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/*
* Copyright 2015 Open Networking Laboratory
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
ONOS GUI -- Util -- User Preference Service
*/
(function () {
'use strict';
// injected refs
var $log, $cookies, fs;
// internal state
var cache = {};
// NOTE: in Angular 1.3.5, $cookies is just a simple object, and
// cookie values are just strings. From the 1.3.5 docs:
//
// "Only a simple Object is exposed and by adding or removing
// properties to/from this object, new cookies are created/deleted
// at the end of current $eval. The object's properties can only
// be strings."
//
// We may want to upgrade the version of Angular sometime soon
// since later version support objects as cookie values.
// NOTE: prefs represented as simple name/value pairs
// => a temporary restriction while we are encoding into cookies
/*
{
foo: 1,
bar: 0,
goo: 2
}
stored as "foo:1,bar:0,goo:2"
*/
// reads cookie with given name and returns an object rep of its value
// or null if no such cookie is set
function getPrefs(name) {
var cook = $cookies[name],
bits,
obj = {};
if (cook) {
bits = cook.split(',');
bits.forEach(function (value) {
var x = value.split(':');
obj[x[0]] = x[1];
});
// update the cache
cache[name] = obj;
return obj;
}
// perhaps we have a cached copy..
return cache[name];
}
// converts string values to numbers for selected (or all) keys
function asNumbers(obj, keys) {
if (!obj) return null;
if (!keys) {
// do them all
angular.forEach(obj, function (v, k) {
obj[k] = Number(obj[k]);
});
} else {
keys.forEach(function (k) {
obj[k] = Number(obj[k]);
});
}
return obj;
}
function setPrefs(name, obj) {
var bits = [],
str;
angular.forEach(obj, function (value, key) {
bits.push(key + ':' + value);
});
str = bits.join(',');
// keep a cached copy of the object
cache[name] = obj;
// The angular way of doing this...
// $cookies[name] = str;
// ...but it appears that this gets delayed, and doesn't 'stick' ??
// FORCE cookie to be set by writing directly to document.cookie...
document.cookie = name + '=' + encodeURIComponent(str);
if (fs.debugOn('prefs')) {
$log.debug('<<>> Wrote cookie <'+name+'>:', str);
}
}
angular.module('onosUtil')
.factory('PrefsService', ['$log', '$cookies', 'FnService',
function (_$log_, _$cookies_, _fs_) {
$log = _$log_;
$cookies = _$cookies_;
fs = _fs_;
return {
getPrefs: getPrefs,
asNumbers: asNumbers,
setPrefs: setPrefs
};
}]);
}());
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