationStep';
PreziPlayer.CURRENT_OBJECT = 'currentObject';
PreziPlayer.STATUS_LOADING = 'loading';
PreziPlayer.STATUS_READY = 'ready';
PreziPlayer.STATUS_CONTENT_READY = 'contentready';
PreziPlayer.EVENT_CURRENT_STEP = "currentStepChange";
PreziPlayer.EVENT_CURRENT_ANIMATION_STEP = "currentAnimationStepChange";
PreziPlayer.EVENT_CURRENT_OBJECT = "currentObjectChange";
PreziPlayer.EVENT_STATUS = "statusChange";
PreziPlayer.EVENT_PLAYING = "isAutoPlayingChange";
PreziPlayer.EVENT_IS_MOVING = "isMovingChange";
PreziPlayer.domain = "https://prezi.com";
PreziPlayer.path = "/player/";
PreziPlayer.players = {};
PreziPlayer.binded_methods = ['changesHandler'];
PreziPlayer.createMultiplePlayers = function(optionArray){
for(var i=0; i<optionArray.length; i++) {
var optionSet = optionArray[i];
new PreziPlayer(optionSet.id, optionSet);
}
};
PreziPlayer.messageReceived = function(event){
var message, item, player;
try {
message = JSON.parse(event.data);
if (message.id && (player = PreziPlayer.players[message.id])) {
if (player.options.debug === true) {
if (console && console.log)
console.log('received', message);
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}
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if (message.type === "changes") {
player.changesHandler(message);
}
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for (var i = 0; i < player.callbacks.length; i++) {
item = player.callbacks[i];
if (item && message.type === item.event) {
item.callback(message);
}
}
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}
} catch (e) { }
};
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/*jshint -W004 */
function PreziPlayer(id, options) {
/*jshint +W004 */
var params, paramString = "", _this = this;
if (PreziPlayer.players[id]){
PreziPlayer.players[id].destroy();
}
for(var i=0; i<PreziPlayer.binded_methods.length; i++) {
var method_name = PreziPlayer.binded_methods[i];
_this[method_name] = __bind(_this[method_name], _this);
}
options = options || {};
this.options = options;
this.values = {'status': PreziPlayer.STATUS_LOADING};
this.values[PreziPlayer.CURRENT_STEP] = 0;
this.values[PreziPlayer.CURRENT_ANIMATION_STEP] = 0;
this.values[PreziPlayer.CURRENT_OBJECT] = null;
this.callbacks = [];
this.id = id;
this.embedTo = document.getElementById(id);
if (!this.embedTo) {
throw "The element id is not available.";
}
this.iframe = document.createElement('iframe');
params = [
{ name: 'oid', value: options.preziId },
{ name: 'explorable', value: options.explorable ? 1 : 0 },
{ name: 'controls', value: options.controls ? 1 : 0 }
];
for (i=0; i<params.length; i++) {
var param = params[i];
paramString += (i===0 ? "?" : "&") + param.name + "=" + param.value;
}
this.iframe.src = PreziPlayer.domain + PreziPlayer.path + paramString;
this.iframe.frameBorder = 0;
this.iframe.scrolling = "no";
this.iframe.width = options.width || 640;
this.iframe.height = options.height || 480;
this.embedTo.innerHTML = '';
// JITSI: IN CASE SOMETHING GOES WRONG.
try {
this.embedTo.appendChild(this.iframe);
}
catch (err) {
console.log("CATCH ERROR");
}
// JITSI: Increase interval from 200 to 500, which fixes prezi
// crashes for us.
