79 lines
2.1 KiB
JavaScript
79 lines
2.1 KiB
JavaScript
/* eslint-disable no-param-reassign, consistent-return */
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import AccessorUtilities from './lib/utils/accessor';
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export default class Autosave {
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constructor(field, key, fallbackKey, lockVersion) {
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this.field = field;
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this.isLocalStorageAvailable = AccessorUtilities.isLocalStorageAccessSafe();
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if (key.join != null) {
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key = key.join('/');
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}
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this.key = `autosave/${key}`;
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this.fallbackKey = fallbackKey;
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this.lockVersionKey = `${this.key}/lockVersion`;
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this.lockVersion = lockVersion;
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this.field.data('autosave', this);
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this.restore();
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this.field.on('input', () => this.save());
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}
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restore() {
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if (!this.isLocalStorageAvailable) return;
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if (!this.field.length) return;
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const text = window.localStorage.getItem(this.key);
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const fallbackText = window.localStorage.getItem(this.fallbackKey);
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if (text) {
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this.field.val(text);
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} else if (fallbackText) {
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this.field.val(fallbackText);
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}
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this.field.trigger('input');
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// v-model does not update with jQuery trigger
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// https://github.com/vuejs/vue/issues/2804#issuecomment-216968137
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const event = new Event('change', { bubbles: true, cancelable: false });
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const field = this.field.get(0);
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if (field) {
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field.dispatchEvent(event);
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}
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}
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getSavedLockVersion() {
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if (!this.isLocalStorageAvailable) return;
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return window.localStorage.getItem(this.lockVersionKey);
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}
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save() {
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if (!this.field.length) return;
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const text = this.field.val();
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if (this.isLocalStorageAvailable && text) {
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if (this.fallbackKey) {
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window.localStorage.setItem(this.fallbackKey, text);
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}
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if (this.lockVersion !== undefined) {
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window.localStorage.setItem(this.lockVersionKey, this.lockVersion);
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}
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return window.localStorage.setItem(this.key, text);
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}
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return this.reset();
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}
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reset() {
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if (!this.isLocalStorageAvailable) return;
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window.localStorage.removeItem(this.lockVersionKey);
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window.localStorage.removeItem(this.fallbackKey);
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return window.localStorage.removeItem(this.key);
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}
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dispose() {
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this.field.off('input');
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}
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}
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