78 lines
1.9 KiB
JavaScript
78 lines
1.9 KiB
JavaScript
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var _ = require('underscore');
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/**
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* Local storage wrapper
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*
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* - It should be used within 'cartodb' key, for example:
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*
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* var loc_sto = new cdb.common.LocalStorage();
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* loc_sto.set({ 'dashboard.order': 'create_at' });
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* loc_sto.get('dashboard.order');
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*
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*/
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var LocalStorageWrapper = function (name) {
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this.name = name || 'cartodb';
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if (!localStorage.getItem(this.name) && this.isEnabled()) {
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localStorage.setItem(this.name, '{}');
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}
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};
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// Some browsers with private mode don't allow to use
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// local storage
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LocalStorageWrapper.prototype.isEnabled = function () {
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try {
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localStorage.setItem('checking', 'test');
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localStorage.removeItem('checking');
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return true;
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} catch (e) {
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return false;
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}
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};
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LocalStorageWrapper.prototype.get = function (n) {
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if (!this.isEnabled()) return false;
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if (n === undefined) {
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return JSON.parse(localStorage.getItem(this.name));
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} else {
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var data = JSON.parse(localStorage.getItem(this.name));
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return data[n];
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}
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};
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LocalStorageWrapper.prototype.search = function (searchTerm) {
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if (!this.isEnabled()) return null;
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var wholeArray = JSON.parse(localStorage.getItem(this.name));
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for (var i in wholeArray) {
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if (wholeArray[i][searchTerm]) {
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return wholeArray[i][searchTerm];
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}
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}
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return null;
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};
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LocalStorageWrapper.prototype.set = function (data) {
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if (!this.isEnabled()) return null;
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var d = _.extend(this.get(), data);
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return localStorage.setItem(this.name, JSON.stringify(d));
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};
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LocalStorageWrapper.prototype.add = function (obj) {
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return this.set(obj);
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};
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LocalStorageWrapper.prototype.remove = function (n) {
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if (!this.isEnabled()) return null;
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var d = _.omit(this.get(), n);
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return localStorage.setItem(this.name, JSON.stringify(d));
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};
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LocalStorageWrapper.prototype.destroy = function () {
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delete localStorage.removeItem(this.name);
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};
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module.exports = LocalStorageWrapper;
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