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settings: add a cache

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From the comment:
This cache is important for two reasons. One, angular hits it up really often
(because it needs to check for changes and it's not very clever about it).
Two, it prevents weird type conversion issues that otherwise arise in
$store.parseValue (e.g. converting "123." to the number 123 even though it
actually was the beginning of an IP address that the user was in the
process of entering).
This commit is contained in:
Lorenz Hübschle-Schneider 2015-05-21 21:08:17 +02:00
parent 0647777e9e
commit 0f706c37fe
1 changed files with 12 additions and 1 deletions
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13
js/settings.js
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@ -6,6 +6,13 @@ var weechat = angular.module('weechat');
weechat.factory('settings', ['$store', '$rootScope', function($store, $rootScope) {
var that = this;
this.callbacks = {};
// This cache is important for two reasons. One, angular hits it up really often
// (because it needs to check for changes and it's not very clever about it).
// Two, it prevents weird type conversion issues that otherwise arise in
// $store.parseValue (e.g. converting "123." to the number 123 even though it
// actually was the beginning of an IP address that the user was in the
// process of entering)
this.cache = {};
// Define a property for a setting, retrieving it on read
// and writing it to localStorage on write
@ -14,9 +21,13 @@ weechat.factory('settings', ['$store', '$rootScope', function($store, $rootScope
enumerable: true,
key: key,
get: function() {
return $store.get(key);
if (!(key in this.cache)) {
this.cache[key] = $store.get(key);
}
return this.cache[key];
},
set: function(newVal) {
this.cache[key] = newVal;
$store.set(key, newVal);
// Call any callbacks
var callbacks = that.callbacks[key];