this.initPollInterval = setInterval(function(){
_this.sendMessage({'action': 'init'});
}, 500);
PreziPlayer.players[id] = this;
}
PreziPlayer.prototype.changesHandler = function(message) {
var key, value, j, item;
if (this.initPollInterval) {
clearInterval(this.initPollInterval);
this.initPollInterval = false;
}
for (key in message.data) {
if (message.data.hasOwnProperty(key)){
value = message.data[key];
this.values[key] = value;
for (j=0; j<this.callbacks.length; j++) {
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item = this.callbacks[j];
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if (item && item.event === key + "Change"){
item.callback({type: item.event, value: value});
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}
}
}
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}
};
PreziPlayer.prototype.destroy = function() {
if (this.initPollInterval) {
clearInterval(this.initPollInterval);
this.initPollInterval = false;
}
this.embedTo.innerHTML = '';
};
PreziPlayer.prototype.sendMessage = function(message) {
if (this.options.debug === true) {
if (console && console.log) console.log('sent', message);
}
message.version = PreziPlayer.API_VERSION;
message.id = this.id;
return this.iframe.contentWindow.postMessage(JSON.stringify(message), '*');
};
PreziPlayer.prototype.nextStep = /* nextStep is DEPRECATED */
PreziPlayer.prototype.flyToNextStep = function() {
return this.sendMessage({
'action': 'present',
'data': ['moveToNextStep']
});
};
PreziPlayer.prototype.previousStep = /* previousStep is DEPRECATED */
PreziPlayer.prototype.flyToPreviousStep = function() {
return this.sendMessage({
'action': 'present',
'data': ['moveToPrevStep']
});
};
PreziPlayer.prototype.toStep = /* toStep is DEPRECATED */
PreziPlayer.prototype.flyToStep = function(step, animation_step) {
var obj = this;
// check animation_step
if (animation_step > 0 &&
obj.values.animationCountOnSteps &&
obj.values.animationCountOnSteps[step] <= animation_step) {
animation_step = obj.values.animationCountOnSteps[step];
}
// jump to animation steps by calling flyToNextStep()
function doAnimationSteps() {
if (obj.values.isMoving) {
setTimeout(doAnimationSteps, 100); // wait until the flight ends
return;
}
while (animation_step-- > 0) {
obj.flyToNextStep(); // do the animation steps
}
}
setTimeout(doAnimationSteps, 200); // 200ms is the internal "reporting" time
// jump to the step
return this.sendMessage({
'action': 'present',
'data': ['moveToStep', step]
});
};
PreziPlayer.prototype.toObject = /* toObject is DEPRECATED */
PreziPlayer.prototype.flyToObject = function(objectId) {
return this.sendMessage({
'action': 'present',
'data': ['moveToObject', objectId]
});
};
PreziPlayer.prototype.play = function(defaultDelay) {
return this.sendMessage({
'action': 'present',
'data': ['startAutoPlay', defaultDelay]
});
};
PreziPlayer.prototype.stop = function() {
return this.sendMessage({
'action': 'present',
'data': ['stopAutoPlay']
});
};
PreziPlayer.prototype.pause = function(defaultDelay) {
return this.sendMessage({
'action': 'present',
'data': ['pauseAutoPlay', defaultDelay]
});
};
PreziPlayer.prototype.getCurrentStep = function() {
return this.values.currentStep;
};
PreziPlayer.prototype.getCurrentAnimationStep = function() {
return this.values.currentAnimationStep;
};
PreziPlayer.prototype.getCurrentObject = function() {
return this.values.currentObject;
};
PreziPlayer.prototype.getStatus = function() {
return this.values.status;
};
PreziPlayer.prototype.isPlaying = function() {
return this.values.isAutoPlaying;
};
PreziPlayer.prototype.getStepCount = function() {
return this.values.stepCount;
};
PreziPlayer.prototype.getAnimationCountOnSteps = function() {
return this.values.animationCountOnSteps;
};
PreziPlayer.prototype.getTitle = function() {
return this.values.title;
};
PreziPlayer.prototype.setDimensions = function(dims) {
for (var parameter in dims) {
this.iframe[parameter] = dims[parameter];
}
};
PreziPlayer.prototype.getDimensions = function() {
return {
width: parseInt(this.iframe.width, 10),
height: parseInt(this.iframe.height, 10)
};
};
PreziPlayer.prototype.on = function(event, callback) {
this.callbacks.push({
event: event,
callback: callback
});
};
PreziPlayer.prototype.off = function(event, callback) {
var j, item;
if (event === undefined) {
this.callbacks = [];
}
j = this.callbacks.length;
while (j--) {
item = this.callbacks[j];
if (item && item.event === event && (callback === undefined || item.callback === callback)){
this.callbacks.splice(j, 1);
}
}
};
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if (window.addEventListener) {
window.addEventListener('message', PreziPlayer.messageReceived, false);
} else {
window.attachEvent('onmessage', PreziPlayer.messageReceived);
}
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window.PreziPlayer = PreziPlayer;
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export default PreziPlayer;