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Details done except for syllabus

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This commit is contained in:
Don Mitchell
2012-11-28 17:10:41 -05:00
parent a48a392eb2
commit c0da6e4249
6 changed files with 87 additions and 833 deletions
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67
cms/static/js/models/settings/course_details.js
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@@ -36,5 +36,72 @@ CMS.Models.Settings.CourseDetails = Backbone.Model.extend({
urlRoot: function() {
var location = this.get('location');
return '/' + location.get('org') + "/" + location.get('course') + '/settings/' + location.get('name') + '/section/details';
},
_videoprefix : /\s*<video\s*youtube="/g,
_videospeedparse : /\d+\.?\d*(?=:)/g,
_videokeyparse : /([^,\/]+)/g,
_videonosuffix : /[^\"]+/g,
_getNextMatch : function (regex, string, cursor) {
regex.lastIndex = cursor;
return regex.exec(string);
},
// the whole string for editing
getVideoSource: function() {
if (this.get('intro_video')) {
var cursor = 0;
var videostring = this.get('intro_video');
this._getNextMatch(this._videoprefix, videostring, cursor);
cursor = this._videoprefix.lastIndex;
return this._getNextMatch(this._videonosuffix, videostring, cursor);
}
else return "";
},
// the source closest to 1.0 speed
videosourceSample: function() {
if (this.get('intro_video')) {
var cursor = 0;
var videostring = this.get('intro_video');
this._getNextMatch(this._videoprefix, videostring, cursor);
cursor = this._videoprefix.lastIndex;
// parse from [speed:id,/s?]* to find 1.0 or take first
var parsedspeed = this._getNextMatch(this._videospeedparse, videostring, cursor);
var bestkey;
if (parsedspeed) {
cursor = this._videospeedparse.lastIndex + 1;
var bestspeed = Number(parsedspeed);
bestkey = this._getNextMatch(this._videokeyparse, videostring, cursor);
cursor = this._videokeyparse.lastIndex + 1;
while (cursor < videostring.length && bestspeed != 1.0) {
parsedspeed = this._getNextMatch(this._videospeedparse, videostring, cursor);
cursor = this._videospeedparse.lastIndex + 1;
if (Math.abs(Number(parsedspeed) - 1.0) < Math.abs(bestspeed - 1.0)) {
bestspeed = Number(parsedspeed);
bestkey = this._getNextMatch(this._videokeyparse, videostring, cursor);
}
else this._getNextMatch(this._videokeyparse, videostring, cursor);
cursor = this._videokeyparse.lastIndex + 1;
}
}
else {
bestkey = this._getNextMatch(this._videokeyparse, videostring, cursor);
}
if (bestkey) {
// WTF? for some reason bestkey is an array [key, key] (same one repeated)
if (_.isArray(bestkey)) bestkey = bestkey[0];
return "http://www.youtube.com/embed/" + bestkey;
}
else return "";
}
},
save_videosource: function(newsource) {
// newsource either is <video youtube="speed:key, *"/> or just the "speed:key, *" string
// returns the videosource for the preview which iss the key whose speed is closest to 1
if (newsource == null) this.save({'intro_video': null});
else if (this._getNextMatch(this._videoprefix, newsource, 0)) this.save('intro_video', newsource);
else this.save('intro_video', '<video youtube="' + newsource + '"/>');
return this.videosourceSample();
}
});