consumerportal/js/src/services/generic/storage.ts

mydna Custimised for you

/// <reference path="../../includes.ts" />

module app {

    export interface IAppStorage {
        setItem(key: string, value: string);
        getItem(key: string): string;
        removeItem(key: string);
        clear();
    }

    export class Storage implements IAppStorage {

        private data: any = {};
        private native: boolean;

        constructor() {
            try {
                localStorage.setItem('mod', 'mod');
                localStorage.removeItem('mod');
                this.native = true;
            } catch(e) {
                this.native = false;
            }
        }

        setItem(key: string, value: string) {
            if (this.native) {
                try {
                    localStorage.setItem(key, value);
                } catch(e) {
                    this.native = false;
                    this.data[key] = value;
                }
            } else {
                this.data[key] = value;
            }
        }

        getItem(key: string) {
            if (this.native) {
                try {
                    return localStorage.getItem(key);
                } catch(e) {
                    this.native = false;
                    return null;
                }
            } else {
                return this.data.hasOwnProperty(key) ? this.data[key] : null;
            }
        }

        removeItem(key: any) {
            if (this.native) {
                try {
                    localStorage.removeItem(key);
                } catch(e) {
                    this.native = false;
                }
            } else {
                delete this.data[key];
            }
        }

        clear() {
            if (this.native) {
                try {
                    localStorage.clear();
                } catch(e) {
                    this.native = false;
                }
            } else {
                this.data = {};
            }
        }

    }

    angular
        .module('app')
        .service('appLocalStorage', Storage);
}