Files
edx-platform/cms/static/js/models/license.js
2015-05-18 14:35:08 -04:00

101 lines
3.4 KiB
JavaScript

define(["backbone", "underscore"], function(Backbone, _) {
var LicenseModel = Backbone.Model.extend({
defaults: {
"type": null,
"options": {},
"custom": false // either `false`, or a string
},
initialize: function(attributes) {
if(attributes && attributes.asString) {
this.setFromString(attributes.asString);
this.unset("asString");
}
},
toString: function() {
var custom = this.get("custom");
if (custom) {
return custom;
}
var type = this.get("type"),
options = this.get("options");
if (_.isEmpty(options)) {
return type || "";
}
// options are where it gets tricky
var optionStrings = _.map(options, function (value, key) {
if(_.isBoolean(value)) {
return value ? key : null
} else {
return key + "=" + value
}
});
// filter out nulls
optionStrings = _.filter(optionStrings, _.identity);
// build license string and return
return type + ": " + optionStrings.join(" ");
},
setFromString: function(string, options) {
if (!string) {
// reset to defaults
return this.set(this.defaults, options);
}
var colonIndex = string.indexOf(":"),
spaceIndex = string.indexOf(" ");
// a string without a colon could be a custom license, or a license
// type without options
if (colonIndex == -1) {
if (spaceIndex == -1) {
// if there's no space, it's a license type without options
return this.set({
"type": string,
"options": {},
"custom": false
}, options);
} else {
// if there is a space, it's a custom license
return this.set({
"type": null,
"options": {},
"custom": string
}, options);
}
}
// there is a colon, which indicates a license type with options.
var type = string.substring(0, colonIndex),
optionsObj = {},
optionsString = string.substring(colonIndex + 1);
_.each(optionsString.split(" "), function(optionString) {
if (_.isEmpty(optionString)) {
return;
}
var eqIndex = optionString.indexOf("=");
if(eqIndex == -1) {
// this is a boolean flag
optionsObj[optionString] = true;
} else {
// this is a key-value pair
var optionKey = optionString.substring(0, eqIndex);
var optionVal = optionString.substring(eqIndex + 1);
optionsObj[optionKey] = optionVal;
}
});
return this.set({
"type": type, "options": optionsObj, "custom": false,
}, options);
}
});
return LicenseModel;
});