| // Copyright 2022 The Pigweed Authors |
| // |
| // 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 |
| // |
| // https://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. |
| |
| export default class LocalStorageArray { |
| data: string[] = []; |
| maxSize: number; |
| key: string = "__pw_repl_history"; |
| |
| constructor(maxSize: number = 4) { |
| this.maxSize = maxSize; |
| const curHistory = localStorage.getItem(this.key); |
| if (curHistory) { |
| this.data = JSON.parse(localStorage.getItem(this.key)!) |
| } |
| } |
| |
| unshift(data: string) { |
| this.data.unshift(data); |
| if (this.data.length > this.maxSize) { |
| this.data = this.data.slice(0, this.maxSize); |
| } |
| localStorage.setItem(this.key, JSON.stringify(this.data)); |
| } |
| |
| clear() { |
| this.data = []; |
| localStorage.removeItem(this.key); |
| } |
| } |