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(function(window) {
var ORIGIN_ = location.protocol + '//' + location.host;
function SlideController() {
this.popup = null;
this.isPopup = window.opener;
if (this.setupDone()) {
window.addEventListener('message', this.onMessage_.bind(this),
false);
// Close popups if we reload the main window.
window.addEventListener('beforeunload', function(e) {
if (this.popup) {
this.popup.close();
}
}.bind(this), false);
}
}
SlideController.PRESENTER_MODE_PARAM = 'presentme';
SlideController.prototype.setupDone = function() {
var params = location.search.substring(1).split('&').map(function(el) {
return el.split('=');
});
var presentMe = null;
for (var i = 0, param; param = params[i]; ++i) {
if (param[0].toLowerCase() == SlideController.PRESENTER_MODE_PARAM) {
presentMe = param[1] == 'true';
break;
}
}
if (presentMe !== null) {
localStorage.ENABLE_PRESENTOR_MODE = presentMe;
// TODO: use window.history.pushState to update URL instead of the
// redirect.
if (window.history.replaceState) {
window.history.replaceState({}, '', location.pathname);
} else {
location.replace(location.pathname);
return false;
}
}
var enablePresenterMode = localStorage.getItem('ENABLE_PRESENTOR_MODE');
if (enablePresenterMode && JSON.parse(enablePresenterMode)) {
// Only open popup from main deck. Don't want recursive popup
// opening!
if (!this.isPopup) {
var opts = 'menubar=no,location=yes,resizable=yes,scrollbars=no,status=no';
this.popup = window.open(location.href, 'mywindow', opts);
// Loading in the popup? Trigger the hotkey for turning
// presenter mode on.
this.popup.addEventListener('load', function(e) {
var evt = this.popup.document.createEvent('Event');
evt.initEvent('keydown', true, true);
evt.keyCode = 'P'.charCodeAt(0);
this.popup.document.dispatchEvent(evt);
// this.popup.document.body.classList.add('with-notes');
// document.body.classList.add('popup');
}.bind(this), false);
}
}
return true;
}
SlideController.prototype.onMessage_ = function(e) {
var data = e.data;
// Restrict messages to being from this origin. Allow local developmet
// from file:// though.
// TODO: It would be dope if FF implemented location.origin!
if (e.origin != ORIGIN_ && ORIGIN_.indexOf('file://') != 0) {
alert('Someone tried to postMessage from an unknown origin');
return;
}
// if (e.source.location.hostname != 'localhost') {
// alert('Someone tried to postMessage from an unknown origin');
// return;
// }
if ('keyCode' in data) {
var evt = document.createEvent('Event');
evt.initEvent('keydown', true, true);
evt.keyCode = data.keyCode;
document.dispatchEvent(evt);
}
};
SlideController.prototype.sendMsg = function(msg) {
// // Send message to popup window.
// if (this.popup) {
// this.popup.postMessage(msg, ORIGIN_);
// }
// Send message to main window.
if (this.isPopup) {
// TODO: It would be dope if FF implemented location.origin.
window.opener.postMessage(msg, '*');
}
};
window.SlideController = SlideController;
})(window);
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